Abstract:
This work studied the parameters that influenced on the separation of arsenic ions from produced water via hollow fiber contactor modules.The studied parameters were initial concentration of arsenic ions in the feed solution, feed pH separation time, types of extractants (Aliquat 336, Cyanex 921 and Cyanex 923), flow rates of feed solution as well as concentration of the stripping solution. The results indicated that the highest extraction and stripping of arsenic ions were 92% and 30%, respectively using 0.4 M Aliquat 336 mixed with 0.04 M Cyanex 921. In addition, the optimum conditions of other parameters were as follows: the initial concentration of arsenic ions in the feed solution of 0.5 mg/L, the feed pH of 6, the feed flow rate of 100 mL/min, and the stripping concentration of 0.1 M. The synergistic coefficient (S.C.) was obtained and found to be 0.325, which demonstrated this system performing the synergism extraction effect.