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Content archived on 2024-06-10

New membranes and integrated hybrid membrane systems for VOCS removal from industrial contaminated water


Original research objectives

VOC's recovery from water using a hybrid system combining a stripper and a membrane separation unit in a close loop. The research focussed on
a) organoselective membrane materials in relation with the VOC nature (water soluble, aromatic or chlorinated)
b) polymer optimisation and membrane module preparation, and
c) study of the integrated hybrid stripper-membrane process for dimethylketone, toluene and dichloromethane.

Polymers of interest to be synthesised and studied, including monomers, were:
- inorganic backbone polyphosphazene;
- rubbery materials containing dimethylsiloxane units;
- super glassy structures like poly[1-(trimethylsilyl)-1-propyne] PTMSP. Investigations of Sorption and Permeation characteristics for N2, VOC's as pure compounds or mixtures for a broad range of activity. The design, construction and modelling of a membrane module suitable to treat up to 1m3/h with gas flux up to 800 NL/h with low VOC concentration, i.e. 0.2-0.6 vol.

Expected deliverables

New organophilic membrane materials based on inorganic backbone polymers with improved selectivity of separation in relation to (organic vapour)/(water vapour)/air mixtures: basic data on selective gas/vapour transfer through membranes with balanced hydrophilic/organophilic properties. New composite membranes based on promising materials for application of gas phase wastewater decontamination and related hybrid prototype system construction New technological approach integrated with membrane technology to the treatment of waste water under low energy consumption and null contaminants release; theoretical modelling of gas phase process of different kinds of liquid purification; bench scale design and experimental results of suggested hybrid technology of VOCs recovery from water. Contractual technical issues & Publications.
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Participants (5)