scholarly journals Technical Feasibility of Biodiesel Production From Waste Cooking Oil: Comparison Between Electric Heating and Microwave Heating Process

2021 ◽  
Author(s):  
Wenjing Li ◽  
Guangming Li ◽  
Fan Wang ◽  
Haochen Zhu ◽  
Wenzhi He ◽  
...  
Keyword(s):  
Activation Energy ◽  
Microwave Heating ◽  
Electric Heating ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Heating Process ◽  
Cooking Oil ◽  
High Heat Transfer ◽  
Wide Range

Abstract Base-catalyzed transesterification and conversion of waste cooking oil (WCO) into biodiesel is a renewable energy production technology with a wide range of applications. The most commonly used heating method is electric heating (EH). Microwave heating (MW) has the characteristics of high heat transfer efficiency and short preheating time, and has recently received attention in this field.This study compared effects of the alkali-catalyzed transesterification reaction of WCO under EH and MW processes. The maximum biodiesel yield of EH process appeared when the reaction temperature is 60 °C, the reaction time is 30 min, the molar ratio of alcohol to oil is 6:1, and the catalyst concentration is 1.0%, up to 93.4%. The maximum biodiesel yield obtained from MW technique is 80.66%, under the condition of 200W, 5min, 1wt. % KOH and the methanol/oil molar ratio of 9:1. The activation energy for CH and MW process are found to be 6 768 J·mol-1 and 503.4 J·mol-1, respectively. Microwave heating greatly reduced the activation energy of the reaction, as well as transesterification yield. Compared with other biodiesel producing process, EH process in this study has the advantages of high speed and low production cost, while biodiesel yield is slightly insufficient. This is likely due to the small amount of un-removed moisture contained in the WCO.

scholarly journals Optimization of Waste Cooking Oil’s FFA as Biodiesel Feedstock

Teknomekanik ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 14-21
Author(s):  
Sri Rizki Putri Primandari ◽  
Andril Arafat ◽  
Harumi Veny
Keyword(s):  
Irradiation Time ◽  
Control Variable ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Cooking Oil ◽  
Biodiesel Feedstock ◽  
Temperature Irradiation ◽  
Acid Esterification ◽  
Central Composite

Waste cooking oil has high Free Fatty Acid (FFA). It affected on decreasing a biodiesel production. FFA reduction is one of important processes in biodiesel production from waste cooking oil. Thus, this study aimed to examine the optimum condition in FFA reduction. The process is assisted by using ultrasonic irradiation on acid esterification. Variables of the process are acid concentration, molar ratio of methanol and oil, and irradiation time. Meanwhile temperature irradiation on 45oC is a control variable. Process optimization is conducted by Response Surface Methodology (RSM) with Central Composite Design (CCD). The optimum conditions of response were 7.22:1 (methanol to oil molar ratio), 0.92% wt H2SO4, 26.04 minutes (irradiation time), and 45oC (irradiation temperature). Ultrasonic system reduced FFA significantly compared to conventional method.

scholarly journals Evaluation of Shell-Derived Calcium Oxide Catalysts for the Production of Biodiesel Esters from Cooking Oils

2021 ◽  
pp. 20-27
Author(s):  
Ngee Sing Chong ◽  
Francis Uchenna Okejiri ◽  
Saidi Abdulramoni ◽  
Shruthi Perna ◽  
Beng Guat Ooi
Keyword(s):  
Calcium Oxide ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
X Ray ◽  
Cooking Oil ◽  
Biodiesel Synthesis ◽  
Cooking Oils ◽  
The Cost ◽  
Percentage Conversion

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.

scholarly journals Waste cooking oil processing for fatty acid methyl ester and mono glycerides production with magnetite catalyst

Food Research ◽  
2020 ◽  
Vol 4 (S1) ◽  
pp. 220-226
Author(s):  
Widayat ◽  
Hadiyanto ◽  
D.A. Putra ◽  
Nursafitri I. ◽  
H. Satriadi ◽  
...  
Keyword(s):  
Acid Methyl Ester ◽  
Chemical Precipitation ◽  
Waste Cooking Oil ◽  
Acid Number ◽  
Biodiesel Production ◽  
National Standard ◽  
Molar Ratio ◽  
Oil Processing ◽  
Cooking Oil ◽  
Acid Methyl

