ORCID Identifiers

0000-0002-8402-2826

Document Type

Article

Source of Publication

International Journal of Greenhouse Gas Control

Publication Date

7-29-2015

Abstract

© 2014 The Authors. Published by Elsevier Ltd. A possible effect of a carbon dioxide leak from an industrial sub-sea floor storage facility, utilised for Carbon Capture and Storage, is that escaping carbon dioxide gas will dissolve in sediment pore waters and reduce their pH. To quantify the scale and duration of such an impact, a novel, field scale experiment was conducted, whereby carbon dioxide gas was injected into unconsolidated sub-sea floor sediments for a sustained period of 37 days. During this time pore water pH in shallow sediment (5 mm depth) above the leak dropped >0.8 unit, relative to a reference zone that was unaffected by the carbon dioxide. After the gas release was stopped, the pore water pH returned to normal background values within a three-week recovery period. Further, the total mass of carbon dioxide dissolved within the sediment pore fluids above the release zone was modelled by the difference in DIC between the reference and release zones. Results showed that between 14 and 63% of the carbon dioxide released during the experiment could remain in the dissolved phase within the sediment pore water.

ISSN

1878-0148

Publisher

Elsevier Ltd

Volume

38

First Page

93

Last Page

101

Disciplines

Life Sciences

Keywords

Carbon capture and storage, CO 2, pH, Sediment pore water

Scopus ID

84937842126

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Indexed in Scopus

yes

Open Access

yes

Open Access Type

Hybrid: This publication is openly available in a subscription-based journal/series

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Life Sciences Commons

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