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April 8, 2024
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April 8, 2024
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Abstract

Purpose: This study investigates the effectiveness of polymeric flocculation in removing heavy metals from leachate through filtration, sedimentation, and precipitation, aiming to separate and eliminate particulate matter. to separate and remove particulate matter.


Method:  This study investigated the use of alum and chitosan to remove heavy metals from leachate. The addition of a polymeric flocculant, chitosan, promoted the formation of stable flocs, which effectively removed heavy metals. Chitosan, a natural biopolymer, was found to be a promising alternative to synthetic polymers.


Main Findings: The experimental results demonstrated that alum outperformed chitosan in terms of removing heavy metals. Under optimal conditions, an alum dosage of 6 mg/l at a pH of 6.23 resulted in copper and magnesium removal efficiencies of 84% and 92%, respectively. In contrast, the optimal chitosan dosage was 8 mg/l at a pH of 7.5, with copper and magnesium removal efficiencies of 43.1% and 91.8%, respectively.


Implications: Leachate treatment reduces heavy metals and organic compounds, controls odors, and generates foam indicating the presence of gases like carbon dioxide and methane. These gases can be harnessed for clean energy production and green hydrogen development. harnessed for clean energy production and green hydrogen development.


Novelty: This study is the first to scientifically analyze leachate treatment at the Barka landfill. Chitosan, a natural polymer, effectively removes suspended matter and heavy metals, reducing their concentrations. removes suspended matter and heavy metals, reducing their concentrations.

Keywords

Leachate, Chitosan Flocculants Coagulation Heavy metals Sustainability

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This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Authors retain the copyright without restrictions for their published content in this journal. GCTL is a Sherpa Romeo Journal. 

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This is an open-access article distributed under the terms of  Creative Commons License

Author Biographies

B.M. Sangeetha, National University of Science & Technology

Senior Lecturer, Mechanical & Industrial Engineering Department

Khaloud Al-Maqbali

Researcher in wastewater treatment and landfill

How to Cite
Sangeetha, B., & Al-Maqbali, K. (2024). Polymeric Flocculation as a Sustainable Solution for Heavy Metal Removal from Leachate in Barka Landfill, Oman. Green Chemistry & Technology Letters, 10(1), 01–09. https://doi.org/10.18510/gctl.2024.1011
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References

