A process model to estimate the cost of industrial scale biodiesel production from waste cooking oil by supercritical transesterification

2007 ◽  
Vol 50 (4) ◽  
pp. 442-458 ◽  
Author(s):  
J.M.N. van Kasteren ◽  
A.P. Nisworo
2021 ◽  
pp. 20-27
Author(s):  
Ngee Sing Chong ◽  
Francis Uchenna Okejiri ◽  
Saidi Abdulramoni ◽  
Shruthi Perna ◽  
Beng Guat Ooi

Due to the high cost of feedstock and catalyst in biodiesel production, the viability of the biodiesel industry has been dependent on government subsidies or tax incentives. In order to reduce the cost of production, food wastes including eggshells and oyster shells have been used to prepare calcium oxide (CaO) catalysts for the transesterification reaction of biodiesel synthesis. The shells were calcined at 1000 °C for 4 hours to obtain CaO powders which were investigated as catalysts for the transesterification of waste cooking oil. The catalysts were characterized by Fourier Transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), and X-ray fluorescence (XRF) spectroscopy. Reaction parameters such as methanol-to-oil molar ratio, CaO catalyst concentration, and reaction time were evaluated and optimized for the percentage conversion of cooking oil to biodiesel esters. The oyster-based CaO showed better catalytic activity when compared to the eggshell-based CaO under the same set of reaction conditions.


Author(s):  
M. S. Dulawat ◽  
J. M. Makavana ◽  
S. V. Kelaiya ◽  
M. J. Gojiya ◽  
G. A. Gadhiya ◽  
...  

The increasing awareness of the depletion of fossil fuel resources and the environmental benefits of biodiesel fuel has made it more attractive in recent times. Its primary advantages deal with it being one of the most renewable fuels currently available and it is also non-toxic and biodegradable. It can also be used directly in most diesel engines without requiring extensive engine modifications. However, the cost of biodiesel is the major hurdle to its commercialization in comparison to petroleum-based diesel fuel. Biodiesel is proved to be a potential candidate for partial substitute of mineral diesel oil. The environmental issues associated with the use of fossil-based energy sources have informed the search for more sustainable energy alternatives. This work investigated the potential of producing biodiesel from waste cooking oil (WCO). The work gives ample evidence that oil from eateries in WCO could be used in producing high quality biodiesel in an easy, one-step transesterification reaction without the need for acid esterification which increases the overall cost of the production process.


2014 ◽  
Vol 1070-1072 ◽  
pp. 107-111
Author(s):  
Gui Xiong Zhou ◽  
Guan Yi Chen ◽  
Bei Bei Yan

The main hurdle to the commercialization of lipase-catalyzed production of biodiesel is the cost of enzyme and feedstock oil. In order to reduce the cost of biodiesel production, the lipase-producing whole cells ofAspergillus nigerand immobilized onto biomass support particles (BSPs) were used for the production of biodiesel from waste cooking oil. This article studies this technological process, focusing on optimization of several process parameters, including the water content, catalyst loading and molar ratio of methanol to waste cooking oil. The results indicate that the water content of 20%(based on oil weight), BSPs-immobilized cell catalysts of 6% and methanol/oil molar ratio of 4:1 are the optimum conditions for biodiesel production from waste cooking oil. Under the optimum conditions, the maximum methyl ester (ME) content in the reaction mixture reaches 84.7 wt.% after 72 h. In addition, the whole-cell biocatalysts showed excellent reusability, retaining 73% productivity after 6 batches. Our results suggest that whole-cell A. niger immobilized on BSP is a promising biocatalyst for biodiesel production from waste cooking oil.


Author(s):  
Charishma Venkata Sai Anne ◽  
Karthikeyan S. ◽  
Arun C.

Background: Waste biomass derived reusable heterogeneous acid based catalysts are more suitable to overcome the problems associated with homogeneous catalysts. The use of agricultural biomass as catalyst for transesterification process is more economical and it reduces the overall production cost of biodiesel. The identification of an appropriate suitable catalyst for effective transesterification will be a landmark in biofuel sector Objective: In the present investigation, waste wood biomass was used to prepare a low cost sulfonated solid acid catalyst for the production of biodiesel using waste cooking oil. Methods: The pretreated wood biomass was first calcined then sulfonated with H2SO4. The catalyst was characterized by various analyses such as, Fourier-transform infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Spectroscopy (EDS) and X-ray diffraction (XRD). The central composite design (CCD) based response surface methodology (RSM) was applied to study the influence of individual process variables such as temperature, catalyst load, methanol to oil molar ration and reaction time on biodiesel yield. Results: The obtained optimized conditions are as follows: temperature (165 ˚C), catalyst loading (1.625 wt%), methanol to oil molar ratio (15:1) and reaction time (143 min) with a maximum biodiesel yield of 95 %. The Gas chromatographymass spectrometry (GC-MS) analysis of biodiesel produced from waste cooking oil was showed that it has a mixture of both monounsaturated and saturated methyl esters. Conclusion: Thus the waste wood biomass derived heterogeneous catalyst for the transesterification process of waste cooking oil can be applied for sustainable biodiesel production by adding an additional value for the waste materials and also eliminating the disposable problem of waste oils.


ACS Omega ◽  
2021 ◽  
Vol 6 (13) ◽  
pp. 9204-9212
Author(s):  
Neelam Khan ◽  
Sang H. Park ◽  
Lorraine Kadima ◽  
Carlove Bourdeau ◽  
Evelyn Calina ◽  
...  

Author(s):  
Shahabaldin Rezania ◽  
Zahra Sotoudehnia Korrani ◽  
Mohammad Ali Gabris ◽  
Jinwoo Cho ◽  
Krsihna Kumar Yadav ◽  
...  

2015 ◽  
Vol 77 ◽  
pp. 521-526 ◽  
Author(s):  
Zahoor Ullah ◽  
Mohamad Azmi Bustam ◽  
Zakaria Man

Sign in / Sign up

Export Citation Format

Share Document