The Use of Chitosan as A Coagulant in Wastewater Treatment

Abstract

In this study, the potential of chitosan as a coagulant for the treatment of wastewater was investigated. The effectiveness of chitosan was evaluated by measuring the removal efficiency of various pollutants, including turbidity, TSS, TDS, COD, BOD5, nitrate, and phosphate. The experimental results showed that chitosan was effective in removing pollutants from wastewater, with the highest removal efficiency achieved at a dosage of 10g. The statistical analysis confirmed that there was a significant difference in the removal efficiency of chitosan at different dosages. This study tends to explore the use of bio-material such as chitosan as a sustainable and effective coagulant for wastewater treatment instead of the regular use of synthetic coagulants like alum and also highlights the need for further research to optimize the operating conditions and evaluate the economic feasibility of chitosan coagulation.

Keywords

• Coagulant
• Chitosan
• Demineralization
• flocculation
• Wastewater

References

1. Ahmad, T., Haydar, S., Rizwan, M., Tariq, M., & Hasan, A. (2021). Chitosan-based nanocomposites for wastewater treatment: A review of recent advances. Journal of Environmental
2. Chemical Engineering, 9(2), 105310. https://doi.org/10.1016/j.jece.2021.105310
3. Abdi, S., Behzadi, M., & Soltani, R. D. C. (2016). Removal of heavy metals from industrial wastewater using bentonite clay and zeolite: a review. Environmental Science and
4. Pollution Research, 23(2), 900-917. https://doi.org/10.1007/s11356-015-5655-7
5. Alexander J. A, M.A.A. Zaini, A. Surajudeen, E. U. Aliyu and A.U. Omeiza (2018): Surface modification of low-cost bentonite adsorbents—A review, Particulate Science and Technology, DOI: 10.1080/02726351.2018.1438548
6. Alzahrani, E., Elkady, M., Amr, M. A., & Abdel-Jaber, N. (2022). Chitosan-based materials for water purification: A review. Journal of Polymers and the Environment, 30(1), 1-22. https://doi.org/10.1007/s10924-021-02271-x
7. Bhatnagar, A., & Sillanpää, M. (2009). Utilization of agro-industrial and municipal waste materials as potential adsorbents for water treatment—A review. Chemical engineering journal, 157(2-3), 277-296
8. Chik, C.E., Setyo, B.K., Zuhayra N.A and Kasan N.A.(2019). Chitosan coagulant: Coagulation/flocculation studies on turbidity removal from aquaculture wastewater by response surface methodology. International Journal of Environmental Science and Technology. DOI:10.1007/s13762-023-04989-4

