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Study of solidification and stabilization of heavy metals by passivators in heavy metal-contaminated soil

  • Shenglan Ye EMAIL logo , Luyao Wang and Tiancheng Liu
Published/Copyright: January 18, 2022
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Open Chemistry
From the journal Open Chemistry Volume 20 Issue 1

Abstract

In this study, the indoor constant temperature culture experiment was used to explore the mutual transformation of different forms of heavy metals. Appropriate types of passivating agents were screened, and the optimal addition amount was determined to realize the solidification and stabilization of heavy metals. The results showed that the dissolved copper (Cu), zinc (Zn), and lead (Pb) contents of the zeolite-treated soil decreased to the lowest. They were 219, 819, and 40 g/kg, respectively, which were 31.2, 6.5, and 38.5% lower than no passivating agent added (the control); the dissolved Cu, Zn, and Pb content gradually increased with the extension of time; 5% zeolite (Z4) treatment had the highest average content of Cu, Zn, and Pb in the residue state, respectively, 24, 48, and 19 mg/kg; and at the end of the test, the residual Zn content of Z4 treatment reached 50 mg/kg, which was 72.4% higher than that of the control. A comprehensive analysis of the changes in the dissolved state of the four heavy metals in the soil shows that Cu, Zn, cadmium (Cd), and Pb treated with zeolite have the best effect, followed by sepiolite, and finally palygorskite. Therefore, 5% zeolite can be used for the passivation restoration of heavy metals Cu, Zn, Cd, and Pb in the soil.

Keywords: heavy metals; contaminated soils; solidification and stabilization; passivators; constant temperature culture

1 Introduction

Soil is an important cornerstone for carrying the entire biological cycle; so, the cleanliness and safety of the soil have an immeasurable impact on animals, plants, and humans. With the acceleration of industrialization and urbanization in today’s society, human beings have neglected environmental protection while developing their economy rapidly. This makes soil pollution by heavy metals increasingly prominent, especially agricultural soils polluted by heavy metals. Due to the migration of heavy metals in the food chain, they pose a great threat to human health and ecological environment security [1,2,3]. Only when the soil is contaminated with heavy metals and accumulated to a certain degree, can it be expressed through plant growth and human health. Therefore, once the soil is polluted by heavy metals, it will change the structure, properties, and functions of the soil and be transported to microorganisms and plants through the food chain, causing harm to human health [4,5,6]. At present, soil heavy metal pollution has become a global problem, especially in developing countries, and China is the largest developing country [7,8]. Therefore, it is imminent to study the large-scale remediation method of heavy metal-contaminated soil.

Heavy metal pollution is an extremely severe type of pollution that is long-lasting, highly toxic, and easy to migrate. Therefore, the cost, cycle, and difficulty of repairing are extremely high [8,9]. Physical repair can take effect quickly, but it requires a huge cost. Phytoremediation has a long-term effect, but its repair time is longer [10]. Therefore, chemical passivation is the most practical method for remediation of soil contaminated by heavy metals. It is relatively fast and can ensure the safe production of crops [11,12]. Chemical passivation remediation refers to the addition of passivators to contaminated soil; passivators convert heavy metals from active forms to stable forms. This is beneficial to reduce the migration and bioavailability of heavy metals and to achieve a method of repairing soil contaminated by heavy metals [13,14]. This repair technology has the advantages of rapid repair and simple operation, so it is more suitable for large areas of farmland contaminated by heavy metals [15,16]. At present, the passivator materials that can be used mainly include various minerals, biochar and organic matter, and so on. There are certain differences in their remediation results for different types of pollutants, soil types, and pollution levels [17,18]. Inactivation agents repairing the soil can improve the physical and chemical properties of the soil and supplement nutrients. At the same time, through adsorption, precipitation, and complexation, heavy metals are changed from exchangeable state to organic combined state and residual state. This reduces the mobility and biocombination of heavy metals [19].

There are many types of chemical passivators. The price of the passivator and the possibility of recontamination should be fully considered. Minerals are cheap materials with the best environmental compatibility. In recent years, nonmetallic minerals are often used as passivators for heavy metals in the soil. This research has achieved good results [20,21]. Studies have shown that the exchangeable cadmium (Cd) content in vegetable soil can be reduced by 23.1–41.2%. The maximum reduction of Cd in the edible parts of lettuce, rapeseed, and radish reached 51.8, 47.0, and 24.9%, respectively [22]. Studies have shown that under the repairing effect of sepiolite, the absorption and accumulation of Cd in the edible parts and roots of pakchoi can be significantly reduced [23]. Some scholars have studied the control effects of different passivators on the soil-ryegrass system. It was found that passivators can change the chemical form and biological activity of the heavy metals and reduce the migration and transformation of heavy metals into plants [24,25].

The remediation effect of passivators on heavy metals is restricted by factors such as climate, soil physical and chemical properties, water and fertilizer management, and crop types and varieties. In actual research, passivation materials should be selected according to local conditions [26]. Therefore, it has two objects in this study: (1) To identify three mineral materials that were selected as passivation agents for remediation of heavy metal-contaminated soil. Through constant temperature cultivation, the different forms of heavy metals in the soil at different cultivation times were studied. (2) To discuss the best type and amount of passivator materials needed to change the chemical form and activity of soil heavy metals. It is conducive to the rational and effective use of soil polluted by heavy metals under the condition of ensuring the quality of crops. Moreover, these objectives should be technically written.

2 Experimental materials and methods

2.1 Experimental materials

The test soil was the clay around Xi’an city, Shaanxi Province. The sampling depth was 0–20 cm. The soil samples were air-dried and passed through a 0.149 mm sieve for use. The contents of total copper (Cu), total Cd, total zinc (Zn), and total lead (Pb) in the soil samples were 14, 0, 28, and 16 mg/kg, respectively. The passivating agent is sepiolite, zeolite, and palygorskite. Heavy metal-contaminated soils are expanded by five times in accordance with the second level of soil environmental quality standards (GB 15618-2018), and appropriate heavy metal salts are added to make the total Cu, total Cd, total Zn, and total Pb contents in the soil reach 500, 1.5, 1,250, and 600 mg/kg, respectively.

