Biodiesel from waste cooking oils via direct sonication

Gude, Veera Gnaneswar; Grant, Georgene E.

doi:10.1016/j.apenergy.2013.04.002

Cited by 103 publications

(46 citation statements)

References 52 publications

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“…Better results were obtained at 40°C with a conversion of 88 % while at 30 and 50°C the conversion values were 86 and 85 %, respectively. Other authors [10,[22][23][24] have reported similar effects in ultrasound-assisted transesterification. This finding can be due to the fact that the solubility of methanol increases with increasing temperature, improving the conversion.…”

Section: Cetane Numbersupporting

confidence: 50%

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Biodiesel Production from Waste Frying Oil by Ultrasound‐Assisted Transesterification

et al. 2017

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The production of biodiesel as renewable, easily biodegradable, and nontoxic alternative to fossil fuels is expensive when it is derived from virgin vegetable oils. In this study, waste frying oil was used to produce biodiesel by ultrasound-assisted transesterification. The reaction was carried out with methanol, and sodium hydroxide was used as catalyst. This method is an efficient, timesaving, and economically functional tool since the process can be carried out in a shorter reaction time, at lower temperature, and with a lower quantity of catalysts compared to other techniques. The biodiesel produced by this method was analyzed for its fatty acid methyl ester composition, density, moisture and volatile matter content, acid value, saponification value, iodine value, distillation curves, and cetane number.

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Section: Cetane Numbersupporting

confidence: 50%

“…It has been demonstrated that the transesterification of vegetable oil can be carried out in short reaction times at low temperatures [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Biodiesel Production from Waste Frying Oil by Ultrasound‐Assisted Transesterification

et al. 2017

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“…This depends on the catalyst ratio and the reaction mixture volume [26]. As shown in Figure 4, increased reaction times result in increased energy expenditures.…”

Section: Waste Cooking Oil-biodiesel Conversion Via Conventional Micmentioning

confidence: 99%

Biodiesel production from low cost and renewable feedstock

et al. 2013

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Sustainable biodiesel production should: a) utilize low cost renewable feedstock; b) utilize energy-efficient, nonconventional heating and mixing techniques; c) increase net energy benefit of the process; and d) utilize renewable feedstock/energy sources where possible. In this paper, we discuss the merits of biodiesel production following these criteria supported by the experimental results obtained from the process optimization studies. Waste cooking oil, non-edible (low-cost) oils (Jatropha curcas and Camelina Sativa) and algae were used as feedstock for biodiesel process optimization. A comparison between conventional and non-conventional methods such as microwaves and ultrasound was reported. Finally, net energy scenarios for different biodiesel feedstock options and algae are presented.

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“…Moreover, proposing different catalysis approaches such as heterogeneous or enzyme catalysis improve the process reaction rate. Also, changing the process design and mixing concepts such as using ultrasonic homogenizers increase both the process mass and heat transfer [9]. The methods mentioned were found quiet effective for solving the problems facing transesterification like time consumption, soap formation, etc.…”

Section: Introductionmentioning

confidence: 99%

Production of Biodiesel from Waste Vegetable Oil via KM Micro-mixer

Zaatout¹

2015

J Pet Environ Biotechnol

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The production of biodiesel to substitute fossil fuels has been challenging to apply in many countries especially developing countries. Given the importance of this fact, this study includes the production of biodiesel from waste vegetable oils by pre-treatment followed by transesterification reaction with methanol using a KM micro-mixer reactor. KM micro-mixer happened to give noticeable enhancement for the production of biodiesel quality compared to the normal batch reactor at optimum conditions. The parameters affecting biodiesel production process such as alcohol to oil molar ratio, catalyst concentration, the presence of tetra-hydrofuran (THF) as a co-solvents and the volumetric flow rates of inlet fluids were optimized. The properties of the produced biodiesel were compared with its parent waste oil through different characterization techniques. The presence of methyl ester groups at the produced biodiesel was confirmed using both the Gas chromatography-mass spectrometry (GC-MS) and infrared spectroscopy (FT-IR). Moreover, the thermal analysis of the produced biodiesel and the comparable waste oil indicated that the product after the transesterification process began to vaporize at 120ºC which makes it lighter than its parent oil which started to vaporize at around 300ºC. The maximum biodiesel production yield of 97% was recorded using 12:1 methanol to oil molar ratio in presence of both 1% NaOH and THF/methanol volume ratio 0.3 at 60 mL/h flow rate.

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Biodiesel from waste cooking oils via direct sonication

Cited by 103 publications

References 52 publications

Biodiesel Production from Waste Frying Oil by Ultrasound‐Assisted Transesterification

Biodiesel Production from Waste Frying Oil by Ultrasound‐Assisted Transesterification

Biodiesel production from low cost and renewable feedstock

Production of Biodiesel from Waste Vegetable Oil via KM Micro-mixer

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