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  • biochemical methane potential of raw and pre-treated meat-processing wastes

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1390/01/01
    • تاریخ انتشار در تی پی بین: 1390/01/01
    • تعداد بازدید: 683
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     raw and pre-treated greaves and rinds, two meat-processing wastes, were assessed for biochemical methane potential (bmp). combinations of temperature (25, 55, 70 and 120 °c), naoh (0.3 g g−1 waste volatile solids) and lipase from candida rugosa (10 u g−1fat) were applied to promote wastes hydrolysis, and the effect on bmp was evaluated. cod solubilisation was higher (66% for greaves; 55% for rinds) when greaves were pre-treated with naoh at 55 °c and lipase was added to rinds after autoclaving. maximum fat hydrolysis (52–54%) resulted from naoh addition, at 55 °c for greaves and 25 °c for rinds. bmp of raw greaves and rinds was 707 ± 46 and 756 ± 56 l ch4 (at standard temperature and pressure) kg−1 vs, respectively. bmp of rinds improved 25% by exposure to 70 °c; all other strategies tested had no positive effect on bmp of both wastes, and anaerobic biodegradability was even reduced by the combined action of base and temperature.

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