2.1.1 Preparation of heavy metal compound-contaminated soil

Prepared soil sample of 20 kg was added to a 4 L plastic pot. There are five plastic basins in total. The water content was controlled to 60% of the field water-holding capacity. The soil bulk density is 1.21 g/cm3. The soil samples were cultured in a constant temperature incubator at 25°C for 7 days. According to the second level of soil environmental quality standards (GB 15618-2018), heavy metals in the form of sulfates are added to the soil. The total Cu, total Cd, total Zn, and total Pb contents in the soil are 500, 1.5, 1,250, and 1,500 mg/kg, respectively, and water was added according to 65% of the field water-holding capacity. The soil is contaminated with heavy metals required for the test. The contaminated soil is then subjected to aging treatment. The soil moisture is adjusted by the weighing difference method every 3 days. The soil moisture content is maintained at 65%. After 30 days, a constant temperature incubation test was carried out.

2.2 Experimental method

The constant temperature incubation test was adopted. In the experimental setting, the ratio of passivation agent to air-dried soil sample was 1, 2, 3, and 5%. A mineral passivator was added to 150 g of heavy metal compound-contaminated soil. The heavy metal compound-contaminated soil after adding the passivator is thoroughly mixed. The mixed sample was placed in a 250 mL plastic bottle. The mouth of the bottle was sealed with plastic wrap, and several small holes were left in the middle of the plastic wrap. The treated soil samples were cultured in a constant temperature incubator at 25°C. During the cultivation process, a weighing method was used to supplement deionized water to 65% of the field water-holding capacity. About 10 g soil samples were collected at 20, 40, and 50 days of culture. After natural air drying, the soil samples were passed through a 0.149 mm sieve for later use. Palygorskite was recorded as P1–P4, Zeolite was recorded as Z1–Z4, and sepiolite was recorded as S1–S4. The control without passivation agent was recorded as the control. There were 13 treatments in total, with three repetitions for each treatment.

The contents of different forms of Cu, Cd, Zn, and Pb in the soil were continuously extracted with 0.1 mol/L acetic acid, 0.1 mol/L hydroxylamine hydrochloride, and 8.8 mol/L H2O2. The leaching residue was digested with nitric acid–hydrofluoric acid–perchloric acid. Finally, the dissolved, reducible, and oxidizable leachate and residue states were obtained. The contents of Cd, Cu, Pb, and Zn in the extract and digestion solution were determined by atomic absorption spectrophotometry (Analytical Instruments AG in Jena, Germany. AAS ZEEnit700plus).

3 Results and discussion

3.1 Study the change trend of heavy metal forms in different culture time

At the beginning of the experiment, there was no significant difference in heavy metal content between different treatments. The content of dissolved heavy metals showed a downward trend with time. At the end of the experiment, the dissolved Cu, Zn, and Pb contents of the zeolite treatment reached the lowest. They were 219, 819, and 40 mg/kg, which were 31.2, 6.5, and 38.5% lower than those of the control, respectively. The content of sepiolite in dissolved Cd is the lowest, which is 1.08 mg/kg, followed by the contents of palygorskite and zeolite, which both are 1.09 mg/kg. They were reduced by 10.7% and 9.9% respectively compared to the control. The content of the reduced and oxidized states of the passivator treatment increases first and then decreases with the increase of time. The control showed a continuous decline. The content of heavy metals in the residue of different treatments gradually increased with time; among them, the contents of Cu, Zn, and Pb in the residue of zeolite reached the highest 48, 70, and 41 mg/kg, which were 1.92, 2.41, and 1.86 times that of the control, respectively. However, the content of residual Cd was treated with sepiolite, which was 0.18 mg/kg, which was twice that of the control (Table 1). It shows that the form of heavy metals treated with passivating agent changes to a low-activity oxidizable state and a residue state. The content of heavy metals in the residues of different treatments gradually increased with time. This is consistent with the results of Gao et al. [27]. Using montmorillonite to passivate and remediate heavy metal compound-contaminated soil, the weakly acid-extracted Pb, Zn, and Cd in the soil were reduced by 12.0–15.9%, whereas the residue content increased by 62.5–110.1%. The results show that the bioavailability and mobility of these four heavy metals have been reduced. The main reason is that the addition of passivators can convert heavy metals in the soil from the dissolved state to the residue state, and the dissolved heavy metals are finally formed into a fixed residue form through the process of reduction and oxidation. Studies have shown that the types of passivators and soil pH and Eh have a close influence on the occurrence of heavy metals, coordination properties, and charge adsorption. This can change the form of heavy metals in the soil and affect their migration and transformation in the soil environment [28,29,30]. Therefore, the dissolved heavy metals in the soil treated by the passivator quickly converted to the residue state, resulting in the lower content than the control treatment.

Table 1

Changes in the forms content of four heavy metals treated (mg/kg) with different passivates over time

Dissolved state Reduced state Oxidized state Residual state
Time 12.1 12.21 1.10 1.21 12.1 12.21 1.10 1.21 12.1 12.21 1.10 1.21 12.1 12.21 1.10 1.21
CK Cu 367 357 346 321 214 106 67 58 38 31 27 14 15 20 23 25
Zn 972 886 874 868 115 162 95 91 58 51 46 35 16 22 26 29
Cd 1.35 1.31 1.26 1.21 0.10 0.11 0.11 1.09 0.02 0.04 0.02 0.01 0 0 0.06 0.08
Pb 80 77 69 65 67 127 108 99 54 46 34 30 11 15 17 22
P Cu 375 346 287 257 82 86 94 88 24 38 25 16 14 15 23 32
Zn 973 923 865 841 126 134 130 122 41 57 40 27 28 32 43 48
Cd 1.34 1.26 1.11 1.09 0.12 0.12 0.11 0.10 0.02 0.03 0.03 0.02 0.04 0.08 0.12 0.14
Pb 84 69 66 63 81 113 109 103 56 69 30 18 14 14 22 36
Z Cu 371 325 252 219 85 81 87 84 27 38 28 24 15 18 22 48
Zn 989 912 850 812 117 153 145 132 45 51 43 37 32 38 49 70
Cd 1.35 1.31 1.19 1.09 0.10 0.13 0.12 1.12 0.03 0.05 0.03 0.02 0.01 0.11 0.13 0.16
Pb 84 77 61 40 84 101 96 93 61 73 40 19 16 17 25 41
S Cu 372 318 347 265 81 86 82 880 17 26 28 15 17 19 20 35
Zn 978 945 868 821 119 150 138 127 32 42 45 27 35 36 37 52
Cd 1.31 1.29 1.16 1.08 0.10 0.12 0.10 0.10 0.01 0.03 0.02 0.01 0 0.12 0.15 0.18
Pb 87 81 74 59 90 112 97 91 52 61 42 15 14 16 24 37

Note: The treatments in the table are CK-control without passivation agent, P-palygorskite, S-sepiolite, Z-zeolite, and the values of P, Z, and S represent the average heavy metal content of different proportions.

