Biodiesel production from used cooking oil by two-step heterogeneous catalyzed process

Srilatha, K.; Devi, B.L.A. Prabhavathi; Lingaiah, N.; Prasad, R. B. N.; Prasad, P. S. Sai

doi:10.1016/j.biortech.2012.04.098

Cited by 48 publications

(20 citation statements)

References 35 publications

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“…Thus it is evident that to obtain higher conversion, excess of ethanol was effective to a certain degree. This is in agreement with the work of Srilatha et al [27]. They observed the effect of methanol to oil molar ratio on the ester yield to be highly significant using ZnO/Na-Y catalyst at a reaction temperature of 65 o C. They also reported that an increase in the ratio of methanol to oil increases the ester yield as transesterification generally requires large excess of methanol to shift the equilibrium towards products.…”

Section: E E E Effects Of Ethanol To Ffects Of Ethanol To Ffects Of Esupporting

confidence: 81%

“…Srilatha et al [27] observed that increase in reaction temperature accelerates the reaction towards the ester formation in biodiesel production from used cooking oil by two-step heterogeneous catalysed process using methanol as solvent and ZnO/Na-Y zeolite as catalyst. The effect of catalyst loading on the yield of biodiesel is shown in Figure 4, alongside temperature.…”

Section: Effects Of Temperaturementioning

confidence: 99%

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SYNTHESIS OF FATTY ACID ETHYL ESTER FROM CHICKEN FAT USING ZnO/SiO2 HETEROGENEOUS CATALYST

Olutoye¹,

Akpan²,

Salihu³

2015

Nig. J. Tech.

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ABSTRACT ABSTRACTThe The The The synthesis of synthesis of synthesis of synthesis of fatty acid ethyl ester from chicken fat waste using ZnO/SiO fatty acid ethyl ester from chicken fat waste using ZnO/SiO fatty acid ethyl ester from chicken fat waste using ZnO/SiO fatty acid ethyl ester from chicken fat waste using ZnO/SiO2 2 2 2 heterogeneous catalyst was carried heterogeneous catalyst was carried heterogeneous catalyst was carried heterogeneous catalyst was carried out using t out using t out using t out using two wo wo wo----step procedures of acid pretreatment by esterification and transesterification of the pretreated oil. step procedures of acid pretreatment by esterification and transesterification of the pretreated oil. step procedures of acid pretreatment by esterification and transesterification of the pretreated oil. step procedures of acid pretreatment by esterification and transesterification of the pretreated oil. The first step reduces the high free fatty a The first step reduces the high free fatty a The first step reduces the high free fatty a The first step reduces the high free fatty acid in the oil to an acceptable level for transesterification using cid in the oil to an acceptable level for transesterification using cid in the oil to an acceptable level for transesterification using cid in the oil to an acceptable level for transesterification using concentrated sulphuric acid at a temperature of 60 concentrated sulphuric acid at a temperature of 60 concentrated sulphuric acid at a temperature of 60 concentrated sulphuric acid at a temperature of 60 o o o o C C C C during 1 h of reaction time. The second step was during 1 h of reaction time. The second step was during 1 h of reaction time. The second step was during 1 h of reaction time. The second step was transesterification of the preheated oil using silica promoted zinc oxide as heteroge transesterification of the preheated oil using silica promoted zinc oxide as heteroge transesterification of the preheated oil using silica promoted zinc oxide as heteroge transesterification of the preheated oil using silica promoted zinc oxide as heterogeneous catalyst. A three level, neous catalyst. A three level, neous catalyst. A three level, neous catalyst. A three level, four factorial box behnken design (BBD) of response surface methodology was used whereby the four factorial box behnken design (BBD) of response surface methodology was used whereby the four factorial box behnken design (BBD) of response surface methodology was used whereby the four factorial box behnken design (BBD) of response surface methodology was used whereby the biodiesel yield biodiesel yield biodiesel yield biodiesel yield obtained in the range of 56 obtained in the range of 56 obtained in the range of 56 obtained in the range of 56−88%and a second order quadratic polynomial regression model that established the −88%and a second order quadratic polynomial regression model that established the −88%and a second order quadratic polynomial regression model t...

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Section: E E E Effects Of Ethanol To Ffects Of Ethanol To Ffects Of Esupporting

confidence: 81%

Section: Effects Of Temperaturementioning

confidence: 99%

SYNTHESIS OF FATTY ACID ETHYL ESTER FROM CHICKEN FAT USING ZnO/SiO2 HETEROGENEOUS CATALYST

Olutoye¹,

Akpan²,

Salihu³

2015

Nig. J. Tech.

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“…Replacing homogeneous catalysts with the heterogeneous ones for the two-steps biodiesel production could gain future relevance as catalyst could be reutilized. Srilatha et al [154] reported a study focused on a two-steps biodiesel production from used cooking oil in which 25 wt% TPA/ Nb 2 O 5 catalyst was used for esterification of FFA, while, 20 wt% ZnO/NaY zeolite catalyst was used to transesterify the remaining feedstock. Shibasaki-Kitakawa et al [155] studied biodiesel production from jatropha oil in a bench-scale series of reactors where the first bed-reactor packed with an cation-exchange Diaion PA306S resins was employed for esterification of FFA, and the second reactor packed with an anion-exchange Diaion PK208LH resins was used to assist transesterification of TAGs.…”

Section: Heterogeneous Bi-functional Catalysts or Two-steps Alcoholysmentioning

confidence: 99%

A review on recent advancement in catalytic materials for biodiesel production

Avhad

Marchetti

2015

Renewable and Sustainable Energy Reviews

339

133

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“…1,2 However, biodiesel has still not been commercialized, since the most common commercial process uses high cost rened vegetable oil as a raw material. 1,2 However, biodiesel has still not been commercialized, since the most common commercial process uses high cost rened vegetable oil as a raw material.…”

Section: Introductionmentioning

confidence: 99%

Efficient biodiesel production from waste cooking oil using p-toluenesulfonic acid doped polyaniline as a catalyst

Niu

Kong

2015

RSC Adv.

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Biodiesel production from used cooking oil by two-step heterogeneous catalyzed process

Cited by 48 publications

References 35 publications

SYNTHESIS OF FATTY ACID ETHYL ESTER FROM CHICKEN FAT USING ZnO/SiO2 HETEROGENEOUS CATALYST

SYNTHESIS OF FATTY ACID ETHYL ESTER FROM CHICKEN FAT USING ZnO/SiO2 HETEROGENEOUS CATALYST

A review on recent advancement in catalytic materials for biodiesel production

Efficient biodiesel production from waste cooking oil using p-toluenesulfonic acid doped polyaniline as a catalyst

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