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Green and eco-friendly synthesis of TiO2 nanoparticles and their application for removal of cadmium from wastewater: reaction kinetics study

  • Muhammad Atif Irshad , Muhammad Bilal Shakoor , Rab Nawaz EMAIL logo , Tahira Yasmeen , Muhammad Saleem Arif , Muhammad Rizwan , Muhammad Zia ur Rehman , Sajid Rashid Ahmad , Maria Latif , Iqra Nasim und Shafaqat Ali EMAIL logo
Veröffentlicht/Copyright: 24. Februar 2022
Zeitschrift für Physikalische Chemie
Aus der Zeitschrift Zeitschrift für Physikalische Chemie Band 236 Heft 5

Abstract

The heavy metal cadmium (Cd) is known to be a widespread environmental contaminant and a potential toxin that may adversely affect human health across the globe. Green nanotechnology has recently received a lot of attention for developing eco-friendly, low-cost renewable and sustainable materials for the efficient removal of persistent contaminants from wastewater, including heavy metals (HMs). The current study compared the ability of titanium dioxide nanoparticles (TiO2 NPs) synthesized from Trianthema portulacastrum (A) and Chenopodium quinoa (B) extracts to remove Cd from wastewater. The washed biomass of both the plants was dried under shade for a few days and was ground into the fine particles in a blender. The powdered biomass of T. portulacastrum and C. quinoa was soaked separately in distilled water (@ 10 g/100 ml) for 36 h. The stock solution of titanium (0.3 M) was prepared from concentrated titanium tetraisopropoxide (TTIP) and was mixed with the plant extracts at 1:2 ratio of extract to TTIP solution with continuous stirring at room temperature. A light brown scum like TiO2-NPs were obtained at the bottom of china dish and calcined at 450 °C for 4 h. Finally, after natural cooling, the TiO2-NPs were collected and used for the sorption of Cd through wastewater. Sorption attributes of both TiO2 NPs (A, B) were investigated over contact time, dosage of adsorbent, pH, and initial concentration of Cd. Maximum sorption was obtained (46 mgg−1) by TiO2 NPs (A), followed by 44 mg Cd g−1 with TiO2 NPs (B) at pH 4.2, an optimum adsorbent dosage 0.7 g L−1, Cd initial level 30 mg L−1, with contact time of 2 h. Pseudo-second-order kinetic model was suited for adsorption experimental data using both nanoparticles. These results validated the potential use of TiO2 NPs to remove liquified cadmium at high concentrations from the industrial wastewater.

Keywords: cadmium; clean water and sanitation (SDGs 6); green synthesis; nanoparticles; sorption; titanium dioxide nanoparticles
Corresponding authors: Rab Nawaz, Department of Environmental Sciences, The University of Lahore, Lahore, 54000, Pakistan, E-mail: ; and Shafaqat Ali, Department of Environmental Sciences and Engineering, Government College University Faisalabad, Faisalabad, 38000, Pakistan; Department of Biological Sciences and Technology, China Medical University, Taichung, 40402, Taiwan,

Acknowledgments

The authors would like to thank the Department of Environmental Sciences and Engineering, Government College University Faisalabad and Department of Environmental Sciences, The University of Lahore, Lahore, Pakistan.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: None declared.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-11-15
Accepted: 2022-02-10
Published Online: 2022-02-24
Published in Print: 2022-05-25

© 2022 Walter de Gruyter GmbH, Berlin/Boston

Artikel in diesem Heft

  1. Frontmatter
  2. Original Papers
  3. Facile synthesis and adsorption characteristics of a hybrid composite based on ethyl acetoacetate modified chitosan/calcium alginate/TiO2 for efficient recovery of Ni(II) from aqueous solution
  4. Spectroscopic characterization of biosynthesized lead oxide (PbO) nanoparticles and their applications in PVC/graphite-PbO nanocomposites
  5. Green and eco-friendly synthesis of TiO2 nanoparticles and their application for removal of cadmium from wastewater: reaction kinetics study
  6. Catalytic degradation of MO and MB dyes under solar and UV light irradiation using ZnO fabricated using Syzygium Cumini leaf extract
  7. Graphene-substrate fabricated oxides and zinc oxide catalysts for the degradation of the methylene blue in the industrial wastewater
https://doi.org/10.1515/zpch-2021-3171
Schlagwörter für diesen Artikel
cadmium; clean water and sanitation (SDGs 6); green synthesis; nanoparticles; sorption; titanium dioxide nanoparticles

Artikel in diesem Heft

  1. Frontmatter
  2. Original Papers
  3. Facile synthesis and adsorption characteristics of a hybrid composite based on ethyl acetoacetate modified chitosan/calcium alginate/TiO2 for efficient recovery of Ni(II) from aqueous solution
  4. Spectroscopic characterization of biosynthesized lead oxide (PbO) nanoparticles and their applications in PVC/graphite-PbO nanocomposites
  5. Green and eco-friendly synthesis of TiO2 nanoparticles and their application for removal of cadmium from wastewater: reaction kinetics study
  6. Catalytic degradation of MO and MB dyes under solar and UV light irradiation using ZnO fabricated using Syzygium Cumini leaf extract
  7. Graphene-substrate fabricated oxides and zinc oxide catalysts for the degradation of the methylene blue in the industrial wastewater
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