Impact of Pressure on Arsenic Released from Pore Water in Clayey Sediment.

ABSTRACT: Overpumping can cause arsenic to be released from the pore water in clayey aquitards into aquifers. The amount of water pumped during groundwater exploitation may change over time, leading to different soil-compaction rates or patterns. However, the impact of pressure on the release of arsenic during the compaction of a clayey aquitard is poorly understood. We performed a laboratory-compaction experiment using clayey sediment to identify the effects of compaction rates and patterns on arsenic release by analyzing the chemical characteristics and arsenic species present in pore water samples collected at different stages of the compaction experiment. A rapid (PV increased linearly) and a slow (PV increased exponentially) water-release patterns were recognized according to the compaction rat

SUBMITTER: Xiao C 

PROVIDER: S-EPMC9785127 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature