Investigation of the Refining Step of Biodiesel Production

Karaosmanoğlu, Fìlìz; Cıǧızoǧlu, K. Barış; Tüter, and Melek; Ertekin, Serap

doi:10.1021/ef9502214

Cited by 164 publications

(107 citation statements)

References 19 publications

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“…In order to prevent the formation of such an emulsion in the conventional water-washing practice a large amount of water must be used. Karaosmanoglu et al (1996) concluded that a minimum of 3-5 grams of water per gram of biodiesel at 50 °C were needed to efficiently remove the impurities of the fuel (3000-5000 litres of water per Ton of biodiesel). These numbers should be considered typical of once-through water-washing operations but are not representative of closed-loop water washing schemes.…”

Section: Advantages Of Adsorption In Biodiesel Refiningmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption in Biodiesel Refining - A Review

Vera¹,

Busto²,

Yori³

et al. 2011

Biodiesel - Feedstocks and Processing Technologies

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Section: Advantages Of Adsorption In Biodiesel Refiningmentioning

confidence: 99%

“…Some reports on post-reactor biodiesel refining have dealt with classical and simple techniques of purification, e.g. water washing (Karaosmanoglu et al, 1996). Others have indicated that adsorption technologies are particularly suited for the refining of biodiesel Mazzieri et al, 2008;.…”

Section: Introductionmentioning

confidence: 99%

Adsorption in Biodiesel Refining - A Review

Vera¹,

Busto²,

Yori³

et al. 2011

Biodiesel - Feedstocks and Processing Technologies

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“…16 The conventional "wet" methods of purification involving water-washing can be replaced by "dry" purification with adsorbents or ion exchange resins. 13,17 Moreover, the solid residue obtained by this purification has to be disposed of to landfill or other applications (compost, potential animal feed additive and potential fuel). 15 The inorganic matrix Magnesol® is a synthetic adsorbent composed of magnesium silicate and anhydrous sodium sulfate.…”

Section: Introductionmentioning

confidence: 99%

“…13,17 Moreover, the solid residue obtained by this purification has to be disposed of to landfill or other applications (compost, potential animal feed additive and potential fuel).…”

mentioning

confidence: 99%

Dry washing in biodiesel purification: a comparative study of adsorbents

Faccini¹,

Cunha²,

Moraes³

et al. 2011

J. Braz. Chem. Soc.

132

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O objetivo deste trabalho é comparar a eficiência de diferentes adsorventes na purificação de biodiesel produzido por transesterificação alcalina do óleo de soja (metanol/KOH). As metodologias propostas foram baseadas na utilização de Magnesol ® , sílica, Amberlite BD10 DRY ® e Purolite PD 206 ® como adsorventes e foram desenvolvidas por adsorção a 65 ºC. A eficiência de cada adsorvente foi medida através do teor residual de potássio, álcool, água e sabão, dissolvidos no biodiesel purificado. Como resultado, observamos que Magnesol ® e sílica apresentaram melhores propriedades de adsorção que Amberlite BD10 DRY® e Purolite PD 206 ® , especialmente para remover sabão, glicerina livre e ligada e potássio. Em comparação com a lavagem ácida convencional, estas matrizes foram consideradas adequadas para a remoção de espécies contaminantes inorgânicas e orgânicas do biodiesel. Os principais resultados encontrados para estes dois adsorventes (Magnesol ® 1% e sílica 2%) foram valores abaixo de 0,17 mg KOH g -1 de acidez, 1 mg kg -1 de potássio, 61 ppm de sabão, 500 mg kg -1 de água, 0,22% de metanol, 0,30% de glicerina livre e 0,03% de glicerina ligada.The purpose of this work is to compare the efficiency of different adsorbents in the purification of biodiesel produced by alkaline transesterification of soybean oil (Methanol/KOH). The proposed methodologies were based on the use of Magnesol ® , silica, Amberlite BD10 DRY ® and Purolite PD 206 ® as adsorbents and were developed by adsorption at 65 ºC. The response of each adsorbent was measured through the residual potassium, alcohol, water and soaps dissolved in the purified biodiesel. As a result, we observe that Magnesol ® and silica showed better adsorption properties than Amberlite BD10 DRY ® and Purolite PD 206 ® , especially for removing soap, free and bonded glycerol and potassium. In comparison to the conventional acid water washing, these matrices were found to be equally appropriate for the removal of inorganic and organic contaminant species from biodiesel. The main results found for these two adsorbents (Magnesol ® 1% and silica 2%) were values below 0.17 mg KOH g -1 for acid number, 1 mg kg -1 of K, 61 ppm of soap, 500 mg kg -1 of water, 0.22% of methanol and 0.03% of free glycerol. IntroductionBiodiesel is a diesel fuel substitute obtained mainly by basic catalytic transesterification of oils and fats, and it is composed by fatty acid mono-alkyl esters that are produced from the reaction of low-acid-number vegetable oils with an alcohol in the presence of a basic catalyst. [1][2][3] Biodiesel is currently produced by the base-catalyzed transmethylation of triglycerides, producing fatty acids methyl esters (FAME). 4,5 At the end of the reaction, the Faccini et al. 559 Vol. 22, No. 3, 2011 glycerol rich-phase is separated from the methyl ester layer by decantation.Methyl esters usually contain contaminant materials that are detrimental to the quality of the fuel, and must be eliminated from the product. Removal of glycerol and glycerides from biodies...

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“…60 o C for methanol) were recommended (Noureddini and Zhu, 1997). After the transesterification reaction, different separation techniques to purify the biodiesel product from the other products were investigated by Karaosmanoğlu et al (1996). They concluded that the use of hot water at 50 o C in washing was the best way to obtain high purity and yield (86%) of the biodiesel product.…”

Section: Introductionmentioning

confidence: 99%

Production of biodiesel by transesterification of refined soybean oil

Aransiola¹,

Betiku²,

Layokun³

et al. 2010

International Journal of Biological and Chemical Sciences

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This study focused on the production of biodiesel via transesterification of refined soybean oil obtained locally. Sodium hydroxide was used as the alkali catalyst and methanol (as alcohol) was used in the transesterification process due to its low cost. The methanol-to-oil molar ratio was maintained at 6:1. The effect of reaction temperature with time and the catalyst loading were studied. The reaction temperature and the catalyst loading were varied at 30, 40, 50, 60 and 70 o C; and at 0.5 and 1.0% weight of oil, respectively. After transesterification of the soybean oil, the fatty acid methyl esters [FAMEs (biodiesel)] conversion was found to rise with an increase in the catalyst loading and also with the reaction temperature but no significant difference (P > 0.05) was found between the temperatures of 60 o C and 70 o C. The optimum methyl esters conversion of 97.89% was achieved at 60 o C for 3 h with 1% (w/w) catalyst. The viscosity (at 40 o C), density, cloud point, pour point, flash point and acid number were 3.40 cSt, 0.86 g/ml, -1 o C, -7 o C, 175 o C and 0.19, respectively. This optimum methyl esters conversion obtained met ASTM standard of D-6751. Therefore, soybean oil has been shown in this study as a good candidate for biodiesel production and the data acquired can be scaled up for large scale production.

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Investigation of the Refining Step of Biodiesel Production

Cited by 164 publications

References 19 publications

Adsorption in Biodiesel Refining - A Review

Adsorption in Biodiesel Refining - A Review

Dry washing in biodiesel purification: a comparative study of adsorbents

Production of biodiesel by transesterification of refined soybean oil

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