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Biomethanation of blast furnace gas using anaerobic granular sludge via addition of hydrogen

机译:通过加入氢气使用厌氧颗粒污泥的高炉气体的生物甲壳

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摘要

The high concentrations of CO (toxic) and CO2 (greenhouse gases) in blast furnace gas (a by-product of steelworks) reflect its low calorific value. In this study, anaerobic granular sludge was used to convert carbon from blast furnace gas to methane via exogenous hydrogen addition. The inhibition of methane production by CO partial pressure (P-CO) was found to start from 0.4 atm. The intermediate metabolites from CO to methane including acetate, propionate, and H-2 accumulated at higher CO concentrations in the presence of 2-bromoethanesulfonic acid. After the introduction of H2 and blast furnace gas, although the hydrogen partial pressure (P-H2) up to 1.54 atm resulted in the maximum CH4 yield, the whole system was not stable due to the accumulation of a large amount of volatile fatty acids. The optimum P-H2 on CH4 production from the simulated blast furnace gas, 5.32 mmol g(-1) VSS, was determined at 0.88 atm in this study.
机译:高炉气体(钢厂副产品)中的高浓度的CO(毒性)和CO2(温室气体)反映了其低热值。 在该研究中,厌氧颗粒污泥用于通过外源氢添加将来自高炉气体的碳转化为甲烷。 发现通过Co部分压力(P-CO)的甲烷产生的抑制从0.4atm开始。 来自CO-甲烷的中间代谢物,包括醋酸盐,丙酸盐和H-2在2-溴乙烯磺酸存在下累积在较高的CO浓度下。 在引进H2和高炉气体后,虽然氢分压(P-H2)高达1.54 ATM导致最大CH4产率,但由于大量挥发性脂肪酸的积累,整个系统不稳定。 从模拟高炉气体,5.32mmol G(-1)VSS的CH4产生的最佳P-H2在本研究中在0.88atm下测定。

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  • 来源
    《RSC Advances》 |2018年第46期|共8页
  • 作者单位

    Univ Tsukuba Grad Sch Life &

    Environm Sci 1-1-1 Tennodai Tsukuba Ibaraki 3058572 Japan;

    Univ Tsukuba Grad Sch Life &

    Environm Sci 1-1-1 Tennodai Tsukuba Ibaraki 3058572 Japan;

    Univ Tsukuba Grad Sch Life &

    Environm Sci 1-1-1 Tennodai Tsukuba Ibaraki 3058572 Japan;

    Univ Tsukuba Grad Sch Life &

    Environm Sci 1-1-1 Tennodai Tsukuba Ibaraki 3058572 Japan;

    Univ Tsukuba Grad Sch Life &

    Environm Sci 1-1-1 Tennodai Tsukuba Ibaraki 3058572 Japan;

    Univ Tsukuba Grad Sch Life &

    Environm Sci 1-1-1 Tennodai Tsukuba Ibaraki 3058572 Japan;

    Univ Tsukuba Grad Sch Life &

    Environm Sci 1-1-1 Tennodai Tsukuba Ibaraki 3058572 Japan;

    JFE Steel Cooperat Chuo Ku 1 Kawasaki Cho Chiba 2600835 Japan;

    JFE Technores Cooperat Chiyoda Ku 2-7-1 Otemachi Tokyo 1000004 Japan;

    JFE Steel Cooperat Chuo Ku 1 Kawasaki Cho Chiba 2600835 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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