9. Eric, L., Nadia, C., Fourmentin, M., and Crini .G. (2019). Chitosan for direct bio flocculation of wastewater. Environmental Chemistry Letters. https://doi.org/10.1007/s10311-019-00900
10. Emam, M., Soliman, A., & Moustafa, Y. (2021). Chitosan-based nanomaterials for water and wastewater treatment: A review. Journal of Molecular Liquids, 333, 116666. https://doi.org/10.1016/j.molliq.2021.116666
11. Kennedy, K.K., Maseka, K.J. and Mbulo, M. (2018): Selected Adsorbents for Removal of Contaminants from Wastewater: Towards Engineering Clay Minerals. Open Journal of Applied Sciences, 8, 355-369 https://doi.org/10.4236/ojapps.2018.88027
12. Lee, H. Y., Jeon, Y. J., Park, P. J., & Kim, S. K. (2018). Enhanced coagulation of landfill leachate using chitosan-ferric chloride composite coagulant. Journal of Environmental Management, 209, 459-464. https://doi.org/10.1016/j.jenvman.2017.12.001
13. Li, Y., Zhao, L., Li, J., Lu, X., Zhang, L., & Li, Q. (2022). Chitosan-based materials for wastewater treatment: A review. Journal of Environmental Chemical Engineering, 10(1), 106432. https://doi.org/10.1016/j.jece.2021.106432
14. Liu, C., and Zhang, X. (2019). A review of modified bentonite as a promising adsorbent for environmental remediation. Journal of Environmental Management, 238, 210-222. https://doi.org/10.1016/j.jenvman.2019.02.018
15. Marandi, R., Eskandari, H., & Zinatizadeh, A. A. (2022). Chitosan-based materials for water and wastewater treatment: A review of recent advances. Chemical Engineering Journal, 427, 131947. https://doi.org/10.1016/j.cej.2021.131947
16. Mona, K., Ahmad, K., Holaila, H., Olamaa, Z. (2014). Heavy Metals Removal Using Activated Carbon, Silica and Silica Activated Carbon Composite. Energy Procedia 50,113– 120.
17. Ramesh, S. T., & Gandhimathi, R. (2016). Chromium removal from industrial wastewater using modified bentonite clay. Journal of Environmental Management, 182, 35-42. https://doi.org/10.1016/j.jenvman.2016.07.037
18. Rezapour, M; H. Abdollahi, H. Khorrami and J.T. Valmazuei (2014): Application of raw, HCl- and H2SO4-activated bentonite as adsorbents for the removal of Zn2+ and Pb2+ from aqueous solution, Desalination and Water Treatment, DOI: 10.1080/19443994.2014.987826
19. Nidheesh, P. V., & Gandhimathi, R. (2012). Trends in electrocoagulation for water and wastewater treatment: an overview. Desalination and Water Treatment, 39(1-3), 1-12.
20. Pan, X., Wu, Q., Zhang, Y., & Yao, X. (2022). Chitosan and its derivatives for removal of pollutants from water: A review of recent developments. Journal of Environmental Sciences, 114, 41- 55. https://doi.org/10.1016/j.jes.2021.04.014
21. Saha, A. K., Ahammad, S. Z., Paul, A. K., & Hossain, M. A. (2017). Chitosan based adsorbents for wastewater treatment—A review. Journal of Environmental Management, 198, 330-338. https://doi.org/10.1016/j.jenvman.2017.04.045
22. Suresh Kumar, K., Porkodi, K., & Rocha, F. (2015). Optimization of heavy metal removal using modified bentonite clay. Journal of Environmental Management, 151, 682-693. https://doi.org/10.1016/j.jenvman.2014.12.025
23. Suresh.S., Umesh .M and Santhosh S.A. (2022). Wastewater treatment using chitosan and its derivatives: A mini review on latest developments. Notulac Scientia Biologicae, Vol14, issue 4, https://doi.org/10.15835/nsb14411369
24. Sheikh A.S, Alsagabi, S. Almeataq, M. Alajyan, T. and Goumri, S.S (2019). Removal of Cd(II) from industrial wastewater using locally available Bentonite Clay. E3S Web of Conferences 117, 00008. https://doi.org/10.1051/e3sconf/201911700008
25. Su, L., Li, Y., Li, B., Li, C., Wang, C., Li, J., & Li, J. (2020). Application of chitosan in water and wastewater treatment: A review. Journal of Environmental Chemical Engineering, 8(6), 104218. https://doi.org/10.1016/j.jece.2020.104218
26. Tadesse, S.H (2022). Application of Ethiopian bentonite for water treatment containing zinc. Journal of Emerging Contaminants 8 (1): 113-122.
27. Uyigue, L and Rockson-itiveh, D. (2021): Evaluation of Proposed Treatment Process for Abattoir Wastewater. International Journal of Innovative Science and Research Technology. Volume 6, Issue 4.
28. Xie, Y., Wu, X., Huang, Z., Luo, X., Wang, Y., & Li, H. (2021). Efficient removal of anionic dyes from wastewater using a novel cationic chitosan-based flocculant: Performance and mechanism. Journal of Cleaner Production, 314, 127838. https://doi.org/10.1016/j.jclepro.2021.127838
29. Zhao, H., Wang, Y., Luo, X., & Li, H. (2019). Chitosan coagulation for the treatment of synthetic dye wastewater: Effects of pH and coagulant dosage. Journal of Environmental Sciences, 77, 71-79. https://doi.org/10.1016/j.jes.2018.08.005