The objective of this research was to produce biodiesel using waste cooking oil and various magnetite catalysts with the esterification-transesterification process. Magnetite catalysts tested were α- Fe2O3, α- Fe2O3/Al2O3, α- Fe2O3/ZSM-5 catalysts. Catalysts were prepared through chemical precipitation and calcination. The esterificationtransesterification process was carried out with the conditions WCO: methanol molar ratio of 15:1, catalyst (1% wt of oil), heated at 65℃ for 3 hrs. The results showed biodiesel production using α- Fe2O3-ZSM-5 catalyst obtained higher %FAME (83.28%), yield (91.915%) and monoglyceride content (16.72%) compared to others due to larger pore volume. Biodiesel produced passed the requirement of Indonesian National Standard (SNI) based on density, acid number and viscosity.

scholarly journals Surfactant Imprinting Hyperactivated Immobilized Lipase as Efficient Biocatalyst for Biodiesel Production from Waste Cooking Oil

Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 914 ◽  
Author(s):  
Yang ◽  
Zhang
Keyword(s):  
Burkholderia Cepacia ◽  
Energy Demand ◽  
Immobilized Lipase ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Enzymatic Production ◽  
Burkholderia Cepacia Lipase ◽  
Cooking Oil ◽  
Highly Active

Enzymatic production of biodiesel from waste cooking oil (WCO) could contribute to resolving the problems of energy demand and environment pollutions.In the present work, Burkholderia cepacia lipase (BCL) was activated by surfactant imprinting, and subsequently immobilized in magnetic cross-linked enzyme aggregates (mCLEAs) with hydroxyapatite coated magnetic nanoparticles (HAP-coated MNPs). The maximum hyperactivation of BCL mCLEAs was observed in the pretreatment of BCL with 0.1 mM Triton X-100. The optimized Triton-activated BCL mCLEAs was used as a highly active and robust biocatalyst for biodiesel production from WCO, exhibiting significant increase in biodiesel yield and tolerance to methanol. The results indicated that surfactant imprinting integrating mCLEAs could fix BCL in their active (open) form, experiencing a boost in activity and allowing biodiesel production performed in solvent without further addition of water. A maximal biodiesel yield of 98% was achieved under optimized conditions with molar ratio of methanol-to-WCO 7:1 in one-time addition in hexane at 40 °C. Therefore, the present study displays a versatile method for lipase immobilization and shows great practical latency in renewable biodiesel production.

Biodiesel Production through Direct Transesterification of Waste Cooking Oil with Alcohol via Ultrasonic Wave

2013 ◽  
Vol 389 ◽  
pp. 12-16
Author(s):  
Yong Feng Kang ◽  
Hua Jin Shi ◽  
Lin Ge Yang ◽  
Jun Xia Kang ◽  
Zi Qi Zhao
Keyword(s):  
Reaction Time ◽  
Reaction Temperature ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Ultrasonic Power ◽  
Cooking Oil ◽  
Biodiesel Synthesis ◽  
Optimum Reaction ◽  
Ester Exchange Reaction

Biodiesel is prepared from waste cooking oil and methanol. The ester exchange reaction is conducted under ultrasonic conditions with alkali as the catalysts. Five factors influencing on the transesterification reaction of biodiesel production are discussed in this study, including the reaction time, reaction temperature, catalyst amount, methanol to oil molar ratio, ultrasonic power. A series of laboratory experiments were carried out to test the conversion of biodiesel under various conditions. The process of biodiesel production was optimized by application of orthogonal test obtain the optimum conditions for biodiesel synthesis. The results showed that the optimum reaction conditions were:molar ratio of oil to methanol 8:1,catalysts 1.2g KOH/100g oil,reaction temperature 70°C, reaction time 50 min,Ultrasonic power 400W. The conversion may up to 96.48%.

