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By: Bangal Akhil, Amaan Panwar, and Rani Khengare
Student, Department of Civil Engineering, Parvatabai Genba Moze Collage of Engineering, Wagholi, Pune, Maharashtra, India.
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
Citation:
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