Optimization of biodiesel production from the waste cooking oil using response surface methodology

Hamze, Hoda; Akia, Mandana; Yazdani, Farshad

doi:10.1016/j.psep.2014.12.005

Cited by 165 publications

(48 citation statements)

References 52 publications

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“…The recorded over all percentage weight loss with in biodiesel degradation temperature range from 120°C to 330°C for the optimum biodiesel prepared sample (Figure 8b) was 96.5% compared with 60% weight loss for the biodiesel prepared sample at the high reactant flow rate of 200 mL/h (Figure 8c). Moreover, it was indicated from Figure 8c that the biodiesel sample prepared at high reactant flow rates poses around 30% weight losses within the oil degradation temperature range, explained as unreacted oil [23]. These results confirm the successful biodiesel production in pure state at the optimum preparation conditions in contrast to biodiesel prepared at high reactant flow rates that contains remaining unreacted oil.…”

Section: Characterization Of Produced Biodieselsupporting

confidence: 58%

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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Section: Characterization Of Produced Biodieselsupporting

confidence: 58%

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

Zaatout¹

2015

J Pet Environ Biotechnol

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“…%). The variable ranges that are provided in Table 1 were adopted to cover the intervals that commonly are utilized in literature [25][26][27][28][29]. Once the inputs and levels have been set as in Table 1, the design matrix and their corresponding combination of operating conditions are generated using the Statistical Software R (R Development Core Team, Auckland, New Zealand) [30].…”

Section: Experiments Designmentioning

confidence: 99%

An Improvement in Biodiesel Production from Waste Cooking Oil by Applying Thought Multi-Response Surface Methodology Using Desirability Functions

et al. 2017

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Abstract:The exhaustion of natural resources has increased petroleum prices and the environmental impact of oil has stimulated the search for an alternative source of energy such as biodiesel. Waste cooking oil is a potential replacement for vegetable oils in the production of biodiesel. Biodiesel is synthesized by direct transesterification of vegetable oils, which is controlled by several inputs or process variables, including the dosage of catalyst, process temperature, mixing speed, mixing time, humidity and impurities of waste cooking oil that was studied in this case. Yield, turbidity, density, viscosity and higher heating value are considered as outputs. This paper used multi-response surface methodology (MRS) with desirability functions to find the best combination of input variables used in the transesterification reactions to improve the production of biodiesel. In this case, several biodiesel optimization scenarios have been proposed. They are based on a desire to improve the biodiesel yield and the higher heating value, while decreasing the viscosity, density and turbidity. The results demonstrated that, although waste cooking oil was collected from various sources, the dosage of catalyst is one of the most important variables in the yield of biodiesel production, whereas the viscosity obtained was similar in all samples of the biodiesel that was studied.

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“…A major impediment to the full commercialization of biodiesel is the high cost of production. Thus, one way of reducing this cost is through the use of inexpensive raw materials such as WCO (Hamze et al, 2015). From the environmental point of view, the use of WCO reduces the disposal problem.…”

Section: Introductionmentioning

confidence: 99%

“…Transesterification, also known as alcoholysis, involves the formation of glycerol and esters through the reaction of alcohol with either oil or fat. The reaction type and temperature, type of alcohol, agitation speed, concentration of catalyst, water content, alcohol to oil molar ratio, and FFA of the feedstock are the core process factors that usually influence the transesterification process (Hamze et al, 2015). Compared with conventional heating, the applications of microwave irradiation in biodiesel production have led to a considerable reduction in the reaction time and an increase in the biodiesel yield (Motasemi & Ani, 2012).…”

Section: Introductionmentioning

confidence: 99%

Optimization of Biodiesel Production using a Stirred Packed-bed Reactor

Ani¹,

Said²,

Said³

2018

IJTech

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The use of waste cooking oil (WCO) as feedstock and in microwave heating technology helps to reduce the cost of biodiesel. In this study, a continuous flow transesterification of waste cooking oil (WCO) by microwave irradiation for biodiesel production using calcium oxide (CaO) as aheterogeneous catalyst, calcined from cockle shells, is used. The catalyst was packed inside a plastic perforated container mounted on a stirrer shaft and inserted inside the reactor. The thermocouple inside the reactor was connected to a temperature controller and microwave power input to maintain the temperature. Response surface methodology (RSM) was employed to study the relationships between power input, stirrer speed and liquid hourly space velocity (LHSV) on the WCO methyl ester (WCOME) conversion at a fixed molar ratio of methanol to oil of 9 and a reaction temperature set at 65 o C. The experiments were developed using the Box-Behnken design (BBD) for optimum conditions. The transesterification of the WCO was produced at 72.5% maximum WCOME conversion at an optimum power input of 445 W, stirrer speed of 380 rpm and LHSV of 71.5 h -1 . The energy consumption in a steady state condition was 0.594 kWh for the production of 1 litre WCOME, for this heterogeneous catalyst is much faster than conventional heating.

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Optimization of biodiesel production from the waste cooking oil using response surface methodology

Cited by 165 publications

References 52 publications

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

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

An Improvement in Biodiesel Production from Waste Cooking Oil by Applying Thought Multi-Response Surface Methodology Using Desirability Functions

Optimization of Biodiesel Production using a Stirred Packed-bed Reactor

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