G. S. Golubev, A. V. Balynin, I. L. Borisov, A. V. Volkov
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Thermopervaporation with a Porous Condenser for Triethylene Glycol Dehydration
For the task of triethylene glycol (TEG) dehydration by thermopervaporation with a porous condenser (TPV-PC), the transport and separation characteristics of known commercial composite membranes with hydrophobic and hydrophilic properties are experimentally studied with respect to both the individual components (water, triethylene glycol) and TEG–water binary mixtures with various compositions. It is found that the most effective membrane for the TPV-PC dehydration of TEG is a PolyAn hydrophobic membrane (PolyAn GmbH, Germany) which demonstrates the maximum values of the permeate flux and pervaporation separation index. During the thermopervaporation separation of a TEG–water mixture (the water content in TEG of 30 wt %), a PolyAn membrane demonstrates the values of the water/TEG separation factor of 74 000 and permeate flux of 0.95 kg m−2 h−1. A long-term experiment on drying of 5 kg of a TEG–water solution is for the first time carried out using a PolyAn membrane. It turns out to be possible to reduce the water content from 30 down to 5 wt % over 113 hours of the thermopervaporation experiment on the dehydration of TEG.
期刊介绍：
The journal Membranes and Membrane Technologies publishes original research articles and reviews devoted to scientific research and technological advancements in the field of membranes and membrane technologies, including the following main topics:novel membrane materials and creation of highly efficient polymeric and inorganic membranes;hybrid membranes, nanocomposites, and nanostructured membranes;aqueous and nonaqueous filtration processes (micro-, ultra-, and nanofiltration; reverse osmosis);gas separation;electromembrane processes and fuel cells;membrane pervaporation and membrane distillation;membrane catalysis and membrane reactors;water desalination and wastewater treatment;hybrid membrane processes;membrane sensors;membrane extraction and membrane emulsification;mathematical simulation of porous structures and membrane separation processes;membrane characterization;membrane technologies in industry (energy, mineral extraction, pharmaceutics and medicine, chemistry and petroleum chemistry, food industry, and others);membranes and protection of environment (“green chemistry”).The journal has been published in Russian already for several years, English translations of the content used to be integrated in the journal Petroleum Chemistry. This journal is a split off with additional topics.
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