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  • operation of a cylindrical bioelectrochemical reactor containing carbon fiber fabric for efficient methane fermentation from thickened sewage sludge

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 841
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     a bioelectrochemical reactor (ber) containing carbon fiber fabric (cff) (ber + cff) enabled efficient methane fermentation from thickened sewage sludge. a cylindrical ber + cff was proposed and scaled-up to a volume of 4.0-l. thickened sewage sludge was treated using three types of methanogenic reactors. the working electrode potential in the ber + cff was regulated at −0.8 v (vs. ag/agcl). ber + cff showed gas production of 3.57 l l−1 day−1 at a hydraulic retention time (hrt) of 4.0 days; however, non-ber + cff showed a lower gas production rate (0.83 l l−1 day−1) at this hrt, suggesting positive effects of electrochemical regulation. a stirred tank reactor (without cff) deteriorated at an hrt of 10 days, suggesting positive effects of cff. 16s rrna gene analysis showed that the ber + cff included 3 kinds of hydrogenotrophic methanogens and 1 aceticlastic methanogen. these results demonstrate the effectiveness of the ber + cff for scale-up and flexibility of this technology.

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