Removal of non-structural components from poplar whole-tree chips to enhance hydrolysis and fermentation performance.
Identifieur interne : 000C97 ( Main/Exploration ); précédent : 000C96; suivant : 000C98Removal of non-structural components from poplar whole-tree chips to enhance hydrolysis and fermentation performance.
Auteurs : Hanna Hörhammer [États-Unis] ; Chang Dou [États-Unis] ; Rick Gustafson [États-Unis] ; Azra Suko [États-Unis] ; Renata Bura [États-Unis]Source :
- Biotechnology for biofuels [ 1754-6834 ] ; 2018.
Abstract
Background
Whole-tree chips will be a likely feedstock for future biorefineries because of their low cost. Non-structural components (NSC), however, represent a significant part of whole-tree chips. The NSC can account for more than 10% of whole-tree poplar mass when the trees are grown in short rotation cycles. The influence of NSC, however, on the production of fuels and chemicals is not well known. In this study, we assessed the impact of NSC removal from poplar whole-tree chips on pretreatment and enzymatic hydrolysis yields, overall sugar recovery, and fermentation yield. In addition, we evaluated the economics of preprocessing as a new unit operation in the biorefinery.
Results
Poplar whole-tree chips were preprocessed by neutral or acidic washing before steam pretreatment, enzymatic hydrolysis, and fermentation. Preprocessing of poplar reduced ash and extractives content as much as 70 and 50%, respectively. The overall sugar yield after pretreatment and hydrolysis was 18-22% higher when the biomass had been preprocessed, which was explained by higher sugar yields in liquid fraction and more efficient enzymatic hydrolysis of the solid fraction. The liquid fraction ethanol fermentation yield was 36-50% higher for the preprocessed biomass.
Conclusions
It appears that preprocessing reduced the buffering capacity of the biomass due to ash removal, and thereby improved the enzymatic hydrolysis. Removal of extractives during preprocessing improved the fermentation yield. The economic modeling shows that a preprocessing unit could have significant economic benefits in a biorefinery, where poplar whole-tree chips are used as bioconversion feedstock.
DOI: 10.1186/s13068-018-1219-4
PubMed: 30127852
PubMed Central: PMC6086995
Affiliations:
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Dou</name><affiliation wicri:level="2"><nlm:affiliation>Biofuels and Bioproducts Laboratory, School of Environmental and Forest Sciences, University of Washington, Box 352100, Seattle, WA 98195-2100 USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">Washington (État)</region></placeName><wicri:cityArea>Biofuels and Bioproducts Laboratory, School of Environmental and Forest Sciences, University of Washington, Box 352100, Seattle</wicri:cityArea></affiliation></author><author><name sortKey="Gustafson, Rick" sort="Gustafson, Rick" uniqKey="Gustafson R" first="Rick" last="Gustafson">Rick Gustafson</name><affiliation wicri:level="2"><nlm:affiliation>Biofuels and Bioproducts Laboratory, School of Environmental and Forest Sciences, University of Washington, Box 352100, Seattle, WA 98195-2100 USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">Washington 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wicri:level="2"><nlm:affiliation>Biofuels and Bioproducts Laboratory, School of Environmental and Forest Sciences, University of Washington, Box 352100, Seattle, WA 98195-2100 USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">Washington (État)</region></placeName><wicri:cityArea>Biofuels and Bioproducts Laboratory, School of Environmental and Forest Sciences, University of Washington, Box 352100, Seattle</wicri:cityArea></affiliation></author></analytic><series><title level="j">Biotechnology for biofuels</title><idno type="ISSN">1754-6834</idno><imprint><date when="2018" type="published">2018</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p><b>Background</b></p><p>Whole-tree chips will be a likely feedstock for future biorefineries because of their low cost. Non-structural components (NSC), however, represent a significant part of whole-tree chips. The NSC can account for more than 10% of whole-tree poplar mass when the trees are grown in short rotation cycles. The influence of NSC, however, on the production of fuels and chemicals is not well known. In this study, we assessed the impact of NSC removal from poplar whole-tree chips on pretreatment and enzymatic hydrolysis yields, overall sugar recovery, and fermentation yield. In addition, we evaluated the economics of preprocessing as a new unit operation in the biorefinery.</p></div><div type="abstract" xml:lang="en"><p><b>Results</b></p><p>Poplar whole-tree chips were preprocessed by neutral or acidic washing before steam pretreatment, enzymatic hydrolysis, and fermentation. Preprocessing of poplar reduced ash and extractives content as much as 70 and 50%, respectively. The overall sugar yield after pretreatment and hydrolysis was 18-22% higher when the biomass had been preprocessed, which was explained by higher sugar yields in liquid fraction and more efficient enzymatic hydrolysis of the solid fraction. The liquid fraction ethanol fermentation yield was 36-50% higher for the preprocessed biomass.