Institute of Chemical Technology, Vietnam Academy of Science and Technology, No.1A, TL29 Str., Thanh Loc Ward, Dist. 12, Ho Chi Minh City, Viet Nam.
School of Engineering, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom.
Chemosphere. 2022 Nov;307(Pt 3):135834. doi: 10.1016/j.chemosphere.2022.135834. Epub 2022 Aug 10.
Each year, Asia produces an estimated 350 million tonnes of agricultural residues. According to Ministry of Power projections, numerous tonnes of such waste are discarded each year, in addition to being used as green manure. The methodology used to convert agricultural waste into the most valuable biochar, as well as its critical physical and chemical properties, were described in this review. This review also investigates the beneficial effects of bio and phytoremediation on metal(lloid)-contaminated soil. Agriculture biomass-based biochar is an intriguing organic residue material with the potential to be used as a responsible solution for metal(lloid) polluted soil remediation and soil improvement. Plants with faster growth and higher biomass can meet massive remediation demands. Recent research shows significant progress in agricultural biomass-based biomass conversion as biochar, as well as understanding the frameworks of metal(lloid) accumulation and mobility in plants used for metal(lloid) polluted soil remediation. Biochar made from various agricultural biomass can promote native plant growth and improve phytoremediation efficiency in polluted soil with metal(lloid)s. This carbon-enriched biochar promotes native microbial activity by neutralising pH and providing adequate nutrition. Thus, this review critically examines the feasibility of converting agricultural waste biomass into biochar, as well as the impact on plant and microbe remediation potential in metal(lloid)s polluted soil.
每年，亚洲产生的农业残留物估计有 3.5 亿吨。根据印度电力部的预测，除了被用作绿肥外，每年还会丢弃数不清的此类废物。本综述描述了将农业废物转化为最有价值的生物炭的方法以及其关键的物理和化学特性。本综述还研究了生物和植物修复对金属（类）污染土壤的有益影响。基于农业生物质的生物炭是一种有趣的有机残余物材料，有可能成为一种负责任的解决方案，用于修复金属（类）污染土壤和改善土壤。生长速度更快、生物量更高的植物可以满足大规模修复的需求。最近的研究表明，在农业生物质基生物炭作为生物炭的转化方面取得了重大进展，并理解了用于金属（类）污染土壤修复的植物中金属（类）积累和迁移的框架。各种农业生物质制成的生物炭可以促进本地植物的生长，并提高受金属（类）污染土壤的植物修复效率。这种富含碳的生物炭通过中和 pH 值并提供充足的营养来促进本地微生物的活性。因此，本综述批判性地研究了将农业废物生物质转化为生物炭的可行性，以及对受金属（类）污染土壤中植物和微生物修复潜力的影响。
