Temperature effect on the viscosities of palm oil and coconut oil blended with diesel oil

Tangsathitkulchai, Chaiyot; Sittichaitaweekul, Y.; Tangsathitkulchai, M.

doi:10.1007/s11746-004-0913-8

Cited by 37 publications

(21 citation statements)

References 11 publications

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“…The value of the index of saponification degummed oil (Table 1) was lower than that reported in the literature (196-211 mg KOH/g oil) [10,16] and closer to palm oil (190 mg KOH/g oil) [17]. The B. glabra oil had a viscosity higher than that of coconut (27.4 mm 2 /s), palm (36.0 mm 2 /s) [18], soybean (32.6 mm 2 /s), rapeseed (37.0 mm 2 /s), and cotton oil (33.5 mm 2 /s) [19], and below castor (239.4 mm 2 /s) [20] and crambe (Crambe abyssinica) oil (53.2 mm 2 /s) [21].…”

Section: Physicochemical Parameters Of Degummed Oilmentioning

confidence: 57%

“…However, in the gas chromatograph (GC) analysis, the conversion percentage was 91.3%, below the minimum value (96.5%) established by the ANP Resolution 45/2014 [23]. The B. glabra oil had a viscosity higher than that of coconut (27.4 mm 2 /s), palm (36.0 mm 2 /s) [18], soybean (32.6 mm 2 /s), rapeseed (37.0 mm 2 /s), and cotton oil (33.5 mm 2 /s) [19], and below castor (239.4 mm 2 /s) [20] and crambe (Crambe abyssinica) oil (53.2 mm 2 /s) [21].…”

Section: Biodiesel Analysis By Tlc 1 H-nmr and Gcmentioning

confidence: 90%

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Biodiesel Production from Bombacopsis glabra Oil by Methyl Transesterification Method

et al. 2017

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Abstract:The objective of this work was to produce methyl biodiesel from Bombacopis glabra (B. glabra) oil degummed with H 3 PO 4 . The methyl biodiesel was prepared in an alkaline medium, and characterized by physico-chemical parameters, thin-layer chrmatograghy (TLC), gas chromatograph (GC), (Nuclear magnetic resonance of hydrogen (H-NMR), thermogravimetry and infrared analysis. The physico-chemical parameters of biodiesel were in accordance with the limits established by National Agency of Petroleum, Natural Gas and Biofuels (ANP) Resolution 45/2014, except oxidation stability, where it was corrected with the addition of antioxidants such as TBHQ and BHT.

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Section: Physicochemical Parameters Of Degummed Oilmentioning

confidence: 57%

Section: Biodiesel Analysis By Tlc 1 H-nmr and Gcmentioning

confidence: 90%

Biodiesel Production from Bombacopsis glabra Oil by Methyl Transesterification Method

et al. 2017

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“…Linear relationships were established indicating that the more the saturation or the longer the fatty acyl chains, the more viscous the oil and the faster the viscosity changes with temperature. Further empirical approaches for predicting biodiesel viscosity at various temperatures were carried out by Tangsathitkulchai et al (2004) and Krisnangkura et al (2006).…”

Section: Correlation Between the Chemical Structure Of The Oil And Itmentioning

confidence: 99%

Correlation between the chemical structure of biodiesel and its physical properties

Refaat

2009

Int. J. Environ. Sci. Technol.

272

129

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ABSTRACT:Biodiesel is a renewable, biodegradable, environmentally benign, energy efficient, substitution fuel which can fulfill energy security needs without sacrificing engine's operational performance. Thus it provides a feasible solution to the twin crises of fossil fuel depletion and environmental degradation. The properties of the various individual fatty esters that comprise biodiesel determine the overall properties of the biodiesel fuel. In turn, the properties of the various fatty esters are determined by the structural features of the fatty acid and the alcohol moieties that comprise a fatty ester. Better understanding of the structure-physical property relationships in fatty acid esters is of particular importance when choosing vegetable oils that will give the desired biodiesel quality. By having accurate knowledge of the influence of the molecular structure on the properties determined, the composition of the oils and the alcohol used can both be selected to give the optimal performance. In this paper the relationship between the chemical structure and physical properties of vegetable oil esters is reviewed and engineering fatty acid profiles to optimize biodiesel fuel characteristics is highlighted.

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“…This work has its importance because at high temperature and at high pressure the ignition delay plays a vital role in the exhaust emissions & knocking characteristics of diesel engine. So the purpose of the present work was to study experimentally the effect of high hot surface Table 1 Properties of vegetable oil [3].…”

Section: Problem Formulationmentioning

confidence: 99%

Study of ignition characteristics of microemulsion of coconut oil under off diesel engine conditions

Salmani

Rehman

Zaidi³

et al. 2015

Engineering Science and Technology, an International Journal

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a b s t r a c tThe increasing awareness of the depletion of fossil fuel resources and the environmental benefits motivates the use of vegetable oils, however there is little known information about ignition and combustion characteristics of vegetable oil based fuels under off diesel engine conditions. These conditions are normally reached either during starting or when the engine is sufficiently worn out. A fuel was prepared by co-solvent blending of coconut oil with 20% butyl alcohol and was analysed. An experimental study of the measurement of ignition delay (ID) characteristics of conical fuel sprays impinging on hot surface in cylindrical combustion chamber was carried out. The objective of the study was to investigate the effect of hot surface temperatures on ignition delays of microemulsion of coconut oil at various ambient air pressures and temperatures which would have reached under off diesel engine conditions. An experimental set-up was designed and developed for a maximum air pressure of 200 bar and a maximum temperature of 800 C with the emphasis on optical method for the measurement of ignition delay. Hot surface temperature range chosen was 300e450 C and ambient air pressure (inside the combustion chamber) range chosen was 10e25 bar. Present study shows that at fixed injection pressure and fixed ambient (hot surface) temperature, at higher ambient air pressure (25 bar) inside the combustion chamber, ignition delay of diesel and microemulsion of coconut oil are comparable and therefore are having matching combustion characteristics. Although a pressure of 25 bar is much less than the precombustion pressure of most diesel engines but again conclusively establish that combustion characteristics are same despite lower air pressure, temperature and lower injection pressure. At higher injection pressure ignition delay of microemulsion of coconut oil and pure diesel attains the lower value at the same ambient air pressure inside the combustion chamber. It can also be seen that at fixed injection pressure and higher ambient temperature conditions, ignition delay variations of microemulsion of coconut oil with chamber pressure show approximate same trend as that of conventional diesel fuel.

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Temperature effect on the viscosities of palm oil and coconut oil blended with diesel oil

Cited by 37 publications

References 11 publications

Biodiesel Production from Bombacopsis glabra Oil by Methyl Transesterification Method

Biodiesel Production from Bombacopsis glabra Oil by Methyl Transesterification Method

Correlation between the chemical structure of biodiesel and its physical properties

Study of ignition characteristics of microemulsion of coconut oil under off diesel engine conditions

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