Sustaining Irrigation Supplies through Immobilization of Groundwater Arsenic In Situ

Sun, Jing1,2,3; Sun, Yuqin4,5,6; Prommer, Henning2,3; Bostick, Benjamin C.7; Liu, Qingsong8; Ma, Meng4,5,9; Li, Zengyi4,5; Liu, Songlin4,5; Siade, Adam J.2,3; Li, Chao1,10; Han, Shuangbao4,5,11; Zheng, Yan4,5

2024-06-01

10.1021/acs.est.4c03225

ENVIRONMENTAL SCIENCE & TECHNOLOGY   影响因子和分区

0013-936X

1520-5851

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.

groundwater sustainability irrigation supplies arsenic immobilization field push-pull tests reactive transport modeling

SCI ; EI

英语

通讯

National Natural Science Foundation of China["41831279","42321004","41772265"] ; Guangdong Province Bureau of Education[2020KCXTD006] ; High-Level University Special Fund[G03050K001] ; Guizhou "Hundred" High-level Innovative Talent Project[GCC(2023)038] ; U.S. Dept. of Energy[EE0009506] ; Superfund Research Program of the U.S. National Institute of Environmental Health Sciences["P42ES033719","P42ES010349"] ; National Science Foundation Signals in the Soil[2226649]

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:001254788800001

AMER CHEMICAL SOC

20242616510986

Aquifers ; Cultivation ; Food supply ; Groundwater pollution ; Groundwater resources ; Iron compounds ; Irrigation ; Nitrates ; Potable water ; Soil testing ; Sustainable development ; Textures ; Water quality

Water Resources:444 ; Groundwater:444.2 ; Water Analysis:445.2 ; Water Pollution Sources:453.1 ; Soils and Soil Mechanics:483.1 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Agricultural Methods:821.3 ; Food Products:822.3

ENVIRONMENT/ECOLOGY

Web of Science

1.Chinese Acad Sci, State Key Lab Environm Geochem, Inst Geochem, Guiyang 550081, Peoples R China
2.CSIRO Environm, Wembley, WA 6913, Australia
3.Univ Western Australia, Sch Earth Sci, Perth, WA 6009, Australia
4.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Prov Key Lab Soil & Groundwater Pollut C, Shenzhen 518055, Peoples R China
5.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen 518055, Peoples R China
6.Minist Nat Resources, Land Consolidat & Rehabil Ctr, Key Lab Land Consolidat & Rehabil, Beijing 100035, Peoples R China
7.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA
8.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Peoples R China
9.China Inst Water Resources & Hydropower Res, Dept Irrigat & Drainage, Beijing 100048, Peoples R China
10.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 101408, Peoples R China
11.China Geol Survey, Ctr Hydrogeol & Environm Geol, Baoding 071051, Peoples R China

Sun, Jing,Sun, Yuqin,Prommer, Henning,et al. Sustaining Irrigation Supplies through Immobilization of Groundwater Arsenic In Situ[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2024,58:12653-12663.

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,58,12653-12663.

Sun, Jing,et al."Sustaining Irrigation Supplies through Immobilization of Groundwater Arsenic In Situ".ENVIRONMENTAL SCIENCE & TECHNOLOGY 58(2024):12653-12663.