Investigation of arsenic contamination from geothermal water in different geological settings of Taiwan: Hydrogeochemical and microbial signatures
2016 (English)In: Arsenic Research and Global Sustainability - Proceedings of the 6th International Congress on Arsenic in the Environment, AS 2016, CRC Press/Balkema , 2016, p. 84-85Conference paper, Published paper (Refereed)
Abstract [en]
The dissemination of dissolved elements, including arsenic (As(V)/As(III)) and microbial diversity was studied in hydrothermal systems of Taiwan considering three different principal geological settings such as Igneous rock terrains, Metamorphic terrains and Sedimentary terrains to understand the cycling, fate and transport and potential impact of As on hydrological systems. The results were indicated as strongly acidic (pH< 3), sulfate-enriched waters of H-SO4-type in igneous-sedimentary rock terrains, slightly alkaline waters (pH: 8–8.95) in metamorphic terrains, and circum-neutral waters (pH 6.47–7.41) of Na-HCO3/Na-Cl-HCO3-type in metamorphic-sedimentary terrains. The geothermal waters were enriched with As in igneous terrains (Beitou: 1.46 mg/L) as compared to sedimentary (0.16 ± 0.14 mg/L) or metamorphic (0.06 ± 0.02 mg/L) terrains. The 16S rRNA gene sequence of bacterial diversity indicates prevalence of mesophilic sulfur- and thiosulfate-oxidizing bacterium in Taipu (igneous rock terrains). The discharge from geothermal springs with significant levels of As and other toxic element contaminate the surface and groundwater of environment.
Place, publisher, year, edition, pages
CRC Press/Balkema , 2016. p. 84-85
Keywords [en]
Alkalinity, Arsenic, Geology, Geothermal springs, Groundwater, Groundwater pollution, Metamorphic rocks, RNA, Sedimentary rocks, Sedimentology, Sustainable development, 16S rRNA gene sequence, Arsenic contamination, Bacterial diversity, Fate and transport, Hydrological system, Hydrothermal system, Metamorphic terrains, Microbial diversity, Igneous rocks
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:kth:diva-207543DOI: 10.1201/b20466-41Scopus ID: 2-s2.0-85017016926ISBN: 9781138029415 (print)OAI: oai:DiVA.org:kth-207543DiVA, id: diva2:1103801
Conference
6th International Congress on Arsenic in the Environment, AS 2016, 19 June 2016 through 23 June 2016
Note
Conference code: 175559; Export Date: 22 May 2017; Conference Paper; Funding details: NSC, National Science Council; Funding text: We would like to thank NSC, Taiwan. QC 20170531
2017-05-312017-05-312022-06-27Bibliographically approved