Application of Calcium Methoxide as Solid Base Catalyst for Biodiesel Production from Waste Cooking Oil

2016 ◽  
Vol 723 ◽  
pp. 594-598 ◽  
Author(s):  
Nichaonn Chumuang ◽  
Vittaya Punsuvon

In this study, the biodiesel production of waste cooking oil using calcium methoxide as solid base catalyst was investigated. The calcium methoxide catalyst was synthesized from calcined quick lime reacted with methanol. The XRD result showed that the catalyst was successfully synthesized with sufficient purity. The strength of catalyst was examined on the transesterification reaction of waste cooking oil and methanol. Parameters affecting on transesterification such as the catalyst concentration, methanol-to-oil-molar ratio, reaction time and reaction temperature were investigated. The results showed that the percentage of fatty acid methyl ester conversion of 99.06%. The optimum conditions were achieved within 3 h using 3wt% catalyst concentration, 12:1 methanol-to-oil molar ratio and 65°C reaction temperature. In addition, the kinetic study of transesterification reaction was carried out at the temperature from 30°C to 65°C. The pseudo-first order was good agreement with the experiment results. The reaction rate constant (k) and activated energy (Ea) were determined as 0.023 min-1 and 55.77 kJ/mol, respectively.

2009 ◽  
Vol 12 (17) ◽  
pp. 91-99 ◽  
Author(s):  
Huong Thi Thanh Le ◽  
Tien Van Huynh ◽  
Tan Minh Phan ◽  
Hoa Thi Viet Tran

In our work, biodiesel was prepared from Tra fat by methanolysis reaction using activated calcium oxide as solid base catalyst. Effects of various process parameters on biodiesel production such as molar ratio of methanol to fat, catalyst concentration, temperature and time of reaction and the active mechanism of CaO catalyst for the transesterification reaction were investigated. The results show that CaO has strong basicity and high catalytic activity as a heterogeneous solid base catalyst and the transesterification reaction takes place on basic sites of calcium diglyceroxide formed due to the reaction between Cao and the by-produced glycerol. The biodiesel yield achieves 92.95 % at 60°C, 90 minutes, 8:1 molar ratio of fat to methanol, and 6 % CaO catalyst. Important fuel properties of the produced biodiesel meet the specifications of ASTM D 6751 biodiesel standard.


Author(s):  
Rehan Zainol Abidin ◽  
Gaanty Pragas Maniam ◽  
Mohd. Hasbi Ab. Rahim

Waste cooking oil has a high potential as a raw material in biodiesel production due to its abundant availability and cheapest among other feedstock. Hence transesterification reaction is carried out using waste cooking oil in this research. The objective of this study is to synthesize and characterize the catalyst. On the other hand, deoiled spent bleaching clay impregnated with 40% CaO utilized as a catalyst. Optimization was carried out on methanol to oil molar ratio (6:1-24:1), catalyst loading (3-10 wt.%) and reaction duration (2-10 h). The catalyst of deoiled spent bleaching clay doped with 40% CaO was prepared by wet impregnation method and calcined at 500 °C for 4 hours. The catalyst shows high activity under optimum condition of 5 hours of reaction time, 12:1 of methanol to oil molar ratio with 7 wt.% of catalyst. The transesterification yields 84.7% methyl ester. Therefore, this catalyst has potential to be used in the transesterification of waste cooking oil in producing biodiesel due to its high activity. Copyright © 2016 BCREC GROUP. All rights reserved <br /><p><em>Received: 21<sup>st</sup> January 2016; Revised: 3<sup>rd</sup> March 2016; Accepted: 6<sup>th</sup> March 2016</em></p><p><strong>How to Cite:</strong> Abidin, R.Z., Maniam G.P., Rahim, M.H.A. (2016). Transesterification of Waste Cooking Oil using Calcium Loaded on Deoiled Spent Bleaching Clay as A Solid Base Catalyst. <em>Bulletin of Chemical Reaction Engineering &amp; Catalysis</em>, 11 (2): 176-181 (doi:10.9767/bcrec.11.2.548.176-181)</p><p><strong>Permalink/DOI:</strong> http://dx.doi.org/10.9767/bcrec.11.2.548.176-181</p>


2013 ◽  
Vol 634-638 ◽  
pp. 711-715 ◽  
Author(s):  
Shuang Shuang Gu ◽  
Jun Wang ◽  
Na Pang ◽  
Fang Qin Wang ◽  
Cong Li ◽  
...  

How to dispose large amounts of free fatty acids of the desilked silkworm (Bombyx mori L.) pupae oil in a suitable way have attracted considerable attention. The feasibility of biodiesel production from the desilked silkworm pupae oil using Na2O•SiO2•5H2O as a solid base catalyst was investigated, and the experimental conditions (i. e. molar ratio of methanol to oil, catalyst concentration, reaction time and reaction temperature) were studied. The experimental results indicated that Na2O•SiO2•5H2O possesses high catalytic activity towards the synthesis of biodiesel from the desilked silkworm pupae oil. The methyl esters conversion of up to 73 % for free fatty acids of the desilked silkworm pupae oil was achieved using the following reaction conditions: catalyst concentration 5 %, the molar ratio of methanol to oil 6:1, reaction temperature 70 °C, and retention time 8 h. Therefore, the desilked silkworm pupae oil is proved to be a new biodiesel source in a more sustainable way.


2007 ◽  
Vol 50 (2) ◽  
pp. 79-86 ◽  
Author(s):  
Masato Kouzu ◽  
Shinya Yamanaka ◽  
Takekazu Kasuno ◽  
Masahiko Tajika ◽  
Yoichi Aihara ◽  
...  

2018 ◽  
Vol 5 (2) ◽  
pp. 277-285 ◽  
Author(s):  
Yie Hua Yie Tan ◽  
Mohammad Omar Abdullah ◽  
Jibrail Kansedo ◽  
Agus Saptoro ◽  
Cirilo Nolasco Hipolito

In this research work, waste cooking oil biodiesel production was optimized using a design of experiment (DOE) approach: response surface methodology (RSM), based on a five level, three variables central composite design (CCD) to investigate the interaction effects of the different combination of transesterification reaction variables such as catalyst concentration, reaction temperature and time, using ostrich eggshell CaO base catalyst. A quadratic polynomial equation of the response, biodiesel yield was attained via multiple regression analysis to predict the relation between yield and the chosen variables. The results showed that the temperature and time are the most important process parameters on the biodiesel production. The optimal operating conditions for the transesterification reaction have been found to be: reaction temperature of 67 °C, alcohol/oil molar ratio of 10:1 (fixed parameter), catalyst concentration of 1.97 % w/w and reaction time of 1.77 h. The predicted biodiesel yield was about 99.67% under the optimal conditions through the ANOVA numerical method.


2021 ◽  
Vol 328 ◽  
pp. 124831 ◽  
Author(s):  
Abdul Naeem ◽  
Ihtisham Wali Khan ◽  
Muhammad Farooq ◽  
Tahira Mahmood ◽  
Israf Ud Din ◽  
...  

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