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Bioresource technology >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/2241/98679
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| Title: | Enhancement of hydrolysis and acidification of solid organic wastenext term by a rotational drum fermentation system with methanogenic leachate recirculation |
| Authors: | Chen, Ling
Jiang, Wei Zhong
Kitamura, Yutaka
Li, Baoming
北村, 豊 |
| Issue Date: | Aug-2007 |
| Publisher: | Elsevier |
| Journal Title: | Bioresource technology |
| Volume: | 98 |
| Issue: | 11 |
| Start Page: | 2194 |
| End Page: | 2200 |
| DOI: | 10.1016/j.biortech.2006.08.015 |
| PMID: | 17055260 |
| Abstract: | A cascade process of a rotational drum fermentation system with leachate recirculation from a methanogenic to the acidogenic reactor
was constructed to enhance the hydrolysis and acidification of solid organic waste. Using fresh soybean meal as substrates, two process
configurations, Cascade process 1 and 2, without and with leachate recirculation, respectively were employed to perform the experimental
estimation under mesophilic condition and a total HRT of 20 days. An apparent first-order hydrolysis rate constant of 9.0 x 10-3/d
for Cascade process 1 at pH 4.5-4.6, and 15.8 x 10-3/d for Cascade process 2 at pH 4.6-5.2 were obtained. The apparent VS degradation
ratios ranged from 16.5% to 21.1% and total VA (as acetic acid) from 14.5 to 16.7 g/L. Occupying ratios for ionized VA decreased from
40.5% to 35.3% for Cascade process 1 and increased to 68.5% for Cascade process 2. However, occupying ratios of acetic acid decreased
from 96.1% to 94.3% for Cascade process 1 and to 72.6% for Cascade process 2, whereas propionic acid and butyric acid ratios increased
in acidogenesis of Cascade process 2. The leachate recirculation promoted hydrolysis of substrate in Cascade process 2, where apparent
hydrolysis rate constant and VS degradation ratio were higher than that of Cascade process 1. |
| URI: | http://hdl.handle.net/2241/98679 |
| Rights: | ©2006 Elsevier Ltd |
| Text Version: | author |
| Appears in Collections: | Bioresource technology
北村 豊 (Kitamura Yutaka)
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