Microwave-assisted catalytic transesterification of camelina sativa oil

Prafulla D. Patil, Veera Gnaneswar Gude, Lucy Mar Camacho, Shuguang Deng

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Catalytic conversion of Camelina Sativa oil to biodiesel through both conventional heating and microwave radiation was investigated. Three different types of catalysts: homogeneous catalysts (NaOH and KOH), heterogeneous metal oxide catalysts (BaO and SrO), and sol-gel derived catalysts (BaCl 2/AA and SrCl2/AA) were evaluated for their efficacy in biodiesel production. The following conditions were obtained for the catalysts based on the maximum biodiesel yield: potassium hydroxide/methanol to oil ratio of 1:9, catalyst concentration of 1% (w/w), and reaction time of 60 s; sodium hydroxide/methanol to oil ratio of 1:9, catalyst concentration of 0.5 wt %, and reaction time of 60 s; barium oxide/methanol to oil ratio of 1:9, catalyst concentration of 1.5% (w/w), and reaction time of 4 min; strontium oxide/methanol to oil ratio of 1:9, catalyst concentration of 2 wt%, and reaction time of 4 min. In the case of sol-gel derived catalysts, different catalyst loading rates in the range of 1-10 mmol/g were evaluated. Low biodiesel yields of 10-25% on the sol-gel derived catalysts were observed. On the basis of energy consumptions in the transesterification processes with both conventional heating and microwave-heating methods evaluated in this study, it was estimated that the microwave-heating method consumes less than 10% of the energy to achieve the same yield as the conventional heating method. The fuel properties of camelina biodiesel produced were compared with those of the regular diesel and found to be conforming to the American Society for Testing and Materials (ASTM) standards. Copyrigh

Original languageEnglish (US)
Pages (from-to)1298-1304
Number of pages7
JournalEnergy and Fuels
Volume24
Issue number2
DOIs
StatePublished - Feb 18 2010
Externally publishedYes

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Transesterification
Oils
Microwaves
Catalysts
Biofuels
Biodiesel
Methanol
Sol-gels
Microwave heating
Heating
Oxides
Potassium hydroxide
Sodium Hydroxide
Strontium
Barium
Energy utilization
Metals
Sodium

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Microwave-assisted catalytic transesterification of camelina sativa oil. / Patil, Prafulla D.; Gude, Veera Gnaneswar; Camacho, Lucy Mar; Deng, Shuguang.

In: Energy and Fuels, Vol. 24, No. 2, 18.02.2010, p. 1298-1304.

Research output: Contribution to journalArticle

Patil, Prafulla D. ; Gude, Veera Gnaneswar ; Camacho, Lucy Mar ; Deng, Shuguang. / Microwave-assisted catalytic transesterification of camelina sativa oil. In: Energy and Fuels. 2010 ; Vol. 24, No. 2. pp. 1298-1304.
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