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Enhancing methane production of corn stover through a novel way: sequent pretreatment of potassium hydroxide and steam explosion.

Abstract：

:Getting over recalcitrance of lignocellulose is effective way to fuel production from lignocellulosic biomass. In current work, different pretreatments were applied to enhance the digestibility of corn stover (CS). Results showed that steam explosion (SE)-treated CS produced maximal methane yield (223.2 mL/gvs) at 1.2 MPa for 10 min, which was 55.2% more than untreated (143.8 mL/gvs). Whereas 1.5% KOH-treated CS produced maximum methane yield of 208.6 mL/gvs, and significantly (α<0.05) improved 45.1% with respect to untreated. Sequent pretreatment of potassium hydroxide and steam explosion (SPPE) (1.5% KOH-1.2 MPa, 10 min) achieved a very significant (α<0.01) improvement (80.0%) of methane yield (258.8 mL/gvs) compared with untreated CS. Methane production could be well explained by the first-order and modified Gompertz models. Besides, SEM, FTIR, and XRD analyses validated structural changes of CS after SPPE. SPPE might be a promising method to pretreat CS in the future AD industry.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Li J,Zhang R,Siddhu MA,He Y,Wang W,Li Y,Chen C,Liu G

doi

10.1016/j.biortech.2015.01.050

subject

Has Abstract

pub_date

2015-04-01 00:00:00

pages

345-50

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(15)00070-X

journal_volume

181

pub_type

杂志文章

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