Abstract：
:Swine manure mono-digestion often results to economically non-feasible processes, due to the high dilution and ammonia concentration together with the low degradation rates it presents. The effects of different parameters of Aqueous Ammonia Soaking (AAS) as a pretreatment for improving the digestion of manure fibers when coupled to an ammonia removal step were investigated in this study. Response Surface Methodology was followed and the influence and interactions of the following AAS parameters were studied: NH3 concentration, duration and solid-to-liquid ratio. The mild conditions found to be optimal (7%w/w NH3, 96h, and 0.16kg/L) in combination to a significant increase of the short term CH4 yield (244% in 17days), make this pretreatment a promising solution for improving swine manure mono-digestion. Furthermore, compositional analysis of the manure fibers revealed significant solubilization of hemicellulose, while no lignin removal or loss of cellulose occurred under optimal conditions.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Lymperatou A,Gavala HN,Skiadas IVdoi
10.1016/j.biortech.2017.07.147subject
Has Abstractpub_date
2017-11-01 00:00:00pages
509-516issue
Pt 1eissn
0960-8524issn
1873-2976pii
S0960-8524(17)31263-4journal_volume
244pub_type
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