GO crosslinked hydrogel nanocomposites of chitosan/carboxymethyl cellulose – A versatile adsorbent for the treatment of dyes contaminated wastewater

Purification of Contaminated Wastewater With the Help of Graphene Composites With Hydrogels

“…Graphene oxide can also be crosslinked with chitosan (CS) and carboxymethyl cellulose (CMC) for synthesized nanocomposite hydrogels. Mittal et al synthesized these composites and used blue and anionic methyl orange dyes from contaminated wastewater, as adsorbents for removing cationic methylene [62]. Methylene blue from contaminated wastewater was also successfully removed by Liu et al [63].…”

Graphene-Based Materials Immobilized within Chitosan: Applications as Adsorbents for the Removal of Aquatic Pollutants

“…A number of synthetic polymers, with well-defined structures, and various biopolymers, with less defined structures, have been combined with chitosan and GO. The polymers employed include poly(vinyl alcohol) (PVA) [226], polyacrylic acid (PAA) [227], polylactic acid (PLA) [201], cellulose (C) [228], carboxymethyl cellulose (CMC) [229] and alginate [169]. The performance of these chitosan blended polymer systems as a matrix for GO is summarized in Table 6, where it is readily evident that these systems have good adsorption capacity.…”

“…Efficient regeneration, without significant loss in the adsorption capacity, is not only necessary in terms of operating costs, but is also essential in the recovery of the adsorbates and the prevention of secondary waste. The desorbing agents employed in the regeneration of the GO/CS-based adsorbents are normally acids [229], bases [134,229], chelating agents, such as EDTA [213], or organic solvents, such as ethanol [166,198], methanol [176] or acetone [92]. The selection of the desorbing agent depends on the nature of the adsorbate.…”

Effect of amino acid on the surface adsorption and micellar properties of surface active ILs varying in cationic head groups

“…Nitrogen-containing surfactants (i.e., N-heterocycles) including imidazolium, pyrrolidinium, pyridinium, piperidinium, morpholinium, and piperazidinium based ILs, have been investigated by several researchers owing to their unique structures and exceptional surface properties, which makes them different from the traditional ionic surfactants and hence, their aggregation behavior have been investigated in an aqueous medium [ 15 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. These aggregates are being widely studied not only because of their fundamental importance but also for their practical applications in numerous fields such as the synthesis of nanoparticles, microemulsions, organic or bio-organic molecules, etc [ 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. Furthermore, the physicochemical parameters of such ionic liquid surfactants could be modified by adding various external additives such as organic additives, salts, proteins, drugs, carbohydrates, traditional surfactants, etc [ 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 ].…”