Biochar for soil remediation: A comprehensive review of current research on pollutant removal

• Published in: Environmental pollution (1987) Vol. 337; p. 122571
• Main Authors: Nguyen, Thanh-Binh, Sherpa, Kamakshi, Bui, Xuan-Thanh, Nguyen, Van-Truc, Vo, Thi-Dieu-Hien, Ho, Hien-Thi-Thanh, Chen, Chiu-Wen, Dong, Cheng-Di
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15.11.2023
• Subjects: Biochar; Carbon sequestration; Heavy metal; Persistent organic pollutant; Soil remediation; Persistent organic pollutant; Soil remediation; Biochar; Carbon sequestration; Heavy metal
• ISSN: 0269-7491; 1873-6424
• DOI: 10.1016/j.envpol.2023.122571

Biochar usage in soil remediation has turned out to be an enticing topic recently. Biochar, a product formed by pyrolysis of organic waste, which is rich in carbon, has the aptitude to ameliorate climate change by sequestering carbon while also enhancing soil quality and crop yields. Two-edged implications of biochar on soil amendment are still being discussed yet, clarity on the long-term implications of biochar on soil health and the environment is not yet achieved. As a result, it is crucial to systematically uncover the pertinent information regarding biochar remediation, as this can serve as a roadmap for future research on using biochar to remediate contaminated soils in mining regions. This review endeavors to bring forth run thoroughly the latest state of research on the use of biochar in soil remediation, along with its potential benefits, limitations, challenges, and future scope. By synthesizing existing literature on biochar soil remediation, this review aims to provide insights into the potential of biochar as a sustainable solution for soil remediation. Specifically, this review will highlight the key factors that influence the effectiveness of biochar for soil remediation and the potential risks associated with its use, as well as the current gaps in knowledge and future research directions. [Display omitted] •Biochar has a positive impact on soil remediation and carbon sequestration.•Biochar effectively remediate both organic and inorganic pollutants in soil.•Biochar efficacy in soil remediation depends on its properties and soil type.•Biochar for remediation is promising but requires case-specific risk evaluation.