| 脱硫MEC的硫价态变化与微生物群落演替规律 |
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| 引用本文： | 赵玉娇, 朱雨森, 郭美欣, 徐沛, 亓雪娇, 王勇, 贾璇. 脱硫MEC的硫价态变化与微生物群落演替规律[J]. 环境工程学报, 2022, 16(1): 264-271. doi: 10.12030/j.cjee.202110096 |
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| 作者姓名： | 赵玉娇 朱雨森 郭美欣 徐沛 亓雪娇 王勇 贾璇 |
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| 作者单位： | 1.北京工商大学，国家环境保护食品链污染防治重点实验室，北京 100048; 2.北京工商大学，中国轻工业清洁生产和资源综合利用重点实验室，北京 100048; 3.中国环境科学研究院，环境基准与风险评估国家重点实验室，北京 100012 |
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| 基金项目： | 国家重点研发计划资助项目(2019YFD1100304) |
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| 摘 要： | 采用微生物电解池(microbial electrolysis cell，MEC)进行沼气脱硫研究，探究了阳极的S2−去除率、硫价态的变化及微生物群落演替规律。结果表明，该方法中S2−去除率可达到90%以上，SO42−为阳极硫氧化反应的主要产物。微生物群落分析结果表明，Pseudomonas为脱硫优势微生物，在阳极生物膜与溶液中的丰度分别为7.6%和15.8%；电活性细菌Geobacter在阳极生物膜与溶液中的丰度分别为11.3%和5.26%，参与了Pseudomonas的种间电子传递，从而提高硫氧化效率。本研究结果可为MEC沼气脱硫工艺提供参考。
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| 关 键 词： | 微生物电解池 沼气脱硫 S2− 硫价态 微生物群落 |
| 收稿时间： | 2021-10-20 |
Sulfur valence variety and microbial community succession of desulphurization MEC |
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| ZHAO Yujiao, ZHU Yusen, GUO Meixin, XU Pei, QI Xuejiao, WANG Yong, JIA Xuan. Sulfur valence variety and microbial community succession of desulphurization MEC[J]. Chinese Journal of Environmental Engineering, 2022, 16(1): 264-271. doi: 10.12030/j.cjee.202110096 |
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| Authors: | ZHAO Yujiao ZHU Yusen GUO Meixin XU Pei QI Xuejiao WANG Yong JIA Xuan |
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| Affiliation: | 1.State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing 100048, China; 2.Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China; 3.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China |
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| Abstract: | Microbial electrolysis cell (MEC) was used to perform biogas desulfurization in this study. The removal rate of S2−, the variety of different valence of sulfur and the microbial community in MEC anode were analyzed. The results suggested that S2− removal rate was higher than 90% and SO42− was the main product of the anodic sulfur oxidation reaction. The microbial community analysis results showed that Pseudomonas was the predominate bacterial genus for desulfurization. The relative abundance of Pseudomonas in anodic biofilm and anolyte were 7.6% and 15.8%, respectively. The relative abundance of electroactive bacterium Geobacter in anodic biofilm and anolyte were 11.3% and 5.26%, respectively. Geobacter participated in the interspecies electron transfer with Pseudomonas, thus the of sulfur oxidation efficiency increased. The above results can provide technical support for the MEC biogas desulfurization process, which can be combined with MEC biogas decarbonization to achieve biogas purification and upgrading. |
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| Keywords: | microbial electrolysis cell biogas desulfurization S2−< sup> sulfur valence microbial community |
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