3.2 Study the change trend of dissolved heavy metals in different addition levels

Dissolved heavy metals are heavy metals that are exchange-adsorbed on soil clay minerals and other components, such as iron hydroxide, manganese hydroxide, and humus. This form is most sensitive to changes in the soil environment. It has high activity and is easy to migrate and transform through leaching and leakage of irrigation, rainwater, etc. Eventually, it will seriously pollute the underlying soil, groundwater, and growing plants. It can be seen from Figure 1 that the content of dissolved Cu, Zn, Cd, and Pb of the control is the largest. After adding different passivators, the content of dissolved heavy metals decreased to varying degrees. This is consistent with the results of existing studies. After adding passivation materials, the form of each heavy metal changes to an oxidizable state with low activity and a residue state. With the prolongation of the passivation time, the content of forms with high bioavailability gradually decreases. It shows that the passivation material added can effectively reduce the mobility and bioavailability of Pb, Cd, Zn, and arsenic [31,32]. In this study, P3 has the lowest Zn content, which is 814 mg/kg, which is lower than the other passivation treatments. When the dissolved heavy metals are treated with sepiolite, the effect of treatment with S3 (3% sepiolite) is the best, of which Cu, Zn, and Pb are 286, 856, and 60 mg/kg, respectively. For zeolite treatment, Z4 (zeolite 5%) performed best, and the dissolved heavy metals Cu, Cd, and Pb are the lowest, which are 269, 0.94, and 55 mg/kg, respectively. Therefore, among the three passivating agents, palygorskite has the best passivation effect on Cu, and 5% zeolite has the best comprehensive passivation effect on heavy metals.

Figure 1 Changes in dissolved heavy metal content in different treatments. Note: The treatments in the figure are CK-control without passivation agent, P1-palygorskite 1%, P2-palygorskite 2%, P3-palygorskite 3%, P4-palygorskite 5%, S1-sepiolite 1%, S2-Sepiolite 2%, S3-Sepiolite 3%, S4-Sepiolite 5%, Z1-Zeolite 1%, Z2-Zeolite 2%, Z3-Zeolite 3%, and Z4-Zeolite 5%.
Figure 1

Changes in dissolved heavy metal content in different treatments. Note: The treatments in the figure are CK-control without passivation agent, P1-palygorskite 1%, P2-palygorskite 2%, P3-palygorskite 3%, P4-palygorskite 5%, S1-sepiolite 1%, S2-Sepiolite 2%, S3-Sepiolite 3%, S4-Sepiolite 5%, Z1-Zeolite 1%, Z2-Zeolite 2%, Z3-Zeolite 3%, and Z4-Zeolite 5%.

3.3 Study the change trend of residual heavy metal in different addition levels

Residual heavy metals are stable in crystal lattices such as quartz and clay minerals. Its nature is stable. It has little effect on the migration and bioavailability of heavy metals in the soil. Residual heavy metals in the soil will not be absorbed by plants, and they will not easily leak through rain or other means. It presents an extremely stable state. It can be seen from Table 2 that different passivation treatments significantly increased the content of residual heavy metals. The results are consistent with the conclusions of earlier reports [32,33]. In this study, the heavy metal Cd is not easy to be solidified, and the residual Cd of S4, Z4, and S3 is 0.21, 0.18, and 0.17 mg/kg, respectively. They are significantly different from the control (P < 0.05). Among them, S4 and Z4 have the best fixation effect. This is consistent with the results of existing studies. The application of sepiolite in Cd-contaminated soil can significantly increase soil pH. It can promote the conversion of Cd in the soil from the exchange state with high activity to the residue state with low activity, thereby effectively reducing its bioavailability and migration ability [34,35]. The maximum Pb content in the residue of P2 treatment is 24 mg/kg. The residual Cu, Zn, and Pb contents of Z4 treatment are the highest, which are 24, 48, and 19 mg/kg, respectively. They are significantly higher than those from other treatments. Therefore, the effect of zeolite treatment is the best, followed by sepiolite. The main reason is that the application of zeolite powder can promote the formation of soil aggregates and increase soil organic matter [36]. In addition, zeolite powder belongs to clay minerals. Due to its large specific surface area and abundant negative charges on the surface, it has strong adsorption and ion-exchange capabilities for metal ions [37].

Table 2

Effects of different passivators on the concentrations of residual heavy metals (mg/kg) in soil

Treatment Cu Zn Cd Pb
CK 12 ± 0.54d 29 ± 1.02ef 0.08 ± 0.01d 8 ± 0.22e
P1 12 ± 0.43d 30 ± 1.15e 0.09 ± 0.01d 12 ± 0.45d
P2 17 ± 0.64bc 41 ± 1.26bc 0.10 ± 0.01d 16 ± 0.41c
P3 19 ± 0.93b 42 ± 1.32bc 0.11 ± 0.01cd 17 ± 0.43c
P4 25 ± 1.00a 43 ± 0.89c 0.15 ± 0.01bc 25 ± 0.54b
Z1 15 ± 0.25c 34 ± 1.07d 0.10 ± 0.01d 12 ± 0.27d
Z2 16 ± 0.42bc 33 ± 1.01de 0.12 ± 0.01cd 12 ± 0.32d
Z3 18 ± 0.66b 34 ± 1.20d 0.13 ± 0.01cd 24 ± 0.66b
Z4 24 ± 1.21a 48 ± 1.52a 0.18 ± 0.01ab 19 ± 0.76c
S1 12 ± 0.27d 27 ± 0.68f 0.13 ± 0.01cd 9 ± 0.22de
S2 16 ± 0.48bc 35 ± 1.11d 0.15 ± 0.01bc 11 ± 0.38de
S3 15 ± 0.39c 39 ± 1.04c 0.17 ± 0.01ab 17 ± 0.47c
S4 23 ± 0.72a 50 ± 1.30a 0.21 ± 0.01a 30 ± 0.90a

Note: Different lowercase letters in the same column represent significant differences between treatments (P < 0.05).

