Repurposing bamboo scraps as carbon adsorbents for cephalexin decontamination in wastewater
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Gautham Krishna
Abstract
Wastewater contaminants pose serious environmental threats due to their enduring presence and harmful effects on ecosystems, making it essential to implement robust treatment methods before releasing effluents into natural environments. Among the diverse range of treatment technologies available, adsorption processes have proven to be both economically viable and exceptionally effective solutions for wastewater remediation. This research examines the performance of zinc chloride-activated bamboo carbon (BAC) for eliminating Cephalexin antibiotic compounds from contaminated water systems. Brunauer-Emmett-Teller characterization demonstrated that BAC exhibits remarkable structural properties, featuring a large specific surface area of 790 m2/g and nanopores measuring 0.8 nm in diameter. Surface morphology analysis through scanning electron microscopy, combined with Fourier transform infrared spectroscopy, revealed diverse functional group distributions across the BAC surface, while zeta potential measurements confirmed negative surface charging characteristics. Laboratory findings demonstrated that BAC exhibited peak Cephalexin uptake performance of 37.56 mg/g. The adsorption behaviour was successfully modelled using Langmuir isotherms (R2 = 0.9647) and pseudo-second-order kinetic equations (R2 = 0.999), demonstrating strong agreement between theoretical predictions and experimental observations. These findings establish BAC as a promising material for mitigating antibiotic contamination in water treatment applications. The development of BAC technology represents a significant advancement in sustainable water treatment, as it transforms agricultural waste into a high-performance adsorbent that can simultaneously address both waste management and water pollution challenges. This innovative approach offers a cost-effective alternative to conventional treatment methods while providing superior removal efficiency, positioning it as a next-generation solution for pharmaceutical contaminant remediation in developing nations where antibiotic pollution is increasingly problematic.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The author states no conflict of interest.
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Research funding: None declared.
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Data availability: Not applicable.
References
1. Badshah, K.; Ali, Q.; Khan, A. A.; Ahmad, R.; Ahmad, I. Experimental and DFT Studies of Antibiotics Removal Through Activated Carbon: a step-by-step Adsorption Process at Atomic Level. ChemistrySelect 2024, 9 (44), e202402422. https://doi.org/10.1002/slct.202402422.Search in Google Scholar
2. Amin, M.; Shah, H. H.; Iqbal, A.; Farooqi, Z. U. R.; Krawczuk, M.; Zia, A. Conversion of Waste Biomass into Activated Carbon and Evaluation of Environmental Consequences Using Life Cycle Assessment. Appl. Sci. 2022, 12 (11), 5741. https://doi.org/10.3390/app12115741.Search in Google Scholar
3. Tonu, N. T.; Kundu, S.; Islam, M. M.; Dhar, P. K.; Khandaker, T.; Anik, M. A. A. M.; Dutta, S. K.; Hasan, M. K.; Hossain, M. S. Fabrication of Waste Biomass-Derived KOH Activated Carbon for Enhanced CO2 Capture. New J. Chem. 2024, 48, 20212–20224. https://doi.org/10.1039/D4NJ04495A.Search in Google Scholar
4. Ullah, S.; Shah, S. S. A.; Altaf, M.; Hossain, I.; El Sayed, M. E.; Kallel, M.; El-Bahy, Z. M.; Rehman, A. U.; Najam, T.; Nazir, M. A. Activated Carbon Derived from Biomass for Wastewater Treatment: Synthesis, Application and Future Challenges. J. Anal. Appl. Pyrolysis 2024, 179, 106480. https://doi.org/10.1016/j.jaap.2024.106480.Search in Google Scholar
