scholarly journals Alternative Raw Materials to Produce Biodiesel through Alkaline Heterogeneous Catalysis

Catalysts ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 690 ◽  
Author(s):  
Edgar M. Sánchez Faba ◽  
Gabriel O. Ferrero ◽  
Joana M. Dias ◽  
Griselda A. Eimer
Keyword(s):  
Heterogeneous Catalysis ◽  
Raw Materials ◽  
Fatty Acid Content ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Absolute Methanol ◽  
Solid Catalyst ◽  
Oil Refineries ◽  
Cooking Oil ◽  
Used Cooking Oil

Recent research focuses on new biodiesel production and purification technologies that seek a carbon-neutral footprint, as well as cheap, renewable and abundant raw materials that do not compete with the demand for food. Then, many attractive alternatives arise due to their availability or low-cost, such as used cooking oil, Jatropha oil (non-edible) or byproducts of vegetable oil refineries. Due to their composition and the presence of moisture, these oils may need a pretreatment to reach the established conditions to be used in the biodiesel production process so that the final product complies with the international quality standards. In this work, a solid catalyst based on 10 wt % sodium oxide supported on mesoporous silica SBA-15, was employed in the transesterification of different feedstocks (commercial sunflower and soybean oil, used cooking oil, acid oil from soapstock and Jatropha hieronymi oil) with absolute methanol in the following reaction conditions—2–8 wt % catalyst, 14:1 methanol to oil molar ratio, 60 °C, vigorous magnetic stirring and 5 h of reaction. In this way, first- and second-generation biodiesel was obtained through heterogeneous catalysis with methyl ester yields between 52 and 97 wt %, depending on the free fatty acid content and the moisture content of the oils.

scholarly journals KRITERIA RUMAH MAKAN SUPPLIER MINYAK JELANTAH DALAM RANGKA PERENCANAAN BAHAN BAKU BIODIESEL

2019 ◽  
Vol 1 (1) ◽  
pp. 27-33
Author(s):  
D.U.M. Susilo ◽  
Th. Candra Wasis A.S. ◽  
Zakwan .
Keyword(s):  
Raw Materials ◽  
Waste Cooking Oil ◽  
Raw Material ◽  
Biodiesel Production ◽  
Analytic Hierarchy ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
A Value ◽  
Many Sources ◽  
The City

The using of biodiesel as an environmentally friendly fuel has received attention from consumers to producers. So, a lot of research was done on the potential raw material to become biodiesel. One of the raw materials for biodiesel was waste cooking oil. Pontianak City have many sources including waste cooking oil from restaurants. Therefore restaurants in the city of Pontianak might be used as suppliers of waste cooking oil in biodiesel production. This study aims to determine the priority of criteria and sub-criteria for restaurants as suppliers and determine good restaurants as suppliers of used cooking in Pontianak City . Purposive technique sampling using a sample of 61 house dining, interviewed to obtain alternative data suppliers. Expert survey questionnaire contains priority weighting of criteria and supplier criteria, analyzed using AHP ( Analytic Hierarchy Process ). Grouping of restaurants based on alternative supplier values ​​is used to determine good restaurants to be suppliers. The priority criteria for restaurants as consecutive suppliers are experience (0.289), quality (0.279), capacity (0.231), service (0.148) and price (0.053). Sub-criteria priority of restaurants as suppliers in a row is the time span of used cooking oil sold(0.161), length of time used cooking oil (0.155), income (0.129), type of cooking oil (0.107), type of fried food products (0.092), volume of cooking oil (0.090), frying volume (0.085), transaction convenience (0.082), subject to used cooking oil (0.056), used cooking oil price (0.030) and ease of payment (0.013). A value of ≥ 0.325 is a dining value that shows a very better priority as a supplier. The number of restaurants as suppliers is 8 % of the population of restaurants in the city of Pontianak..

scholarly journals Supermagnetic Nano-Bifunctional Catalyst from Rice Husk: Synthesis, Characterization and Application for Conversion of Used Cooking Oil to Biodiesel

