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首页> 外文期刊>International journal of hydrogen energy >Microbial fuel cell coupled ecological floating bed for enhancing bioelectricity generation and nitrogen removal
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Microbial fuel cell coupled ecological floating bed for enhancing bioelectricity generation and nitrogen removal

机译：微生物燃料电池耦合生态浮床，用于增强生物电性产生和氮气去除

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摘要

An ecological floating bed-microbial fuel cell (EFB-MFC) coupled system was constructed in this study. With windmill grass, goldfish algae, water hyacinth and water spinach chosen as the cathodic floating bed plants, performance with regard to electricity generation and nitrogen removal was investigated. For electricity generation, introducing plants into an MFC reduced the internal resistance of the system by 21.23%-67.66% and increased the average voltage by 26.26%-62.63% compared to the system with no plants. In addition, the coupled system improved the removal efficiency of NH4+-N and TN by 2.54%-16.40% and 2.91%-16.86%, respectively. The water spinach system achieved the best performance for electricity generation and nitrogen removal. However, the extra NH4+-N released by rotten roots of windmill grass impaired the nitrogen removal. Radial oxygen loss and root exudates played significant roles in enhancing electricity generation and nitrogen removal. Moreover, electricity generation can stimulate the activity of enzymes related to nitrogen removal and drive the migration of NH4+-N thereby enhancing nitrogen removal. This study also first revealed that an EFB-MFC showed greater capability than a nonplanted group for protecting enzyme activity related to nitrogen removal from excessive high water temperature (over 30 degrees C). (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译：本研究构建了一种生态浮床 - 微生物燃料电池（EFB-MFC）偶联系统。随着风车草，选择作为阴极浮床植物的金鱼藻类，水葫芦和水菠菜，研究了发电和氮气去除的性能。对于发电，将植物引入MFC将系统的内阻降低21.23％-67.66％，与没有植物的系统相比，平均电压增加26.26％-62.63％。此外，耦合系统分别提高了NH4 + -N和TN的去除效率2.54％-16.40％和2.91％-16.86％。水菠菜系统实现了发电和氮气去除的最佳性能。然而，额外的NH4 + -N由风车草的腐烂根部释放损害了氮气去除。径向氧气损失和根除渗透物在提高发电和氮气去除方面发挥了重要作用。此外，发电可以刺激与氮气除去相关的酶活性，并驱动NH 4 + -N的迁移，从而提高氮气去除。本研究还首先表明EFB-MFC显示出比非植物的群体更高的能力，用于保护与氮气除去的酶活性有关的酶活性（超过30℃）。 （c）2020氢能源出版物LLC。 elsevier有限公司出版。保留所有权利。

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  • 来源
    《International journal of hydrogen energy》 |2021年第20期|11433-11444|共12页
  • 作者

    Yang Xiao-Li; Li Tao; Xia Yang-Guang; Singh Rajendra Prasad; Song Hai-Liang; Zhang Heng; Wang Ya-Wen;

  • 作者单位

    Southeast Univ Sch Civil Engn Dong Nan Da Xue Rd 2 Nanjing 211189 Peoples R China;

    Southeast Univ Sch Civil Engn Dong Nan Da Xue Rd 2 Nanjing 211189 Peoples R China;

    Southeast Univ Sch Civil Engn Dong Nan Da Xue Rd 2 Nanjing 211189 Peoples R China;

    Southeast Univ Sch Civil Engn Dong Nan Da Xue Rd 2 Nanjing 211189 Peoples R China;

    Nanjing Normal Univ Sch Environm Jiangsu Engn Lab Water & Soil Ecoremediat Nanjing 210023 Peoples R China;

    Southeast Univ Sch Civil Engn Dong Nan Da Xue Rd 2 Nanjing 211189 Peoples R China;

    Nanjing Normal Univ Sch Environm Jiangsu Engn Lab Water & Soil Ecoremediat Nanjing 210023 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Ecological floating bed; Microbial fuel cell; Electricity generation; Nitrogen removal;

    机译：生态浮动床;微生物燃料电池;发电;氮气去除;
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