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Polymer-Plastics Technology and Materials Volume 58, 2019 - Issue 3
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Articles

Investigation on Performance of PDMS-Graphene/PES Hybrid Membrane for Pervaporative Separation of Phenol from Aqueous Streams

Saqar RahmaniPetroleum Engineering Department, Chemistry and Chemical Engineering Research Center of Iran, Tehran, Iran
,
Hamid Reza MortahebPetroleum Engineering Department, Chemistry and Chemical Engineering Research Center of Iran, Tehran, IranCorrespondence[email protected]
,
Mohammad Reza OmidkhahPetroleum Engineering Department, Chemistry and Chemical Engineering Research Center of Iran, Tehran, Iran
&
Azam Khodadadi DizajiPetroleum Engineering Department, Chemistry and Chemical Engineering Research Center of Iran, Tehran, Iran
Pages 305-315 | Published online: 29 May 2018
 
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ABSTRACT

The pervaporative performances of pristine polydimethylsiloxane (PDMS) membrane and modified one by hybridizing with graphene nanosheets (PDMS-G) were evaluated for phenol removal from aqueous solutions. The incorporation of hydrophobic graphene nanosheets could enhance the process performance. The optimum performance was determined at 0.2 wt% crosslinker concentration and 0.2 wt% graphene content with a significant improvement in the separation factor up to 42.35. The enhanced separation factor can be attributed to optimized interfacial free volume in the structure of the membranes and formation of π-π interactions between graphene and phenol. The effects of operating parameters on separation performance were also evaluated.

GRAPHICAL ABSTRACT

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