海底沉积物生物气演化特征及气源影响因素分析
海底沉积物生物气演化特征及气源影响因素分析
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LIU, Yu , LI, Qing , LIN, Xiaoyun , KONG, Yun and XIAO Qilin
Publisher
Beijing: Marine Geology and Quaternary Geology
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Language
Chinese
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Beijing: Marine Geology and Quaternary Geology
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Contents
为研究海洋天然气水合物生物气源的影响因素及演化模式，选择了某海域3个海底沉积物样品进行微生物演化模拟实验。通过改变生气条件，分析不同温度、pH、碳源、碳源浓度、氮源和地层盐度对海底沉积物产甲烷菌生物气生成的影响。实验结果表明：某海域产甲烷菌在55 ℃时CH4产气量最高；pH为6～8时CH4产气量较高，且pH为10时仍有CH4产出；加入氮源、碳源都有一定程度的促进作用，但过高的碳源浓度会抑制CH4产气量；地层盐度的变化对CH4产气量影响不明显。根据不同温度微生物演化及产气率可将生物气演化分早期、高峰期和晚期3个阶段；pH为6～8、碳源选取乳糖（双糖）且浓度2.0 mL/L以及蛋白质为主要氮源时明显促进产甲烷菌产气率；按照采样点海域地温梯度及环境条件，认为采样点所在海域海底生物气源岩埋藏深度大约...
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海底沉积物生物气演化特征及气源影响因素分析
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TN_cdi_wanfang_journals_hydzydsjdz202006015
Permalink
https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_hydzydsjdz202006015
Other Identifiers
ISSN
0256-1492
DOI
10.16562/j.cnki.0256-1492.2020081303
