Removal of trimethoprim and sulfamethoxazole in artificial composite soil treatment systems and diversity of microbial communities
Removal of trimethoprim and sulfamethoxazole in artificial composite soil treatment systems and diversity of microbial communities
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DOI：
10.1007/s11783-019-1112-9
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发表时间：
2019-03
影响因子：
6.4
通讯作者：
Qinqin Liu;Miao Li;Rui Liu;Quan Zhang;Di Wu;D. Zhu;Xuhui Shen;Chuanping Feng;Fawang Zhang;Xiang Liu
中科院分区：
文献类型：
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作者：
Qinqin Liu;Miao Li;Rui Liu;Quan Zhang;Di Wu;D. Zhu;Xuhui Shen;Chuanping Feng;Fawang Zhang;Xiang Liu
构建了4个人工复合土壤处理系统(ACST)，研究了含甲氧嘧啶(TMP)和磺胺甲恶唑(SMX)的中水对SMX和TMP的生物降解效果、去除氨氮和亚硝酸盐的条件以及ACST蛋鸡体内的微生物群落。结果表明，ACSTs对SMX和TMP的去除效率分别达到80%和95%，对氨氮和亚硝酸盐的去除效率分别达到80%和90%。MiSeq测序结果表明，ACST的微生物群落结构相似。在ACST的吸附和生物降解层中的优势微生物群落包括变形杆菌、氯杆菌、酸杆菌、微生物、放线杆菌和硝化螺旋菌。在ACST生物降解层中，微生物和变形杆菌占相当大的优势。整个实验结果表明，亚硝酸单胞菌、硝酸螺旋菌和芽孢杆菌与硝化过程有关，芽孢杆菌和乳球菌与SMX和TMP的去除过程有关。研究结果表明，ACST适用于工程应用。
Four artificial composite soil treatment systems (ACSTs) fed with reclaimed water containing trimethoprim (TMP) and sulfamethoxazole (SMX) were constructed to investigate SMX and TMP biodegradation efficiency, ammonia and nitrite removal conditions and the microbial community within ACST layers. Results showed SMX and TMP removal rates could reach 80% and 95%, respectively, and removal rates of ammonia and nitrite could reach 80% and 90%, respectively, in ACSTs. The MiSeq sequencing results showed that microbial community structures of the ACSTs were similar. The dominant microbial community in the adsorption and biodegradation layers of the ACSTs containedProteobacteria, Chloroflexi, Acidobacteria, Firmicutes, ActinobacteriaandNitrospirae. Firmicutes and Proteobacteria were considerably dominant in the ACST biodegradation layers. The entire experimental results indicated that Nitrosomonadaceae_uncultured, Nitrospira and Bacillus were associated with nitrification processes, while Bacillus and Lactococcus were associated with SMX and TMP removal processes. The findings suggest that ACSTs are appropriate for engineering applications.