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Continuous production of biodiesel using supercritical fluids: A comparative study between methanol and ethanol

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Title: Continuous production of biodiesel using supercritical fluids: A comparative study between methanol and ethanol
Authors: Santana, Aline1, Maçaira, José2, Larrayoz, M. Angeles1 aline.santana@upc.edu
Source: Fuel Processing Technology. Oct2012, Vol. 102, p110-115. 6p.
Subjects: Biodiesel fuels, Supercritical fluids, Comparative studies, Methanol, Ethanol, Catalysis, Gas chromatography, Chemical reactors, Carbon dioxide
Abstract: Abstract: Biodiesel was produced from vegetable oil (triglycerides) by transesterification with supercritical ethanol and carbon dioxide as cosolvent in the presence of solid acid catalyst. The objective of this work was to evaluate transesterification kinetics for biodiesel production from vegetable oil under supercritical conditions. Experimental investigation was carried out with vegetable oil and ethanol at molar ratio of 1:25, temperature between 150 and 200°C, reaction time from 2 to 10min and pressure around 200bar in a continuous reactor. The biodiesel products were analyzed by gas chromatography. The effects of methanol to ethanol to temperature and reaction time towards biodiesel yield are discussed in detail. From this study, it was found than an optimum biodiesel yield of 80% can be attained at a relatively short reaction time around 6min using supercritical condition with ethanol and carbon dioxide as cosolvent. [Copyright &y& Elsevier]
Copyright of Fuel Processing Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 77338374
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Continuous production of biodiesel using supercritical fluids: A comparative study between methanol and ethanol
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  Data: <searchLink fieldCode="AR" term="%22Santana%2C+Aline%22">Santana, Aline</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Maçaira%2C+José%22">Maçaira, José</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Larrayoz%2C+M%2E+Angeles%22">Larrayoz, M. Angeles</searchLink><relatesTo>1</relatesTo><i> aline.santana@upc.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Fuel+Processing+Technology%22">Fuel Processing Technology</searchLink>. Oct2012, Vol. 102, p110-115. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Biodiesel+fuels%22">Biodiesel fuels</searchLink><br /><searchLink fieldCode="DE" term="%22Supercritical+fluids%22">Supercritical fluids</searchLink><br /><searchLink fieldCode="DE" term="%22Comparative+studies%22">Comparative studies</searchLink><br /><searchLink fieldCode="DE" term="%22Methanol%22">Methanol</searchLink><br /><searchLink fieldCode="DE" term="%22Ethanol%22">Ethanol</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysis%22">Catalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+chromatography%22">Gas chromatography</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+reactors%22">Chemical reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+dioxide%22">Carbon dioxide</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: Biodiesel was produced from vegetable oil (triglycerides) by transesterification with supercritical ethanol and carbon dioxide as cosolvent in the presence of solid acid catalyst. The objective of this work was to evaluate transesterification kinetics for biodiesel production from vegetable oil under supercritical conditions. Experimental investigation was carried out with vegetable oil and ethanol at molar ratio of 1:25, temperature between 150 and 200°C, reaction time from 2 to 10min and pressure around 200bar in a continuous reactor. The biodiesel products were analyzed by gas chromatography. The effects of methanol to ethanol to temperature and reaction time towards biodiesel yield are discussed in detail. From this study, it was found than an optimum biodiesel yield of 80% can be attained at a relatively short reaction time around 6min using supercritical condition with ethanol and carbon dioxide as cosolvent. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Fuel Processing Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.fuproc.2012.04.014
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 6
        StartPage: 110
    Subjects:
      – SubjectFull: Biodiesel fuels
        Type: general
      – SubjectFull: Supercritical fluids
        Type: general
      – SubjectFull: Comparative studies
        Type: general
      – SubjectFull: Methanol
        Type: general
      – SubjectFull: Ethanol
        Type: general
      – SubjectFull: Catalysis
        Type: general
      – SubjectFull: Gas chromatography
        Type: general
      – SubjectFull: Chemical reactors
        Type: general
      – SubjectFull: Carbon dioxide
        Type: general
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      – TitleFull: Continuous production of biodiesel using supercritical fluids: A comparative study between methanol and ethanol
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            NameFull: Santana, Aline
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            NameFull: Maçaira, José
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            NameFull: Larrayoz, M. Angeles
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            – D: 01
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              Text: Oct2012
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