Red mud-modified biochar reduces soil arsenic availability and changes bacterial composition
Red mud-modified biochar reduces soil arsenic availability and changes bacterial composition
复制标题
赤泥改性生物炭降低了土壤砷的有效性并改变了细菌组成
DOI：
10.1007/s10311-017-0688-1
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发表时间：
2018-06
影响因子：
15.7
通讯作者：
Xue Shengguo
中科院分区：
文献类型：
--
作者：
Zou Qi;An Wenhui;Wu Chuan;Li Waichin;Fu Anqin;Xiao Ruiyang;Chen Huikang;Xue Shengguo
土壤中的砷（As）污染导致地表和地下沃茨污染，降低农作物品质和产量，威胁人类健康。生物炭基材料已被提议作为污染土壤的改良剂。通过土壤培养，研究了生物炭、赤泥和赤泥改性生物炭对砷污染土壤pH、总有机碳含量、碳酸氢钠（NaHCO 3）提取态砷浓度和微生物群落组成的影响。结果表明，红泥改性的生物炭减少了27%的NaHCO 3-可提取的As的浓度，而这个浓度增加了23%，单独使用生物炭和6%，单独使用红泥。盐酸可浸提砷也观察到类似趋势。红泥和红泥改性生物炭处理增加了变形菌及其附属属的相对丰度，如Kaistastrum、Rhodanobacter和Rhodoplanes。
Worldwide arsenic (As) contamination in soils induces pollution of surface and ground waters, reduces crop quality and yield, and threatens human health. Biochar-based material has been proposed as ameliorants for contaminated soils. Here soil incubations were conducted to investigate the effects of biochar, red mud and red mud-modified biochar on the pH, total organic carbon content, sodium bicarbonate (NaHCO3)-extractable As concentration and microbial community composition of As-contaminated soils. Results show red mud-modified biochar reduces the concentration of NaHCO3-extractable As by 27%, whereas this concentration increases by 23% using biochar alone and 6% using red mud alone. Similar trends are observed for HCl-extractable As. The red mud and red mud-modified biochar treatments increased the relative abundance ofProteobacteriaand its affiliated genera, such asKaistobacter,RhodanobacterandRhodoplanes.
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