Modeling acid-gas generation from boiling chloride brines |
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| Authors: | Guoxiang Zhang Nicolas Spycher Eric Sonnenthal Carl Steefel |
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| Institution: | (1) Earth Sciences Division at Lawrence Berkeley National Laboratory, MS 90-1116, 1 Cyclotron Road, Berkeley, CA 94720, USA |
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| Abstract: | Background This study investigates the generation of HCl and other acid gases from boiling calcium chloride dominated waters at atmospheric
pressure, primarily using numerical modeling. The main focus of this investigation relates to the long-term geologic disposal
of nuclear waste at Yucca Mountain, Nevada, where pore waters around waste-emplacement tunnels are expected to undergo boiling
and evaporative concentration as a result of the heat released by spent nuclear fuel. Processes that are modeled include boiling
of highly concentrated solutions, gas transport, and gas condensation accompanied by the dissociation of acid gases, causing
low-pH condensate. |
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