Investigation of process performance and fouling mechanisms in micellar-enhanced ultrafiltration of nickel-contaminated waters

Adsorption of surfactant micelles and Cd2+/Zn2+ in micellar-enhanced ultrafiltration

“…MEUF was first used in the treatment of heavy metals in wastewater in the 1970s [5], and it has since been found that MEUF can be used to separate almost all heavy metal ions, including Cd 2+ , Ni 2+ , Zn 2+ , Cr 3+ , Mn 2+ , Pb 2+ , CrO 4 3− , Fe 3+ , Cu 2+ , and Fe(CN) 6 3− [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. The surfactants used in MEUF range from single ionic surfactants, such as sodium dodecyl sulfate (SDS), cetyltriethylammnonium bromide (CTAB), dichloroacetic acid (DCA), trichloroacetic acid (TCA), sodium salt of 2-(2-carboxyethyl)-3-decyl maleic anhydride (DCMA-3Na), tetradecyl trimethyl ammonium bromide (TTAB), and polyoxyethylene nonyl phenyl ether (PONPE) [20][21][22][23][24][25][26], to mixed surfactants, such as SDS and polyoxyethylene octyl phenyl ether (Tritonx-100), SDS and polyoxyethyleneglycol dodecyl ether (Brij35), and SDS and nonylphenol ethoxylated (NPE) [27,28].…”

Interrelated Analysis of Performance and Fouling Behaviors in Forward Osmosis by Ex-Situ Membrane Characterizations

“…In recent years, more economical operation of membrane processes is to be taken into account based on lower energy and membrane costs in practice. At this point, understanding the reasons lying under the fouling phenomena as related with a membrane's performance is to be rather valuable task in terms of scientific and technological developments of these processes (Danis & Aydiner, 2009). However, non-generalization course of the fouling during a membrane filtration necessitates the use of either modeling tools or specific analyses for clarifying meaningful performance-fouling relationships in each specific application.…”

Flux decline during cross flow membrane filtration of electrolytic solution in presence of charged nano-colloids: A simple electrokinetic model

“…Processes like micellar or polyelectrolyte enhanced ultrafiltration for removal of trace metals and organics also encounter such conditions [4][5][6][7][8][9][10]. Situations like this are also envisioned during membrane filtration based treatment of produced water from petroleum extraction and refining, which contains organic contaminants, polyelectrolytes and ions in conjunction with fine clays [11].…”