Investigators from Tshwane University of Technology Target Antioxidants (Effects of Antioxidants on the Cetane number, Viscosity, Oxidation Stability, and Thermal Properties of Biodiesel Produced from Nonedible Oils)
By a News Reporter-Staff News Editor at Biotech Week -- Current study results on Antioxidants have been published. According to news reporting from Pretoria, South Africa, by NewsRx journalists, research stated, "Poor oxidation stability of biodiesel is the central problem associated with its commercial acceptance. To enhance the practical feasibility of biodiesel, antioxidants are added to increase its storage stability."
The news correspondents obtained a quote from the research from the Tshwane University of Technology, "It is quite possible that these additives may affect other basic fuel properties of biodiesel. Therefore, the present study investigated the effects of antioxidants on the basic fuel properties of biodiesel produced from nonedible oils of African origin (Moringa oleifera, Jatropha curcus, and Croton megalocarpus). Four antioxidants: 1,2,3-trihydroxybenzene (pyrogallol, PY), 3,4,5-trihydroxybenzoic acid (propyl gallate, PG), 2-tert-butyl-4-methoxyphenol (butylated hydroxyanisole, BHA) and 2,6-di-tert-butyl-4-methylphenol (Butylated Hydroxy Toluene, BHT) were investigated for their effectiveness in oxidation stability. The results showed that PY and PG were more effective than BHA and BHT. The most effective antioxidant (PY in this study) was was studied further for its effects on other basic fuel properties of biodiesels such as kinematic viscosity, cetane number, and thermal properties. It was observed that the kinematic viscosity was reduced at lower concentrations of antioxidant additives (500 ppm) and slightly increased at high concentrations (1000 ppm) but lower than that of pure biodiesel. The cetane number was slightly increased at both 500 and 1000 ppm of PY antioxidant content. The effects of the antioxidant on the thermal properties were not clearly observed."
According to the news reporters, the research concluded: "Therefore, it can be concluded that adding antioxidants to biodiesel lengthens increases the storage stability and also improves the kinematic viscosity, thermal properties, and cetane number as an added advantage."
For more information on this research see: Effects of Antioxidants on the Cetane number, Viscosity, Oxidation Stability, and Thermal Properties of Biodiesel Produced from Nonedible Oils. Energy Technology, 2013;1(9):537-543. Energy Technology can be contacted at: Wiley-V C H Verlag Gmbh, Boschstrasse 12, D-69469 Weinheim, Germany (see also Antioxidants).
Our news journalists report that additional information may be obtained by contacting T.T. Kivevele, Tshwane Univ Technol, Dept. of Mech Engn, ZA-0001 Pretoria, South Africa.
Keywords for this news article include: Antioxidants, Biotechnology, Energy, Pretoria, Biodiesel, Oil and Gas, South Africa, Bioengineering, Protective Agents
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