Optimal simultaneous production of i-butene and ethanol from switchgrass
Identifieur interne : 005152 ( Main/Exploration ); précédent : 005151; suivant : 005153Optimal simultaneous production of i-butene and ethanol from switchgrass
Auteurs : Mariano Martin [Espagne] ; Ignacio E. Grossmann [États-Unis]Source :
- Biomass & bioenergy [ 0961-9534 ] ; 2014.
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- Pascal (Inist)
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- topic : Production.
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Abstract
In this work, we propose the optimization of a flowsheet for the production of i-butene from switchgrass. A superstructure embedding a number of alternatives is proposed. Two technologies are considered for switchgrass pretreatment, dilute acid and ammonia fiber explosion (AFEX) so that the structure of the grass is broken down. Surface response models are used to predict the yield. Next, enzymatic hydrolysis follows any of the pretreatments to obtain fermentable sugars, mainly xylose and glucose. i-Butene is obtained by fermentation of the sugars. Next it is separated mainly from CO2 for which PSA or membrane separation are considered. However, xylose cannot be easily converted, and thus we also evaluate the possibility of using it to produce ethanol. The problem is formulated as an MINLP with simultaneous optimization and heat integration. Finally, an economic evaluation is performed. The most promising process involves the use of dilute acid pretreatment and membrane purification of the i-butene. However, the decision related to the production of i-butene alone or the simultaneous production of i-butene and ethanol depends on the prices for ethanol and for switchgrass.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Optimal simultaneous production of i-butene and ethanol from switchgrass</title><author><name sortKey="Martin, Mariano" sort="Martin, Mariano" uniqKey="Martin M" first="Mariano" last="Martin">Mariano Martin</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Chemical Engineering, University of Salamanca, Plz. Caídos 1-5</s1><s2>37008</s2><s3>ESP</s3><sZ>1 aut.</sZ></inist:fA14><country>Espagne</country><placeName><region nuts="2" type="communauté">Castille-et-León</region></placeName></affiliation></author><author><name sortKey="Grossmann, Ignacio E" sort="Grossmann, Ignacio E" uniqKey="Grossmann I" first="Ignacio E." last="Grossmann">Ignacio E. Grossmann</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Department of Chemical Engineering, Carnegie Mellon University</s1><s2>Pittsburgh, PA 15213</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Pittsburgh</settlement><region type="state">Pennsylvanie</region></placeName><orgName type="university">Université Carnegie-Mellon</orgName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">14-0071582</idno><date when="2014">2014</date><idno type="stanalyst">PASCAL 14-0071582 INIST</idno><idno type="RBID">Pascal:14-0071582</idno><idno type="wicri:Area/PascalFrancis/Corpus">000E28</idno><idno type="wicri:Area/PascalFrancis/Curation">003781</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000502</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000502</idno><idno type="wicri:doubleKey">0961-9534:2014:Martin M:optimal:simultaneous:production</idno><idno type="wicri:Area/Main/Merge">005425</idno><idno type="wicri:Area/Main/Curation">005152</idno><idno type="wicri:Area/Main/Exploration">005152</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Optimal simultaneous production of i-butene and ethanol from switchgrass</title><author><name sortKey="Martin, Mariano" sort="Martin, Mariano" uniqKey="Martin M" first="Mariano" last="Martin">Mariano Martin</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Chemical Engineering, University of Salamanca, Plz. Caídos 1-5</s1><s2>37008</s2><s3>ESP</s3><sZ>1 aut.</sZ></inist:fA14><country>Espagne</country><placeName><region nuts="2" type="communauté">Castille-et-León</region></placeName></affiliation></author><author><name sortKey="Grossmann, Ignacio E" sort="Grossmann, Ignacio E" uniqKey="Grossmann I" first="Ignacio E." last="Grossmann">Ignacio E. Grossmann</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Department of Chemical Engineering, Carnegie Mellon University</s1><s2>Pittsburgh, PA 15213</s2><s3>USA</s3><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Pittsburgh</settlement><region type="state">Pennsylvanie</region></placeName><orgName type="university">Université Carnegie-Mellon</orgName></affiliation></author></analytic><series><title level="j" type="main">Biomass & bioenergy</title><title level="j" type="abbreviated">Biomass bioenergy</title><idno type="ISSN">0961-9534</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Biomass & bioenergy</title><title level="j" type="abbreviated">Biomass bioenergy</title><idno type="ISSN">0961-9534</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alcoholic fermentation</term><term>Biofuel</term><term>Energy crop</term><term>Enzymatic digestion</term><term>Ethanol</term><term>Isobutene</term><term>Lignocellulosics</term><term>Mathematical model</term><term>Modeling</term><term>Optimization</term><term>Panicum virgatum</term><term>Pretreatment</term><term>Production</term><term>Theoretical study</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Production</term><term>Ethanol</term><term>Panicum virgatum</term><term>Plante énergétique</term><term>Isobutène</term><term>Biocarburant</term><term>Optimisation</term><term>Prétraitement</term><term>Dégradation enzymatique</term><term>Fermentation alcoolique</term><term>Modèle mathématique</term><term>Lignocellulose</term><term>Etude théorique</term><term>Modélisation</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Production</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">In this work, we propose the optimization of a flowsheet for the production of i-butene from switchgrass. A superstructure embedding a number of alternatives is proposed. Two technologies are considered for switchgrass pretreatment, dilute acid and ammonia fiber explosion (AFEX) so that the structure of the grass is broken down. Surface response models are used to predict the yield. Next, enzymatic hydrolysis follows any of the pretreatments to obtain fermentable sugars, mainly xylose and glucose. i-Butene is obtained by fermentation of the sugars. Next it is separated mainly from CO<sub>2</sub> for which PSA or membrane separation are considered. However, xylose cannot be easily converted, and thus we also evaluate the possibility of using it to produce ethanol. The problem is formulated as an MINLP with simultaneous optimization and heat integration. Finally, an economic evaluation is performed. The most promising process involves the use of dilute acid pretreatment and membrane purification of the i-butene. However, the decision related to the production of i-butene alone or the simultaneous production of i-butene and ethanol depends on the prices for ethanol and for switchgrass.</div></front></TEI><affiliations><list><country><li>Espagne</li><li>États-Unis</li></country><region><li>Castille-et-León</li><li>Pennsylvanie</li></region><settlement><li>Pittsburgh</li></settlement><orgName><li>Université Carnegie-Mellon</li></orgName></list><tree><country name="Espagne"><region name="Castille-et-León"><name sortKey="Martin, Mariano" sort="Martin, Mariano" uniqKey="Martin M" first="Mariano" last="Martin">Mariano Martin</name></region></country><country name="États-Unis"><region name="Pennsylvanie"><name sortKey="Grossmann, Ignacio E" sort="Grossmann, Ignacio E" uniqKey="Grossmann I" first="Ignacio E." last="Grossmann">Ignacio E. Grossmann</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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