3.4 Changes in the content of heavy metals in polluted soil at different treatment times

3.4.1 Changes in the content of dissolved heavy metals in contaminated soil

It can be seen from Figure 2 that the dissolved Cu, Zn, Cd, and Pb in the soil showed a downward trend with an increase in the cultivation time under constant temperature culture conditions. The dissolved heavy metal content of each passivator treatment was basically less than the control. With the increase of the passivation dose in each treatment, the dissolved Cu, Zn, Cd, and Pb contents in the soil showed a downward trend. The research results of Ren [38] showed that the mineral treatment significantly reduced the available Zn, Cd, Cu, and Pb contents of heavy metals in the soil (P < 0.05). The reduction rate was 99.1, 91.4, 85.6, and 46.1%. This is consistent with the results of this study. The Cu content of Z4 treatment decreased from 413 to 299 mg/kg. The rate of decline is highest at 27.6%. Second, the Cu content of P2 and S4 treatment decreased from 367 and 377 mg/kg to 278 and 286 mg/kg, respectively. The decline rates were 24.3 and 24.1%. The difference between the two is not significant. There was no significant difference in the dissolved Zn content of the control. The rate of decline is only 0.6%. The content of dissolved Zn in the soil treated with P4 was the lowest at 814 mg/kg, and the rate of decline also reached the maximum at 23.2%. Then it is Z4 processing. The dissolved Zn content decreased from 1077 to 835 mg/kg. The decline rate reached 22.5%, and the difference between P4 and Z4 is not significant. In this study, only the dissolved Zn was reduced by 8.4–23.2%. This is consistent with the study by Liang et al. [39]. The effective state of Zn in the soil was reduced by 23.48–49.61% after the passivation agent treatment. The passivation rate in this study is low, mainly due to shorter passivation time. Research by Zhao [26] showed that the reduction range of soil available heavy metals increased with the extension of the test time. The overall dissolved content of Cd and Pb in the contaminated soil is the control > palygorskite > sepiolite > zeolite. Comprehensive analysis of the changes in the dissolved state of the four elements in the soil shows that Cu, Zn, Cd, and Pb treated with zeolite have the best effect, followed by palygorskite, and finally sepiolite.

Figure 2 Changes in the content of dissolved heavy metals in the soil at different incubation times.
Figure 2

Changes in the content of dissolved heavy metals in the soil at different incubation times.

3.4.2 Changes in residual heavy metal content in contaminated soil

It can be seen from Figure 3 that the residual Cu, Zn, Cd, and Pb in the soil showed an upward trend with an increase in the cultivation time under constant temperature culture conditions. The residual heavy metal content of each treatment is greater than that of the control. With the increase of the passivation dose in each treatment, the content of residual Cu, Zn, Cd, and Pb in the soil showed an upward trend. The overall Cu content in the soil residue is palygorskite > sepiolite > zeolite > the control. Among them, the residual Cu content of the control is 12 mg/kg. The residual Cu content of P4, S4, and Z4 treatments is 25, 24, and 23 mg/kg. They are 2.1, 2.0, and 1.9 times of the control, respectively, and it is significantly higher than the other treatments, but the difference between the three is not significant. Residual Zn content changed from 23 to 29 mg/kg. The fixation rate has increased by 2.1%. Z4 treatment has the highest residual Zn content of 50 mg/kg. Compared with the control, it increased by 72.4%, and it was significantly different from other zeolite treatments; followed by S4 treatment, the content of residual Zn in the soil was 48 mg/kg, which was an increase of 65.5% compared with the control. From P2 to P4, the content of residual Zn in the soil is 41, 42, and 43 mg/kg, respectively. Compared with the control, it increased by 40.0, 44.8, and 48.3%, respectively, which is consistent with Wang Xiaoyu’s research results [31]. With the increase of passivation time, the passivation rate of soil Zn increased. From 30 to 60 days, the passivation rate of soil Zn increased from 32.2–55.5 to 46.0–63.9%. The residual Cd of Z4, S4, and S3 is 0.21, 0.18, and 0.17 mg/kg, respectively. Compared with the control, it increases by 90.1, 63.6, and 54.5%, which is consistent with the research results of Guo et al. [40]. By applying passivating agent to the soil, the effective Cd content is significantly reduced, and the fixed content is increased. The content of residual Pb in the soil remains as zeolite > palygorskite > sepiolite > the control. The residual Pb content of Z4 reaches 30 mg/kg, which is 3.75 times higher than that of the control, and it is significantly different from the other treatments, followed by P4 and Z3 treatments, which are 25 and 24 mg/kg, respectively, which are 3.13 and 3.00 times higher than those of the control. A comprehensive analysis of the changes in the content of the residues of the four elements in the soil shows that Cu, Zn, Cd, and Pb treated with zeolite have the best effect, followed by sepiolite, and finally palygorskite.

Figure 3 Changes in the content of heavy metal residues in the soil at different cultivation times. Note: The bar chart in the figure uses December 1, 2020 as the base, showing the increase in the content of heavy metals in residues in the soil with different treatments over time.
Figure 3

Changes in the content of heavy metal residues in the soil at different cultivation times. Note: The bar chart in the figure uses December 1, 2020 as the base, showing the increase in the content of heavy metals in residues in the soil with different treatments over time.

4 Conclusion

In this experiment, the constant temperature culture experiment found that different kinds of passivators have a good fixation effect on heavy metal-contaminated soil.

  1. With different passivating agents, the dissolved Cu, Zn, and Pb contents of the zeolite treatment have the highest decrease rate. The sepiolite treatment has the highest decrease rate of dissolved Cd. The content of heavy metals in the residue state of each treatment gradually increased with time.

  2. Different addition amounts of passivators reduce the content of dissolved heavy metal and increase the content of residual heavy metal. Among the three passivating agents, 5% zeolite has the best passivation effect on heavy metals.

