Abstract：
:A mixture of rice straw (80%) and chicken manure (20%) was pretreated and fermented to carboxylic acids by using a mixed culture of marine mesophilic microorganisms. Two sets of four fermentors, built from PVC pipes, were used for both biomass pretreatment and fermentation. Four 1L fermentors (F1-F4) were arranged in series, where liquid fermentation products were transferred from one fermentor to the other, to form a train. A liquid volume of 10mL and 15mL were transferred every four days for Trains A and B, respectively. The maximum total acid concentration for F1 in Train A was 34.2g/L and the maximum acid concentration in F2-F4 was approximately 44g/L. The maximum total acid concentration in F1 in Train B was 30.5g/L and the maximum acid concentration in F2-F4 was approximately 48g/L. The conversion in each of the fermentors in Train A varied from 0.821 to 0.879g VS digested/g VS fed and the yield was in the range 0.489-0.609g total acids/g VS fed. The conversion and yield in Train B were 0.741-0.914g VS digested/g VS fed and 0.563-0.669g total acids/g VS fed, respectively. The continuum particle distribution model (CPDM) predicted acid concentrations and retention times in the fixed-bed fermentation system with R(2) of 0.67-0.84 in Trains A and B.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Agbogbo FK,Holtzapple MTdoi
10.1016/j.biortech.2006.06.021subject
Has Abstractpub_date
2007-05-01 00:00:00pages
1586-95issue
8eissn
0960-8524issn
1873-2976pii
S0960-8524(06)00291-4journal_volume
98pub_type
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