铁改性生物炭捕集水体磷机制及农田资源化回用进展

张峻霄; 夏桂敏; 刘啸威; 吴 奇; 迟道才

引用本文:	张峻霄,夏桂敏,刘啸威,等.铁改性生物炭捕集水体磷机制及农田资源化回用进展[J].灌溉排水学报,2024,43(2):106-112.
	ZHANG Junxiao,XIA Guimin,LIU Xiaowei,,et al.铁改性生物炭捕集水体磷机制及农田资源化回用进展[J].灌溉排水学报,2024,43(2):106-112.

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铁改性生物炭捕集水体磷机制及农田资源化回用进展
张峻霄，夏桂敏，刘啸威，吴奇，迟道才
沈阳农业大学水利学院，沈阳 110161

摘要:

利用铁改性生物炭从富营养化水体中捕集磷，将其回用于农田，是高效利用生物质、促进磷资源高效利用的有效途径之一。然而，铁改性生物炭对磷的吸附效率受制备方式和水环境的影响极大。为促进富营养化水体磷的捕集效率和再利用，本文总结了国内外铁改性生物炭（Fe-B）的制备方法及其对水体中磷酸盐的吸附性能，阐述了Fe-B对磷的吸附机制，分析了pH值、共存离子、生物炭用量和温度对Fe-B吸附磷酸盐性能的影响，分析了富营养化水体中磷的农田资源化再利用潜力。本研究结果可为富营养化水体磷捕集与资源化再利用提供理论参考。

关键词: 铁改性生物炭；富营养化水体；磷；吸附；农田

DOI：10.13522/j.cnki.ggps.2023328

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Using iron-modified biochar to adsorb phosphorus from eutrophic water and reusing it as a phosphorus fertilizer: A review

ZHANG Junxiao, XIA Guimin, LIU Xiaowei, WU Qi, CHI Daocai

College of Water Resource, Shenyang Agricultural University, Shenyang 110161, China

Abstract:

Using Fe-modified biochar (Fe-B) to capture phosphorus in eutrophic water and then reusing it as a phosphorus fertilizer for agricultural production is a sustainable way to remediate surface water eutrophication and develop agriculture. However, the adsorption efficiency of Fe-modified biochar is influenced by a variety of factors including methods to produce biochar and surface water environment. In this review, we analyze different methods to manufacture Fe-B and their efficacy for phosphate adsorption. Other factors we analyzed include pH value, coexisting ions, biochar application rate, temperature which have shown to affect the capacity of Fe-B to adsorb phosphorus. We also discuss the potential of Fe-B and the phosphorus it adsorbed to be reused as a slow-release phosphorus fertilizer for agricultural production, as well as the perspective of Fe -modified biochar (Fe-B) and its applications.

Key words: Fe-modified biochar; eutrophic water; phosphorus; adsorption; farmland