Optimization of Base-Catalyzed Transesterification in Biodiesel Production from Refined Palm Oil via Circulation Process through Static Mixer Reactor

2014 ◽  
Vol 931-932 ◽  
pp. 1038-1042 ◽  
Author(s):  
Suhdee Niseng ◽  
Krit Somnuk ◽  
Gumpon Prateepchaikul
Keyword(s):  
Methyl Ester ◽  
Response Surface ◽  
Palm Oil ◽  
Suitable Condition ◽  
Biodiesel Production ◽  
Quadratic Model ◽  
Response Models ◽  
Surface Models ◽  
Excel Solver ◽  
Refined Palm Oil

In this work, response surface methodology (RSM), with 5-level and 2-factor central composite design (CCD) was used to optimize the condition of base-catalyzed transesterification from refined palm oil. The two main parameters; methanol concentration and potassium hydroxide concentration, were varied to investigate the effect on the methyl ester purity. The result indicated that the KOH concentration was the most significant to produce methyl ester (the lowest p-values occurs in all response models). From excel solver, full quadratic model was obtained for predicting the response surface models. The suitable condition: 23.81 vol.% methanol and 11.80 wt.% KOH under temperature of 60°C and reaction time of 60 min, is the optimum condition.

scholarly journals Optimisation of Epoxide Ring-Opening Reaction for the Synthesis of Bio-Polyol from Palm Oil Derivative Using Response Surface Methodology

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 648
Author(s):  
Norsuhaili Kamairudin ◽  
Seng Soi Hoong ◽  
Luqman Chuah Abdullah ◽  
Hidayah Ariffin ◽  
Dayang Radiah Awang Biak
Keyword(s):  
Response Surface Methodology ◽  
Methyl Oleate ◽  
Response Surface ◽  
Reaction Temperature ◽  
Palm Oil ◽  
Biodiesel Production ◽  
Quadratic Model ◽  
Epoxide Ring ◽  
Reaction Parameters ◽  
Hydroxyl Value

The development of bio-polyol from vegetable oil and its derivatives is gaining much interest from polyurethane industries and academia. In view of this, the availability of methyl oleate derived from palm oil, which is aimed at biodiesel production, provides an excellent feedstock to produce bio-polyol for polyurethane applications. In this recent study, response surface methodology (RSM) with a combination of central composite rotatable design (CCRD) was used to optimise the reaction parameters in order to obtain a maximised hydroxyl value (OHV). Three reaction parameters were selected, namely the mole ratio of epoxidised methyl oleate (EMO) to glycerol (1:5–1:10), the amount of catalyst loading (0.15–0.55%) and reaction temperature (90–150 °C) on a response variable as the hydroxyl value (OHV). The analysis of variance (ANOVA) indicated that the quadratic model was significant at 98% confidence level with (p-value > 0.0001) with an insignificant lack of fit and the regression coefficient (R2) was 0.9897. The optimum reaction conditions established by the predicted model were: 1:10 mole ratio of EMO to glycerol, 0.18% of catalyst and 120 °C reaction temperature, giving a hydroxyl value (OHV) of 306.190 mg KOH/g for the experimental value and 301.248 mg KOH/g for the predicted value. This result proves that the RSM model is capable of forecasting the relevant response. FTIR analysis was employed to monitor the changes of functional group for each synthesis and the confirmation of this finding was analysed by NMR analysis. The viscosity and average molecular weight (MW) were 513.48 mPa and 491 Da, respectively.

Continuous Methyl Ester Production Process from Refined Palm Oil Using 3D-Printed Static Mixers

2020 ◽  
Vol 998 ◽  
pp. 134-139
Author(s):  
Kritsakon Pongraktham ◽  
Krit Somnuk
Keyword(s):  
Methyl Ester ◽  
Pressure Drop ◽  
Palm Oil ◽  
Plug Flow ◽  
Biodiesel Production ◽  
Continuous Reactor ◽  
Potassium Methoxide ◽  
Static Mixers ◽  
3D Printed ◽  
Refined Palm Oil

The objective of this research was to study the methyl ester purity and pressure drop when the reactants flowed through the 3D-printed continuous static mixer reactor. The various types of 3D-printed mixing elements: KSM, LSM, SMX-3, SMX-4, SMX-5, SMV-3, SMV-4, and SMV-5 were inserted into the tube to blend the refined palm oil (RPO) and potassium methoxide (CH3KO) during the transesterification process. Therefore, the comparison of various types and plug flow (PF) reactors in continuous methyl ester production was carried out to assessed the purity of methyl ester with the condition was 23.81 vol.% methanol and 11.8 wt.% KOH at 50°C temperature. The results showed that the pressure drop had increased when a flow rate of water was increased. The pressure drop in the continuous reactor increased to 29.9% of SMV-5, 19.9% of SMV-4, 12.0% of SMV-3, 7.0% of SMX-5, 7.0% of SMX-4, 7.0% of SMX-3, 3.6% of LSM and 0.9% of KSM when compared with the empty tube cases. According to biodiesel production, the purity of methyl ester decreased by 93.63% of SMV-5, 92.49% of SMV-4, 91.63% of SMV-3, 51.68% of SMX-5, 47.47% of LSM, 46.17% of SMX-4, 45.31% of SMX-3, 42.36% of KSM, and 12.28% of PF, respectively, when compared to the highest purities achieved with PF reactor. Thus, a 662% improvement in ester purity was obtained by using the SMV-5 reactor instead of the PF reactor within 360 mm.