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 225 ◽  
Author(s):  
Balkis Hazmi ◽  
Umer Rashid ◽  
Yun Hin Taufiq-Yap ◽  
Mohd Lokman Ibrahim ◽  
Imededdine Arbi Nehdi
Keyword(s):  
Rice Husk ◽  
Operating Conditions ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Catalyst Loading ◽  
High Catalytic Activity ◽  
Impregnation Method ◽  
Reaction Duration ◽  
Cooking Oil ◽  
Used Cooking Oil

The present work investigated the biodiesel production from used cooking oil catalyzed by nano-bifunctional supermagnetic heterogeneous catalysts (RHC/K2O/Fe) derived from rice husk doped with K2O and Fe synthesized by the wet impregnation method. The synthesized catalysts (RHC/K2O/Fe) were characterized for crystallinity by X-ray diffraction spectroscopy (XRD), total acidity and basicity using CO2/NH3-TPD, textural properties through Brunauer-Emmett-Teller (BET), thermal stability via thermogravimetric analyzer (TGA), functional group determination by Fourier-transform infrared spectroscopy (FTIR), surface morphology through field emission scanning electron microscopy (FESEM), and magnetic properties by vibrating sample magnetometer (VSM). The VSM result demonstrated that the super-paramagnetic catalyst (RHC/K2O-20%/Fe-5%) could be simply separated and regained after the reaction using an external magnetic field. The operating conditions such as catalyst loading, methanol/oil molar ratio, temperature, and reaction duration were studied. The screened RHC/K2O-20%/Fe-5% catalyst was selected for further optimization and the optimum reaction parameters found were 4 wt % of catalyst, a molar ratio of methanol/oil of 12:1, 4 h reaction duration, and 75 °C reaction temperature with a maximal yield of 98.6%. The reusability study and reactivation results revealed that the nano-bifunctional magnetic catalyst (RHC/K2O-20%/Fe-5%) could be preserved by high catalytic activity even after being reused five times.

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.

scholarly journals TRANSESTERIFICATION OF BIODIESEL FROM WASTE COOKING OIL USING CAO NANOCATALYST

Konversi ◽  
2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Cindi Ramayanti ◽  
Sarah Dampang
Keyword(s):  
Raw Materials ◽  
Waste Cooking Oil ◽  
Acid Number ◽  
Production Costs ◽  
Raw Material ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Second Stage ◽  
Cooking Oil ◽  
Initial Stage

The production costs of biodiesel based on vegetable oil is not economical, so it is difficult for biodiesel to compete with petrodiesel. Waste cooking oil can be used as a source of raw materials for biodiesel production. This research aims to produce biodiesel from waste cooking oil. The initial stage is to pretreatment of waste cooking oil. At this step, the waste cooking oil is filtered to separate impurities from the raw material. After that, it is heated to 100 oC to remove the water content. The second stage is transesterification. At this stage, the reaction time remains for one hour at a temperature of 65 oC. the product is centrifuged to separate the catalyst. The highest yield was obtained in the 12: 1 molar ratio variable and the amount of catalyst 3%, which was 0.922. Yield obtained ranged from 0.853-0.922. An increase in the molar ratio is significant enough to increase the amount of yield. However, increasing the amount of catalyst especially from 2% to 3% is not significant enough to increase biodiesel yield. The characteristics of biodiesel produced are in accordance with SNI Biodiesel, density 870 Kg / cm3, viscosity 4.25 cSt, flash point 170, and acid number 0.4 mg-KOH/g biodiesel.

scholarly journals Hybrid Response Surface Method-African Buffalo Optimization Technique for Ultrasonic Production of Biodiesel from Waste Cooking Oil using Li doped CaO Nanocatalyst

2020 ◽  
Vol 9 (5) ◽  
pp. 1938-1947
Keyword(s):  
Response Surface ◽  
Methyl Esters ◽  
Optimization Technique ◽  
Research Work ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
African Buffalo ◽  
Cooking Oil ◽  
Used Cooking Oil

