Geothermal arsenic in Taiwan: geochemistry and microbial diversity

Maity, J. P. and Chen, C.-Y. and Nath, B. and Bundschuh, J. and Bhattacharya, P. (2012) Geothermal arsenic in Taiwan: geochemistry and microbial diversity. In: 4th International Congress on Arsenic in the Environment: Understanding the Geological and Medical Interface of Arsenic (AS 2012), 22-27 July 2012, Cairns, Australia.

Abstract

This study describes the fluid chemical compositions and related microbial diversity in geothermal systems of Taiwan. The fluid samples were collected from several geothermal springs located in northern and southern Taiwan. The pH values of the fluids showed diverse character of the geothermal systems, some are acidic in nature while few showed alkaline in nature. The fluids also contain high arsenic concentrations with As(III) as the dominant species. Yang-Ming-Shan and Beitou hot springs in northern Taiwan were characterized by sulfur spring type (contains H-SO 4). The 16S rRNA gene sequence of microbial community indicated the presence of thiosulfate-oxidizing, alkaliphilic, psychrotolerant and chemo-organoheterotrophy bacterium such as Limnobacter thiooxidans, Clostridium sulfidigenes and Des-ulfovibrio psychrotolerans, respectively.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
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Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 12 Sep 2014 06:25
Last Modified: 02 Feb 2017 06:25
Uncontrolled Keywords: arsenic; geothermal fields; hot springs; sulfur; Southern Taiwan
Fields of Research : 05 Environmental Sciences > 0502 Environmental Science and Management > 050204 Environmental Impact Assessment
04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040603 Hydrogeology
URI: http://eprints.usq.edu.au/id/eprint/25964

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