Advances in Biochar Enhancing Iron-based Materials for Organic Pollution Remediation
ZHOU Hanyu1, YOU Xueji1,*, LIU Qiang1, DAI Chaomeng2, WEN Yan1, HUANG Xiaoyi2
1 School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China 2 College of Civil Engineering, Tongji University, Shanghai 200092, China
Abstract: Accelerated by rapid industrialization and urbanization, organic pollutants have increasingly contaminated aquatic and terrestrial ecosystems. Iron-based catalysts have emerged as promising agents for pollutant degradation due to their high catalytic efficiency. Concurrently, biochar, a carbonaceous material withfavorable environmental compatibility, has attracted significant interest in remediation applications. Its distinctive physicochemical characteristics, including large specific surface area, abundant pore structure, and diverse active functional groups, facilitate synergistic interactions with iron species. This paper systematically examines the mechanistic synergies between biochar and iron-based materials in both advanced oxidation processes (AOPs) and natural attenuation of pollutants, emphasizing the role of biochar’s structural and chemical properties in enhancing catalytic performance. Additionally, we assess the feasibility of this integrated approach for field-scale remediation and identify key knowledge gaps to guide future research. By organizing and reviewing current literature, this work provides a theoretical basis for optimizing biochar-iron systems in organic pollutant mitigation and underscores their potential for sustainable environmental applications.
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2026, Vol. 40 
