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Bioethanol production from dedicated energy crops and residues in Arkansas, USA
Author(s) -
Ge Xumeng,
Burner David M.,
Xu Jianfeng,
Phillips Gregory C.,
Sivakumar Ganapathy
Publication year - 2011
Publication title -
biotechnology journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.144
H-Index - 84
eISSN - 1860-7314
pISSN - 1860-6768
DOI - 10.1002/biot.201000240
Subject(s) - arundo donax , miscanthus , biofuel , energy crop , agronomy , biomass (ecology) , ethanol fuel , pennisetum purpureum , bioenergy , lignocellulosic biomass , cellulosic ethanol , crop residue , environmental science , biology , microbiology and biotechnology , cellulose , agriculture , dry matter , ecology , biochemistry
Globally, one of the major technologic goals is to achieve cost‐effective lignocellulosic ethanol production from biomass feedstocks. Lignocellulosic biomass of four dedicated energy crops [giant reed ( Arundo donax L.), elephantgrass ( Pennisetum purpureum (Schumach), Miscanthus × giganteus (Illinois clone), and (clone Q42641) {hybrid of Miscanthus sinensis Anderss. and Miscanthus sacchariflorus (Maxim)}, Hack. called giant miscanthus, and sugarcane clone US 84‐1028 ( Saccharum L. spp. hybrid)] and residues from two crops [soybean ( Glycine max (L.) Merr.) litter and rice ( Oryza sativa L.) husk] were tested for bioethanol production using cellulose solvent‐based lignocellulose fractionation (CSLF) pretreatment and enzymatic (cellulase) hydrolysis. Giant miscanthus (Illinois), giant reed, giant miscanthus (Q42641), elephantgrass, and sugarcane all yielded higher amount of glucose on a biomass dry weight basis (0.290–0.331 g/g), than did rice husk (0.181 g/g) and soybean litter (0.186 g/g). To reduce the capital investment for energy consumption in fermentation, we used a self‐flocculating yeast strain (SPSC01) to ferment the lignocellulosic biomass hydrolysates. Bioethanol production was ∼0.1 g/g in dedicated energy crops and less in two crop residues. These methods and data can help to develop a cost‐effective downstream process for bioethanol production.