Divyangkumar, et al (2024) Cradle-to-gate analyses of biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More produced from agricultural crop residues by vacuum pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More. Clean Energy. https://doi.org/10.1093/ce/zkae069

Biochar, a carbon-rich material produced through pyrolysis, is gaining attention for its potential to improve soil health and mitigate climate change. A recent study evaluated the environmental and economic impacts of biochar produced from three common agricultural residues—corn cob, sugarcane bagasse, and rice husk—using a cradle-to-gate life cycle assessment (LCA). The study assessed various factors, including greenhouse gas emissions, water use, and resource consumption during biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More cultivation and biochar production.

The results showed that corn cob cultivation had the most significant environmental impact across several categories, such as global warming potential (GWP) and resource consumption. In contrast, rice husk production resulted in the highest water consumption. The use of diesel, electricity, and fertilizers heavily influenced these outcomes. Sugarcane bagasse had the least environmental impact during cultivation.

Pyrolysis itself, though environmentally intensive, offers substantial benefits when biochar is applied to soils for carbon sequestration, reducing GWP and improving soil quality. Sensitivity analysis further indicated that shifting to renewable energy sources during production could significantly reduce the environmental footprint of biochar.

From an economic standpoint, biochar production from all three residues was found to be profitable, with sugarcane bagasse offering the shortest payback period. The study emphasizes the importance of optimizing energy sources and agricultural practices to maximize biochar’s environmental and economic benefits.