  3. With different amounts of passivation agents, the dissolved content of Cd and Pb in contaminated soil is the control > palygorskite > sepiolite > zeolite. The curing effect of Cu, Zn, Cd, and Pb treated with zeolite is the best, followed by sepiolite, and finally palygorskite.

Comprehensive analysis shows that 5% zeolite has the best effect and can be used for passivation restoration of heavy metals Cu, Zn, and Pb in the soil in the single-passivation treatment. The low concentration of sepiolite can repair Cd better than the other treatments.

  1. Funding information: This research was supported by Fund Project of Shaanxi Key Laboratory of Land Consolidation “A Study on the Influence of Loess Physical Properties on Heavy Metal Migration: A Case Study of Pb Pollution in Weidong New Town” (2019-JC06) and the project of Shaanxi Provence Land Engineering Construction Group (Program No. DJNY2021-23).

  2. Author contributions: S.Y., L.W., T.L. – conception of the study; S.Y, L.W. – experiment; S.Y., L.W. – analysis and manuscript preparation; S.Y. – data analysis and writing the manuscript; T. L. – analysis with constructive discussions.

  3. Conflict of interest: The authors declare they have no conflict of interests.

  4. Ethical approval: The conducted research is not related to either human or animal use.

  5. Data availability statement: All data generated or analyzed during this study are included in this published article.

Reference

[1] Li C, Sanchez GM, Wu Z, Cheng J, Zhang S, Wang Q, et al. Spatiotemporal patterns and drivers of soil contamination with heavy metals during an intensive urbanization period (1989–2018) in southern China. Environ Pollut. 2020;260:114075.10.1016/j.envpol.2020.114075Search in Google Scholar PubMed

[2] Hu YA, Cheng HF, Shu T. The challenges and solutions for cadmium-contaminated rice in China: a critical review. Environ Int. 2016;92–93:515–32.10.1016/j.envint.2016.04.042Search in Google Scholar PubMed

[3] Zhao FJ, Ma Y, Zhu YG, Tang Z, McGrath SP. Soil contamination in China: current status and mitigation strategies. Environ Sci Technol. 2015;49(2):750–9.10.1021/es5047099Search in Google Scholar PubMed

[4] Du HX, Nobuo H, Li FS. Responses of riverbed sediment bacteria to heavy metals: integrated evaluation based on bacterial density, activity and community structure under well-controlled sequencing batch incubation conditions. Water Res. 2018;130:115–26.10.1016/j.watres.2017.10.070Search in Google Scholar PubMed

[5] Qu C, Shi W, Guo J, Fang B, Wang S, Giesy JP, et al. China’s soil pollution control: choices and challenges. Environ Sci Technol. 2016;50(24):13181–83.10.1021/acs.est.6b05068Search in Google Scholar PubMed

[6] Solgi E, Esmaili-Sari A, Riyahi-Bakhtiari A, Hadipour M. Soil contamination of metals in the three industrial estates, Arak, Iran. Bull Environ Contamination Toxicol. 2012;88(4):634–8.10.1007/s00128-012-0553-7Search in Google Scholar PubMed

[7] Yang Q, Li Z, Lu X, Duan Q, Huang L, Bi J. A review of soil heavy metal pollution from industrial and agricultural regions in China: pollution and risk assessment. Sci Total Environ. 2018;642:690–700.10.1016/j.scitotenv.2018.06.068Search in Google Scholar PubMed

[8] Chen W, Li Q, Wang Z, Sun Z-J. Spatial distribution characteristics and pollution evaluation of heavy metals in farmland soils in China. Environ Sci. 2020;41(6):2822–33.Search in Google Scholar

[9] Zou T, Li T, Zhang X, Yu H, Huang H. Lead accumulation and Phyto stabilization potential of dominant plant species growing in a lead–zinc mine tailing. Environ Earth Sci. 2012;65(3):621–30.10.1007/s12665-011-1109-6Search in Google Scholar

[10] Yang GD, Zhang MZ, Feng T, Li M, Zhang HL, Deng YX, et al. Research status and prospect of remediation technology for heavy metal polluted soil. Mod Chem Ind. 2020;42(12):50–54,58.Search in Google Scholar

[11] Hu H, Huang Y, Huang Q, Liu YH, Hu C. Research progress in chemical passivation remediation of heavy metal pollution in farmland soil. J Plant Nutr Fertilizer. 2017;23(6):1676–85.Search in Google Scholar

[12] Mench M, Renella G, Gelsomino A, Landi L, Nannipieri P. Biochemical parameters and bacterial species richness in soils contaminated by sludge borne metals and remediated with inorganic soil amendments. Environ Pollut. 2006;144(1):24–31.10.1016/j.envpol.2006.01.014Search in Google Scholar PubMed

[13] Gao B, Wang X, Wang J, Fan BQ, Chang RX, Chen Q. Effects of chemical and clay mineral passivators on the transformation of phosphorus forms in cow manure straw compost. Trans Chin Soc Agric Eng. 2019;35(2):242–9.Search in Google Scholar

[14] Bolan N, Kunhikrishnan A, Thangarajan R, Kumpiene J, Park J, Makino T, et al. Remediation of heavy metals contaminated soils: To mobilize or to immobilize? J Hazard Mater. 2014;266:141–66.10.1016/j.jhazmat.2013.12.018Search in Google Scholar PubMed

[15] Yuan L, Xiaochun W, Xinde C. Research progress on the remediation of heavy metal contaminated soil based on chemical passivation of phosphate, carbonate and silicate materials. Environ Chem. 2012;31:16–25.Search in Google Scholar

[16] Li Y, Qu Z, Liu Y, Yu JQ, Lu DN, Zhang Z, et al. Passivation effect of passivation agent on As in anaerobic fermentation of pig manure and process optimization. Trans Chin Soc Agric Eng. 2018;34(12):245–50.Search in Google Scholar

[17] Chen Y, Dong Y. Research and application progress of soil amendments. J Ecol Environ. 2008;17(3):1282–9.Search in Google Scholar

[18] Sun J, Wang X. Research and application progress of soil conditioners. Soils Fertilizers China. 2013;1:10–7.Search in Google Scholar

