Study on Upgrading and Further Usage of Glycerol from Waste Water

Abstract:

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Waste water from enzymatic biodiesel technology (contained glycerol 5%) is treated as following: Firstly, waste water is filtered with a gauze, add KOH to PH=7~8, and filter to remove salt soap. Secondly, the processed liquid distil at 50°C in Rotary Evaporator vacuum to remove most of water and methanol, then concentrated solution use plinthic flocculants (mass ratio of 100:1), stirring at 70°C to eliminate colloid. Finally, at 180°C, 0.8 kPa to vacuum distil to collect glycerol of purity up to 90.43%.The glycerol react with acetic acid to get glycerol triacetate with phosphotungstic acid catalyst, toluene as water-carrying agent. Thus comes out the yield of more than 90% glycerol triacetate in 6 hours.

Info:

Periodical:

Advanced Materials Research (Volumes 383-390)

Edited by:

Wu Fan

Pages:

4511-4515

DOI:

10.4028/www.scientific.net/AMR.383-390.4511

Citation:

X. Y. Guo et al., "Study on Upgrading and Further Usage of Glycerol from Waste Water", Advanced Materials Research, Vols. 383-390, pp. 4511-4515, 2012

Online since:

November 2011

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Price:

$35.00

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