scholarly journals Synthesis and Characterization of Waste Eggshell-Based Montmorillonite Clay Catalyst for Biodiesel Production from Waste Cooking Oil

2021 ◽  
Vol 287 ◽  
pp. 02006
Author(s):  
Muhammad Ayoub ◽  
Suzana Yusuf ◽  
Abrar Inayat ◽  
Sami Ullah ◽  
Maliha Uroos ◽  
...  
Keyword(s):  
High Performance ◽  
Waste Cooking Oil ◽  
Montmorillonite Clay ◽  
Biodiesel Production ◽  
Bet Surface Area ◽  
Molar Ratio ◽  
Total Production ◽  
Major Drawback ◽  
Cooking Oil ◽  
Highly Active

The depletion of resources and increase in demand for fossil fuel raise concerns as it is natural and non-renewable. Therefore, it will cause limitation on its availability and continuous reduction. This issue has led to the search for more economic, sustainable, and environmentally friendly alternatives which is biodiesel. The major drawback that reduces the possibility of biodiesel commercialization is the high cost of oil feedstock as it covers 75% of its total production cost. The waste cooking oil is used as feedstock in continuous transesterification as it is the primary option to lower the cost of biodiesel production. Biodiesel can be prepared using waste cooking oil and catalyst through transesterification reaction. In this research, the focus is on the utilization of chicken and quail waste eggshell to synthesize highly active Calcium Oxide (CaO)-based heterogenous catalyst with montmorillonite clay to catalyze efficient conversion of waste cooking oil to biodiesel. The formation of CaO/montmorillonite catalyst was confirmed based on the outputs from X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The physio-chemically characteristics of catalysts exhibited a BET surface area from the ranging from 9.2-9.5 m2/g and presence of around 87% of elemental calcium as constituent through XRF characterization. In addition to this, high-performance liquid chromatography (HPLC) analysis is used to determine the conversion of biodiesel using conventional and microwave heating method which revealed a maximum biodiesel production yield of 98%. This optimum biodiesel yield was obtained at reaction temperature, molar ratio of waste cooking oil to methanol, and catalyst amount of 60 ºC, 2 h, 1:12, 2.5 wt.% and 5 wt.% for both eggshells, respectively.

scholarly journals OPTIMIZING REACTION CONDITIONS OF BIODIESEL PRODUCTION FROM WASTE COOKING OIL USING GREEN SOLID CATALYST

2020 ◽  
Vol 7 (8) ◽  
pp. 65-71
Author(s):  
I Nengah Simpen ◽  
I Made Sutha Negara ◽  
Sofyan Dwi Jayanto
Keyword(s):  
Reaction Time ◽  
Research Result ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
National Standard ◽  
Molar Ratio ◽  
Solid Catalyst ◽  
Reaction Conditions ◽  
Cooking Oil ◽  
One Step

Biodiesel production from waste cooking oil in two steps reaction of esterification and transesterification is low efficient, due to twice methanol consumption and need more reaction time. Optimizing reaction conditions of CaO as a matrix of solid catalyst prepared from crab shell (green CaO) and modified by K2O/TiO2 for converting waste cooking oil to biodiesel have been carried out. Catalytic process of waste cooking oil to biodiesel took place in one step reaction of esterification and transesterification. The research result showed that optimum conditions in its one step reaction such as methanol to oil molar ratio was 9:1, amount of CaO/K2O-TiO2 catalyst to oil was 5% and reaction time of 60 minutes with biodiesel yield was 88.24%. Physical and chemical properties of biodiesel which produced from one step reaction of esterification and transesterification of waste cooking oil were suitable with Indonesian National Standard (SNI-04-7182-2006) namely density at 40oC of 850 kg/m3, kinematic viscosity at 40oC of 3.32 cSt, water content of 0.046%, iodine number of 59.25 g I2/100g and acid value of 0.29 mg KOH/g. Gas chromatography-mass spectrometry (GC-MS) analysis of biodiesel formed fatty acid methyl esters from conversion of waste cooking oil.