In the current era, there is an increasing emphasis on green fuels for a clean environment. Authors in this work have tried to devise an innovative method to optimize ultrasonic production of biodiesel from used cooking oil, using composite technique combining Response surface Methodology and African Buffalo optimization. In this research work, heterogeneous catalyst Lithium doped CaO has been obtained from a new natural source by high-temperature thermal decomposition of Musa Balbisiana root ash and tested its Conversion efficiency for conversion of waste cooking oil into methyl esters. It was observed that the catalyst is really effective for the production of biodiesel from even high Free Fatty Acid waste cooking oil. For optimization of production parameters authors have used ABO complemented with RSM to maximize the biodiesel production yield. The maximum biodiesel yield of 96.67% was achieved using ABO which is about 15% higher than provided by RSM which is 81.01%. The highest biodiesel yield of 96.67 % is obtained at 15:1 Molar Ratio with 3.5% catalyst wt. percent, 60 Degree C Temp. in 45 Minutes with an error of 2.5 % in yield prediction by ABO. The work may be utilized by industries and researchers to use ultrasonic reactors optimally to extract better biodiesel volume in very short time instead of presently used slow mechanical stirring tank reactors.

scholarly journals Study of the production of biodiesel by enzymatic and chemical processes from used cooking oil

2019 ◽  
pp. 20-25 ◽  
Author(s):  
Juan Camilo Acevedo-Páez ◽  
Néstor Andres Urbina-Suárez ◽  
Astrid Zuleima Acevedo-Rodríguez ◽  
Luis Carlos Becerra-Orozco
Keyword(s):  
Reaction Times ◽  
Enzyme Concentration ◽  
Acid Number ◽  
Raw Material ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Enzymatic Transesterification ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Acid Esterification

The biodiesel production was analyzed by chemical and enzymatic processes, from used cooking oil (UCO), evaluating the quality and yield of the product obtained in each method. For the chemical process, an acid esterification followed by a basic transesterification was developed, (reaction temperature: 60 °C, oil:methanol 1:6 molar ratio, concentration of KOH catalyst: 1% w/w reaction times: 55 and 70 min); and enzymatic transesterification (temperature: 38 °C, oil:methanol 1:3 molar ratio, enzyme concentration lipase XX 25 split liquid: 5%, reaction times: 3 and 6 hours). Physicochemical properties (i.e. density, kinematic viscosity, moisture content, fatty acid profile, percentage of acidity, peroxides index and saponification) of the raw material were determined. Results showed the presence of oleic acid (42.45%) and palmitic acid (33.52%). The highest yield obtained was from the chemical transesterification under the conditions of 60 °C, 1% KOH and 70 min with a conversion percentage of 96.15% and an acid number of 1.33 mmKOH/g, compared to the enzymatic transesterification which registered a high acid number of 6.91 mmKOH/g and conversion percentage of 48.81% under the conditions of 38 °C, 5% of enzyme lipase and 3 hours.

Biodiesel production from used cooking oil using green solid catalyst derived from calcined fusion waste chicken and fish bones

2019 ◽  
Vol 139 ◽  
pp. 696-706 ◽  
Author(s):  
Yie Hua Tan ◽  
Mohammad Omar Abdullah ◽  
Jibrail Kansedo ◽  
Nabisab Mujawar Mubarak ◽  
Yen San Chan ◽  
...  
Keyword(s):  
Biodiesel Production ◽  
Solid Catalyst ◽  
Cooking Oil ◽  
Fish Bones ◽  
Used Cooking Oil

scholarly journals Optimization of Process Parameters for Biodiesel Production from Waste Cooking Oil using DOE Techniques

2020 ◽  
Vol 8 (6) ◽  
pp. 3934-3939
Keyword(s):  
Process Parameters ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Optimization Of Process Parameters ◽  
Accurate Temperature ◽  
Temperature Time ◽  
Validation Experiments

