PHENOLIC WASTEWATER TREATMENT BY SUPPORTED LIQUID MEMBRANE USING DIFFERENT COOKING OILS AS LIQUID MEMBRANE |
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| Authors: | Mohammad Peydayesh Pezhman Kazemi Mohammad Sadegh Nabavi |
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| Affiliation: | 1. Research Centre for Membrane Separation Processes, Faculty of Chemical Engineering , Iran University of Science and Technology (IUST) , Narmak , Tehran , Iran;2. Department of Chemical Engineering , Islamic Azad University, South Tehran Branch , Tehran , Iran |
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| Abstract: | Transport of phenol through a flat sheet supported liquid membrane (SLM) containing cooking oil as liquid membrane (LM) was investigated. Factors affecting permeation of phenol such as membrane phase, support material, feed phase pH, stripping phase concentration, stirring speed, and initial concentration of phenol were studied. It was found that these parameters strongly influence phenol removal efficiency; PTFE membrane as support material, grape seed oil as liquid membrane, feed pH of 2.0, initial phenol concentration of 100 mg/L, stirring speed of 350 rpm, and 0.2 M sodium hydroxide as effective stripping agent were found as the best conditions for greater phenol transport. Under these conditions, permeability was found to be 7.46 × 10?6 m/s. After 10.5 h, phenol was completely removed from the feed phase to strip phase. According to stability experiments, it was observed that the SLM is stable after 22 h. Thus, the use of cheap, nontoxic, and naturally oil as a novel and green membrane for recovery of phenol from wastewater was demonstrated. |
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| Keywords: | Cooking oils Phenolic wastewater treatment Supported liquid membrane |
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