مقاله Biodiesel production by two-stage transesterification with ethanol by washing with neutral water and water saturated with carbon dioxide : تی پی بین

خلاصه مقاله

Industrial production of ethyl esters is impeded by difficulties in purifying the product due to high amounts of soap formed during transesterification. A simple biodiesel wash process was developed that allows successful purification of samples containing high amounts of soap. The key step was a first washing with neutral water, which removed the soaps without increasing the acidity or affecting the process yield. Afterward, the biodiesel was washed with water saturated with CO₂, a mild acid that neutralized the remaining soaps and extracted impurities. The acidity, free-glycerine, methanol and soaps concentrations were reduced to very low levels with high efficiency, and using non-corrosive acids. Independently of the initial acidity, it was possible to obtain biodiesel within EN14214 specifications. The process included the recovery of soaps by hydrolysis and esterification, making it possible to obtain the theoretical maximum amount of biodiesel.

نویسندگان

G. Mendow [ Instituto de Investigaciones en Catálisis y Petroquímica-INCAPE-(FIQ-UNL, CONICET), Santiago del Estero 2654, 3000 Santa Fe, Argentina ]

N.S. Veizaga [ Instituto de Investigaciones en Catálisis y Petroquímica-INCAPE-(FIQ-UNL, CONICET), Santiago del Estero 2654, 3000 Santa Fe, Argentina ]

B.S. Sánchez [ Instituto de Investigaciones en Catálisis y Petroquímica-INCAPE-(FIQ-UNL, CONICET), Santiago del Estero 2654, 3000 Santa Fe, Argentina ]

C.A. Querini [ Instituto de Investigaciones en Catálisis y Petroquímica-INCAPE-(FIQ-UNL, CONICET), Santiago del Estero 2654, 3000 Santa Fe, Argentina ]

کلمات کلیدی

Biodiesel Ethanol Transesterification Purification Production process

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Bioresource Technology

The journal's aim is to advance and disseminate knowledge in all the related areas of biomass, biological waste treatment, bioenergy, biotransformations and bioresource systems analysis, and technologies associated with conversion or production.

حوزه های تحت پوشش : Bioresource Technology