Absorption of volatile organic compounds into polydimethylsiloxane: Phase equilibrium computation at infinite dilution

Edison Muzenda, Corina M. Mateescu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Group contribution methods such as the UNIFAC are very useful to researchers and engineers involved in synthesis, feasibility studies, design and optimization of separation processes. They can be applied successfully to predict phase equilibrium and excess properties in the development of chemical and separation processes. The main focus of this work was to investigate the possibility of absorbing selected volatile organic compounds (VOCs) into polydimethylsiloxane (PDMS) using three selected UNIFAC group contribution methods. Absorption followed by subsequent stripping is the predominant available abatement technology of VOCs from flue gases prior to their release into the atmosphere. The original, modified and effective UNIFAC models were used in this work. The thirteen selected VOCs that have been considered in this research are: pentane, hexane, heptanes, trimethylamine, toluene, xylene, cyclohexane, butyl acetate, diethyl acetate, chloroform, acetone, ethyl methyl ketone and isobutyl methyl ketone. The computation was done for solute VOC concentration of 8.55×10 -8 which is well in the infinite dilution region. The results obtained in this study compare very well with those published in literature obtained through both measurements and predictions. The phase equilibrium obtained in this study show that PDMS is a good absorbent for the removal of VOCs from contaminated air streams through physical absorption.

Original languageEnglish
Pages (from-to)758-762
Number of pages5
JournalWorld Academy of Science, Engineering and Technology
Volume74
Publication statusPublished - Feb 2011

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Absorption of volatile organic compounds into polydimethylsiloxane: Phase equilibrium computation at infinite dilution'. Together they form a unique fingerprint.

  • Cite this