[19] Chen G. Remediation effect and mechanism of mineral passivator on heavy metal polluted red soil. Guangzhou: South China University of Technology; 2017.Search in Google Scholar

[20] Dai Rui ZS, Jianli J, Liming Z. Research progress of non-metallic mineral environmental materials. China Non-metallic Miner Ind Guide. 2009;3:3–10.Search in Google Scholar

[21] Vondraková S, Hejcman M, Száková J. Effect of quick lime and dolomite application on mobility of elements (Cd, Zn, Pb, As, Fe, and Mn) in contaminated soils. Pol J Environ Stud. 2013;22(2):577–89.Search in Google Scholar

[22] Liang X, Xu Y, Wang L, Sun GH, Qin X, Sun Y. Study on in-situ passivation remediation effect of natural clay combined with phosphate fertilizer on farmland soil cadmium and lead pollution. Acta Scientiae Circumstantiae. 2011;31(5):1011–8.Search in Google Scholar

[23] Wang Y, Sun Y, Xu Y, Qin X, Wang L, Zhao LJ. Application of chicken manure on the enhancement effect of sepiolite passivation and restoration of cadmium contaminated vegetable soil and soil enzyme activity. Environ Sci. 2016;35:159–69.Search in Google Scholar

[24] Xiao L, Ding Y. The regulation and mechanism of biochar matrix combined with medical stone on soil-ryegrass system. Environ Sci. 2019;40(10):4668–77.Search in Google Scholar

[25] Miao X, Lai X, Li M, Li Y, Li N, Feng RY. Effects of different passivators on available heavy metal contents in soil and their accumulation in pakchoi. J Henan Agric Sci. 2020;49(8):63–71. 10.15933/j.cnki.1004-3268.2020.08.007.Search in Google Scholar

[26] Zhao J. Effects of amendment materials on soil physicochemical properties, availability of heavy metals, and plant uptake in contaminated agricultural soils: A Meta-analysis. Hangzhou, China: Zhe Jiang University; 2020.Search in Google Scholar

[27] Gao RL, Tang M, Fu QL, Guo GG, Li X, Hu HQ. Fractions transformation of heavy metals in compound contaminated soil treated with biochar, montmorillonite and mixed addition. Environ Sci. 2017;38(1):361–7.Search in Google Scholar

[28] Jiang J, Xu RK, Jiang TY, Li Z. Immobilization of Cu(II), Pb(II) and Cd(II) by the addition of rice straw derived biochar to a simulated polluted Ultisol. J Hazard Mater. 2012;229–230:145–50.10.1016/j.jhazmat.2012.05.086Search in Google Scholar PubMed

[29] Li FY, Shen WY, Wu X, Hu L, Wang W, Wang JF. Remediation of heavy metal contaminated soil by passivation of biochar complex minerals. Chin J Soil Sci. 2020;51(1):195–200.Search in Google Scholar

[30] Wu PP, Li LJ, Wang JJ, Li M. Effect of straw biochar on the transformation of heavy metals in polluted soil in mining area. J Ecol Rural Environ. 2017;33(5):453–9.Search in Google Scholar

[31] Wang X, Sun L, Lu L, Li Z, Shi XZ. Study on the passivation effect of different passivators on Zn, Cd, Pb, As in soil. Environ Protect Circular Econ. 2021;51(5):52–8, 84.Search in Google Scholar

[32] Du C, Wang P, Du J, Zhu HY, Bao L, Guo YR, et al. Influence of fixed addition of biochar, zeolite and bentonite on growth and Cd, Pb, Zn uptake by maize. Ecol Environ Sci. 2019;28(1):190–8.Search in Google Scholar

[33] Rees F, Germain C, Sterckeman T, Morel JL. Plant growth and metal uptake by a non-hyperaccumulating species (Lolium perenne) and a Cd-Zn hyperaccumulator (Noccaea caerulescens) in contaminated soils amended with biochar. Plant Soil. 2015;395(1–2):57–73.10.1007/s11104-015-2384-xSearch in Google Scholar

[34] Bashir S, Ali U, Shaaban M, Gulshan AB, Iqbal J, Khan S, et al. Role of sepiolite for cadmium (Cd) polluted soil restoration and spinach growth in wastewater irrigated agricultural soil. J Environ Manag. 2020;258:110020.10.1016/j.jenvman.2019.110020Search in Google Scholar PubMed

[35] Wang L, Xu Y, Sun G, Liang XF, Sun YB, Sun Y. Effect and mechanism of immobilization of paddy soil contaminated by cadmium and lead using sepiolite and phosphate. Ecol Environ Sci. 2012;21(2):314–20.Search in Google Scholar

[36] Li H, Shi WY, Shao HB, Shao MA. The remediation of the lead-polluted garden soil by natural zeolite. J Hazard Mater. 2009;169(1):1106–11.10.1016/j.jhazmat.2009.04.067Search in Google Scholar PubMed

[37] Castaldi P, Santona L, Enzo S, Melis P. Sorption processes and XRD analysis of a natural zeolite exchanged with Pb2+ Cd2+ and Zn2+ cations. J Hazard Mater. 2008;156(1–3):428–34.10.1016/j.jhazmat.2007.12.040Search in Google Scholar PubMed

[38] Ren LL, Cai ZP, Wang GN, Ye ZJ, Zhang YL, Cao MY. Effects of minerals with different immobilization mechanisms on heavy metals availability and soil microbial response. J Agro-Environ Sci. 2021;40(7):1470–80.Search in Google Scholar

[39] Liang N, Jing TF, Li ZW, Zeng PY, Wang CX, Xu YF, et al. Effects of different amendments on the availability of heavy metals and microbial communities in contaminated soils. Asian J Ecotoxicol. 2021;16(1):177–87 (in Chinese).Search in Google Scholar

[40] Guo LM, Ai SY, Tang MD, Li MJ, Yao JW, Wang YH, et al. Effect of amendment on Cd uptake by Brassia chinensis in Cd-contaminated soils. Chin J Eco-agriculture. 2010;18(3):654–8.10.3724/SP.J.1011.2010.00654Search in Google Scholar
Received: 2021-04-09
Revised: 2021-09-27
Accepted: 2021-10-15
Published Online: 2022-01-18

© 2022 Shenglan Ye et al., published by De Gruyter

This work is licensed under the Creative Commons Attribution 4.0 International License.

