Synthesis and characterization of humic acid immobilized-polymer/bentonite composites and their ability to adsorb basic dyes from aqueous solutions

Synthesis and characterization of collagen-based hydrogel nanocomposites for adsorption of Cd2+, Pb2+, methylene green and crystal violet

“…Moreover, the q max values show that the physiochemical interaction of MG and Pb 2+ with active sites of the samples is stronger than that of CV and Cd 2+ . The values of Freundlich exponent n, which is a function of the strength of adsorption in the adsorption process, for all pollutants are in the range of n > 1, indicating a favorable adsorption [31][32][33]. The greater values of n for MG and Pb 2+ also confirmed the calculated result of q max from Langmuir isotherm.…”

Equilibrium, thermodynamics and process design to minimize adsorbent amount for the adsorption of acid dyes onto cationic polymer-loaded bentonite

“…As it is a novel class of adsorbent, the preparation of cationic polymer/bentonite and the adsorption properties for the removal of anionic and nonionic organic pollutants from wastewater have been investigated by several researchers [12][13][14]. Recently, with the in-depth study of polymer/bentonite as adsorbent, several researchers begin to investigate the application of novel polymer/bentonite complexes for dye removal [15,16]. Polyepicholorohydrin-dimethylamine (EPI-DMA), a water-soluble cationic polyelectrolyte with amidocyanogen and ammonium functional groups, has been successfully applied in the treatment of printing and dyeing wastewater and also been proved to have the potential to render bentonite suitable for the removal of organic contaminants [17][18][19].…”

Forward (M2+−H+) and reverse (H+−M2+) ion exchange kinetics of the heavy metals on polyaniline Ce(IV) molybdate: A simple practical approach for the determination of regeneration and separation capability of ion exchanger

“…Various organic-inorganic type composite cation exchange materials have been developed by sol-gel methods in different laboratories [1][2][3][4][5][6][7][8][9][10][11][12][13]. However, special attention has been given in our laboratory for synthesis and characterization of ion-exchange stationary phases by the incorporation of electrically conducting as well as non conducting polymers into inorganic ion-exchangers to create new 'organic-inorganic' composite cation-exchanger stationary phases suitable for column operation during wastewater treatment [14][15][16][17].…”