Immobilized lipase-catalyzed transesterification of Jatropha curcas oil: Optimization and modeling

Zarei, Alireza; Amin, Nor Aishah Saidina; Talebian‐Kiakalaieh, Amin; Zain, Nor Azimah Mohd

doi:10.1016/j.jtice.2013.05.015

Cited by 52 publications

(25 citation statements)

References 43 publications

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“…The transesterification process is catalyzed by lipases such as Candida antarctica, Candida rugasa, Pseudomonas cepacia, immobilized lipase (Lipozyme RMIM), Pseudomonas sp., and Rhizomucor miehei (Kumari et al, 2007;Wang et al, 2011;Zarei et al, 2014). In recent work (Shah et al, 2004), three different lipases (Chromobacterium viscosum, Candida rugosa, and Porcine pancreas) were screened for a transesterification reaction of jatropha oil in a solventfree system to produce biodiesel; only lipase from Chromobacterium viscosum was found to give appreciable yield.…”

Section: Biodiesel Via Transesterification From Non-edible Vegetable mentioning

confidence: 99%

Biodiesel production from non-edible plant oils

Demırbas

Bafail

Ahmad

et al. 2016

Energy Exploration & Exploitation

256

126

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Biodiesel is an alternative to petroleum-based fuels derived from a variety of feedstocks, including vegetable oils, animal fats, and waste cooking oil. At present, biodiesel is mainly produced from conventionally grown edible oils such as soybean, rapeseed, sunflower, and palm. The cost of biodiesel is the main obstacle to commercialization of the product. Biodiesel produced from edible oils is currently not economically feasible. On the other hand, extensive use of edible oils for biodiesel production may lead to food crisis. These problems can be solved by using lowcost feedstocks such as non-edible oils and waste cooking oils for biodiesel production. This paper reviews numerous options of non-edible oils as the substantial feedstocks, biodiesel processing, and effect of different parameters on production of biodiesel.

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Section: Biodiesel Via Transesterification From Non-edible Vegetable mentioning

confidence: 99%

Biodiesel production from non-edible plant oils

Demırbas

Bafail

Ahmad

et al. 2016

Energy Exploration & Exploitation

256

126

View full text Add to dashboard Cite

show abstract

“…For example, jatropha oil (JO) has received much attention in this respect [16][17][18][19]. Jatropha curcas is an inedible plant, that can grow in poor environments.…”

Section: Introductionmentioning

confidence: 99%

Esterification of Jatropha Oil with Isopropanol via Ultrasonic Irradiation

et al. 2018

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Abstract:The reduction of high acid value (AV) of inedible jatropha oil (JO) by esterification with isopropanol (IPA), which is a common alcohol solvent waste in Taiwan's high-tech industry, was studied. The decrease of AV is beneficial for the subsequent transesterification to produce JO biodiesel (i.e., biodiesel of fatty acid isopropyl ester (FAIE)). Acid catalyst (H 2 SO 4 ) and a novel mixing/emulsion technique using ultrasound irradiation (UI) were applied to promote and facilitate the esterification process. The results showed that increased IPA/oil molar ratio (M IOE ) can significantly reduce the AV, kinematic viscosity (KV), density (ρ LO ), and water content (M W ) of esterified JO, while also providing the benefit of enhancing the yield (Y F ) of biodiesel of FAIE. For example, with M IOE = 5 at esterification temperature (T E ) = 394.2 K (393.8-394.7 K), a reduction of AV of 99.25% with Y F of 67.15% can be achieved. Free fatty acid (FFA) was reduced from 18.06 wt.% to 0.14 wt.%, indicating 17.92 wt.% out of 18.06 wt.% of FFA was esterified to FAIE. As a result, among the Y F of 67.15%, 49.23% (= 67.15 wt.% deducting 17.92 wt.%) was contributed by the transesterification of triglycerides. By esterification of high FFA-containing raw JO with acid catalyst, one can not only avoid saponification, but also reduce the loading of the subsequent alkali-catalyzed transesterification. Moreover, increasing T E from 394.2 to 454.4 K further reduced AV (from 0.27 to 0.084 mg KOH/g) and M W (from 0.27 to 0.043 wt.%), but, on the other hand, it increased KV (from 14.62 to 25.2 mm 2 /s) and ρ LO (from 901.6 to 913.3 kg/m 3 ), while it decreased Y F (from 67.15 to 25.84%). In sum, IPA was successfully used as a replacement for methanol in the esterification of JO while UI provided mixing/emulsion along with heating resulting from cavitation for the system.

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“…Lipases could be utilized for the production since there is no production of soap, can be performed under milder conditions, ecofriendly and FAME purification is easier than in conventional techniques (Zarei et al, 2014;Adachi et al, 2013). Lipases could be easily activated in the presence of oil water interface and has the capacity to maintain the catalytic activity in non-aqueous, biphasic systems and micellar solutions (Antczak et al, 2009).…”

Section: Introductionmentioning

confidence: 99%