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  • optimizing anaerobic digestion by selection of the immobilizing surface for enhanced methane production

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 467
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     maximizing methane production while maintaining an appreciable level of process stability is a crucial challenge in the anaerobic digestion industry. in this study, the role of six parameters: the type of immobilizing supports, loading rate, inoculum levels, c:n ratio, trace nutrients concentrations and mixing rate, on methane production were investigated under thermophilic conditions (55 ± 1 °c) with synthetic substrate medium. the immobilizing supports were silica gel, sand, molecular sieve and dowex marathon beads. a taguchi design of experiment (doe) methodology was employed to determine the effects of different parameters using an l16 orthogonal array. overall, immobilizing supports influenced methane production substantially (contributing 61.3% of the observed variation in methane yield) followed by loading rate and inoculum which had comparable influence (17.9% and 17.7% respectively). optimization improved methane production by 153% (from 183 to 463 ml ch4 l−1 d−1).

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