Iminodiacetic acid functionalized cation exchange resin for adsorptive removal of Cr(VI), Cd(II), Ni(II) and Pb(II) from their aqueous solutions

Defluoridation of water by Tea - bag model using La 3+ modified synthetic resin@chitosan biocomposite

“…The wet La-IDAMP resin was poured into the clear chitosan solution. This solution was mixed well using a stirrer for 2 h and subsequently dried in an oven at 60 ° C for 3 days to get CS@La-IDAMP composite [18,19]. The dried CS@La-IDAMP composite was pulverized to uniform size (60 mesh) and then used for defluoridation studies.…”

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“…Cadmium toxicity cause renal disturbances, lung problems, bone lesions, cancer and hypertension in humans [19][20][21] Thus, the removal of these toxic metals from wastewater is a crucial issue. processes like adsorption, coagulation, co-precipitation, ion-exchange and oxidation-reduction process have been reported in literature for treatment of arsenic and removal of heavy metals from wastewater [22][23][24][25][26][27][28][29]. Among these processes, absorption is one of the promising methods.…”

Enhanced adsorption of cadmium ions by 3D sulfonated reduced graphene oxide

“…Considering the irreversible destruction to graphene surfaces and its low efficiency of sulfonation with sulfuric acid, 3D-SRGO was synthesized by direct anchoring of sulfonic acid-containing aryl radicals to the surfaces of reduced graphene oxide sheets via Gomberg-Bachmann Reaction [40]. Because of the good affinity between sulfo-group and heavy metal ions [41], large specific surface area, porous structure and rich surface negative charge, 3D-SRGO should be an ideal candidate of the excellent heavy metal ions absorbent. However, the fabrication of high-quality 3D-SRGOs and their speedy capture of heavy metal ions with high capacity have not yet been demonstrated.…”