Mortaheb Hamid R, Amini Mohammad H, Sadeghian Fateme, Mokhtarani Babak, Daneshyar Hesam
Chemistry and Chemical Engineering Research Center of Iran, P.O. Box: 14335-186, Tehran, Iran.
J Hazard Mater. 2008 Dec 30;160(2-3):582-8. doi: 10.1016/j.jhazmat.2008.03.095. Epub 2008 Mar 27.
Removal of phenol from wastewater using emulsion liquid membrane (ELM) is studied in present study. A new polyamine-type surfactant was synthesized and used for stabilizing of the emulsion phase. The results for the emulsion made by the synthesized surfactant showed much better stability and performance in the separation process compared to that by conventionally used Span 80. To determine the optimum operation conditions, the effect of several parameters such as emulsifier concentration, concentration of NaOH in the internal phase, oil to internal phase volume ratio, mixing intensity, temperature, solvent type, and stabilizer concentration have been investigated. It was found that under the optimum conditions, more than 98% of phenol can be removed in a single-stage process. The removal efficiency can be increased to 99.8% in a two-stage process.
本研究对采用乳化液膜（ELM）从废水中去除苯酚进行了研究。合成了一种新型多胺类表面活性剂并用于稳定乳液相。与传统使用的Span 80相比，由合成表面活性剂制成的乳液在分离过程中表现出更好的稳定性和性能。为了确定最佳操作条件，研究了乳化剂浓度、内相中NaOH浓度、油相与内相体积比、混合强度、温度、溶剂类型和稳定剂浓度等几个参数的影响。结果发现，在最佳条件下，单级过程中苯酚的去除率可超过98%。在两级过程中，去除效率可提高到99.8%。
