Multifunctional applications of biochar beyond carbon storage

Bolan, Nanthi and Hoang, Son A. and Beiyuan, Jingzi and Gupta, Souradeep and Hou, Deyi and Karakoti, Ajay and Joseph, Stephen and Jung, Sungyup and Kim, Ki-Hyun and Kirkham, M.B. and Kua, Harn Wei and Kumar, Manish and Kwon, Eilhann E. and Ok, Yong Sik and Perera, Vishma and Rinklebe, Jörg and Shaheen, Sabry M. and Sarkar, Binoy and Sarmah, Ajit K. and Singh, Bhupinder Pal and Singh, Gurwinder and Tsang, Daniel C. W. and Vikrant, Kumar and Vithanage, Meththika and Vinu, Ajayan and Wang, Hailong and Wijesekara, Hasintha and Yan, Yubo and Younis, Sherif A. and Van Zwieten, Lukas (2022) Multifunctional applications of biochar beyond carbon storage. INTERNATIONAL MATERIALS REVIEWS, 67 (2). pp. 150-200. ISSN 0950-6608

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Biochar is produced as a charred material with high surface area and abundant functional groups by pyrolysis, which refers to the process of thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen. The carbon component in biochar is relatively stable, and, hence, biochar was originally proposed as a soil amendment to store carbon in the soil. Biochar has multifunctional values that include the use of it for the following purposes: soil amendment to improve soil health, nutrient and microbial carrier, immobilising agent for remediation of toxic metals and organic contaminants in soil and water, catalyst for industrial applications, porous material for mitigating greenhouse gas emissions and odorous compounds, and feed supplement to improve animal health and nutrient intake efficiency and, thus, productivity. This article provides for the first time an overview of the multifunctional values and unintended consequences of biochar applications.

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16 Jan 2023 15:25
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16 Jan 2023 15:25