Purificação da glicerina residual da produção de biodiesel

Abstract

Glycerin is a byproduct of the transesterification of animal fats or vegetable oils to produce biodiesel, which corresponds to about 10% of the total volume of biodiesel produced. When purified with a purity above 99%, is widely used in food, pharmaceutical and cosmetic industries. This study examined the feasibility of purification of residual glycerol from biodiesel production from young soybean oil, residual oil, soybean oil, chicken oil and animal (bovine and porcine mixture). We conducted a characterization of residual oils for evaluation of their degradation level, performing the synthesis of biodiesel using basic catalysis to obtain glycerine. The purification process was performed by treating the samples with ion exchange resins by three distinct processes. Then analyzes were performed to determine the purity, detection and observation of possible contaminants yield of the processes proposed. It was observed that the purified glycerin with the resins had a purity above 90%, demonstrating a good efficiency of the process used.