生物甲烷产出过程中的气体组分变化
Gas component changes in biological methane gas output process
为明确生物甲烷产出的机理，本文在实验室条件下模拟生物甲烷产出过程，对反应产出气体的成分及浓度进行检测，同时对反应液的pH进行监测。实验结果表明：反应过程中，甲烷浓度最高可达64.74 %；pH值从初始值7.13开始，先降至6.58，而后逐渐升高至最高值8.5，并稳定至反应结束；甲烷产出率在反应12天后，持续4天稳定在19 ml/g，而后在反应进行到21天的时候，陡然升至40.65 ml/g。根据气体产出率及浓度可初步判定，生物甲烷产出过程存在两个产气高峰期。其中，第一产气阶段以二氧化碳的产出为主，第二产气阶段中，甲烷的浓度及产率达到最大。
Based on the laboratory conditions, we make a modeling of biological methane output process to determine the mechanism of the biological methane output. With testing the component and concentration of output gases, as well as monitoring the pH value of the reaction liquid, we found the result of this, during the reaction, the methane concentrations could up to 64.74%; the pH changed from 7.13 to 6.58 at the beginning, then gradually rose to 8.5, and has been stability to the end of reaction; For twelve days after, CH4 concentration has been stability at 19 ml/g,then Sudden rise to 40.65 ml/g at 21 days. According to the gas output and concentration can be initially determined that, there has two gas production peak through biological methane output process. CO2 is to primarily in the first stage, and the concentration of the methane production rate has been maximum in the second stage.
陈鑫、夏大平、吴昱、苏现波
环境科学理论生物科学现状、生物科学发展生物工程学
地质学生物甲烷瘦煤气体成分pH值
geologybiological methanelean coalgas compositionpH value
陈鑫,夏大平,吴昱,苏现波.生物甲烷产出过程中的气体组分变化[EB/OL].(2012-02-17)[2025-06-25].http://www.paper.edu.cn/releasepaper/content/201202-605.点此复制
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