干旱区生态环境知识资源中心(Arid): Interactions of high-rate nitrate reduction and heavy metal mitigation in iron-carbon-based constructed wetlands for purifying contaminated groundwater

Arid

DOI	10.1016/j.watres.2019.115285
	Interactions of high-rate nitrate reduction and heavy metal mitigation in iron-carbon-based constructed wetlands for purifying contaminated groundwater
	Jia, Lixia 1; Liu, Hai 2; Kong, Qiang 3; Li, Ming 1; Wu, Shubiao 4; Wu, Haiming 1,5
通讯作者	Wu, Shubiao ; Wu, Haiming
来源期刊	WATER RESEARCH
ISSN	0043-1354
EISSN	1879-2448
出版年	2020
卷号	169
英文摘要	Groundwater, as the most important drinking water source in arid regions of China, has been polluted seriously by accumulated nitrate and heavy metals. An economic alternative with capacity of simultaneous mitigation of nitrate and heavy metals is urgently needed. This study explored the incorporation of iron scraps and biochar into constructed wetlands (CWs) for enhancing purification performance and investigated interactions of effective nitrate reduction and heavy metals mitigation. The results showed that nitrate reduction performance could reach 87% in iron and carbon-based (Fe-C) CWs through Fe-C micro-electrolysis process, with lower nitrous oxide (N2O) emission (4.6-11.75 g m(-2) h(-1)) due to the complete denitrification process. Moreover, efficient heavy metals mitigation of 75-97% total chromium (Cr) and total lead (Pb) was obtained from Fe-C systems. However, the occurrence of heavy metals (Cr and Pb) in the influent posed an adverse impact on nitrate removal with the reduction rate of 19-43%. Biochemical characteristics of wetland plants indicated that the plants also suffered from the stress which induced from heavy metals. Overall, although the addition of iron and biochar in CWs enhanced nitrate and heavy metals removal in low carbon groundwater, further investigation is still needed to reveal the complex relationships between the removal of nitrate and heavy metals in CWs. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Constructed wetlands Nitrate removal Heavy metals Groundwater Iron-carbon micro-electrolysis
类型	Article
语种	英语
国家	Peoples R China ; Denmark
收录类别	SCI-E
WOS记录号	WOS:000509632100059
WOS关键词	WASTE-WATER TREATMENT ; ZERO-VALENT IRON ; DISSOLVED ORGANIC-MATTER ; NITROUS-OXIDE EMISSION ; AUTOTROPHIC DENITRIFICATION ; MICRO-ELECTROLYSIS ; AQUEOUS-SOLUTION ; BIOLOGICAL DENITRIFICATION ; PROBABILISTIC ASSESSMENT ; ENHANCED REMOVAL
WOS类目	Engineering, Environmental ; Environmental Sciences ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
EI主题词	2020-02-01
来源机构	西北农林科技大学 ; 清华大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312687
作者单位	1.Northwest A&F Univ, Coll Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; 2.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China; 3.Shandong Normal Univ, Coll Geog & Environm, Jinan 250014, Shandong, Peoples R China; 4.Aarhus Univ, Aarhus Inst Adv Studies, DK-8000 Aarhus C, Denmark; 5.Aarhus Univ, Dept Biosci, DK-8000 Aarhus C, Denmark
推荐引用方式 GB/T 7714	Jia, Lixia,Liu, Hai,Kong, Qiang,et al. Interactions of high-rate nitrate reduction and heavy metal mitigation in iron-carbon-based constructed wetlands for purifying contaminated groundwater[J]. 西北农林科技大学, 清华大学,2020,169.
APA	Jia, Lixia,Liu, Hai,Kong, Qiang,Li, Ming,Wu, Shubiao,&Wu, Haiming.(2020).Interactions of high-rate nitrate reduction and heavy metal mitigation in iron-carbon-based constructed wetlands for purifying contaminated groundwater.WATER RESEARCH,169.
MLA	Jia, Lixia,et al."Interactions of high-rate nitrate reduction and heavy metal mitigation in iron-carbon-based constructed wetlands for purifying contaminated groundwater".WATER RESEARCH 169(2020).