Abstract

Leachate, a hazardous liquid from landfill decomposition, is a significant environmental challenge worldwide. Traditional collection of solid waste: Gather the solid waste material you want to generate leachate from. This waste could include organic matter, plastics, paper, and other materials commonly found in municipal solid waste. Sorting and compressing: Depending on the initial state of the waste, you may need to shred or crush it to increase the surface area available for leaching. This step helps to expedite the leaching process. Placement in a leaching chamber or tank: Place the shredded waste material in a container specifically designed for leaching. This could be a leaching chamber, tank, or any other suitable vessel. The container should be equipped with a drainage system at the bottom to collect any leachate. However, certain methods often involve complex and expensive processes, making them unsustainable over time. Biochar, a carbon-rich material derived from biomass pyrolysis, has gained interest as a sustainable and cost-effective solution for leachate treatment. This paper reviews the current research on biochar’s application in treating leachate, exploring its mechanisms for adsorption and filtration. Factors influencing biochar’s efficiency include feedstock type, pyrolysis conditions, surface functional groups, and pH. The paper also addresses potential challenges and limitations, such as scale-up, regeneration, and disposal of spent biochar. Despite these, biochar shows promise as a sustainable solution for leachate treatment, offering advantages like low cost, abundant raw materials, and carbon sequestration potential. Future research should focus on optimizing biochar-based systems, improving understanding of mechanisms, and developing innovative large-scale implementation approaches. Biochar’s versatility and eco-friendliness makes it a promising avenue for addressing environmental pollution and promoting sustainability in waste management practices.

Keywords: Environmental impact, solid waste, contamination, heavy metals, organic pollutants, nutrient compounds, water quality, soil contamination, traditional treatment methods, chemical coagulation, advanced oxidation processes, membrane filtration, biochar, pyrolysis, adsorption

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1. Nawaz T, Rahman A, Pan S, Dixon K, Petri B, Selvaratnam T. A review of landfill leachate treatment by microalgae: current status and future directions. Processes. 2020;8(4):384. doi:10.3390/pr8040384
2. Iqbal J, Javed A, Baig MA. Growth and nutrient removal efficiency of duckweed from synthetic and dumpsite leachate under artificial and natural conditions. Bioresour Technol. 2019;10:211–20. (Additional verification needed for precise issue details).
3. Mukherjee S, Mukhopadhyay S, Hashim MA, Gupta BS. Environmental issues of landfill leachate. Environmental Chemistry Letters. 2014;12:185–209. doi:10.1007/s10311-014-0456-9.
4. Zhang Z, Wu Y, Luo L, Li G, Li Y, Hu H. Application of disk tube reverse osmosis in wastewater treatment. Desalination. 2012;300:20–30. doi:10.1016/j.desal.2012.06.023.
5. Haslina H, NorRuwaida J, Dewika M, Rashid M, Ali AH, Khairunnisa MP, et al. Landfill leachate treatment methods and its potential for ammonia removal and recovery. IOP Conf Ser Earth Environ Sci. 2020;476(1):012006. doi:10.1088/1755-1315/476/1/012006.
6. Raghab SM, Abd El-Meguid AM, Hegazi HA. Treatment of leachate from municipal solid waste landfill. HBRC Journal. 2013;9(2):187–92. doi:10.1016/j.hbrcj.2013.05.007.
7. Ramprasad C, Sona K, Afridhi M, Kumar R, Gopalakrishnan N. Comparative study on the treatment of landfill leachate by coagulation and electrocoagulation processes. Environmental Science and Pollution Research. 2019;26:26837–48. doi:10.1007/s11356-019-05959-6.
8. Hermosilla D, Cortijo M, Huang CP. Optimizing the treatment of landfill leachate by conventional Fenton and photo-Fenton processes. Science of The Total Environment. 2009;407(11):3473–81. doi:10.1016/j.scitotenv.2009.01.032.
9. Evaluation of landfill leachate pollution and treatment. (Conference Proceedings: April 22–25, 2007). Additional details pending retrieval.
10. Chu LM, Cheung KC, Wong MH. Effects of landfill leachate application on crop growth variations in the chemical properties of landfill leachate. Environmental Pollution. 1994;87(1):73–9. doi:10.1016/0269-7491(94)90008-6.