Calcium Methoxide Synthesis from Quick Lime Using as Solid Catalyst in Refined Palm Oil Biodiesel Production

2013 ◽  
Vol 834-836 ◽  
pp. 550-554 ◽  
Author(s):  
Warakom Suwanthai ◽  
Vittaya Punsuvon ◽  
Pilanee Vaithanomsat
Keyword(s):  
Palm Oil ◽  
Acid Methyl Ester ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Catalyst Loading ◽  
Solid Catalyst ◽  
Solid Base ◽  
Quick Lime ◽  
X Ray ◽  
Refined Palm Oil

In this research, calcium methoxide was synthesized as solid base catalyst from quick lime for biodiesel production. The catalyst was further characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), attenuated total reflection fourier transform (ATR-FTIR) and Energy-dispersive X-ray spectroscopies (EDX) to evaluate its performance. The transesterification of refined palm oil using calcium methoxide and the process parameters affecting the fatty acid methyl ester (FAME) content such as catalyst concentration, methanol:oil molar ratio and reaction time were investigated. The results showed that the FAME content at 97% was achieved within 3 h using 3 %wt catalyst loading, 12:1 methanol:oil molar ratio and 65 °C reaction temperature. The result of FAME suggested calcium methoxide was the promising solid catalyst for substitution of the conventional liquid catalyst.

scholarly journals The Performance and Exhaust Emissions of a Diesel Engine Fuelled with Calophyllum inophyllum—Palm Biodiesel

Processes ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 597 ◽  
Author(s):  
Damanik ◽  
Ong ◽  
Mofijur ◽  
Tong ◽  
Silitonga ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Palm Oil ◽  
Alternative Fuels ◽  
Acid Methyl Ester ◽  
International Standards ◽  
Biodiesel Production ◽  
Calophyllum Inophyllum ◽  
Harmful Emission ◽  
High Heating Value

Nowadays, increased interest among the scientific community to explore the Calophyllum inophyllum as alternative fuels for diesel engines is observed. This research is about using mixed Calophyllum inophyllum-palm oil biodiesel production and evaluation that biodiesel in a diesel engine. The Calophyllum inophyllum–palm oil methyl ester (CPME) is processed using the following procedure: (1) the crude Calophyllum inophyllum and palm oils are mixed at the same ratio of 50:50 volume %, (2) degumming, (3) acid-catalysed esterification, (4) purification, and (5) alkaline-catalysed transesterification. The results are indeed encouraging which satisfy the international standards, CPME shows the high heating value (37.9 MJ/kg) but lower kinematic viscosity (4.50 mm2/s) due to change the fatty acid methyl ester (FAME) composition compared to Calophyllum inophyllum methyl ester (CIME). The average results show that the blended fuels have higher Brake Specific Fuel Consumption (BSFC) and NOx emissions, lower Brake Thermal Efficiency (BTE), along with CO and HC emissions than diesel fuel over the entire range of speeds. Among the blends, CPME5 offered better performance compared to other fuels. It can be recommended that the CPME blend has great potential as an alternative fuel because of its excellent characteristics, better performance, and less harmful emission than CIME blends.

Esterification of Waste Palm Oil in Wastewater Pond for Community Biodiesel Production

2014 ◽  
Vol 692 ◽  
pp. 133-138
Author(s):  
Athitan Timyamprasert ◽  
Vittaya Punsuvon ◽  
Kasem Chunkao ◽  
Juan L. Silva ◽  
Tae Jo Kim
Keyword(s):  
Fatty Acid ◽  
Methyl Ester ◽  
Optimum Condition ◽  
Palm Oil ◽  
Fatty Acid Content ◽  
Sulfuric Acid Concentration ◽  
Acid Methyl Ester ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Methyl Ester Content

The aim of this research was to develop a two-step technique to prepare biodiesel from waste palm oil (WPO) with high free fatty acid content. The developed process consists of esterification and transesterification steps. Response surface methodology (RSM) was applied for investigating the experimental design for esterification step. Design of experiment was performed by application of 5-levels-3-factors central composite design in order to study the optimum condition for decreasing FFA in WPO. The WPO with low FFA was further experimented in transesterification step to obtain fatty acid methyl ester (FAME). The investigated results showed that the WPO containing 48.62%wt of high FFA. The optimum condition of esterification step was 28 moles of methanol to FFA in WPO molar ratio, 5.5% sulfuric acid concentration in 90 min of reaction time and 60 °C of reaction temperature. After transesterification step, WPO biodiesel gave methyl ester content at 84.05% according to EN 14103 method. The properties of WPO methyl ester meet the standards of Thailand community biodiesel that can be used as fuel in agricultural machine.