Biodiesel Production from Waste Cooking Oil Using KCL/CaO as Catalyst

2014 ◽  
Vol 1044-1045 ◽  
pp. 259-262
Author(s):  
Si Yi Yu ◽  
Xin You Han ◽  
Jun Mi
Keyword(s):  
Methyl Esters ◽  
Uniform Design ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
National Standard ◽  
Molar Ratio ◽  
Impregnation Method ◽  
Wet Impregnation ◽  
Cooking Oil ◽  
Wet Impregnation Method

A KCl-doped CaO solid alkali catalyst was obtained in a wet impregnation method and treated under microwave irradiation to obtain enhanced stability and activity. Then the catalyst was successfully used in the transesterification of refined waste cooking oil with methanol to produce biodiesel. A uniform design experimentation U7 (74) and regression analysis by DPS software were used to obtain the optimum conditions of transesterification at the lowest cost. Temperature 338K, catalyst amount 4.5% (wt./wt.oil) and methanol/oil molar ratio 9:1, after 90 min reaction, the fatty acid methyl esters yield reached 91.28% and the purity was over 99%, which was up to the national standard for B-100 biodiesel.

scholarly journals Multi-Feedstocks Biodiesel Production from Esterification of Calophyllum inophyllum Oil, Castor Oil, Palm Oil and Waste Cooking Oil

2020 ◽  
Vol 9 (1) ◽  
pp. 119-123
Author(s):  
H Hadiyanto ◽  
Apsari Puspita Aini ◽  
Widayat Widayat ◽  
Kusmiyati Kusmiyati ◽  
Arief Budiman ◽  
...  
Keyword(s):  
Vegetable Oils ◽  
Palm Oil ◽  
Ricinus Communis ◽  
Acid Value ◽  
Waste Cooking Oil ◽  
Raw Material ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Calophyllum Inophyllum ◽  
Cooking Oil

Biodiesel can be produced from various vegetable oils and animal fat. Abundant sources of vegetable oil in Indonesia, such as Calophyllum inophyllum, Ricinus communis, palm oil, and waste cooking oil, were used as raw materials. Multi-feedstock biodiesel was used to increase the flexibility operation of biodiesel production. This study was conducted to determine the effect of a combination of vegetable oils on biodiesel characteristics. Degumming and two steps of esterification were applied for high free fatty acid feedstock before trans-esterification in combination with other vegetable oils. Potassium hydroxide was used as a homogenous catalyst and methanol as another raw material. The acid value of C. inophyllum decreased from 54 mg KOH/gr oil to 2.15 mg KOH/gr oil after two steps of esterification. Biodiesel yield from multi-feedstock was 87.926% with a methanol-to-oil molar ratio of 6:1, temperature of 60 ℃, and catalyst of 1%wt. ©2020. CBIORE-IJRED. All rights reserved

THE EFFECT OF CONVENTIONAL AND MICROWAVE HEATING TECHNIQUES ON TRANSESTERIFICATION OF WASTE COOKING OIL TO BIODIESEL

2016 ◽  
Vol 78 (8-3) ◽  
Author(s):  
Mohd Johari Kamaruddin ◽  
Nurulsurusiah Mohamad ◽  
Umi Aisah Asli ◽  
Muhammad Abbas Ahmad Zaini ◽  
Kamarizan Kidam ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Processing Parameters ◽  
Waste Cooking Oil ◽  
Green Technology ◽  
Conventional Heating ◽  
Molar Ratio ◽  
Catalyst Loading ◽  
Thermal Heating ◽  
Microwave Assisted ◽  
Cooking Oil

This research is focused on the effect of processing parameters such as molar ratio of sample to solvent (1:3-1:15), catalyst loading (0.5-2.5 wt %), temperature (40-80 °C) and time of reaction (5-180 min) on the transesterification yield of waste cooking oil (WCO) in conventional thermal heating and microwave heating techniques. The analysis carried out revealed that the microwave assisted transesterification produced a comparable yield to conventional heating transesterification with ~5 times faster in heating up the reaction mixture to a reaction temperature and reduced ~90% of the reaction time required. This study concludes that microwave assisted transesterification, which is a green technology, may have great potential in reducing the processing time compared to conventional thermal heating transesterification.

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