Biochar increases arsenic release from an anaerobic paddy soil due to enhanced microbial reduction of iron and arsenic

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• 作者：Ning Wang^a ; Xi-Mei Xue^b ; Albert L. Juhasz^c ; Zhi-Zhou Chang^a ; ; Hong-Bo Li^d ; ^{hongboli@nju.edu.cn}
• 关键词：Biochar ; Arsenic release ; Paddy soil ; Arsenic functional gene ; Fe-reducing bacteria
• 刊名：Environmental Pollution
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：220
• 期：part_PA
• 页码：514-522
• 全文大小：1405 K
• 卷排序：220

文摘

Biochar was applied to an As-contaminated paddy soil to test its influence on As release under anaerobic condition. Biochar enhanced As and ferrous Fe concentrations in soil solution, decreased soil As in amorphous Fe/Al oxide fraction. Increased As release strongly correlated with increased ferrous Fe and decreased As in soil amorphous Fe/Al oxide fraction. Relative abundance of Fe reducing bacteria and As reducing functional genes increased with biochar amendment.