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  • design and characterization of a microbial fuel cell for the conversion of a lignocellulosic crop residue to electricity

    نویسندگان :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 599
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     agricultural crop residues contain high amounts of biochemical energy as cellulose and lignin. a portion of this biomass could be sustainably harvested for conversion to bioenergy to help offset fossil fuel consumption. in this study, the potential for converting lignocellulosic biomass directly to electricity in a microbial fuel cell (mfc) was explored. design elements of tubular air cathode mfcs and leach-bed bioreactors were integrated to develop a new solid-substrate mfc in which cellulose hydrolysis, fermentation, and anode respiration occurred in a single chamber. electricity was produced continuously from untreated corncob pellets for >60 d. addition of rumen fluid increased power production, presumably by providing growth factors to anode-respiring bacteria. periodic exposure to oxygen also increased power production, presumably by limiting the diversion of electrons to methanogenesis. in the absence of methanogenesis, bioaugmentation with geobacter metallireducens further improved mfc performance. under these conditions, the maximum power density was 230 mw/m3.

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