Dehydration of diethylene glycol using a vacuum membrane distillation process

Tai Hsiang Chen; Yao Hui Huang

doi:10.1016/j.jtice.2017.02.028

Dehydration of diethylene glycol using a vacuum membrane distillation process

Tai Hsiang Chen, Yao Hui Huang

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The use of a porous PTFE membrane (pore size = 0.2 μm) in the dehydration of diethylene glycol (DEG) by a vacuum membrane distillation (VMD) method was studied. Experiments on VMD for the treatment of 85 wt. % aqueous DEG were carried out at temperatures from 70 to 90 °C, with stirring from 600 to 1700 rpm and vacuum degrees from 650 to 715 torr. The water contents in the feed and the permeate solution were detected by Karl Fisher titration. VMD for 100 min reduced the water content in the feed solution from 15 wt. % to 2 wt. % at 90 °C, 1500 rpm and 715 torr. The separation factor increased from 2500 to 9500 and the total flux declined from 18.5 to 1 kg/m² h.

Original language	English
Pages (from-to)	233-237
Number of pages	5
Journal	Journal of the Taiwan Institute of Chemical Engineers
Volume	74
DOIs	https://doi.org/10.1016/j.jtice.2017.02.028
Publication status	Published - 2017 May 1

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering

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10.1016/j.jtice.2017.02.028

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abstract = "The use of a porous PTFE membrane (pore size = 0.2 μm) in the dehydration of diethylene glycol (DEG) by a vacuum membrane distillation (VMD) method was studied. Experiments on VMD for the treatment of 85 wt. % aqueous DEG were carried out at temperatures from 70 to 90 °C, with stirring from 600 to 1700 rpm and vacuum degrees from 650 to 715 torr. The water contents in the feed and the permeate solution were detected by Karl Fisher titration. VMD for 100 min reduced the water content in the feed solution from 15 wt. % to 2 wt. % at 90 °C, 1500 rpm and 715 torr. The separation factor increased from 2500 to 9500 and the total flux declined from 18.5 to 1 kg/m2 h.",

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AB - The use of a porous PTFE membrane (pore size = 0.2 μm) in the dehydration of diethylene glycol (DEG) by a vacuum membrane distillation (VMD) method was studied. Experiments on VMD for the treatment of 85 wt. % aqueous DEG were carried out at temperatures from 70 to 90 °C, with stirring from 600 to 1700 rpm and vacuum degrees from 650 to 715 torr. The water contents in the feed and the permeate solution were detected by Karl Fisher titration. VMD for 100 min reduced the water content in the feed solution from 15 wt. % to 2 wt. % at 90 °C, 1500 rpm and 715 torr. The separation factor increased from 2500 to 9500 and the total flux declined from 18.5 to 1 kg/m2 h.

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Dehydration of diethylene glycol using a vacuum membrane distillation process

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