In the present study, the feasibility and the efficiency of the pervaporation process for treating ABS manufacturing wastewaters was investigated. A laboratory scale pervaporation system with flat sheet membranes was used in cross-flow mode. The influences of different operating conditions on the separation performance of the pervaporation process were investigated by measuring the BOD5, COD, permeation flux and enrichment factor. It was found that the polydimethylsiloxane (PDMS) membrane was selective toward styrene and acrylonitrile, and the VOC removal efficiency improved as the feed flow rate and temperature increased while an increase in the permeate pressure and membrane thickness led to a decrease in the permeation flux. It was also indicated that styrene and acrylonitrile selectivity had a different behaviour when the permeate pressure raised. The results showed that pollution removal by the pervaporation was significant and the highest pollution removal of approximately 99% was obtained after 6 h.

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