In the current study the process parameters for used cooking oil biodiesel production are optimized by using Design of Experiments (Taguchi technique) and validation experiments are carried out at the optimized parameters to cross verify the results obtained. A specially designed equipment which can maintain the exact conditions required for optimization is used. This equipment is microcontroller operated and does not require any human intervention to maintain the accurate temperature, time and other parameters. By Taguchi strategy best yield acquired is by Molar ratio of A2 (1:9), Catalyst concentration of B3 (1.00%), Reaction temperature of C2 (60ºC), Reaction time of D3 (120 min). The approval trial was completed for the results and the yield is observed to be 93.25%, which resulted in improvement of up to 15% yield as compared to that of crude method. The properties of acquired biodiesel are found out and it very well may be inferred that the properties of got biodiesel are within ASTM norms.

Synthesis and characterization of coal fly ash supported zinc oxide catalyst for biodiesel production using used cooking oil as feed

2021 ◽  
Vol 170 ◽  
pp. 302-314
Author(s):  
Adeyinka S. Yusuff ◽  
Aman K. Bhonsle ◽  
Jayati Trivedi ◽  
Dinesh P. Bangwal ◽  
Lok P. Singh ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Fly Ash ◽  
Oxide Catalyst ◽  
Coal Fly Ash ◽  
Biodiesel Production ◽  
Synthesis And Characterization ◽  
Cooking Oil ◽  
Used Cooking Oil

scholarly journals Two-Stage Biodiesel Synthesis from Used Cooking Oil with a High Acid Value via an Ultrasound-Assisted Method

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3703
Author(s):  
Ming-Chien Hsiao ◽  
Wei-Ting Lin ◽  
Wei-Cheng Chiu ◽  
Shuhn-Shyurng Hou
Keyword(s):  
Acid Value ◽  
Molar Ratio ◽  
Optimal Conditions ◽  
Two Stage ◽  
Cooking Oil ◽  
High Acid ◽  
Used Cooking Oil ◽  
Biodiesel Synthesis ◽  
Stage Process ◽  
Ultrasound Assisted

In this study, ultrasound was used to accelerate two-stage (esterification–transesterification) catalytic synthesis of biodiesel from used cooking oil, which originally had a high acid value (4.35 mg KOH/g). In the first stage, acid-catalyzed esterification reaction conditions were developed with a 9:1 methanol/oil molar ratio, sulfuric acid dosage at 2 wt %, and a reaction temperature of 60 °C. Under ultrasound irradiation for 40 min, the acid value was effectively decreased from 4.35 to 1.67 mg KOH/g, which was decreased to a sufficient level (<2 mg KOH/g) to avoid the saponification problem for the subsequent transesterification reaction. In the following stage, base-catalyzed transesterification reactions were carried out with a 12:1 methanol/oil molar ratio, a sodium hydroxide dosage of 1 wt %, and a reaction temperature of 65 °C. Under ultrasound-assisted transesterification for 40 min, the conversion rate of biodiesel reached 97.05%, which met the requirement of EN 14214 standard, i.e., 96.5% minimum. In order to evaluate and explore the improvement of the ultrasound-assisted two-stage (esterification–transesterification) process in shortening the reaction time, additional two-stage biodiesel synthesis experiments using the traditional mechanical stirring method under the optimal conditions were further carried out in this study. It was found that, under the same optimal conditions, using the ultrasound-assisted two-stage process, the total reaction time was significantly reduced to only 80 min, which was much shorter than the total time required by the conventional method of 140 min. It is worth noting that compared with the traditional method without ultrasound, the intensification of the ultrasound-assisted two-stage process significantly shortened the total time from 140 min to 80 min, which is a reduction of 42.9%. It was concluded that the ultrasound-assisted two-stage (esterification–transesterification) catalytic process is an effective and time-saving method for synthesizing biodiesel from used cooking oil with a high acid value.

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