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https://doi.org/10.1515/chem-2021-0101
Keywords for this article
heavy metals; contaminated soils; solidification and stabilization; passivators; constant temperature culture
Creative Commons
BY 4.0

Articles in the same Issue

  1. Regular Articles
  2. Photocatalytic degradation of Rhodamine B in aqueous phase by bimetallic metal-organic framework M/Fe-MOF (M = Co, Cu, and Mg)
  3. Assessment of using electronic portal imaging device for analysing bolus material utilised in radiation therapy
  4. A detailed investigation on highly dense CuZr bulk metallic glasses for shielding purposes
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  12. Petrology and geochemistry of multiphase post-granitic dikes: A case study from the Gabal Serbal area, Southwestern Sinai, Egypt
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  21. Structural, physical, and mechanical properties of the TiO2 added hydroxyapatite composites
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  62. Clinical comprehensive and experimental assessment of the radioprotective effect of Annona muricata leaf extract to prevent cellular damage in the ileum tissue
  63. Effect of WC content on ultrasonic properties, thermal and electrical conductivity of WC–Co–Ni–Cr composites
  64. Influence of various class cleaning agents for prosthesis on Co–Cr alloy surface
  65. The synthesis of nanocellulose-based nanocomposites for the effective removal of hexavalent chromium ions from aqueous solution
  66. Study on the influence of physical interlayers on the remaining oil production under different development modes
  67. Optimized linear regression control of DC motor under various disturbances
  68. Influence of different sample preparation strategies on hypothesis-driven shotgun proteomic analysis of human saliva
  69. Determination of flow distance of the fluid metal due to fluidity in ductile iron casting by artificial neural networks approach
  70. Investigation of mechanical activation effect on high-volume natural pozzolanic cements
  71. In vitro: Anti-coccidia activity of Calotropis procera leaf extract on Eimeria papillata oocysts sporulation and sporozoite
  72. Determination of oil composition of cowpea (Vigna unguiculata L.) seeds under influence of organic fertilizer forms
  73. Activated partial thromboplastin time maybe associated with the prognosis of papillary thyroid carcinoma
  74. Treatment of rat brain ischemia model by NSCs-polymer scaffold transplantation
  75. Lead and cadmium removal with native yeast from coastal wetlands
  76. Characterization of electroless Ni-coated Fe–Co composite using powder metallurgy
  77. Ferrate synthesis using NaOCl and its application for dye removal
  78. Antioxidant, antidiabetic, and anticholinesterase potential of Chenopodium murale L. extracts using in vitro and in vivo approaches
  79. Study on essential oil, antioxidant activity, anti-human prostate cancer effects, and induction of apoptosis by Equisetum arvense
  80. Experimental study on turning machine with permanent magnetic cutting tool
  81. Numerical simulation and mathematical modeling of the casting process for pearlitic spheroidal graphite cast iron
  82. Design, synthesis, and cytotoxicity evaluation of novel thiophene, pyrimidine, pyridazine, and pyridine: Griseofulvin heterocyclic extension derivatives
  83. Isolation and identification of promising antibiotic-producing bacteria
  84. Ultrasonic-induced reversible blood–brain barrier opening: Safety evaluation into the cellular level
  85. Evaluation of phytochemical and antioxidant potential of various extracts from traditionally used medicinal plants of Pakistan
  86. Effect of calcium lactate in standard diet on selected markers of oxidative stress and inflammation in ovariectomized rats
  87. Identification of crucial salivary proteins/genes and pathways involved in pathogenesis of temporomandibular disorders
  88. Zirconium-modified attapulgite was used for removing of Cr(vi) in aqueous solution
  89. The stress distribution of different types of restorative materials in primary molar
  90. Reducing surface heat loss in steam boilers
  91. Deformation behavior and formability of friction stir processed DP600 steel
  92. Synthesis and characterization of bismuth oxide/commercial activated carbon composite for battery anode
  93. Phytochemical analysis of Ziziphus jujube leaf at different foliar ages based on widely targeted metabolomics
  94. Effects of in ovo injection of black cumin (Nigella sativa) extract on hatching performance of broiler eggs
  95. Separation and evaluation of potential antioxidant, analgesic, and anti-inflammatory activities of limonene-rich essential oils from Citrus sinensis (L.)
  96. Bioactivity of a polyhydroxy gorgostane steroid from Xenia umbellata
  97. BiCAM-based automated scoring system for digital logic circuit diagrams
  98. Analysis of standard systems with solar monitoring systems
  99. Structural and spectroscopic properties of voriconazole and fluconazole – Experimental and theoretical studies
  100. New plant resistance inducers based on polyamines
  101. Experimental investigation of single-lap bolted and bolted/bonded (hybrid) joints of polymeric plates
  102. Investigation of inlet air pressure and evaporative cooling of four different cogeneration cycles
  103. Review Articles
  104. Comprehensive review on synthesis, physicochemical properties, and application of activated carbon from the Arecaceae plants for enhanced wastewater treatment
  105. Research progress on speciation analysis of arsenic in traditional Chinese medicine
  106. Recent modified air-assisted liquid–liquid microextraction applications for medicines and organic compounds in various samples: A review
  107. An insight on Vietnamese bio-waste materials as activated carbon precursors for multiple applications in environmental protection
  108. Antimicrobial activities of the extracts and secondary metabolites from Clausena genus – A review
  109. Bioremediation of organic/heavy metal contaminants by mixed cultures of microorganisms: A review
  110. Sonodynamic therapy for breast cancer: A literature review
  111. Recent progress of amino acid transporters as a novel antitumor target
  112. Aconitum coreanum Rapaics: Botany, traditional uses, phytochemistry, pharmacology, and toxicology
  113. Corrigendum
  114. Corrigendum to “Petrology and geochemistry of multiphase post-granitic dikes: A case study from the Gabal Serbal area, Southwestern Sinai, Egypt”
  115. Corrigendum to “Design of a Robust sliding mode controller for bioreactor cultures in overflow metabolism via an interdisciplinary approach”
