有氧条件下农业化肥对沉积物砷沥滤的影响

Q1 Environmental Science Case Studies in Chemical and Environmental Engineering Pub Date : 2024-06-11 DOI:10.1016/j.cscee.2024.100794

Md Abul Hashem , Md. Aminur Rahman , Mehedi Hasan , Md Abdul Momen , Quazi Farjana Lamia , Md Sahariar Sahen , Modinatul Maoya

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引用次数: 0

摘要

本研究考察了在有氧条件下常用农家肥对沉积物中砷沥滤的影响。随着悬浮液中三聚磷酸钠（TSP）、磷酸二铵（DAP）、尿素和钾硫磷酸盐（MOP）的增加，沥滤液中的砷含量也逐渐增加。与磷酸二铵相比，三聚磷酸钠从沉积物中萃取的砷更多。农家肥的砷萃取能力依次为 TSP、DAP、尿素和 MOP。不仅是 TSP，其他农家肥也能提高砷从受污染沉积物中的沥滤能力。施用含 TSP 和 DAP 的堆肥可固定农用化肥污染沉积物中的砷沥滤。

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Effect of agricultural fertilizers on arsenic leaching from sediment under aerobic conditions

In this study, effect of commonly used agricultural fertilizers is examined on arsenic leaching from sediment under aerobic conditions. The arsenic in leachates was gradually increased with increasing triple superphosphate (TSP), diammonium phosphate (DAP), urea, and muriate of potash (MOP) in suspension. Compared to DAP; TSP leached more arsenic from the sediment. The arsenic extraction capacity of agricultural fertilizers followed TSP > DAP > urea > MOP. Not only TSP but also other agricultural fertilizers enhance leaching of arsenic from contaminated sediments. Application of compost fertilizer with TSP and DAP could immobilize arsenic leaching from contaminated sediment of agricultural fertilizers.

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