Adsorption and desorption of phosphate and nitrate ions using quaternary (polypropylene-g-N,N-dimethylamino ethylmethacrylate) graft copolymer

Adsorption of Cr(VI) using silica-based adsorbent prepared by radiation-induced grafting

“…Other kinds of adsorbents with amino functional groups have been reported in literature. The results have also shown that the adsorption at the pH range of 1.0-6.0 can be mainly attributed to the electrostatic attraction, while at higher or lower pH, the chelation interaction, hydrogen bonding and the weak van der Waals forces could be responsible for the adsorption [25,26,[44][45][46][47].…”

“…Dimethylaminoethyl methacrylate (DMAEMA) has been grafted onto various matrix materials by radiation technique [20][21][22][23][24]. As tertiary and quaternary amino groups can be easily incorporated into matrix materials, the DMAEMA grafted materials have also been utilized for adsorption and separation of heavy metal ions [21,22,25]. Moreover, the hydrogels prepared by radiation crosslinking of DMAEMA has displayed a sound ability to adsorb metal ions like ReO 4 − [26].…”

The study of adsorption characteristics Cu2+ and Pb2+ ions onto PHEMA and P(MMA-HEMA) surfaces from aqueous single solution

“…Generally, 2-hydroxyethyl methacrylate is chosen as the responsive monomer. Polymers with the interpenetration network structure were also studied to investigate adsorption of heavy metal ions [31,32].…”

Nickel adsorption by sodium polyacrylate-grafted activated carbon

“…The efficiency of adsorption depends on many factors, including the surface area, pore size distribution, polarity, and functional groups of the adsorbent [3][4][5]. Cheap adsorbents can be developed for treating wastewaters by various methods, which include hydrolysis [6,7], esterification [7], saponification [8], grafting by chemical methods [9][10][11][12][13] or irradiation by UV or ␥-rays [14][15][16][17] of abundant natural or waste materials. For example, activated carbon can be used to treat toxic substances, such as nickel [18,19], copper [20,21], zinc [20,22], toluene [22], cyanide [20,23], dyes [24,25] in commercial operations, because of its highly porous structure and large surface area available for adsorption or chemical reaction.…”