Abstract

Leachate, a hazardous liquid from landfill decomposition, is a significant environmental challenge worldwide. Traditional collection of solid waste: Gather the solid waste material you want to generate leachate from. This waste could include organic matter, plastics, paper, and other materials commonly found in municipal solid waste. Sorting and compressing: Depending on the initial state of the waste, you may need to shred or crush it to increase the surface area available for leaching. This step helps to expedite the leaching process. Placement in a leaching chamber or tank: Place the shredded waste material in a container specifically designed for leaching. This could be a leaching chamber, tank, or any other suitable vessel. The container should be equipped with a drainage system at the bottom to collect any leachate. However, certain methods often involve complex and expensive processes, making them unsustainable over time. Biochar, a carbon-rich material derived from biomass pyrolysis, has gained interest as a sustainable and cost-effective solution for leachate treatment. This paper reviews the current research on biochar’s application in treating leachate, exploring its mechanisms for adsorption and filtration. Factors influencing biochar’s efficiency include feedstock type, pyrolysis conditions, surface functional groups, and pH. The paper also addresses potential challenges and limitations, such as scale-up, regeneration, and disposal of spent biochar. Despite these, biochar shows promise as a sustainable solution for leachate treatment, offering advantages like low cost, abundant raw materials, and carbon sequestration potential. Future research should focus on optimizing biochar-based systems, improving understanding of mechanisms, and developing innovative large-scale implementation approaches. Biochar’s versatility and eco-friendliness makes it a promising avenue for addressing environmental pollution and promoting sustainability in waste management practices.

Keywords: Environmental impact, solid waste, contamination, heavy metals, organic pollutants, nutrient compounds, water quality, soil contamination, traditional treatment methods, chemical coagulation, advanced oxidation processes, membrane filtration, biochar, pyrolysis, adsorption

🔒 This is a subscription article

Full text is available to subscribers and institutional members. Please choose an option below to access it.

1. Nawaz T, Rahman A, Pan S, Dixon K, Petri B, Selvaratnam T. A review of landfill leachate treatment by microalgae: current status and future directions. Processes. 2020;8(4):384. doi:10.3390/pr8040384
2. Iqbal J, Javed A, Baig MA. Growth and nutrient removal efficiency of duckweed from synthetic and dumpsite leachate under artificial and natural conditions. Bioresour Technol. 2019;10:211–20. (Additional verification needed for precise issue details).
3. Mukherjee S, Mukhopadhyay S, Hashim MA, Gupta BS. Environmental issues of landfill leachate. Environmental Chemistry Letters. 2014;12:185–209. doi:10.1007/s10311-014-0456-9.
4. Zhang Z, Wu Y, Luo L, Li G, Li Y, Hu H. Application of disk tube reverse osmosis in wastewater treatment. Desalination. 2012;300:20–30. doi:10.1016/j.desal.2012.06.023.
5. Haslina H, NorRuwaida J, Dewika M, Rashid M, Ali AH, Khairunnisa MP, et al. Landfill leachate treatment methods and its potential for ammonia removal and recovery. IOP Conf Ser Earth Environ Sci. 2020;476(1):012006. doi:10.1088/1755-1315/476/1/012006.
6. Raghab SM, Abd El-Meguid AM, Hegazi HA. Treatment of leachate from municipal solid waste landfill. HBRC Journal. 2013;9(2):187–92. doi:10.1016/j.hbrcj.2013.05.007.
7. Ramprasad C, Sona K, Afridhi M, Kumar R, Gopalakrishnan N. Comparative study on the treatment of landfill leachate by coagulation and electrocoagulation processes. Environmental Science and Pollution Research. 2019;26:26837–48. doi:10.1007/s11356-019-05959-6.
8. Hermosilla D, Cortijo M, Huang CP. Optimizing the treatment of landfill leachate by conventional Fenton and photo-Fenton processes. Science of The Total Environment. 2009;407(11):3473–81. doi:10.1016/j.scitotenv.2009.01.032.
9. Evaluation of landfill leachate pollution and treatment. (Conference Proceedings: April 22–25, 2007). Additional details pending retrieval.
10. Chu LM, Cheung KC, Wong MH. Effects of landfill leachate application on crop growth variations in the chemical properties of landfill leachate. Environmental Pollution. 1994;87(1):73–9. doi:10.1016/0269-7491(94)90008-6.