文献类型：期刊文献

英文题名：Novel Chitosan-FeS@biochar-added constructed wetland microcosms for NH4+/NO3- and Pb removal: Performance and mechanism

作者：Wang, Hai[1];Liu, Renrong[1];Chen, Qian[1];Xia, Haixin[1];Zhang, Yaohong[1]

机构：[1]Shaoxing Univ, Sch Life Sci, Sch Chem & Chem Engn, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Zhejiang, Peoples R China

年份：2023

卷号：11

期号：5

外文期刊名：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001039331400001)、、WOS

基金：This research was supported by the Joint Funds of the Zhejiang Provincial Natural Science Foundation of China under Grant No. LZY21C030001, National Natural Science Foundation of China under Grant No. 31500321 and Open Funds of Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process (jxhxpctgytdjs2305) .

语种：英文

外文关键词：Constructed wetland; CFP composite; Nitrification and denitrification; TN removal; Pb2+ removal; Microbial community

外文摘要：Biochar has been proven to be efficient for enhancing purifying performance, however, studies on nitrogen (N) removal pathways and microbial community structure is far insufficient in modified-biochar-added constructed wetlands (CWs) for treating N and heavy metals co-existing wastewater. Therefore, the composite of Chitosan-FeS @ peanut shell biochar (CFP) was applied in CWs to assess its performance for treating N and Pb co-existing wastewater and investigate N removal pathways. It showed that adding CFP enhanced the nitrifica-tion and denitrification intensity and increased removal rates of NO3-, NH4+ and TN by 76.32%, 28.41% and 52.48% respectively, in CWs. CFP not only functioned as electron donor to drive denitrification but also increased the relative abundance of Thiobacillus, Sulfurimonas and Geobacter, thereby promoting N removal. Furthermore, CFP alleviated Pb stress on Acorus calamus L.Therefore, this study provides a promising and feasible strategy for treating N and Pb co-existing wastewater in CWs.