</p></div><div type="abstract" xml:lang="en"><p><b>Conclusions</b></p><p>It appears that preprocessing reduced the buffering capacity of the biomass due to ash removal, and thereby improved the enzymatic hydrolysis. Removal of extractives during preprocessing improved the fermentation yield. The economic modeling shows that a preprocessing unit could have significant economic benefits in a biorefinery, where poplar whole-tree chips are used as bioconversion feedstock.</p></div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">30127852</PMID><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><ISSN IssnType="Print">1754-6834</ISSN><JournalIssue CitedMedium="Print"><Volume>11</Volume><PubDate><Year>2018</Year></PubDate></JournalIssue><Title>Biotechnology for biofuels</Title><ISOAbbreviation>Biotechnol Biofuels</ISOAbbreviation></Journal><ArticleTitle>Removal of non-structural components from poplar whole-tree chips to enhance hydrolysis and fermentation performance.</ArticleTitle><Pagination><MedlinePgn>222</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1186/s13068-018-1219-4</ELocationID><Abstract><AbstractText Label="Background" NlmCategory="UNASSIGNED">Whole-tree chips will be a likely feedstock for future biorefineries because of their low cost. Non-structural components (NSC), however, represent a significant part of whole-tree chips. The NSC can account for more than 10% of whole-tree poplar mass when the trees are grown in short rotation cycles. The influence of NSC, however, on the production of fuels and chemicals is not well known. In this study, we assessed the impact of NSC removal from poplar whole-tree chips on pretreatment and enzymatic hydrolysis yields, overall sugar recovery, and fermentation yield. In addition, we evaluated the economics of preprocessing as a new unit operation in the biorefinery.</AbstractText><AbstractText Label="Results" NlmCategory="UNASSIGNED">Poplar whole-tree chips were preprocessed by neutral or acidic washing before steam pretreatment, enzymatic hydrolysis, and fermentation. Preprocessing of poplar reduced ash and extractives content as much as 70 and 50%, respectively. The overall sugar yield after pretreatment and hydrolysis was 18-22% higher when the biomass had been preprocessed, which was explained by higher sugar yields in liquid fraction and more efficient enzymatic hydrolysis of the solid fraction. The liquid fraction ethanol fermentation yield was 36-50% higher for the preprocessed biomass.</AbstractText><AbstractText Label="Conclusions" NlmCategory="UNASSIGNED">It appears that preprocessing reduced the buffering capacity of the biomass due to ash removal, and thereby improved the enzymatic hydrolysis. Removal of extractives during preprocessing improved the fermentation yield. 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Source="GRID">grid.34477.33</Identifier></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bura</LastName><ForeName>Renata</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>Biofuels and Bioproducts Laboratory, School of Environmental and Forest Sciences, University of Washington, Box 352100, Seattle, WA 98195-2100 USA.</Affiliation><Identifier Source="ISNI">0000000122986657</Identifier><Identifier Source="GRID">grid.34477.33</Identifier></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2018</Year><Month>08</Month><Day>11</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Biotechnol Biofuels</MedlineTA><NlmUniqueID>101316935</NlmUniqueID><ISSNLinking>1754-6834</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Acidic wash</Keyword><Keyword MajorTopicYN="N">Economic assessment</Keyword><Keyword MajorTopicYN="N">Enzymatic hydrolysis</Keyword><Keyword MajorTopicYN="N">Fermentation</Keyword><Keyword MajorTopicYN="N">Neutral wash</Keyword><Keyword MajorTopicYN="N">Poplar</Keyword><Keyword MajorTopicYN="N">Preprocessing</Keyword><Keyword MajorTopicYN="N">Steam explosion</Keyword><Keyword MajorTopicYN="N">Whole-tree chips</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2018</Year><Month>05</Month><Day>12</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2018</Year><Month>07</Month><Day>28</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2018</Year><Month>8</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2018</Year><Month>8</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate 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IdType="pubmed">20685116</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Washington (État)</li></region></list><tree><country name="États-Unis"><region name="Washington (État)"><name sortKey="Horhammer, Hanna" sort="Horhammer, Hanna" uniqKey="Horhammer H" first="Hanna" last="Hörhammer">Hanna Hörhammer</name></region><name sortKey="Bura, Renata" sort="Bura, Renata" uniqKey="Bura R" first="Renata" last="Bura">Renata Bura</name><name sortKey="Dou, Chang" sort="Dou, Chang" uniqKey="Dou C" first="Chang" last="Dou">Chang Dou</name><name sortKey="Gustafson, Rick" sort="Gustafson, Rick" uniqKey="Gustafson R" first="Rick" last="Gustafson">Rick Gustafson</name><name sortKey="Suko, Azra" sort="Suko, Azra" uniqKey="Suko A" first="Azra" last="Suko">Azra Suko</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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