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Modeling of gas generation from the river adjacent to the manufactured gas plant

机译：河流邻近制造天然气厂的河流建模

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Ebullition of gas bubbles through sediment can enhance the migration of gases through the subsurface and potentially affect the emission of important greenhouse gases to the atmosphere. To better understand the parameters controlling ebullition, investigations of gas ebullition in the Grand Calumet river (Indiana, USA) were conducted. We found that gas ebullition might shift and change with different vertical hydraulic gradients and temperatures. CO2 and CH4 flux for each site increased with an increase in temperature. A comparatively simple linear relationship existed between the gas flux and the measured parameters (G(F) = 0.316T + 300.66i, R-2 = 0.82). The gas flux in the sand cap was more variable than that in sediment. Moreover, the total field gas fluxes varied from 10 to 180 mmol m(-2) d(-1) for sediment and from 5 to 35 mmol m(-2) d(-1) for the sand cap, which proved an in situ sand cap could provide effective remediation. The analysis presented here has shown that gas fluxes and reactive transport modeling can provide effective means of investigating ebullition and quantifying gas transport.
机译：通过沉积物的气泡沸腾可以通过地下增强气体的迁移，并可能影响到大气中重要的温室气体的排放。为了更好地了解控制沸腾的参数，进行了大卢穆特河（印第安纳州，美国）的气体沸腾的调查。我们发现气体沸腾可能会随着不同的垂直液压梯度和温度转变和变化。每个部位的CO 2和CH 4通量随着温度的增加而增加。气体通量和测量参数之间存在相对简单的线性关系（G（f）= 0.316t + 300.66i，R-2 = 0.82）。砂帽中的气体通量比沉淀物更可变。此外，对于沉积物的沉积物和5至35mmol M（-2）D（-1），用于砂帽的总现场气体通量从10至180mmol m（-2）d（-1）变化，这证明了原位沙帽可以提供有效的修复。这里提出的分析表明，气体助熔剂和反应性运输建模可以提供研究沸腾和量化气体运输的有效手段。

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  • 来源
    《RSC Advances》 |2015年第13期|共9页
  • 作者

    Zhu Tengyi; Fu Dafang; Jafvert Chad T.; Singh Rajendra Prasad;

  • 作者单位

    Southeast Univ Sch Civil Engn Nanjing 210096 Jiangsu Peoples R China;

    Southeast Univ Sch Civil Engn Nanjing 210096 Jiangsu Peoples R China;

    Purdue Univ Sch Civil Engn W Lafayette IN 47907 USA;

    Southeast Univ Sch Civil Engn Nanjing 210096 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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