  116. Corrigendum to “Statistical analysis on the radiological assessment and geochemical studies of granite rocks in the north of Um Taghir area, Eastern Desert, Egypt”
  117. Corrigendum to “Aroma components of tobacco powder from different producing areas based on gas chromatography ion mobility spectrometry”
  118. Corrigendum to “Mechanical properties, elastic moduli, transmission factors, and gamma-ray-shielding performances of Bi2O3–P2O5–B2O3–V2O5 quaternary glass system”
  119. Erratum
  120. Erratum to “Copper(ii) complexes supported by modified azo-based ligands: Nucleic acid binding and molecular docking studies”
  121. Special Issue on Applied Biochemistry and Biotechnology (ABB 2021)
  122. Study of solidification and stabilization of heavy metals by passivators in heavy metal-contaminated soil
  123. Human health risk assessment and distribution of VOCs in a chemical site, Weinan, China
  124. Preparation and characterization of Sparassis latifolia β-glucan microcapsules
  125. Special Issue on the Conference of Energy, Fuels, Environment 2020
  126. Improving the thermal performance of existing buildings in light of the requirements of the EU directive 2010/31/EU in Poland
  127. Special Issue on Ethnobotanical, Phytochemical and Biological Investigation of Medicinal Plants
  128. Study of plant resources with ethnomedicinal relevance from district Bagh, Azad Jammu and Kashmir, Pakistan
  129. Studies on the chemical composition of plants used in traditional medicine in Congo
  130. Special Issue on Applied Chemistry in Agriculture and Food Science
  131. Strip spraying technology for precise herbicide application in carrot fields
  132. Special Issue on Pharmacology and Metabolomics of Ethnobotanical and Herbal Medicine
  133. Phytochemical profiling, antibacterial and antioxidant properties of Crocus sativus flower: A comparison between tepals and stigmas
  134. Antioxidant and antimicrobial properties of polyphenolics from Withania adpressa (Coss.) Batt. against selected drug-resistant bacterial strains
  135. Integrating network pharmacology and molecular docking to explore the potential mechanism of Xinguan No. 3 in the treatment of COVID-19
  136. Chemical composition and in vitro and in vivo biological assortment of fixed oil extracted from Ficus benghalensis L.
  137. A review of the pharmacological activities and protective effects of Inonotus obliquus triterpenoids in kidney diseases
  138. Ethnopharmacological study of medicinal plants in Kastamonu province (Türkiye)
  139. Protective effects of asperuloside against cyclophosphamide-induced urotoxicity and hematotoxicity in rats
  140. Special Issue on Essential Oil, Extraction, Phytochemistry, Advances, and Application
  141. Identification of volatile compounds and antioxidant, antibacterial, and antifungal properties against drug-resistant microbes of essential oils from the leaves of Mentha rotundifolia var. apodysa Briq. (Lamiaceae)
  142. Phenolic contents, anticancer, antioxidant, and antimicrobial capacities of MeOH extract from the aerial parts of Trema orientalis plant
  143. Chemical composition and antimicrobial activity of essential oils from Mentha pulegium and Rosmarinus officinalis against multidrug-resistant microbes and their acute toxicity study
  144. Special Issue on Marine Environmental Sciences and Significance of the Multidisciplinary Approaches
  145. An insightful overview of the distribution pattern of polycyclic aromatic hydrocarbon in the marine sediments of the Red Sea
  146. Antifungal–antiproliferative norcycloartane-type triterpenes from the Red Sea green alga Tydemania expeditionis
  147. Solvent effect, dipole moment, and DFT studies of multi donor–acceptor type pyridine derivative
  148. An extensive assessment on the distribution pattern of organic contaminants in the aerosols samples in the Middle East
  149. Special Issue on 4th IC3PE
  150. Energetics of carboxylic acid–pyridine heterosynthon revisited: A computational study of intermolecular hydrogen bond domination on phenylacetic acid–nicotinamide cocrystals
  151. A review: Silver–zinc oxide nanoparticles – organoclay-reinforced chitosan bionanocomposites for food packaging
  152. Green synthesis of magnetic activated carbon from peanut shells functionalized with TiO2 photocatalyst for Batik liquid waste treatment
  153. Coagulation activity of liquid extraction of Leucaena leucocephala and Sesbania grandiflora on the removal of turbidity
  154. Hydrocracking optimization of palm oil over NiMoO4/activated carbon catalyst to produce biogasoline and kerosine
  155. Special Issue on Pharmacology and metabolomics of ethnobotanical and herbal medicine
  156. Cynarin inhibits PDGF-BB-induced proliferation and activation in hepatic stellate cells through PPARγ
  157. Special Issue on The 1st Malaysia International Conference on Nanotechnology & Catalysis (MICNC2021)
  158. Surfactant evaluation for enhanced oil recovery: Phase behavior and interfacial tension
  159. Topical Issue on phytochemicals, biological and toxicological analysis of aromatic medicinal plants
  160. Phytochemical analysis of leaves and stems of Physalis alkekengi L. (Solanaceae)
  161. Phytochemical and pharmacological profiling of Trewia nudiflora Linn. leaf extract deciphers therapeutic potentials against thrombosis, arthritis, helminths, and insects
  162. Pergularia tomentosa coupled with selenium nanoparticles salvaged lead acetate-induced redox imbalance, inflammation, apoptosis, and disruption of neurotransmission in rats’ brain
  163. Protective effect of Allium atroviolaceum-synthesized SeNPs on aluminum-induced brain damage in mice
  164. Mechanism study of Cordyceps sinensis alleviates renal ischemia–reperfusion injury
  165. Plant-derived bisbenzylisoquinoline alkaloid tetrandrine prevents human podocyte injury by regulating the miR-150-5p/NPHS1 axis
  166. Network pharmacology combined with molecular docking to explore the anti-osteoporosis mechanisms of β-ecdysone derived from medicinal plants
  167. Chinese medicinal plant Polygonum cuspidatum ameliorates silicosis via suppressing the Wnt/β-catenin pathway
  168. Special Issue on Advanced Nanomaterials for Energy, Environmental and Biological Applications - Part I
  169. Investigation of improved optical and conductivity properties of poly(methyl methacrylate)–MXenes (PMMA–MXenes) nanocomposite thin films for optoelectronic applications
  170. Special Issue on Applied Biochemistry and Biotechnology (ABB 2022)
  171. Model predictive control for precision irrigation of a Quinoa crop
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