scholarly journals Antioxidant Effect on Oxidation Stability of Blend Fish Oil Biodiesel with Vegetable Oil Biodiesel and Petroleum Diesel Fuel

2013 ◽  
Vol 2 (2) ◽  
pp. 75-80
Author(s):  
M. Hossain ◽  
S.M.A Sujan ◽  
M.S. Jamal
Keyword(s):  
Fish Oil ◽  
Vegetable Oil ◽  
Diesel Fuel ◽  
Rapeseed Oil ◽  
Oxidation Stability ◽  
Stability Behavior ◽  
Rancimat Method ◽  
Effective Antioxidant ◽  
The Stability ◽  
Low Sulfur

Two different phenolic synthetic antioxidants were used to improve the oxidation stability of fish oil biodiesel blends with vegetable oil biodiesel and petroleum diesel. Butylhydroxytoluene (BHT) most effective for improvement of the oxidation stability of petro diesel, whereas  tert-butylhydroquinone (TBHQ) showed good performance in fish oil biodiesel. Fish oil/Rapeseed oil biodiesel mixed showed some acceptable results in higher concentration ofantioxidants. TBHQ showed better oxidation stability than BHT in B100 composition. In fish oil biodiesel/diesel mixed fuel, BHT was more effective antioxidant than TBHQ to increase oxidationstability because BHT is more soluble than TBHQ. The stability behavior of biodiesel/diesel blends with the employment of the modified Rancimat method (EN 15751). The performance ofantioxidants was evaluated for treating fish oil biodiesel/Rapeseed oil biodiesel for B100, and blends with two type diesel fuel (deep sulfurization diesel and automotive ultra-low sulfur or zero sulfur diesels). The examined blends were in proportions of 5, 10, 15, and 20% by volume of fish oilbiodiesel.

scholarly journals PROPERTIES OF MULTICOMPONENT BIOFUEL BLENDS, CONTAINING RAPESEED OIL BUTYL ESTERS, BIOBUTANOL AND FOSSIL DIESEL FUEL

2014 ◽  
Vol 46 (1) ◽  
pp. 14-22
Author(s):  
Irina Kazanceva ◽  
Eglė Sendžikienė ◽  
Milda Gumbytė ◽  
Kiril Kazancev
Keyword(s):  
Diesel Fuel ◽  
Rapeseed Oil ◽  
Methyl Esters ◽  
Oxidation Stability ◽  
Calorific Value ◽  
Flow Properties ◽  
Copper Strip ◽  
Cold Flow ◽  
Butyl Esters ◽  
Partial Glycerides

Chemical and physical properties (density, kinematic viscosity, flash point, copper strip corrosion, calorific value) of multicomponent biofuel blends, containing rapeseed oil butyl or methyl esters, biobutanol and fossil diesel fuel are discussed in this paper. Ester, water and partial glycerides contents were determinated in multicomponent biofuel blends. These properties were compared with the same properties of pure biodiesel (rapeseed oil butyl and methyl esters) and pure diesel fuel. As there are no standards for blends fuel, containing more than 7  of biocomponents, that is why, density and viscosity were evaluated according standards EN 14214 and EN 590.It is determined that the addition of butanol and rapeseed oil butyl esters should improve the cold flow properties, such as cloud point and cold filter plugging point.As rapeseed oil butyl esters were produced from high acidity rapeseed oil (4%), much attention was deviated for oxidation stability and acidity of pure rapeseed oil butylesters and it blends with butanol and diesel fuel.

scholarly journals SIMULATION OF THE MIXING PROCESS OF DIESEL AND BIOFUELS

2021 ◽  
pp. 24-29
Author(s):  
Irina Gunko
Keyword(s):  
Vegetable Oil ◽  
Diesel Fuel ◽  
Rapeseed Oil ◽  
High Speed ◽  
Cetane Number ◽  
Ethyl Esters ◽  
Fatty Acid Esters ◽  
Mixing Process ◽  
Complete Combustion ◽  
Pump Flow

The viscosity of a fuel depends on its hydrocarbon composition. Vegetable oil is considered an alternative to diesel fuel. Its high viscosity makes it difficult to consider as a commercial diesel fuel. Vegetable oil is lipids, fatty acid esters. They have a high calorific value and contain straight hydrocarbon chains, resulting in their relatively high cetane number. Viscosity and density determine the evaporation and mixing process in an engine, as they affect the shape and type of the fuel flame, the size of the droplets formed, and how they enter the combustion chamber. Low density and viscosity provide better fuel injection; with an increase in the diameter of the droplet, its complete combustion decreases, therefore, the specific fuel consumption increases and the smoke of the exhaust gases increases. The viscosity of the fuel affects the pump flow and fuel leakage through the piston pair clearance. As the viscosity decreases, the amount of diesel fuel leaks between the plunger and bushing increases, resulting in a decrease in pump flow. Converting the engine to a fuel with a lower density and viscosity will result in burnout of the piston head, so the fuel equipment needs to be adjusted. Plunger wear is viscosity dependent. It fuel is in the range of 1.8-7.0 mm2/s, which practically does not affect the durability of modern high-speed diesel equipment. Consider using vegetable rapeseed oil as an alternative to diesel fuel. Its viscosity can be reduced by chemically converting esterification to ethyl esters. When the cheese rapeseed oil is heated to 80 °C, it will give a viscosity value similar to that of commercial diesel. The mixing system will have an operating power equivalent to that of a diesel engine when heated to 40-50 °C.

