Continuous biosynthesis of biodiesel from waste cooking palm oil in a packed bed reactor: Optimization using response surface methodology (RSM) and mass transfer studies

Halim, Siti Fatimah Abdul; Kamaruddin, Azlina Harun; Fernando, W.J.N.

doi:10.1016/j.biortech.2008.07.031

Cited by 270 publications

(133 citation statements)

References 24 publications

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“…A fivelevel, three-factor central composite rotatable design requiring a total of 20 experiments was adopted in this work (Jeong et al, 2007;Halim et al, 2009). The ratio of methanol to vegetable oil (A) in the range of 30-50% v/v, percent of catalyst loading (B) in the range of 0.5-1.0 wt%, and reaction time (C) in the range of 60-120 min were selected as parameters.…”

Section: Experimental Designmentioning

confidence: 99%

Conversion of <em>Oleum papaveris seminis</em> oil into methyl esters via esterification process: Optimization and kinetic study

Syam¹,

Rashid²,

Yunus³

et al. 2016

Grasas y Aceites

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SUMMARY:This paper presents an acid pre-treatment process and a kinetic study for the esterification reaction of Oleum papaveris seminis oil with methanol in the presence of amberlite 120 as a solid catalyst to convert the oil into methyl esters. Response surface methodology (RSM) was applied to optimize the reaction parameters, i.e. reaction time, percentage of the catalyst and volume ratio of methanol to oil. The results revealed that 0.87% w/w of catalyst concentration and 44.70% v/v of methanol to oil ratio provided final free fatty acid (FFA) contents of 0.60% w/w at 102.40 min of reaction time. It proved that the contribution of Amberlite 120 in the esterification of FFA was highly significant. The kinetics of the esterification in Oleum papaveris seminis oil with methanol in the presence of the amberlite 120 catalyst were also investigated to establish the reaction rate constant (k), reaction order, and activation energy. The study was performed under the optimized parameters at three reaction temperatures (50, 55, and 60 °C). The value of k was in the range of 0.013 to 0.027 min Optimización y estudio cinético. En este artículo se presenta un proceso de pre-tratamiento con ácido, y un estudio cinético de la reacción de esterificación. Se utiliza Oleum papaveris seminis con metanol en presencia de Amberlite 120 como catalizador sólido para la formación de los ésteres metílicos. Se aplicó una metodología de superficie de respuesta (RSM) para optimizar los parámetros de la reacción; es decir, tiempo de reacción, porcentaje de la relación de catalizador y volumen de metanol -aceite. Los resultados mostraron que el 0,87% w/w de la concentración de catalizador y 44,70% v/v de metanol en relación al aceite dan lugar a un contenido final de ácidos grasos libres (FFA) de 0,60% w/w en 102,40 min de tiempo de reacción. Se demostró que la contribución de Amberlite 120 en la esterificación de los FFA fue altamente significativa. La cinética de la esterificación del Oleum papaveris Seminis con metanol en presencia del catalizador Amberlite 120 también se investigó para establecer la constante de velocidad de reacción (k), orden de la reacción, y la energía de activación. El estudio se realizó bajo los parámetros optimizados a tres temperaturas de reacción (50, 55, y 60 °C). El valor de la constante k fué del rango de 0.013 a 0,027 min −1 . El modelo de cinética de primer orden fue el adecuado para esta esterificación FFA irreversible con una energía de activación de aproximadamente 60,9 KJ mol −1 .

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Section: Experimental Designmentioning

confidence: 99%

Conversion of <em>Oleum papaveris seminis</em> oil into methyl esters via esterification process: Optimization and kinetic study

Syam¹,

Rashid²,

Yunus³

et al. 2016

Grasas y Aceites

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show abstract

“…There are many possible raw materials with a potential to obtain biodiesel. Generally, the main feedstock for biodiesel production can be divided in: 1) Vegetable oils such as sunflower oil (Dizge et al, 2009;Modi et al, 2007), soybean oil (Guan et al, 2010;Rodrigues et al, 2010), rapeseed oil Watanabe et al, 2007), jatropha oil Tamalampudi et al 2008), cotton seed oil (Royon et al,2007); 2) Animal fats such as tallow, lard (Da Cunha et al,, 2009;Ngo et al 2008); 3) Waste cooking oils and industrial waste oils (Chen et al, 2009;Halim et al, 2009). The fatty acid composition of animal fats is not favourable for biodiesel production, since they contain predominantly saturated fatty acids.…”

Section: Key Operational Variablesmentioning

confidence: 99%

“…The packed bed reactor consisted of two series of Pyrex column where the substrate mixture was fed upwards through the column using a peristaltic pump (Halim et al 2009). With Novozyme 435 as biocatalyst, the FAME yield was 80% and the operational stability was longer than 120h.…”

Section: Reactor Configuration and Industrial Applicationmentioning

confidence: 99%

Biodiesel Fuel Production by Enzymatic Transesterification of Oils: Recent Trends, Challenges and Future Perspectives

Luković¹,

Knežević‐Jugović²,

Bezbradica³

2011

Alternative Fuel

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“…The accumulated glycerol influences whole cell stability through mass transfer limitation only, while the accumulated methyl ester influences whole cell stability through both mass transfer limitation and product inhibition (Li et al, 2008). Halim et al (2009) studied continuous biosynthesis of biodiesel from waste cooking palm oil in a packed bed reactor; investigating optimization using response surface methodology and mass transfer, specifically the effect of mass transfer in the packed bed bioreactor has been studied extensively. Models for fatty acid methyl ester yield are developed for cases of reaction control and mass transfer control Efforts in minimizing mass transfer effects in enzymatic transesterification of crude palm oil in a biphasic system have always been the compromise between enzyme loading and agitation speed, therefore, effect of enzyme loading and agitation speed on fatty acid methyl ester productivity in terms of intrinsic and external mass transfer limitations and the effective reaction time may be determined using factorial design.…”

Section: Bioreactorsmentioning

confidence: 99%

Influence of Mass Transfer and Kinetics on Biodiesel Production Process

Poljanšek¹,

Likozar²

2011

Mass Transfer in Multiphase Systems and Its Applications

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Continuous biosynthesis of biodiesel from waste cooking palm oil in a packed bed reactor: Optimization using response surface methodology (RSM) and mass transfer studies

Cited by 270 publications

References 24 publications

Conversion of <em>Oleum papaveris seminis</em> oil into methyl esters via esterification process: Optimization and kinetic study

Conversion of <em>Oleum papaveris seminis</em> oil into methyl esters via esterification process: Optimization and kinetic study

Biodiesel Fuel Production by Enzymatic Transesterification of Oils: Recent Trends, Challenges and Future Perspectives

Influence of Mass Transfer and Kinetics on Biodiesel Production Process

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