Recent advances and factors affecting the adsorption of nano/microplastics by magnetic biochar

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere Pub Date : 2025-02-01 DOI:10.1016/j.chemosphere.2024.143936

Khurram Shahzad , Areej Hasan , Syed Kumail Hussain Naqvi , Saima Parveen , Abrar Hussain , Kyong-Cheol Ko , Sang Hyun Park

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Abstract

The increase in nano/microplastics (NPs/MPs) from various everyday products entering aquatic environments highlights the urgent need to develop mitigation strategies. Biochar (BC), known for its excellent adsorption capabilities, can effectively target various harmful organic and inorganic pollutants. However, traditional methods involving powdered BC necessitate centrifugation and filtration, which can lead to the desorption of pollutants and subsequent secondary pollution. Magnetic biochar (MBC) offers a solution that facilitates straightforward and rapid separation from water through magnetic techniques. This review provides the latest insights into the progress made in MBC applications for the adsorption of NPs/MPs. This review further discusses how external factors such as pH, ionic strength, temperature, competing ions, dissolved organic matter, aging time, and particle size impact the MBC adsorption efficiency of MPs. The use of machine learning (ML) for optimizing the design and properties of BC materials is also briefly addressed. Finally, this review addresses existing challenges and future research directions aimed at improving the large-scale application of MBC for NPs/MPs removal.

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磁性生物炭吸附纳米/微塑料的研究进展及影响因素

来自各种日常产品的纳米/微塑料（NPs/MPs）进入水生环境的增加突出表明迫切需要制定缓解战略。生物炭（BC）具有优异的吸附能力，能有效吸附各种有害的有机和无机污染物。然而，涉及粉末状BC的传统方法需要离心和过滤，这可能导致污染物的解吸和随后的二次污染。磁性生物炭（MBC）提供了一种通过磁性技术直接、快速地从水中分离的解决方案。本文综述了MBC在吸附NPs/MPs方面的最新进展。本文进一步讨论了pH、离子强度、温度、竞争离子、溶解有机物、老化时间和粒径等外部因素对MPs吸附MBC效率的影响。使用机器学习（ML）优化设计和BC材料的性能也简要地解决。最后，综述了目前存在的挑战和未来的研究方向，旨在提高MBC在NPs/MPs去除中的大规模应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemosphere 环境科学-环境科学

CiteScore

15.80

自引率

8.00%

发文量

4975

审稿时长

3.4 months

期刊介绍： Chemosphere, being an international multidisciplinary journal, is dedicated to publishing original communications and review articles on chemicals in the environment. The scope covers a wide range of topics, including the identification, quantification, behavior, fate, toxicology, treatment, and remediation of chemicals in the bio-, hydro-, litho-, and atmosphere, ensuring the broad dissemination of research in this field.