scholarly journals Physicochemical Properties Enhancement of Biodiesel Synthesis from Various Feedstocks of Waste/Residential Vegetable Oils and Palm Oil

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4928
Author(s):  
Hüseyin Çamur ◽  
Ebaa Alassi
Keyword(s):  
Methyl Ester ◽  
Physicochemical Properties ◽  
Palm Oil ◽  
Diesel Fuel ◽  
Oxidation Stability ◽  
Flow Properties ◽  
Cold Flow ◽  
Cold Flow Properties ◽  
Ultra Low Sulfur Diesel ◽  
Low Sulfur

The main aim of the present study was to improve the oxidation stability and cold flow properties of biodiesel produced from waste frying/cooking oil and palm oil. In this work, waste frying/cooking methyl ester (WFME) and palm methyl ester (PME) were prepared using an alkali-catalyzed transesterification process, and the physicochemical properties of the pure biodiesel as well as of binary blends among them were investigated. The results indicated that palm biodiesel and WFME18, produced from a mixture of frying, cooking, sunflower, and corn oils, can be used as antioxidant additives, enhancing biodiesel stability. Additionally, it was found that WFME1 and WFME12 derived from waste residential canola oil can be used as cold flow improvers for enhancing the cold flow properties of palm biodiesel. Moreover, ultra-low sulfur diesel fuel winter (ULSDFW), ultra-low sulfur diesel fuel summer (ULSDFS), kerosene (KF), and benzene (BF) were utilized to enhance the cold flow properties of the samples and meet the requirements of diesel fuel standards. The investigation of the experimental results indicated that blending WFME-PM with a low proportion of petroleum-based fuel (KF and BF) could significantly improve the cold flow properties (CP and PP) as well as oxidation stability of WFME.

Study on Biodegradable Lubricants: Improvement in Oxidation Stability of Vegetable Oils

2005 ◽  
Author(s):  
Jiusheng Li
Keyword(s):  
Chemical Reactions ◽  
Vegetable Oil ◽  
Vegetable Oils ◽  
Rapeseed Oil ◽  
Arrhenius Equation ◽  
Oxidation Stability ◽  
Oxidation Test

To improve the oxidation stability of vegetable oil, several chemical reactions such as transesterification, polymerization and epoxidation were used to reduce the content of unsaturated bonds in their molecules. The results of oxidation test indicate that epoxidation is an available method to improve the oxidation stabilities of vegetable oils. The efficiencies of antioxidants used for protection of rapeseed oil from oxidation were studied using PDSC, and the active energies of oil samples were calculated by using Arrhenius equation.

scholarly journals Exhaust Emissions of a Medium Power Diesel Engine Operated with Biodiesel

2013 ◽  
Vol 8-9 ◽  
pp. 93-102 ◽  
Author(s):  
Nicolae Cordos ◽  
Adrian Todorut ◽  
István Barabás
Keyword(s):  
Diesel Fuel ◽  
Rapeseed Oil ◽  
Direct Injection ◽  
Cetane Number ◽  
Oxidation Stability ◽  
Acid Value ◽  
Hydrocarbon Emissions ◽  
Coke Content ◽  
Hc Emissions ◽  
Experimental Researches

The purpose of this study was to identify from experimental researches the results regarding the nitrogen oxides (NOx) emissions and hydrocarbon emissions (HC), emissions of a four-stroke, four cylinder, direct injection of a Romanian medium power diesel tractor engine at partial loads operating on diesel fuel (DF), rapeseed methyl ester (RME), degummed and filtered (5 μm) pure rapeseed oil (RO100) and its blends with diesel fuel: 20% pure rapeseed oil-80% diesel fuel (RO20), 50% pure rapeseed oil-50% diesel fuel (RO50), 75% pure rapeseed oil-25% diesel fuel (RO75) compared to diesel fuel. The main properties of the tested fuels (density, kinematic viscosity, oxidation stability, acid value, peroxide number, coke content, water content and cetane number) have been determined. The value of NOx emissions for the experimented biofuels is smaller up to 53% (for RO100) and increases up to 37% (for RO75) for different engine loads as compared to the diesel fuel. The HC emission shows a decrease for all biofuels used in the experiment ranging between 4% (for RO100) and 63% (RO75) at different loads relative to the diesel fuel.

