Removal of heavy metals from wastewater using micellar enhanced ultrafiltration technique: a review

Abstract

Application of Micellar enhanced ultrafiltration (MEUF) for the removal of different heavy metals has been reviewed. It is considered an economical alternative available to the conventional membrane separation process, because it reduces the requirement of higher pressure and high membrane costs. MEUF is a separation processes which uses surfactants and ultrafiltration membranes to remove multivalent ions from wastewater with high percent rejection using electrostatic attraction between metals and micelles.This review seeks to define the effect of the operating parameters, i.e., applied pressure, surfactant concentration, feed temperature, metal ion concentration, feed flow rate, operating time etc. on the removal of metal ions. Emphasis is given to the application of MEUF for the removal of single metal ions, multiple metal ions and different metals along with other organic materials. Also, this review focuses on studies related to micelle formation, attraction between metal ions and micelles, and recovery of surfactants for future research.

Adsorption of Ni(II) from model solutions using co-precipitated inorganic oxides

“…The increasing problem of inorganic pollution of water, mainly with heavy metals, has caused great interest in technological methods enabling the removal of these compounds. Commonly used methods are precipitation (Lewis 2010), membrane techniques (Mungray et al 2012), ion exchange (Maturana et al 2011), extraction (Regel-Rosocka et al 2006), and adsorption (Chen et al 2012); see Fig. 1.…”

Heavy Metal Removal from Liquid Wastes by Using Micellar-Enhanced Ultrafiltration

“…However, besides surfactant concentration and nature, operating parameters, like transmembrane pressure, process temperature, metal ion concentration, feed flow rate, pH value, and operating time, have to be investigated to optimize the process, as reported in recent reviews (Bade and Lee 2011;Mungray et al 2012). …”

“…Cobalt in traces favors red blood cell production, but it is a toxic metal if ingested in high concentrations (Karate and Marathe 2008). In a recent review (Mungray et al 2012), the discharge limit of various heavy metals were reported, together with their potential health effects and common sources, stated by EPA in 1994(CFR 1994.…”

A comprehensive study of Cd(II) ions removal utilizing high-surface-area binary Mg–Si hybrid oxide adsorbent

“…Among many technologies, which enable the removal of impurities from aqueous solutions, adsorption (Du et al 2011;Salam and Burk 2010;Zheng et al 2009), ion exchange, photocatalysis, filtration, coagulation, chemical precipitation, and electrodialysis or reverse osmosis (Chen et al 2012;Gupta et al 2012a, b, c;Maturana et al 2011;Mungray et al 2012), can be mentioned. Nonetheless, it is the adsorption process that provides scientists with a full spectrum of possibilities, in view of the wide range of available adsorbents supplied by nature (''natural adsorbents'') and waste materials both known as low-cost adsorbents (Gupta and Nayak 2012;Jain et al 2003;Mittal et al 2009aMittal et al , b, 2010a.…”