Effect of Gypsum on Carbon Sequestration of Organic Matter in Anaerobic Decomposition
详细信息
- 责任者：He Guangya (School of Resource and Environment ; Hefei University of Technology ; Hefei 23009 ; China) ; Chen Tianhu
- 刊名：Geological Journal of China Universities
- 出版年：2011
- 卷期：17(1)
- 关键词：石膏 ; gypsum ; 厌氧生物 ; anaerobic taxa ; 有机地球化学 ; organic geochemistry
- 页码：p.86-92
- 图表：6 illus., 1 table, 16 refs.
- 分类号：0600
- 出版序号：20120111
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
This paper investigated the affect of gypsum on methane emission and organic matter mineralization in anaerobic biochemical system by using beef extract peptone as the nutrient source. To explore the effect and mechanism of gypsum on suppressing the activity of methane-producing bacteria (MPB), three kinds of chemical and physical indexes were tested: 1) TOC, TIC, SO4 2- , sulfide and pH values of the aqueous phase; 2) volume of CO2 , CH4 and H2S emissions in the gas phase, and 3) SEM, EDS and XRD analyses of the solid phase. The results showed that addition of gypsum could effectively reduce methane emission by more than 40 %. However, no apparent impact on the release of CO2 was observed during this process. Furthermore, the content of carbonate minerals in solid phase increased dramatically compared with the control group.
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