کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6578262 | 1422927 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gaseous toluene powered microbial fuel cell: Performance, microbial community, and electron transfer pathway
ترجمه فارسی عنوان
سلول های سوختی میکروبی که توسط تولوئن گازی تولید می شود: عملکرد، جامعه میکروبی و مسیر انتقال الکترون است
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
A microbial fuel cell (MFC) was used to evaluate its performance of the gaseous toluene removal in this work. The experimental results revealed that the MFC exhibited a removal efficiency as high as 88% with a toluene concentration of 300â¯mgâ¯mâ3. Moreover, the closed-circuit MFC exhibited 1.4-3.5 times higher toluene removal efficiency compared with the open-circuit MFC, indicating that the interaction between the electrodes and microorganisms accelerates the electron transfer rate and thus enhances the microbial degradation rate. The microbial community analysis indicated that, in the toluene-powered MFC, the growth of the exoelectrogens such as Arcobacter and Geobacter were inhibited and the toluene degraders such as Chryseobacterium and Zoogloea prevailed in the MFC. For example, Arcobacter was almost disappeared and Geobacter was decreased by 40% as the fuel in the MFC switched from the acetate to toluene. Moreover, compared with Chryseobacterium, Zoogloea exhibited a high activity in the toluene removal as evidenced by the relationship between microbial community and its performance. Furthermore, the cyclic voltammetry analysis showed that an oxidation peak at â0.31â¯V vs Ag/AgCl and an apparent redox-area at â0.1 to +0.2â¯V vs Ag/AgCl was observed compared to the abiotic control, which are typical to the menaquinone and the outer membrane cytochromes (OMC) such as OmcZ, OmcS, a-type, and d-type. Therefore, a direct electron transfer pathway involving the menaquinone and OMC were proposed in the toluene-powered MFC. This work will provide some insight into development of gaseous VOCs-powered MFC and a novel technology for the VOCs removal.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 351, 1 November 2018, Pages 515-522
Journal: Chemical Engineering Journal - Volume 351, 1 November 2018, Pages 515-522
نویسندگان
Shihan Zhang, Juping You, Ni An, Jingkai Zhao, Lidong Wang, Zhuowei Cheng, Jiexu Ye, Dongzhi Chen, Jianmeng Chen,