Bioethanol production from barley hull using SAA (soaking in aqueous ammonia) pretreatment

Kim, Tae Hyun; Taylor, Frank; Hicks, Kevin B.

doi:10.1016/j.biortech.2007.10.055

Cited by 271 publications

(115 citation statements)

References 13 publications

Supporting

Mentioning

105

Contrasting

Unclassified

Order By: Relevance

“…For optim ized conditions with a 60 °C processing tem perature, Kim and Lee (2007) report 62% lignin removal and 15% xylan removal from corn stover. Xylan removal was ~ 30% and lignin removal ~ 60% when applying SAA to barley hulls at 75°C (Kim et al, 2008). W hile these rem oval fractions of hem icellulose m ake SAA som ewhat disfavored for application in a dedicated biochem ical biorefinery, wherein the so lubilized hem icellulose is not available f or subsequent fermentation to ethanol, this low-co st, low-energy pretreatment approach may prove to be advantageous in bioref ineries that u tilize integrated biochem ical and therm ochemical processing, wherein hemicellulose solubilization does not represent a conversion loss.…”

Section: Soaking In Aqueous Ammonia (Saa) Pretreatmentmentioning

confidence: 99%

“…This technique was developed by Prof. Yoon Lee of Auburn University (Yoon et al, 1995;Kim et al, 2003;Lee, 2005, 2007) and has been m ost recently applied by his form er student, T.H. Kim (form erly of the USDA and currently at Iowa State University) (Kim et al, 2008;. R ecently this technique was applied to the pilotscale pretreatment of switchgrass in 4 kg increments in a 75 L vessel (Himmelsbach et al, 2009).…”

Section: Soaking In Aqueous Ammonia (Saa) Pretreatmentmentioning

confidence: 99%

See 1 more Smart Citation

Development of efficient, integrated cellulosic biorefineries : LDRD final report.

Teh¹,

Hecht²,

Shaddix³

et al. 2010

View full text Add to dashboard Cite

Cellulosic ethanol, generated from lignocellulosic biomass sources such as grasses and trees, is a promising alternative to conventional starch-and sugar-based ethanol production in term s of potential production quantities, CO 2 im pact, and econom ic com petitiveness. In addition, cellulosic ethanol can be generated (at least in principle) without com peting with food production. However, approximately 1/3 of the lignocellulosic biomass material (including all of the lignin) cannot be converted to ethanol thr ough biochemical means and m ust be extracted at some point in the biochem ical process. In this project we gathered basic inform ation on the prospects for utilizing this lignin residue m aterial in therm ochemical conversion processes to improve the overall energy efficiency or li quid fuel production capacity of cellulosic biorefineries. Two existing pretreatm ent appr oaches, soaking in aqueous am monia (SAA) and the Arkenol (strong sulfuric acid) process, were im plemented at Sandia and used to generated suitable quantities of residue material from corn stover and eucalyptus feedstocks for subsequent thermochemical research. A third, novel technique , using ionic liquids (IL) was investigated by Sandia researchers at the Joint Bioenergy Institute (JBEI), but was not successf ul in isolating sufficient lignin residue. Additional residue m aterial for therm ochemical research was supplied from the dilute-acid sim ultaneous saccharification/fermentation (SSF) pilot-scale process at the National Renewable Energy Laboratory (NREL). Th e high-tem perature volatiles yields of the different residues were m easured, as were the char com bustion reactivities. The residue chars showed slightly lower reactivity than raw biom ass char, except for the SSF residue, which had substantially lower reactivity. Exergy analysis was applied to the NREL standard process design model for therm ochemical ethanol production a nd from a prototypical dedicated biochem ical process, with process data supplied by a r ecent report from the National Research Council (NRC). The therm ochemical system analysis reveal ed that m ost of the system inefficiency is associated with the gasification process and subs equent tar reform ing step. For the biochem ical process, the steam generation from residue co mbustion, providing the requisite heating for the conventional pretreatment and alcohol distillati on processes, was shown to dom inate the exergy loss. An overall energy balance with dif ferent potential distillation energy requirem ents shows that as much as 30% of the biom ass energy content may be available in the f uture as a feedstock for thermochemical production of liquid fuels. 3This page left intentionally blank.

show abstract

Section: Soaking In Aqueous Ammonia (Saa) Pretreatmentmentioning

confidence: 99%

Section: Soaking In Aqueous Ammonia (Saa) Pretreatmentmentioning

confidence: 99%

Development of efficient, integrated cellulosic biorefineries : LDRD final report.

