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The contributions and mechanisms of iron-microbes-biochar in constructed wetlands for nitrate removal from low carbon/nitrogen ratio wastewater

文献类型：期刊论文

作者Xu, Jian1,2; Liu, Xiawei1,2; Huang, Jiaolong1,2; Huang, Manqi1,2; Wang, Tao1,2; Bao, Shaopan1; Tang, Wei1; Fang, Tao1,2
刊名RSC ADVANCES
出版日期2020-06-18
卷号10期号:39页码:23212-23220
DOI10.1039/d0ra03609a
通讯作者Fang, Tao(fangt@ihb.ac.cn)
英文摘要The removal efficiency of nitrate from low carbon/nitrogen ratio wastewater has been restricted by the lack of organics for several decades. Here, a system coupling chemical reduction, microbial denitrification and constructed wetlands (RDCWs) was developed to investigate the effect and possible mechanisms for nitrate degradation. The results showed that this coupling system could achieve a nitrate removal efficiency of 97.07 +/- 1.76%, 85.91 +/- 3.02% and 56.63 +/- 2.88% at a hydraulic retention time of 24 h, 12 h and 6 h with feeding nitrate of 15 mg L-1, respectively. These removal efficiencies of nitrate were partly caused by microbes and biochar with a contribution rate of 31.08 +/- 4.43% and 9.50 +/- 3.30%. Besides, microbes were closely related to iron and biochar for the removal of nitrate.Simplicispirawas able to utilize hydrogen produced by iron corrosion as an electron donor while nitrate accepted electrons to be reduced. Porous biochar could release dissolved organic matter, which provided a good living circumstance and carbon source for microbes. Therefore, the RDCW system is potential for large-scale application due to its low cost and simple operation.
WOS关键词BIOLOGICAL DENITRIFICATION ; CARBON SOURCE ; POLY(BUTYLENE SUCCINATE) ; SIMULTANEOUS AMMONIA ; NITROGEN REMOVAL ; SP NOV. ; REDUCTION ; ELECTROLYSIS ; PERFORMANCE ; SYSTEM
资助项目National Key R&D Program of China[2018YFD0900801] ; Natural Science Foundation of China[41907324] ; Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07603-003]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000543298000034
出版者ROYAL SOC CHEMISTRY
资助机构National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Natural Science Foundation of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment ; Major Science and Technology Program for Water Pollution Control and Treatment
源URL[http://ir.ihb.ac.cn/handle/342005/38428]  
专题水生生物研究所_水环境工程研究中心_期刊论文
通讯作者Fang, Tao
作者单位1.Chinese Acad Sci, Inst Hydrobiol, 7 Donghu South Rd, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Jian,Liu, Xiawei,Huang, Jiaolong,et al. The contributions and mechanisms of iron-microbes-biochar in constructed wetlands for nitrate removal from low carbon/nitrogen ratio wastewater[J]. RSC ADVANCES,2020,10(39):23212-23220.
APA Xu, Jian.,Liu, Xiawei.,Huang, Jiaolong.,Huang, Manqi.,Wang, Tao.,...&Fang, Tao.(2020).The contributions and mechanisms of iron-microbes-biochar in constructed wetlands for nitrate removal from low carbon/nitrogen ratio wastewater.RSC ADVANCES,10(39),23212-23220.
MLA Xu, Jian,et al."The contributions and mechanisms of iron-microbes-biochar in constructed wetlands for nitrate removal from low carbon/nitrogen ratio wastewater".RSC ADVANCES 10.39(2020):23212-23220.

入库方式： OAI收割

来源：水生生物研究所

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