Microwave assisted biodiesel production from Jatropha curcas L. seed by two-step in situ process: Optimization using response surface methodology

Hamidreza Jaliliannosrati, Nor Aishah Saidina Amin, Amin Talebian-Kiakalaieh, Iman Noshadi

Research output: Contribution to journalArticlepeer-review

79 Scopus citations

Abstract

The synthesis of fatty acid ethyl esters (FAEEs) by a two-step in situ (reactive) esterification/transesterification from Jatropha curcas L. (JCL) seeds using microwave system has been investigated. Free fatty acid was reduced from 14% to less than 1% in the first step using H2SO4 as acid catalyst after 35min of microwave irradiation heating. The organic phase in the first step was subjected to a second reaction by adding 5N KOH in ethanol as the basic catalyst. Response surface methodology (RSM) based on central composite design (CCD) was utilized to design the experiments and analyze the influence of process variables (particles seed size, time of irradiation, agitation speed and catalyst loading) on conversion of triglycerides (TGs) in the second step. The highest triglycerides conversion to fatty acid ethyl esters (FAEEs) was 97.29% at the optimum conditions:<0.5mm seed size, 12.21min irradiation time, 8.15ml KOH catalyst loading and 331.52rpm agitation speed in the 110W microwave power system.

Original languageEnglish (US)
Pages (from-to)565-573
Number of pages9
JournalBioresource Technology
Volume136
DOIs
StatePublished - May 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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