By catalysis 2 step is eutrophication Transesterification reaction using formic acid as well as a catalytic Phoenix consulting, to decrease free fatty acid that affects the quality of biodiesel produced.
By catalyst 2 steps reactive esterified systems. Acid using sulfuric acid as a catalyst. To reduce free fatty acids affect the quality of biodiesel produced.
The procedure is 2 catalytic esterification reaction Using sulfonated acid Theosophical Rick as catalyst In order to reduce free fatty acid on the quality of biodiesel production