干旱区生态环境知识资源中心(Arid): Sustaining Irrigation Supplies through Immobilization of Groundwater Arsenic In Situ

Arid

DOI	10.1021/acs.est.4c03225
	Sustaining Irrigation Supplies through Immobilization of Groundwater Arsenic In Situ
	Sun, Jing; Sun, Yuqin; Prommer, Henning; Bostick, Benjamin C.; Liu, Qingsong; Ma, Meng; Li, Zengyi; Liu, Songlin; Siade, Adam J.; Li, Chao; Han, Shuangbao; Zheng, Yan
通讯作者	Zheng, Y
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN	0013-936X
EISSN	1520-5851
出版年	2024
卷号	58 期号:28 页码:12653-12663
英文摘要	Geogenic arsenic (As) in groundwater is widespread, affecting drinking water and irrigation supplies globally, with food security and safety concerns on the rise. Here, we present push-pull tests that demonstrate field-scale As immobilization through the injection of small amounts of ferrous iron (Fe) and nitrate, two readily available agricultural fertilizers. Such injections into an aquifer with As-rich (200 +/- 52 mu g/L) reducing groundwater led to the formation of a regenerable As reactive filter in situ, producing 15 m(3) of groundwater meeting the irrigation water quality standard of 50 mu g/L. Concurrently, sediment magnetic properties were markedly enhanced around the well screen, pointing to neo-formed magnetite-like minerals. A reactive transport modeling approach was used to quantitatively evaluate the experimental observations and assess potential strategies for larger-scale implementation. The modeling results demonstrate that As removal was primarily achieved by adsorption onto neo-formed minerals and that an increased adsorption site density coincides with the finer-grained textures of the target aquifer. Up-scaled model simulations with 80-fold more Fe-nitrate reactants suggest that enough As-safe water can be produced to irrigate 1000 m(2) of arid land for one season of water-intense rice cultivation at a low cost without causing undue contamination in surface soils that threatens agricultural sustainability.
英文关键词	groundwater sustainability irrigation supplies arsenic immobilization field push-pull tests reactive transport modeling
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001254788800001
WOS关键词	PERMEABLE REACTIVE BARRIERS ; IRON ; BANGLADESH ; TRANSPORT ; FIELD ; SORPTION ; FERRIHYDRITE ; MOBILIZATION ; ATTENUATION ; ADSORPTION
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS研究方向	Engineering ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403647
推荐引用方式 GB/T 7714	Sun, Jing,Sun, Yuqin,Prommer, Henning,et al. Sustaining Irrigation Supplies through Immobilization of Groundwater Arsenic In Situ[J],2024,58(28):12653-12663.
APA	Sun, Jing.,Sun, Yuqin.,Prommer, Henning.,Bostick, Benjamin C..,Liu, Qingsong.,...&Zheng, Yan.(2024).Sustaining Irrigation Supplies through Immobilization of Groundwater Arsenic In Situ.ENVIRONMENTAL SCIENCE & TECHNOLOGY,58(28),12653-12663.
MLA	Sun, Jing,et al."Sustaining Irrigation Supplies through Immobilization of Groundwater Arsenic In Situ".ENVIRONMENTAL SCIENCE & TECHNOLOGY 58.28(2024):12653-12663.