Reactive Transport Modeling of Arsenic Mobilization in Groundwater of the Red River Floodplain, Vietnam

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• 作者：Dieke Postma^a ; ^{diekepostma@gmail.com} ; Pham Thi Kim Trang^b ; Helle Ugilt Sø ; ^a ; Vi Mai Lan^b ; Rasmus Jakobsen^a
• 关键词：geochemistry ; groundwater ; arsenic ; Red River ; Vietnam ; reactive transport ; modeling
• 刊名：Procedia Earth and Planetary Science
• 出版年：2017
• 出版时间：2017
• 年：2017
• 卷：17
• 期：Complete
• 页码：85-87
• 全文大小：115 K
• 卷排序：17

文摘

The arsenic content in groundwater of the Red River floodplain decreases with the burial age of the aquifer sediment over a 6000 year period. This decrease is caused by diminishing reactivities of both sedimentary organic carbon, Fe-oxides as well as CaCO3. Here we present a 1-D reactive transport model developed in PHREEQC-3 that quantifies the resulting changes in groundwater bulk chemistry as well as arsenic content over the last six millennia.