5. Boulika, H.; El Hajam, M.; Hajji Nabih, M.; Idrissi Kandri, N.; Zerouale, A. Activated Carbon from Almond Shells Using an eco-compatible Method: Screening, Optimization, Characterization, and Adsorption Performance Testing. RSC Adv. 2022, 12 (53), 34393–34403. https://doi.org/10.1039/D2RA06220H.Search in Google Scholar PubMed PubMed Central
6. Saleem, J.; Moghal, Z. K. B.; Pradhan, S.; McKay, G. High-Performance Activated Carbon from Coconut Shells for Dye Removal: Study of Isotherm and Thermodynamics. RSC Adv. 2024, 14 (46), 33797–33808. https://doi.org/10.1039/D4RA06287F.Search in Google Scholar PubMed PubMed Central
7. Seffah, K.; Lakehal, I.; Ouriache, H.; Sadoun, L.; Badis, D.; Khenchali, K.; Bendhina, A.; Nadji, H.; Ghernaout, D. Pecan Shells-Based Activated Carbon for the Removal of Copper Metal Ions: Optimization of the Adsorption Process Using a Full Factorial Design. Int. J. Environ. Anal. Chem. 2024, 105 (9), 2111–2130; https://doi.org/10.1080/03067319.2024.2306179.Search in Google Scholar
8. Yildiz, S.; Erdem, M. Prepared Activated Carbon from Hazelnut Shell Where Coated Nanocomposite with Ag+ Used for Antibacterial and Adsorption Properties. Environ. Sci. Pollut. Res. 2022, 29 (47), 71365–71377. https://doi.org/10.1007/s11356-022-22486-5.Search in Google Scholar
9. Kwiatkowski, M.; Broniek, E. Carbon Adsorbents Obtained from Pistachio Nut Shells Used as Potential Ingredients of Drinking Water Filters. Molecules 2023, 28 (11), 4497. https://doi.org/10.3390/molecules28114497.Search in Google Scholar PubMed PubMed Central
10. Zhang, Y.; Li, H.; Wang, X.; Liu, J. Review on Coal-Based Activated Carbon: Preparation, Modification, Application, Regeneration, and Perspectives. Energy Fuels 2023, 37 (16), 11622–11642. https://doi.org/10.1021/acs.energyfuels.3c01866.Search in Google Scholar
11. Chen, W.; Liu, R.; Sun, Y.; Xu, F. Post-Synthetic Modification of MOFs with Amine Groups for Improved CO2 and Organic Dye Capture. ACS Appl. Mater. Interfaces 2023, 15 (8), 11234–11245. https://doi.org/10.1021/acsami.2c23011.Search in Google Scholar PubMed PubMed Central
12. Zhao, X.; Li, Y.; Yang, J.; Wang, H.; Zhang, L. Tuning Pore Architecture in Covalent Organic Frameworks for Enhanced Adsorption of Bulky Organic Pollutants. Adv. Funct. Mater. 2023, 33 (12), 2301234. https://doi.org/10.1002/adfm.202301234.Search in Google Scholar
13. Li, X.; Zhang, Y.; Wang, Z.; Chen, G. Bamboo-Derived Activated Carbon with Hierarchical Porosity for High-Performance Supercapacitors and Dye Adsorption. Chem. Eng. J. 2023, 459, 141532. https://doi.org/10.1016/j.cej.2023.141532.Search in Google Scholar
14. Nguyen, T. H.; Tran, H. N.; Vo, D.-V. N. Sustainable Production of Activated Carbon from Bamboo Waste for Environmental Remediation: a Circular Economy Approach. J. Clean. Prod. 2023, 414, 137568. https://doi.org/10.1016/j.jclepro.2023.137568.Search in Google Scholar
15. Gratani, M.; Pandey, S.; Harries, K. A. Bamboo as a Sustainable Construction Material: Case Studies from Asia and Comparative Mechanical Performance. Constr. Build. Mater. 2022, 319, 126102. https://doi.org/10.1016/j.conbuildmat.2021.126102.Search in Google Scholar
16. Farma, R.; Awitdrus, A.; Deraman, M.; Gani, S.; Talib, I. A.; Basri, N. H.; Nor, R. M.; Hashim, U. Preparation of Highly Porous Binderless Activated Carbon Electrodes from Fibres of Oil Palm Empty Fruit Bunches for Application in Supercapacitors. Bioresour. Technol. 2021, 132, 254–261; https://doi.org/10.1016/j.biortech.2021.125669.Search in Google Scholar PubMed
