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VGU RESEARCH REPOSITORY


Please use this identifier to cite or link to this item: https://epub.vgu.edu.vn/handle/dlibvgu/48
Title: Iron-based subsurface arsenic removal technologies by aeration: A review of the current state and future prospects
Authors: Vu T.Luong 
Edgardo E.Cañas Kurz 
Ulrich Hellriegel 
Tran Le Luu 
Jan Hoinkis 
Jochen Bundschuh 
Keywords: Subsurface arsenic removal (SAR);In-situ remediation;Arsenic adsorption;Aeration;Arsenic contamination
Issue Date: 2018
Publisher: Elsevier, Science Direct
Series/Report no.: Water Research;Vol. 133
Abstract: 
Arsenic contamination in groundwater is a critical issue and one that raises great concern around the world as the cause of many negative health impacts on the human body, including internal and external cancers. There are many ways to remove or immobilize arsenic, including membrane technologies, adsorption, sand filtration, ion exchange, and capacitive deionization. These exhibit many different advantages and disadvantages. Among these methods, in-situ subsurface arsenic immobilization by aeration and the subsequent removal of arsenic from the aqueous phase has shown to be very a promising, convenient technology with high treatment efficiency. In contrast to most of other As remediation technologies, in-situ subsurface immobilization offers the advantage of negligible waste production and hence has the potential of being a sustainable treatment option. This paper reviews the application of subsurface arsenic removal (SAR) technologies as well as current modeling approaches. Unlike subsurface iron removal (SIR), which has proven to be technically feasible in a variety of hydrogeochemical
settings for many years, SAR is not yet an established solution since it shows vulnerability to diverse geochemical conditions such as pH, Fe:As ratio, and the presence of co-ions. In some situations, this makes it difficult to comply with the stringent guideline value for drinking water recommended by the WHO (10 mg L 1
). In order to overcome its limitations, more theoretical and experimental studies are
needed to show long-term application achievements and help the development of SAR processes into state-of-the-art technology.
Index & Ranking: ISI (SCI) Q1
URI(1): http://epub.vgu.edu.vn/handle/dlibvgu/48
DOI: 10.1016/j.watres.2018.01.007
Appears in Collections:ARTICLE/BOOK PUBLICATION

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