کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6476692 | 1425390 | 2017 | 8 صفحه PDF | دانلود رایگان |
- Lignocellulosic bio-oil as an antioxidant additive for biodiesel
- Acetate esters improved extraction and solubility of bio-oil compounds in biodiesel
- Less than 4Â wt.% of bio-oil in biodiesel increased oxidation stability up to 475%
- Good antioxidant performance of the additives over time
Unlike petroleum diesel, the chemical structure of biodiesel makes it prone to oxidation during long-term storage, thus involving fuel quality deterioration. Therefore, the addition of antioxidants is usually required to meet the quality standards for biodiesel commercialization. Synthetic sterically-hindered phenols have been usually employed for this purpose as free radical scavenging antioxidants. However, naturally occurring phenolics are also available, for example, in the bio-oil produced in the pyrolysis of lignocellulosic biomass. In this work, the antioxidant potential of extracted fractions of lignocellulosic bio-oil has been evaluated. Different organic solvents were tested as extraction agents, acetate esters being the best ones for incorporating bio-oil antioxidant compounds into biodiesel. In the best case, the incorporation of a small concentration of bio-oil compounds (<Â 4Â wt.%) led to an improvement of the biodiesel oxidation stability of 475% which, in our case, was enough to meet the European standard requirement.
Journal: Fuel Processing Technology - Volume 156, February 2017, Pages 407-414