Rapeseed Oil Plant

2020 ◽  
pp. 59-62
Author(s):  
E. V. Ovchinnikov ◽  
S. Yu. Uyutov ◽  
S. S. Shevelev ◽  
A. D. Dubrovsky
Keyword(s):  
Diesel Engine ◽  
Vegetable Oil ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Rapeseed Oil ◽  
Motor Fuel ◽  
Fuel System ◽  
Engine Operation ◽  
Oil Fuel ◽  
Technical Solutions

This article off ers a method and technical solutions for using vegetable oil fuel as fuel for a diesel engine. The use of rapeseed as a fuel is hindered by its peculiarity, namely, the main problem is the high viscosity and high self-ignition temperature relative to diesel fuel. The authors propose technical solutions that ensure the use of vegetable oil fuel as a motor fuel in diesel engines. For research purposes, a two-fuel system was developed, manufactured and tested, which allows working part of the time on diesel fuel and part of the time on vegetable oil, in particular on rapeseed oil, depending on the engine operating modes. Experiments have shown high effi ciency of the two-fuel system, which excludes negative consequences for the diesel engine. As a result of the research, the team of authors obtained results and conclusions confirming that the dual fuel system allows the use of vegetable oils as motor fuel in diesel engines, while the engine operation is possible in all modes.

scholarly journals Сhanging the lubricity of diesel fuel with vegetable oil additive

2021 ◽  
Vol 18 (5) ◽  
pp. 534-543
Author(s):  
S. N. Krivtsov ◽  
T. I. Krivtsova
Keyword(s):  
Diesel Engine ◽  
Vegetable Oil ◽  
Diesel Fuel ◽  
Translational Motion ◽  
Environmental Safety ◽  
Common Rail System ◽  
Wear Spot ◽  
The Common ◽  
Low Sulfur ◽  
Lubricating Properties

Intriduction. The environmental safety of cars with a diesel engine does not lose its relevance. In the conditions of stricter requirements for diesel fuel, the content of many substances harmful to the environment, including sulfur, is not allowed. As is known, low-sulfur fuels require the presence of additives that improve the lubricating properties of diesel fuel. Non-compliance with the requirements for lubricity significantly affects the resource of the fuel supply system of a diesel engine, primarily the Common Rail system. In order with the circumstances listed above, we hypothesized that vegetable oil can serve in small concentrations to improve the lubricating properties of fuels.Materials and methods. In our research, we conducted experiments using the standard HFRR method (highfrequency translational motion of a ball rubbing against a plate in fuel). A microscope was used to visually assess the wear spots and measure their size. Diesel fuel was taken as samples for experiments and vegetable oil was added to it as an additive in certain proportions.Discussion and conclusions. The vegetable oil additive can improve the lubricity of diesel fuel, even if it does not comply with GOST for this parameter. The experiments conducted allow us to conclude that the vegetable oil additive as a percentage of diesel fuel almost linearly reduces the diameter of the wear spot

Novel approaches for the production of bio-diesel using waste vegetable oil

2014 ◽  
Vol 3 (10) ◽  
pp. 3419
Author(s):  
Mohan Reddy Nalabolu* ◽  
Varaprasad Bobbarala ◽  
Mahesh Kandula
Keyword(s):  
Diesel Fuel ◽  
Oxidation Stability ◽  
Acid Value ◽  
Waste Cooking Oil ◽  
Flash Point ◽  
Carbon Residue ◽  
Fuel Properties ◽  
Present Moment ◽  
Total Acid ◽  
Cooking Oil

At the present moment worldwide waning fossil fuel resources as well as the tendency for developing new renewable biofuels have shifted the interest of the society towards finding novel alternative fuel sources. Biofuels have been put forward as one of a range of alternatives with lower emissions and a higher degree of fuel security and gives potential opportunities for rural and regional communities. Biodiesel has a great potential as an alternative diesel fuel. In this work, biodiesel was prepared from waste cooking oil it was converted into biodiesel through single step transesterification. Methanol with Potassium hydroxide as a catalyst was used for the transesterification process. The biodiesel was characterized by its fuel properties including acid value, cloud and pour points, water content, sediments, oxidation stability, carbon residue, flash point, kinematic viscosity, density according to IS: 15607-05 standards. The viscosity of the waste cooking oil biodiesel was found to be 4.05 mm2/sec at 400C. Flash point was found to be 1280C, water and sediment was 236mg/kg, 0 % respectively, carbon residue was 0.017%, total acid value was 0.2 mgKOH/g, cloud point was 40C and pour point was 120C. The results showed that one step transesterification was better and resulted in higher yield and better fuel properties. The research demonstrated that biodiesel obtained under optimum conditions from waste cooking oil was of good quality and could be used as a diesel fuel.

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