The crop residue burning poses a threat to the environment and human health due to the emission of toxic gasses and particulate matter. This study examines the possibility of biochar production from corp residue and its utilization as a soil fertility enhancer and alternative fuel as a sustainable solution. The estimations of the total biochar production from major crop residues produced (wheat, rice, sugarcane, and maize) in India and the evaluation of its impact on CO₂ sequestration potential, nutrient sequestration, and improvement in crop yield were made with the available data. The estimations indicate that the biochars produced from crop residue could have high carbon (45–83%), nutrients (N: 0.3–3.2 g/kg%, P: 0.1–7.99 g/kg and K: 2.64–224 g/kg), cation exchange capacity (10.9–97.3cmol/kg), water holding capacity (41–561%) with high heat value (15–28 MJ/kg). On applying crop residue derived biochar in soil, the revenue can be generated through CO₂ sequestration ($0.29–3.63 million per year) and enhancement in crop productivity (0.02–0.94 million $/ha/year). The study advises that the production of biochar from crop residue could be beneficial not only for the environment but also for the farmers. Technological developments for biochar production at farmer levels are needed to discontinue the crop residue burning in India.

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生物炭生产：一种解决作物残渣燃烧和相关环境问题的可持续解决方案

由于有毒气体和颗粒物的排放，焚烧农作物残渣对环境和人类健康构成威胁。这项研究检查了从公司残留物中生产生物炭的可能性，以及将其用作土壤肥力增强剂和替代燃料作为可持续解决方案的可能性。印度主要作物残渣（小麦，水稻，甘蔗和玉米）的生物炭总产量估算及其对CO _2的影响评估可用的数据可以确定螯合潜力，养分螯合和作物产量的提高。估计表明，农作物残渣产生的生物炭可能具有高碳含量（45-83％），养分（氮：0.3-3.2 g / kg％，磷：0.1-7.99 g / kg和钾：2.64-224 g / kg ），阳离子交换容量（10.9–97.3cmol / kg），高热值（15–28 MJ / kg）的持水量（41–561％）。在土壤中施用农作物残留的生物炭后，可通过CO ₂产生收益固存（每年29-363万美元）和提高作物生产力（0.02-94万美元/公顷/年）。该研究建议，由农作物残渣生产生物炭不仅对环境有利，而且对农民也有利。需要在农民一级发展生物炭的技术发展，以中止印度的农作物残渣燃烧。