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Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province
Jiang, Lei1; Xu, Hengchao1; Qiao, Haijun2
2017-02-01
Source PublicationACTA GEOLOGICA SINICA-ENGLISH EDITION
Volume91Issue:1Pages:145-155
AbstractA slightly acidic hot spring named Female Tower (t=73.5 degrees C, pH=6.64) is located in the Jifei Geothermal Field, Yunnan Province, southwestern China. The precipitates in the hot spring are composed of large amounts of calcite, aragonite and sulfur. Scanning electron microscopy (SEM) analyses reveal that the microbial mats were formed from various coccoid or rod-shaped filamentous microbes. Transmission electron microscopy (TEM) shows that the intracellular sulfur granules are commonly associated with these microbes. A culture-independent molecular phylogenetic analysis demonstrates that the majority of the bacteria in the spring are sulfur-oxidizing bacteria. In the spring water, H2S concentration is up to 60 ppm, while SO(4)(2-)concentration is only about 10 ppm. We speculate that H2S might derive from sulfur-oxidizing bacteria in this hot spring water, leading to the intracellular formation of sulfur granules. Meanwhile, this reaction increased the pH in the micron-scale microdomains, which fosters the precipitation of calcium carbonate in the microbial mats. The results of this study indicate that the sulfur-oxidizing bacteria might play an important role in calcium carbonate precipitation in slightly acidic hot spring environments.
SubtypeArticle
KeywordBio-mediated Calcium Carbonate Slightly Acidic Hot Spring Yunnan Province
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1111/1755-6724.13068
Indexed BySCI
Language英语
WOS KeywordYELLOWSTONE-NATIONAL-PARK ; REHAI GEOTHERMAL-FIELD ; SOUTHWESTERN CHINA ; MICROBIAL MATS ; SP-NOV. ; BIOFILMS ; CACO3 ; SULFURIHYDROGENIBIUM ; CRYSTALLIZATION ; MINERALIZATION
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000395768100010
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/1827
Collection深海科学研究部_深海极端环境模拟研究实验室
Affiliation1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Hainan, Peoples R China
2.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China
First Author AffilicationInstitute of Deep-sea Science and Engineering,CAS
Recommended Citation
GB/T 7714
Jiang, Lei,Xu, Hengchao,Qiao, Haijun. Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2017,91(1):145-155.
APA Jiang, Lei,Xu, Hengchao,&Qiao, Haijun.(2017).Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province.ACTA GEOLOGICA SINICA-ENGLISH EDITION,91(1),145-155.
MLA Jiang, Lei,et al."Biomediated Precipitation of Calcium Carbonate in a Slightly Acidic Hot Spring, Yunnan Province".ACTA GEOLOGICA SINICA-ENGLISH EDITION 91.1(2017):145-155.
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