Optimization of cotton seed biodiesel quality (critical properties) through modification of its FAME composition by highly selective homogeneous hydrogenation

Papadopoulos, Christos E.; Lazaridou, Anastasia; Koutsoumba, Asimina; Kokkinos, Nikolaos C.; Christoforidis, A.; Νικολάου, Νικόλαος

doi:10.1016/j.biortech.2009.10.016

Cited by 47 publications

(27 citation statements)

References 22 publications

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“…Fajar et al [4] studied partial hydrogenation of Jatropha biodiesel and showed that the oxidation stability improved from 4.16 to 5.99 h. The cetane number also increased slightly from 55.87 to 56.65 after the hydrogenation. Wadumesthrige et al [5] and Papadopoulos et al [6] also found the similar phenomenon after studying partial hydrogenation of biodiesel from poultry fat and cotton oil. After hydrogenation, the physical characteristic of Jatropha biodiesel *Corresponding Author.…”

Section: Introductionsupporting

confidence: 49%

The Influence of Injection Timing on Performance Characteristics of Diesel Engine Using Jatropha Biodiesel with and without Partial Hydrogenation

Fajar

Setiapraja

2014

J. Mechatron. Electr. Power Veh. Technol.

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Experimental research has been conducted to investigate the effects of blend of hydrogenated and unhydrogenated Jatropha biodiesel with diesel fuel in volume ratio of 30:70 (B30) on combustion characteristics (BSFC, thermal efficiency and smoke emission) of single cylinder diesel engine. In this experiment, engine speed was kept constant at 1,500, 2,500, and 3,500 rpm with maximum engine load at BMEP 5 bar and injection timings were varied. Experimental result showed that at engine speed 1,500 rpm, BSFC of B30 hydrogenated and unhydrogenated Jatropha biodiesel were higher than it of diesel fuel at all injection timings (10° to 18° BTDC). At the same condition, partial hydrogenated Jatropha biodiesel showed higher BSFC than unhydrogenated Jatropha biodiesel. However, the difference in BSFC became smaller for all fuels at engine speed 2,500 rpm and 3,500 rpm at all injection timing. Jatropha biodiesel with and without partial hydrogenation tend to have higher thermal efficiency compared with diesel fuel at all engine speed and injection timing. The best injection timings to operate B30 Jatropha biodiesel with and without hydrogenation were 14°, 18° and 24° BTDC at engine speed 1,500, 2,500, and 3,500 rpm respectively. This conclusion was deduced based on the minimum value of BSFC and the maximum value of thermal efficiency. Smoke emissions for all fuels were in the same level for all conditions.

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Section: Introductionsupporting

confidence: 49%

The Influence of Injection Timing on Performance Characteristics of Diesel Engine Using Jatropha Biodiesel with and without Partial Hydrogenation

Fajar

Setiapraja

2014

J. Mechatron. Electr. Power Veh. Technol.

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“…Usually, the reaction involves 1 mole of triglyceride (the primary constituent of vegetable oil) and 3 moles of alcohol (methanol) in the presence of sodium or potassium alkoxides as catalyst (Ma and Hanna 1999;Papadopoulos et al 2010). Biodiesel obtained from this process is from the fatty acid methyl esters (FAME) of the vegetable oils.…”

Section: Introductionmentioning

confidence: 99%

“…Economic feasibility studies showed that biodiesel obtained from non-edible oil is cheaper than that obtained from edible oil. But there exist certain problems like the high free fatty acid (FFA) content that are difficult to convert to biodiesel in non-edible oils (Papadopoulos et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Biodiesels from Calabash and Rubber Seeds Oils

Awulu

Asawa

2015

Int. J. Renew. Energy Dev.

