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Combined process for ethanol fermentation at high-solids loading and biogas digestion from unwashed steam-exploded corn stover.

Abstract：

:A combined process was designed for the co-production of ethanol and methane from unwashed steam-exploded corn stover. A terminal ethanol titer of 69.8 g/kg mass weight (72.5%) was achieved when the fed-batch mode was performed at a final solids loading of 35.5% (w/w) dry matter (DM) content. The whole stillage from high-solids ethanol fermentation was directly transferred in a 3-L anaerobic digester. During 52-day single-stage digester operation, the methane productivity was 320 mL CH₄/g volatile solids (VS) with a maximum VS reduction efficiency of 55.3%. The calculated overall product yield was 197 g ethanol + 96 g methane/kg corn stover. This indicated that the combined process was able to improve overall content utilization and extract a greater yield of lignocellulosic biomass compared to ethanol fermentation alone.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Wang Z,Lv Z,Du J,Mo C,Yang X,Tian S

doi

10.1016/j.biortech.2014.05.044

subject

Has Abstract

pub_date

2014-08-01 00:00:00

pages

282-7

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(14)00703-2

journal_volume

166

pub_type

杂志文章

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