Teh¹,

Hecht²,

Shaddix³

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Co-cultures or microbial consortia may also be utilized in the CBP systems as the third methodology. Brandon et al 2011Kang et al, 2010Kim et al, 2008Geddes et al, 2011Nieves et al, 2011Mullinnix, 2014Yang et al, 2014Jin et al, 2014 Jin et al 2012aOhgren et al 2006Wang et al, 2014aYasuda et al, 2014Zhu et al, 2014Fonseca et al, 2011Teixeira et al, 1999Jin et al, 2010Tang et al, 2011Zhang (J) et al, 2009Kim and Lee, 2005Zhang et al, 2012bYu et al, 2014Moreno et al, 2013Erdei et al, 2013aBallesteros et al, 2013Geddes et al, 2013Turhan et al, 2014Lan et al, 2013Hargreaves et al, 2013Alvira et al, 2011Olofsson et al, 2010a . In co-culture systems, saccharolytic and ethanologenic microorganisms are co-cultured to enhance efficient saccharification and fermentation in one pot.…”

Section: Strategies To Design Ideal Microorganisms For Cbpmentioning

confidence: 99%

Advances in consolidated bioprocessing systems for bioethanol and butanol production from biomass: a comprehensive review

2015

View full text Add to dashboard Cite

HIGHLIGHTS Various CBP strategies have been discussed. Recently, lignocellulosic biomass as the most abundant renewable resource has been widely considered for bioalcohols production. However, the complex structure of lignocelluloses requires a multi-step process which is costly and time consuming. Although, several bioprocessing approaches have been developed for pretreatment, saccharification and fermentation, bioalcohols production from lignocelluloses is still limited because of the economic infeasibility of these technologies. This cost constraint could be overcome by designing and constructing robust cellulolytic and bioalcohols producing microbes and by using them in a consolidated bioprocessing (CBP) system. This paper comprehensively reviews potentials, recent advances and challenges faced in CBP systems for efficient bioalcohols (ethanol and butanol) production from lignocellulosic and starchy biomass. The CBP strategies include using native single strains with cellulytic and alcohol production activities, microbial co-cultures containing both cellulytic and ethanologenic microorganisms, and genetic engineering of cellulytic microorganisms to be alcohol-producing or alcohol producing microorganisms to be cellulytic. Moreover, high-throughput techniques, such as metagenomics, metatranscriptomics, next generation sequencing and synthetic biology developed to explore novel microorganisms and powerful enzymes with high activity, thermostability and pH stability are also discussed. Currently, the CBP technology is in its infant stage, and ideal microorganisms and/or conditions at industrial scale are yet to be introduced. So, it is essential to bring into attention all barriers faced and take advantage of all the experiences gained to achieve a high-yield and low-cost CBP process.

show abstract

“…The pretreatment conditions used in this work were based on previous work with minor revision (Kim et al 2008;Ko et al 2009). These conditions were selected because of their very good delignification ability.…”

Section: Aqueous Ammonia Pretreatmentmentioning

confidence: 99%

Comparison of the Delignifiability and Hydrolysability of Wheat Straw and Corn Stover in Aqueous Ammonia Pretreatment

Jia¹,

Sun²,

Ge³

et al. 2013

BioResources

View full text Add to dashboard Cite

The impact of an aqueous ammonia pretreatment on the structural properties, delignifiability, and hydrolysability of wheat straw and corn stover was investigated. The results showed that the aqueous ammonia pretreatment had an excellent delignification ability and that the corn stover exhibited higher susceptibility to an aqueous ammonia attack than wheat straw. In total, 35.6% and 70.0% of the lignin in wheat straw and corn stover were removed, respectively, by the aqueous ammonia pretreatment at 75 ºC with 21% ammonia and a solid:liquid ratio of 1:10 for 20 h. Both lignin and polysaccharides in the corn stover exhibited higher susceptibility to aqueous ammonia than those in wheat straw. In addition, the hydrolysability of corn stover was more susceptible to aqueous ammonia than it was to wheat straw. A chemical structure analysis of different substrates showed that the aqueous ammonia pretreatment removed lignin, broke ester bonds between lignin and hemicelluloses, increased the specific surface area and crystallinity index, and, finally, enhanced the hydrolysis yield.

show abstract

Bioethanol production from barley hull using SAA (soaking in aqueous ammonia) pretreatment

Cited by 271 publications

References 13 publications

Development of efficient, integrated cellulosic biorefineries : LDRD final report.

Development of efficient, integrated cellulosic biorefineries : LDRD final report.

Advances in consolidated bioprocessing systems for bioethanol and butanol production from biomass: a comprehensive review

Comparison of the Delignifiability and Hydrolysability of Wheat Straw and Corn Stover in Aqueous Ammonia Pretreatment

Contact Info

Product

Resources

About