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  • effect of additives on process stability of mesophilic anaerobic monodigestion of pig slaughterhouse waste

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 594
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the effect of two additives on anaerobic monodigestion of pig slaughterhouse waste was studied in three laboratory scale continuously stirred tank reactors (cstrs) operated for 242–284 days at 35 °c. a higher organic loading rate (olr), namely 2.25 kg volatile solids (vs)/m3 d with a hydraulic retention time (hrt) of 30 d was feasible with an additive containing fe, hcl and trace elements while an olr of 1.5 kg vs/m3 d (hrt 30 d) led to instabilities in cstr with an additive consisting of fe and hcl and in cstr without additives. methane yields of ca. 700 dm3 ch4/kg vsfed were obtained in all reactors under stable conditions. both additives decreased h2s concentration of the biogas below detection limit 0.5 ppm while in a control reactor h2s concentration was up to 1900 ppm. in conclusion, the results suggest the possibility that additives may facilitate higher olrs in monodigestion of pig slaughterhouse waste.

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