Optimization of biodiesel production from acid oil via acid catalysis

Acid oil having free fatty acids and glycerides produced through soybean soapstock can reduce the cost of biodiesel production. Optimization of H₂SO₄ catalyzed process was completed by carrying out a central composite design and a quadratic polynomial model was obtained. When methanol/oil molar ratio was 35.49:1, catalyst was 11.59% relative to the weight of acid oil, reaction time was 4.58 hours, and the ester content of product was 95.03%, close to the theoretical critical value of 95.85%. This study provides a reliable theoretical basement for commercial biodiesel production from acid oil. This electronic document is a "live" template. The various components of your paper [title, text, heads, etc.] are already defined on the style sheet, as illustrated by the portions given in this document.