Journal article
Potential use of feedlot cattle manure for bioethanol production
Bioresource Technology, Vol.183, pp.120-128
01/05/2015
PMID: 25727759
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Source: InCites
Abstract
This paper reports on processing options for the conversion of feedlot cattle manures into composite sugars for ethanol fermentation. Small-scale anaerobic digestion trials revealed that the process significantly reduces the content of glucan and xylan (ca. 70%) without effecting lignin. Moreover, anaerobic digestate (AD) fibres were poor substrates for cellulase (Cellic (R) CTec 2) saccharification, generating a maximum combined sugar yield of ca. 12% per original dry weight. Dilute acid pretreatment and enzyme saccharification of raw manures significantly improved total sugar recoveries, totalling 264 mg/g (79% theoretical). This was attained when manures were pretreated with 2.5% H2SO4 for 90 min at 121 degrees C and saccharified with 50 FPU CTec 2/g glucan. Saccharomyces cerevisiae efficiently fermented crude hydrolysates within 6 h, yielding 7.3 g/L ethanol, representing glucose to ethanol conversion rate of 70%. With further developments (i.e., fermentation of xylose), this process could deliver greater yields, reinforcing its potential as a biofuel feedstock. Crown Copyright (C) 2015 Published by Elsevier Ltd. All rights reserved.
Details
- Title
- Potential use of feedlot cattle manure for bioethanol production
- Creators
- T Vancov - NSW Department of Primary IndustriesR. C. S Schneider - Univ Santa Cruz do Sul, Dept Chem & Phys, BR-96815900 Santa Cruz Do Sul, RS, BrazilJ Palmer - Wollongbar Primary Ind Inst, NSW Dept Primary Ind, Wollongbar, NSW, AustraliaR Stuetz - University of New South WalesS McIntosh - NSW Department of Primary Industries
- Publication Details
- Bioresource Technology, Vol.183, pp.120-128
- Publisher
- ELSEVIER SCI LTD
- Number of pages
- 9
- Identifiers
- 991013015698502368
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article