  1. Ab Jalil, M., Abdul Aziz, R. & Kamarudzaman, A., 2011. Removal of Heavy Metals of Heavy Metals from Landfill Leachate Using Horizontal and Vertical Subsurface Flow Constructed Wetland Planted. International Journal of Civil & Environmental Engineering. 11(5). P. 1-7: http://www.ijens.org/vol_11_i_05/115005-2424-ijcee-ijens.pdf
  2. Ahmed, et al. 2008. Improvement of alum and PACl coagulation by polyacrylamides (PAMs) for the treatment of pulp and paper mill wastewater. Chemical Engineering Journal. 137. P. 510-517. https://doi.org/10.1016/j.cej.2007.03.088
  3. Amuda, et al. 2006. Coagulation / flocculation process in the removal of trace metals present in industrial wastewater. Journal of Applied Sciences and Environmental Management. 10(3). P. 159- 162.https://doi.org/10.4314/jasem.v10i3.17339
  4. Angadi, S., Shetty, R. & Manjunath, T, 2015. Coagulation Study to Remove Heavy Metals From Leachate. International Journal of Innovative Research in Science Engineering and Technology. 4 (6). P. 4095- 4099.https://doi.org/10.15680/IJIRSET.2015.0406037
  5. Azim, M. R. et al. 2011. Characteristics of Leachate Generated at Sites and Probable Risks of Surface and Ground Water Pollution in The Surrounding Areas. Bangladesh Academy of Sciences. 35(2). P. 153-160.
  6. https://doi.org/10.3329/jbas.v35i2.9418
  7. Babel, S. & Kurniawan, T., 2003. Low-cost adsorbents for heavy metals uptake from contaminated water. Journal of Hazardous Materials. 97(2003). P. 219-243.https://doi.org/10.1016/S0304-3894(02)00263-7, PMid:12573840
  8. Bakraouy, H., Souabl, S. & Digua, K., 2015. Removal of PHenol and Surfactant from Landfill Leachate by Coagulation-Flocculation Process. Scientific Study & Research. 16(4). P. 329 - 341. http://pubs.ub.ro/dwnl.pHp?id=CSCC6201504V04S01A0003
  9. Calli, B., Mertoglu, B. & Inanc, B., 2005. Landfill leachate management in Istanbul: applications and alternatives. ChemospHere. 59 (5). P. 819-829. https://doi.org/10.1016/j.chemosphere.2004.10.064.PMid:15811410
  10. Cioabla, A., 2013. Spectrophotometer. Principle and Application. Available from: http://envirobanat.ro/documents/workshop2013/WorkshopZrenanin2013- presentationCioabla.pdf
  11. Coagulation mechanism, 2003. [Online]. Available from: http://www.snf.us/wp- content/uploads/2014/08/Coagulation-Flocculation.pdf
  12. Coufort, et al. 2008. Analysis of floc size distributions in a mixing tank. Chemical Engineering and Processing. 287-294.https://doi.org/10.1016/j.cep.2007.01.009
  13. Dikshit, A., Shabiimam, A., 2011. Treatment of Landfill Leachate using Coagulation. International Conference on Environmental Science and Technology. 6. P. 119-122. http://www.ipcbee.com/vol6/no1/26-F00042.pdf
  14. Flocculation mechanism, 2003. Available from: http://www.snf.us/wp- content/uploads/2014/08/Coagulation-Flocculation.pdf
  15. GAO, Y., Song, T., 2013. Removal of Heavy Metals from Synthetic Landfill Leachate Using Oyster Shells Adsorbent. Asian Journal of Chemistry. 25(15). P. 8533-8536. https://doi.org/10.14233/ajchem.2013.14828
  16. Ghafari, S. et al., 2009. Application of response surface methodology (RSM) to optimize coagulation-flocculation treatment of leachate using poly- aluminum chloride (PAC) and alum. Journal of Hazardous Materials. 163. P. 650-656. https://doi.org/10.1016/j.jhazmat.2008.07.090
  17. Guida, et al. 2007. Optimization of alum-coagulation/flocculation for COD and TSS removal from five municipal wastewater. Desalination. https://doi.org/10.1016/j.desal.2006.02.086
  18. Heyer, K., Stegmann, R., n.d. Leachate management: leachate generation, collection, treatment and costs. Leachate management. 24(6). http://www.ifas-hamburg.de/pdf/leachate.pdf
  19. Jurczyk, L., Koc-Jurczyk, J., 2007. Efficiency of removal of heavy metals from municipal landfill leachate. Chair of Natural Theories of Agriculture University of Rzeszow. 12(4). P. 327-334.
  20. Kim, S., 2011. Chitin, Chitosan, Oligosaccharides and Their Derivatives. U.S: CRC Press.https://doi.org/10.1201/EBK1439816035
  21. Lloyd, B., 2010. The Impact of Elevated Leachate Levels on LFG Generation and Recovery at MSW Landfills in Asia. New Delhi: Organic Waste Technologies (HK) Ltd. Available from: https://www.globalmethane.org/expodocs/india10/postexpo/landfill_lloyd.pdf
  22. Matilainen, A., Vepsäläinen, M. & Sillanpaa, M, 2010. Natural organic matter removal by coagulation during drinking water treatment: A review. Advances in Colloid and Interface Science. 159(2). P. 189-197. https://doi.org/10.1016/j.cis.2010.06.007
  23. Meraz, et al. 2016. Eco-friendly innovation for nejayote coagulation- flocculation process using chitosan: Evaluation through zeta potential measurements. Chemical Engineering Journal. 284. p. 536-542.https://doi.org/10.1016/j.cej.2015.09.026
  24. Morling, S., 2007. Landfill leachate, generation, composition, and some findings from leachate treatment at Swedish plants. SWECO VIAK AB. 2. p. 172- 184.
  25. Ngah, et al. 2011. Adsorption of dyes and heavy metal ions by chitosan composites. Carbohydrate Polymers. 83 p. 1446-1456. https://doi.org/10.1016/j.carbpol.2010.11.004
  26. Olsson, et al., 2007. Copper (II) Binding to Dissolved Organic Matter Fractions in Municipal Solid Waste Incinerator Bottom Ash Leachate. Environmental Science & Technology. 41 (12). P. 4286-4291.https://doi.org/10.1021/es062954g
  27. Prakash, N., Sockan, V. & Jayakaran, P., 2008. Waste Water Treatment by Coagulation and Flocculation. International Journal of Engineering Science and Innovative Technology. 3 (2). P. 479-484.
  28. Raghab, S., Abd El Meguid, A. & Hegazi, H., 2013. Treatment of leachate from municipal solid waste landfill. Housing and Building National Research Center. 9 (2). P. 187-192. https://doi.org/10.1016/j.hbrcj.2013.05.007
  29. Rao, C., 2006. Environmental Pollution Control Engineering. 2nd edition. New Delhi: New Age International.
  30. Rui, L., Daud, Z. & Abdul Latif, A., 2012. Treatment of Leachate by Coagulation-Flocculation using different Coagulants and Polymer. Advanced Science Engineering Information Technology. 2(2). P. 2088- 5334.https://doi.org/10.18517/ijaseit.2.2.166
  31. Saleh, et al. 2014. Use of Alum for Removal of Total Dissolved Solids and Total Iron in High Rate Activated Sludge System. International Journal of Environmental Engineering Science and Technology Research. [E-journal]. 2(3). P. 1 - 12.
  32. Samadi, M. T. et al. 2010. Hamadan Landfill Leachate Treatment by Coagulation- Flocculation Process. Environmental Health Engineering. 7(3). P. 253-258.
  33. Sharma, S., 2013. Heavy Metals in Water: Presence, Removal and Safety. [Online] UK: The Royal Society of Chemistry. https://doi.org/10.1039/9781782620174
  34. Smaoui, Y. et al. 2015. Coagulation-flocculation process for landfill leachate pretreatment and optimization with response surface methodology. Desalination and Water Treatment. 57(31).https://doi.org/10.1080/19443994.2015.1067837
  35. Timur, H. & Oezturk, I., 1999. Anaerobic treatment of leachate using sequencing batch reactor and hybrid bed. Water Science Technology. 36(6-7). P. 501-508. https://doi.org/10.2166/wst.1997.0629
  36. Wang, Q. & Fu, F., 2001. Removal of heavy metal ions from wastewater. Journal of Environmental Management. 92. P. 407-418. https://doi.org/10.1016/j.jenvman.2010.11.011, PMid:21138785
  37. Yang, et al. 2011. Flocculation properties of biodegradable ampHoteric chitosan-based flocculants. Chemical Engineering Journal. 172. p. 287- 295. https://doi.org/10.1016/j.cej.2011.05.106
  38. Zemmouri, H., Drouiche, M., Sayeh, A., Lounici, H., & Mameri, N. (2012). Coagulation Flocculation Test of Keddara's Water Dam Using Chitosan and Sulfate Aluminium. Procedia Engineering, 33, 254-260. https://doi.org/10.1016/j.proeng.2012.01.1202