Extraction and Recovery of 4-Bromophenol using Kerosene as a Bulk Liquid Membrane
In this work, extraction and recovery of 4-Bromophenol was carried out from aqueous solution using kerosene as a bulk liquid membrane (BLM). A small fraction of carrier (Aliquat 336) was used with kerosene (solvent) as membrane phase. The predefined concentration of sodium hydroxide was utilized as stripping phase agent. The optimum operating parameters such as initial feed and stripping phase concentrations and extraction time were monitored during this study at constant pH, stirring speed and temperature. The pH of the feed phase was controlled by adding 0.1 N HCl or 0.1 M NaOH solution. The concentrations of 4-Bromophenol were analyzed using visible spectrophotometer using 4-aminoantipyrine standard method. The optimum process parameters for 4-Bromophenol transport were: 0.4% (v/v) Aliquat336 in kerosene as membrane phase, 0.5 Nsodium hydroxide as stripping agent, and 2.0 pH of feed phase for 20 to 100 mg/l (4-Bromophenol) as initial feed phase concentrations. The optimum extraction and recovery of 4-Bromophenol was found to be 91% and 71%, respectively. The obtained results demonstrate that kerosene can be used as BLM for successful extraction and recovery of 4-Bromophenol from aqueous solution.