Abstract：
:This study examine ways to make biorefinery lignin accessible for anaerobic digestion. The raw material was the residue after removing carbohydrates by Wet Explosion pretreatment at 190 °C and 7.5% O2 followed by enzymatic hydrolysis. The residual solid was mainly composed of lignin and was the raw material for a second WEx pretreatment operated at 220 °C with 4% oxygen and variable concentrations of NaOH (0-2%). Lignin B was the residue after pretreated without NaOH, Lignin C was pretreated at 1% NaOH, and Lignin E at 2% NaOH. Anaerobic digestion was carried out on all lignin fractions (Lignin A, B, C and E) at thermophilic conditions (52 °C) by mixing 70% of each lignin fractions with 30% clarified manure. The results showed that the lignin samples were demethoxylated as part of the biodegradation and that the highest severity pretreatment (with oxygen and 2% NaOH) resulted in the highest methane yield.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Usman Khan M,Kiaer Ahring Bdoi
10.1016/j.biortech.2019.122537subject
Has Abstractpub_date
2020-02-01 00:00:00pages
122537eissn
0960-8524issn
1873-2976pii
S0960-8524(19)31767-5journal_volume
298pub_type
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