Abstract—Temperature dependence of specific retention volumes (
) of 13 volatile organic compounds (VOCs) of environmental importance between the gas and liquid stationary phase (polydimethysiloxane) (PDMS) were studied using the gas liquid chromatographic technique (GLC). Temperature was varied from 303.15K to 423.15K to allow transport calculations for different seasons. Four PDMS polymers with average molecular weight ranging from 760 to 13 000 were used as solvents. The results of this work confirm that PDMS is well suited for VOCs scrubbing from waste gas streams. Linear plots of log Vgagainst 1/T were obtained in all cases permitting predictions and interpolations to temperatures not studied here. Also dependable enthalpies and entropies of solute transfer from the mobile phase to the stationary phase can be calculated. The specific retention volumes reported in this work are in agreement with literature for similar systems. Efforts were taken to ensure the best possible accuracy and trace the possible sources of error. A gas liquid chromatographic system which secured a simple retention mechanism and showed reproducible solute retention over a long period of time was devised.
Index Terms—Environmental, scrubbing, specific retentionvolume, stationary phase, waste gas streams
The authors are with the Department of Chemical Engineering, Faculty of Engineering and the Built Environment, University of Johannesburg, Doornfontein, Johannesburg 2028, (e-mail: emuzenda@uj.ac.za; fntuli@ uj.ac.za).
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Cite: Edison Muzenda and Freeman Ntuli, "Temperature Effect on Volatile Organic Compounds –Polydimethylsiloxane Interactions," International Journal of Chemical Engineering and Applications vol. 2, no. 6, pp. 376-380, 2011.
