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H2回流对促进CO2减排及甲烷化作用的影响

INFLUENCE OF HYGROGEN RECYCLING ON CO2 EMISSION AND METHANATION IN TWO-STAGE ANAEROBIC DIGESTION
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摘要 研究两相厌氧消化系统处理乙醇发酵残留物的过程中,酸化相产生的氢气回流到甲烷相中是否促进CO2减排及甲烷化过程,提高清洁能源产量以及实现节能减排的目标。实验过程中回收酸化相产生的H2共10 L,将其回流到甲烷相后,CH4含量提高9.7%,同时CO2含量降低7.1%,H2利用率为94%,整个回流H2过程并未对反应系统稳定性造成影响,一方面说明通过H2回流可将酸化相产生的难以分离利用的中间产物转变为底物加以利用,使其转变为CH4气体,提高清洁能源的产量,另一方面可有效减少厌氧消化过程中CO2的排放,实现清洁能源生产过程中节能减排的目标。 The aim of this study is to research that whether the recycling of hydrogen gas,which come from the acidification pH ase,can effectively promote the CO2 emission reduction and methanation in the process of treating the ethanol fermentation residue by the two-pH ase anaerobic digestion system,so as to realize the targets of improve the clean energy production and decrease the emission of greenhouse gases. In the experiment,the methane content was increased by 9.7% after recycling 10 L of hydrogen to the methane pH ase, which was recovered from the acidification pH ase. At the same time,the carbon dioxide content was reduced by 7.1% and the utilization ratio of hydrogen was 94%.The whole recycle hydrogen process has no impact on the system stability. This experiment indicate that the recycling of hydrogen gas can not only effectively reduce the carbon dioxide emissions in the process of anaerobic digestion,but also make the intermediates coming from acidification pH ase,which is difficult to separate and use,be utilized for improving the clean energy production.
作者 杜济良 白龙 孙详 赵炳镐 杜颖 田沈 Du Jiliang;Bai Long;Sun Xiang;Zhao Binghao;Du Ying;Tian Shen(College of Life Science,Capital Normal University,Beijing 100048,China)
出处 《太阳能学报》 EI CAS CSCD 北大核心 2019年第8期2143-2147,共5页 Acta Energiae Solaris Sinica
基金 国家自然科学基金(31570790)
关键词 发酵残留物 厌氧消化 氢气回流 甲烷化 CO2减排 fermentation residue anaerobic digestion hydrogen recycling methanation CO2 emission reduction
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