کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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683325 | 888999 | 2009 | 6 صفحه PDF | دانلود رایگان |
The effects of porphyritic andesite on the hydrolysis and acidogenesis of solid organic wastes were investigated by batch and continuous experiments using a rotational drum fermentation system. The results of the batch experiment show that if porphyritic andesite (1%, 3%, and 5% reactants) is added initially, the pH level increases and hydrolysis and acidogenesis are accelerated. The highest surface based hydrolysis constant (26.4 × 10−3 kg m−2 d−1) and volatile solid degradation ratio (43.3%) were obtained at a 1% porphyritic andesite addition. In the continuous experiment, porphyritic andesite elevated the first order hydrolysis constant from 13.10 × 10−3 d−1 to 18.82 × 10−3 d−1. A particle mean diameter reduction rate of 33.05 μm/d and a volatile solid degradation rate of 3.53 g/L d−1 were obtained under the hydraulic retention time of 4, 8, 12 and 16 d.
Journal: Bioresource Technology - Volume 100, Issue 23, December 2009, Pages 5594–5599