Optimization of melon oil methyl ester production using response surface methodology

2017 ◽  
Vol 2 (1) ◽  
pp. 1-10 ◽  
Author(s):  
O. S. Aliozo ◽  
L. N. Emembolu ◽  
O. D. Onukwuli
Keyword(s):  
Response Surface Methodology ◽  
Reaction Time ◽  
Methyl Ester ◽  
Response Surface ◽  
Research Work ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Reaction Conditions ◽  
Central Composite Designs ◽  
American Society

Abstract In this research work, melon oil was used as feedstock for methyl ester production. The research was aimed at optimizing the reaction conditions for methyl ester yield from the oil. Response surface methodology (RSM), based on a five level, four variable central composite designs (CCD)was used to optimize and statistically analyze the interaction effect of the process parameter during the biodiesel production processes. A total of 30 experiments were conducted to study the effect of methanol to oil molar ratio, catalyst weight, temperature and reaction time. The optimal yield of biodiesel from melon oil was found to be 94.9% under the following reaction conditions: catalyst weight - 0.8%, methanol to oil molar ratio - 6:1, temperature - 55°C and reaction time of 60mins. The quality of methyl ester produced at these conditions was within the American Society for Testing and Materials (ASTM D6751) specification.

scholarly journals Response Surface Methodology for Biodiesel Production Using Calcium Methoxide Catalyst Assisted with Tetrahydrofuran as Cosolvent

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Nichaonn Chumuang ◽  
Vittaya Punsuvon
Keyword(s):  
Response Surface Methodology ◽  
Reaction Time ◽  
Response Surface ◽  
Catalyst Concentration ◽  
Acid Methyl Ester ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Quadratic Model ◽  
Molar Ratio ◽  
Standard Requirement

The present study was performed to optimize a heterogeneous calcium methoxide (Ca(OCH3)2) catalyzed transesterification process assisted with tetrahydrofuran (THF) as a cosolvent for biodiesel production from waste cooking oil. Response surface methodology (RSM) with a 5-level-4-factor central composite design was applied to investigate the effect of experimental factors on the percentage of fatty acid methyl ester (FAME) conversion. A quadratic model with an analysis of variance obtained from the RSM is suggested for the prediction of FAME conversion and reveals that 99.43% of the observed variation is explained by the model. The optimum conditions obtained from the RSM were 2.83 wt% of catalyst concentration, 11.6 : 1 methanol-to-oil molar ratio, 100.14 min of reaction time, and 8.65% v/v of THF in methanol concentration. Under these conditions, the properties of the produced biodiesel satisfied the standard requirement. THF as cosolvent successfully decreased the catalyst concentration, methanol-to-oil molar ratio, and reaction time when compared with biodiesel production without cosolvent. The results are encouraging for the application of Ca(OCH3)2 assisted with THF as a cosolvent for environmentally friendly and sustainable biodiesel production.

Comparative Study on Two-Step Fatty Acid Methyl Ester (FAME) Production from High FFA Crude Palm Oil Using Microwave Technique and Conventional Technique

2014 ◽  
Vol 917 ◽  
pp. 87-95 ◽  
Author(s):  
Suliana Abu Bakar ◽  
Suzana Yusup ◽  
Murni Melati Ahmad ◽  
Armando T. Quitain ◽  
Mitsuru Sasaki ◽  
...  
Keyword(s):  
Reaction Time ◽  
Methyl Ester ◽  
Palm Oil ◽  
Biodiesel Production ◽  
Conventional Heating ◽  
Process Conditions ◽  
Microwave Method ◽  
Crude Palm Oil ◽  
Microwave Technique ◽  
Pre Treatment

The production of biodiesel from crude palm oil (CPO) using microwave technique is investigated and has been compared with conventional heating. Two-step biodiesel production process is applied to maximize the highest biodiesel yield in short reaction time using microwave method. Sulfuric acid (H2SO4) as acid catalysts is used in pre-treatment of feedstock by esterification process followed by potassium hydroxide (KOH) as base catalyst for transesterification process with low methanol to oil ratio. The main purpose of the pre-treatment process is to reduce the free fatty acids (FFA) content of CPO from higher value of FFA content (>6.8%) to a minimum level for biodiesel production (<1%). Esterification and transesterification is carried out in fully instrumented and controlled microwave reactor system to get higher yield in shorter time. This two-step esterification and transesterification process showed that the maximum conversion of palm biodiesel obtained is 95.1% with the process conditions of methanol-to-oil molar ratio of 6:1, reaction temperature 65oC, reaction time 15min, and 2% (wt/wt) KOH amount using microwave method compared to conventional heating where the palm oil methyl ester (POME) yield obtained is 81% at the same conditions. The result showed that, the biodiesel production using microwave technique proved to be a fast and easy route to get high yields of biodiesel.

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