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Journal of Shanghai University（Natural Science Edition） ›› 2010, Vol. 16 ›› Issue (5): 522-525.

• Environmental and Chemical Engineering • Previous Articles     Next Articles

Synthesis of Glyceryol Triacetate by Glycerol Extracted from Waste Water

  

  1. 1. School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China; 2. Shanghai Lüming Environmental Protection Technology Co., Ltd., Shanghai 201107, China
  • Received:2010-07-02 Online:2010-10-30 Published:2010-10-30

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Abstract:

 Waste water from enzymatic biodiesel technology containing 5% glycerol was treated by alkali treatment, vacuum distillation, removing colloidal, and vacuum distillation to collect glycerol of purity up to 90.43%. The glycerol reacted with acetic acid (material ratio 1∶5) to get glyceryol triacetate with phosphotungstic acid catalyst (accouting for 1.6% of glycerol), toluene as water-carrying agent, at 110 ℃. Thus more than 90% glyceryol triacetate were produced in 6 hours.  

Key words: biodiesel; glycerin; glyceryl triacetate; phosphotungstic acid

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