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首页> 外文期刊>Journal of Hazardous Materials >Electricity production of microbial fuel cells by degrading cellulose coupling with Cr(Ⅵ ) removal
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Electricity production of microbial fuel cells by degrading cellulose coupling with Cr(Ⅵ ) removal

机译：通过降解纤维素偶联与Cr（Ⅵ）去除通过降解微生物燃料电池的电力生产

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摘要

A facultative exoelectrogen strain Lsc-8 belonging to the Cellulomonas genus with the ability to degrade carboxymethyl cellulose (CMC) coupled with the reduction of Cr(VI), was successfully isolated from rumen content. The maximum output power density of the microbial fuel cells (MFCs) inoculated strain Lsc-8 was 9.56 +/- 0.37 mW.m(-2) with CMC as the sole carbon source. From the biomass analysis it can be seen that the electricity generation of the MFCs was primarily attributed to the planktonic cells of strain Lsc-8 rather than the biofilm attached on the electrode, which was different from Geobacter sulfurreducens. Especially, during electricity generation of the MFCs using CMC as carbon source in the anode chamber, the Cr(VI) reduction were simultaneously realized. And it is also found that the Cr(VI) reduction ratio by strain Lsc-8 is directly related to the initial Cr(VI) concentration, and it increased with the increase of initial Cr(VI) concentration at first, then started to decrease when the Cr(VI) concentration was above 21 mg.L-1. Meanwhile, the highest output power density of 3.47 +/- 0.28 mW.m(-2) was observed coupling with 95.22 +/- 2.72 % of Cr(VI) reduction. These data suggested that the strain Lsc-8 could reduce high toxicity Cr(VI) to low toxicity Cr(III) coupled with electricity generation in MFCs with CMC as the carbon source. Our results also suggested that this study will provide a possibility to simultaneously degrade Cr(VI) and generate electricity by using cellulose as the carbon source via MFCs.
机译：从瘤胃含量成功地分离出属于具有降解Cr（VI）的羧甲基纤维素（CMC）的能力降解Cr羧甲基纤维素（CMC）的逐渐降解Cr（VI）的能力。微生物燃料电池（MFCs）接种应变Lsc-8的最大输出功率密度为9.56 +/- 0.37mW.m（-2），CMC作为唯一的碳源。从生物量分析中可以看出，MFC的发电主要归因于菌株LSC-8的浮鳞细胞，而不是附着在电极上的生物膜，这与Geobacter Sulfurreducens不同。特别地，在使用CMC作为阳极室中的碳源的MFC的发电期间，同时实现CR（VI）减少。还发现，菌株LSC-8的Cr（VI）还原率与初始Cr（VI）浓度直接相关，并且在首先增加初始Cr（VI）浓度的增加，然后开始减少当Cr（VI）浓度高于21 mg.L-1时。同时，观察到3.47 +/- 0.28 mW.m（-2）的最高输出功率密度与95.22 +/- 2.72％的Cr（vi）减少偶联。这些数据表明应变LSC-8可以将高毒性Cr（vi）降低到低毒性Cr（iii）与MFC中的发电，以CMC为碳源。我们的研究结果还表明，该研究将提供同时降解Cr（VI）并通过MFCS使用纤维素作为碳源产生电力。

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  • 来源
    《Journal of Hazardous Materials》 |2020年第5期|122184.1-122184.9|共9页
  • 作者

    Cao Lianbin; Ma Yamei; Deng Dandan; Jiang Huichun; Wang Jiaxin; Liu Ying;

  • 作者单位

    Northwest A&F Univ Coll Life Sci Shaanxi Key Lab Agr & Environm Microbiol 22 Xinong Rd Yangling 712100 Shaanxi Peoples R China;

    Northwest A&F Univ Coll Life Sci Shaanxi Key Lab Agr & Environm Microbiol 22 Xinong Rd Yangling 712100 Shaanxi Peoples R China;

    Shangqiu Normal Univ Coll Biol & Food 55 Pingyuan Rd Shangqiu 476000 Henan Peoples R China;

    Northwest A&F Univ Coll Life Sci Shaanxi Key Lab Agr & Environm Microbiol 22 Xinong Rd Yangling 712100 Shaanxi Peoples R China;

    Northwest A&F Univ Coll Life Sci Shaanxi Key Lab Agr & Environm Microbiol 22 Xinong Rd Yangling 712100 Shaanxi Peoples R China;

    Northwest A&F Univ Coll Life Sci Shaanxi Key Lab Agr & Environm Microbiol 22 Xinong Rd Yangling 712100 Shaanxi Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cellulomonas; Cellulose; MFCs; Riboflavin; Cr(VI) degradation;

    机译：Cellulomonas;纤维素;MFCS;核黄素;CR（VI）降解;

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