Effects of biochar-based materials on the bioavailability of soil organic pollutants and their biological impacts.

Qing Lin, Xiaofei Tan, Eydhah Almatrafi, Yang Yang, Wenjun Wang, Hanzhuo Luo, Fanzhi Qin, Chengyun Zhou, Guangming Zeng, Chen Zhang

The Science of the total environment 2022 Jun 20

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Motivated by the unique structure and superior properties, biochar-based materials, including pristine biochar and composites of biochar with other functional materials, are considered as new generation materials for diverse multi-functional applications, which may be intentionally or unintentionally released to soil. The influencing mechanism of biochar-based material on soil organisms is a key aspect for quantifying and predicting its benefits and trade-offs. This work focuses on the effects of biochar-based materials on soil organisms within the past ten years. 206 sources are reviewed and available knowledge on biochar-based materials' impacts on soil organisms is summarized from a diverse perspective, including the pollutant bioavailability changes in soil, and potential effects of biochar-based materials on soil organisms. Herein, effects of biochar-based materials on the bioavailability of soil organic pollutants are detailed, from the perspective of plant, microorganism, and soil fauna. Potential biological effects of pristine biochar (PBC), metal/metal compounds-biochar composites (MBC), clay minerals-biochar composites (CMBC), and carbonaceous materials-biochar composites (CBC) on soil organisms are highlighted for the first time. And possible mechanisms are presented based on the different characters of biochar-based materials as well as various environmental interactions. Finally, the bottleneck and challenges of risk assessment of biochar-based materials as well as future prospects are proposed. This work not only promotes the development of risk assessment system of biochar-based materials, but broadens the strategy for the design and optimization of environmental-friendly biochar materials. Copyright © 2022 Elsevier B.V. All rights reserved.

Citation

Qing Lin, Xiaofei Tan, Eydhah Almatrafi, Yang Yang, Wenjun Wang, Hanzhuo Luo, Fanzhi Qin, Chengyun Zhou, Guangming Zeng, Chen Zhang. Effects of biochar-based materials on the bioavailability of soil organic pollutants and their biological impacts. The Science of the total environment. 2022 Jun 20;826:153956