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Physicochemical properties of biodiesel from vegetable oils depend on the inherent properties of the oil-producing seeds. The purpose of this study is to investigate the physicochemical properties of biodiesels extracted from calabash and rubber seeds oils, as well as their combined oil mixtures with a view to ascertaining the most suitable for biodiesel production. Calabash and rubber seeds oils were separately extracted through the use of a mechanical press with periodic addition of water. Biodiesels were produced from each category of the oils by transesterification of the free fatty acid (FFA) with alcohol under the influence of a catalyst in batch process. The physicochemical properties of the biodiesels were investigated and comparatively analysed. The results obtained indicated an average of 1.40 wt% FFA for biodiesel produced from the purified calabash oil, which has a specific gravity of 0.920, pH of 5.93, flash point of 116 0C, fire point of 138 0C, cloud point of 70 0C, pour point of -4 0C, moisture content of 0.82 wt% and specific heat capacity of 5301 J/kgK. Conversely, the results obtained for biodiesel produced from the purified rubber oil showed an average of 33.66 wt% FFA, specific gravity of 0.885, pH of 5.51, flash point of 145 0C, fire point of 170 0C, cloud point of 10 0C, pour point of 4 0C, moisture content of 1.30 wt% and specific heat capacity of 9317 J/kgK. However, results obtained for biodiesel produced from the combined oil mixtures indicated an average of 19.77 wt% FFA content, specific gravity of 0.904, API gravity of 25.036, pH value of 5.73, flash point of 157 0C, Fire point of 180 0C, cloud point of 9 0C, pour point of 5 0C, moisture content of 0.93 wt% and specific heat capacity of 6051 J/kgK. Biodiesel produced from calabash seed oil is superior in quality to rubber seed oil, particularly in terms of its low FFA and moisture contents.

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“…Besides, the high‐boiling fraction of BDF may diffuse into the motor oil part and consequently cause engine damage. To overcome these technical problems, recent studies have focused on the deep hydrogenation of commercially available BDF or vegetable oils over novel metal catalysts . Deeply hydrogenated BDF with no double bonds in the fatty acid tails exhibits high oxidation stability; regrettably, its cold‐flow properties are inadequate for practical use.…”

Section: Composition and Fuel Properties Of Bdfs A–cmentioning

confidence: 99%

Oxygen‐Assisted Hydrogenation of Jatropha‐Oil‐Derived Biodiesel Fuel over an Alumina‐Supported Palladium Catalyst To Produce Hydrotreated Fatty Acid Methyl Esters for High‐Blend Fuels

et al. 2017

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The partial hydrogenation of jatropha–oil–derived biodiesel fuel (BDF) with a high degree of unsaturated fatty acid tails was successfully performed on an alumina‐supported palladium catalyst, denoted Pd/γ‐Al2O3, under mild conditions (100 °C and 0.5 MPa) to produce hydrotreated fatty acid methyl esters (H‐FAMEs) enriched in monounsaturated components. Trace amounts of peroxides contained in the oil feedstock or the co‐feeding of proper amounts of molecular oxygen (400–1500 ppm) resulted in enhanced activity and durability of Pd/γ‐Al2O3. The produced H‐FAMEs exhibited significantly improved oxidation stability and uncompromised cold‐flow properties, and they can serve as an excellent source of high‐quality BDFs, particularly for high‐blend fuels.

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Optimization of cotton seed biodiesel quality (critical properties) through modification of its FAME composition by highly selective homogeneous hydrogenation

Cited by 47 publications

References 22 publications

The Influence of Injection Timing on Performance Characteristics of Diesel Engine Using Jatropha Biodiesel with and without Partial Hydrogenation

The Influence of Injection Timing on Performance Characteristics of Diesel Engine Using Jatropha Biodiesel with and without Partial Hydrogenation

Comparative Analysis of Biodiesels from Calabash and Rubber Seeds Oils

Oxygen‐Assisted Hydrogenation of Jatropha‐Oil‐Derived Biodiesel Fuel over an Alumina‐Supported Palladium Catalyst To Produce Hydrotreated Fatty Acid Methyl Esters for High‐Blend Fuels

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