Biogas Purification Using Rice Straw and Wood Chip Biochar
DOI:
https://doi.org/10.36877/aafrj.a0000566Abstract
Non-renewable energy sources like coal, petroleum, and natural gas are depleting, and waste from biomass has become a problem dumping site for biogas production. Biogas purification, a sustainable and eco-friendly source of renewable energy, has the potential to be created through the manufacture of biogas from organic waste materials. However, biogas may be constrained by impurities, such as carbon dioxide (CO2), which can cause damage to equipment and pipelines. Biochar materials like rice straw and wood chips have been suggested as strategies to remove CO2 from biogas. This study aims to analyse the efficiency of rice straw and woodchip biochar for CO2 removal from biogas and evaluate their potential as long-term and cost-effective biogas purification. Rice straw and woodchip biochar can be used as adsorbents to purify biogas and eliminate CO2, enriched methane for various applications like energy generation, heating, and fuel. Biochar, a type of organic charcoal, selectively absorbs CO2 from the biogas stream, allowing biomethane to flow through. The porous biochar’s surface attracts and clings to CO2 molecules in the biogas, drawing them out of the gas circulation. Due to variations in molecule size and polarity, biochar is selective for CO2 over methane (CH4), resulting in a gas stream enriched in CH4. The biochar’s high porosity and surface area make it an affordable, sustainable, and green material for biogas production.
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