Chromium(VI) removal in a semi-continuous process of hollow fiber membrane with organic extractants

Treatment of arsenic ions from produced water through hollow fiber supported liquid membrane

“…Taking into account a promising metal separation and recovery technique from aqueous solutions, supported liquid membranes (SLMs), particularly hollow fiber supported liquid membrane (HFSLM) is of great interest due to the use of carrier for the transport mechanism resulting in highly selectivity and rapid transportation of the desired metal ions [4][5][6][7][8][9][10][11]. The simultaneous extraction and stripping in a single unit operation of liquid membrane system is very remarkable.…”

Efficient transport and selective extraction of Cr(VI) from waste pickling solution of the stainless steel-cold rolled plate process using Aliquat 336 via HFSLM

“…Thus, in this current work Aliquat 336 and TOA were used to compare with TBP and the mixture of Aliquat 336 and TBP for the extraction of Cr(VI) from the spent pickling solution of the stainless steel-cold rolled plate process. In case of the stripping solution, most researchers used NaCl and NaOH [8][9][10]12,[14][15][16][17][18][19] so both NaCl and NaOH were experimented. The optimum condition using the selected extractant and stripping solution will be finally identified in this work.…”

“…[18], it was reported that TBP was an efficient carrier to extract and recover Cr(VI) from plating wastewater through supported liquid membrane (SLM). In addition, TBP can mix with either basic or acidic extractant for an investigation of the synergistic effect as it is a neutral extractant [16,29]. It was found that the mixture of D2EHPA and TBP enhanced the extraction efficiency of Cr(VI) [16].…”

“…In addition, TBP can mix with either basic or acidic extractant for an investigation of the synergistic effect as it is a neutral extractant [16,29]. It was found that the mixture of D2EHPA and TBP enhanced the extraction efficiency of Cr(VI) [16]. How-…”

Simple and selective extraction process for chromium (VI) in industrial wastewater

“…Mixed extractants such as DEHPA, TBP, LIX79 and trioctylamine have been explored for the removal of chromium (VI). An extraction efficiency of 84% could be achieved [20]. Synthetic resins such as Dowex M4195 [21] and diaion SP-850 [22] have also been utilized for the removal of chromium in water samples.…”