Wang Ying, Yin Chenzhu, Liu Ye, Tan Mengjiao, Shimizu Kazuya, Lei Zhongfang, Zhang Zhenya, Sumi Ikuhiro, Yao Yasuko, Mogi Yasuhiro
Graduate School of Life and Environmental Sciences, University of Tsukuba 1-1-1, Tennodai Tsukuba Ibaraki 3058572 Japan
JFE Steel Cooperation 1, Kawasaki-cho Chuo-ku Chiba 2600835 Japan.
RSC Adv. 2018 Jul 24;8(46):26399-26406. doi: 10.1039/c8ra04853c. eCollection 2018 Jul 19.
The high concentrations of CO (toxic) and CO (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 exogenous hydrogen addition. The inhibition of methane production by CO partial pressure ( ) was found to start from 0.4 atm. The intermediate metabolites from CO to methane including acetate, propionate, and H accumulated at higher CO concentrations in the presence of 2-bromoethanesulfonic acid. After the introduction of H and blast furnace gas, although the hydrogen partial pressure ( ) up to 1.54 atm resulted in the maximum CH yield, the whole system was not stable due to the accumulation of a large amount of volatile fatty acids. The optimum on CH production from the simulated blast furnace gas, 5.32 mmol g VSS, was determined at 0.88 atm in this study.
高炉煤气（钢铁厂的一种副产品）中高浓度的一氧化碳（有毒）和二氧化碳（温室气体）反映出其低热值。在本研究中，厌氧颗粒污泥被用于通过外源添加氢气将高炉煤气中的碳转化为甲烷。发现一氧化碳分压（ ）对甲烷产生的抑制作用从0.4个大气压开始。在2-溴乙烷磺酸存在的情况下，从一氧化碳到甲烷的中间代谢产物，包括乙酸盐、丙酸盐和氢气，在较高的一氧化碳浓度下会积累。引入氢气和高炉煤气后，尽管氢气分压（ ）高达1.54个大气压时甲烷产量最高，但由于大量挥发性脂肪酸的积累，整个系统并不稳定。本研究确定，在0.88个大气压下，模拟高炉煤气产生甲烷的最佳 为5.32 mmol g VSS。