17. Kuok, K. K.; Bin Bakri, M. K.; Chan, C. P.; Rahman, M. R.; Namakka, M.; Said, K. A. M.; Yun, C. M.; Rahman, M. M. Merits of Bamboo Utilization in Earth Preservation, Water, and Wastewater Treatment: a Mini Review. BioResources 2024, 19 (2), 3921–3944. https://doi.org/10.15376/biores.19.2.3921-3944.Search in Google Scholar
18. Nguyen, T. H.; Tran, M. K.; Le, V. T.; Pham, D. Q. Activated Bamboo Charcoal in Water Treatment Applications. Water Treat. Rev. 2024, 12 (3), 145–158.Search in Google Scholar
19. Rahman, M. R.; Hasan, M. M.; Hossain, M. S.; Islam, M. T. Bamboo for Producing Charcoal and Biochar for Versatile Applications. Biomass Convers. Biorefin. 2023, 14 (8), 2456–2470; https://doi.org/10.1007/s13399-022-02639-w.Search in Google Scholar
20. Zhang, L.; Promarak, V.; Krittamet, P.; Lawtae, P. Pore Development Analysis in Bamboo‑Based Activated Carbon During CO₂ Activation. Molecules 2021, 26 (18), 5641; https://doi.org/10.3390/molecules26185641.Search in Google Scholar PubMed PubMed Central
21. Ahmed, M. J.; Hameed, B. H. Recent Developments in Utilization of Activated Carbon for Pharmaceuticals Removal. J. Water Proc. Eng. 2022, 49, 103062. https://doi.org/10.1016/j.jwpe.2022.103062.Search in Google Scholar
22. Ghimire, M.; Choi, S.; Kim, H. Y. Physicochemical Characterization and Adsorption Potential of Bamboo Biochar for Emerging Contaminants. Environ. Chem. Lett. 2022, 20, 419–431. https://doi.org/10.1007/s10311-021-01283-w.Search in Google Scholar
23. Kwiatkowski, M.; Broniek, E. Adsorptive Performance of Activated Carbon Obtained from Bamboo Using Physical and Chemical Activation. Materials 2021, 14 (4), 953. https://doi.org/10.3390/ma14040953.Search in Google Scholar PubMed PubMed Central
24. Lamaming, J.; Wahab, R. A.; Sulaiman, O. Development of Bamboo Activated Carbon for Wastewater Treatment Applications: Surface Chemistry and Adsorption Behavior. Sci. Rep. 2023, 13, 8657. https://doi.org/10.1038/s41598-023-35877-6.Search in Google Scholar
25. Lee, S. Y.; Kim, K. J.; Park, Y. G. Surface-Functionalized Bamboo Activated Carbon for Cephalexin Adsorption from Pharmaceutical Wastewater. Environ. Res. 2023, 229, 115904. https://doi.org/10.1016/j.envres.2023.115904.Search in Google Scholar PubMed PubMed Central
26. Muthusaravanan, S.; Ramakrishnan, R.; Vignesh, N. Pharmaceutical Removal Using Biochar Derived from Bamboo Biomass: a Review. Environ. Nanotechnol. Monit. Manag. 2022, 17, 100665. https://doi.org/10.1016/j.enmm.2021.100665.Search in Google Scholar
27. Mandal, S.; Stephen, D.; Janardhanan, S. K. Activated Carbon with Composite Pore Structures Made from Peanut Shell and Areca Nut Fibers as Sustainable Adsorbent Material for the Efficient Removal of Active Pharmaceuticals from Aqueous Media. RSC Sustain. 2024, 2, 3022–3035. https://doi.org/10.1039/D4SU00262H.Search in Google Scholar
28. Sun, S.; Yu, Q.; Li, M.; Zhao, H.; Wang, Y.; Ji, X. Effect of Carbonization Temperature on Characterization and Water Vapor Adsorption of coffee-shell Activated Carbon. J. Thermoplast. Compos. Mater. 2020, 35 (3), 516–531. https://doi.org/10.1177/0263617420950994.Search in Google Scholar
29. Kayiwa, D.; Kiggundu, N.; Byaruhanga, J. K. Mesoporous Activated Carbon Yielded from Pre-leached Cassava Peels. Bioresour. Bioprocess. 2022, 9, 1–15. https://doi.org/10.1186/s40643-021-00407-0.Search in Google Scholar PubMed PubMed Central
30. Weber, W. J.Jr.; Morris, J. C. Kinetics of Adsorption on Carbon from Solutions. J. San. Eng. Div. 1963, 89 (SA2), 31–39.10.1061/JSEDAI.0000430Search in Google Scholar
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