Abstract:
:In solid-state anaerobic digestion (SS-AD) of cellulosic biomass, the volumetric methane production rate has often been found to increase with the increase in total solids (TS) content until a threshold is reached, and then to decrease. This phenomenon cannot be explained by conventional understanding derived from liquid anaerobic digestion. This study proposed that the high TS content-caused mass diffusion limitation may be responsible for the observed methane production deterioration. Based on this hypothesis, a new SS-AD model was developed by taking into account the mass diffusion limitation and hydrolysis inhibition. The good agreement between model simulation and the experimental as well as literature data verified that the observed reduction in volumetric methane production rate could be ascribed to hydrolysis inhibition as a result of the mass diffusion limitation in SS-AD.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Xu F,Wang ZW,Tang L,Li Ydoi
10.1016/j.biortech.2014.05.114subject
Has Abstractpub_date
2014-09-01 00:00:00pages
178-85eissn
0960-8524issn
1873-2976pii
S0960-8524(14)00832-3journal_volume
167pub_type
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