Cr(III) REMOVAL FROM AQUEOUS SOLUTION BYION EXCHANGE RESINS CONTAINING CARBOXYLIC ACID AND SULPHONIC ACID GROUPS

Abstract

Ion exchange resins based on the water-insoluble polymers poly(acrylamide-co-styrene sodium sulfonate) (P(AAm-co-ESS)), poly(2-acrylamide-2-methyl-1-propanesulfonic acid-co-acrylicacid) (P(APSA-co-AAc)),poly(2-acrylamidoglycolic acid-co-2-acrylamide-2-methyl-1-propane sulfonic acid) (P(AAGA-co-APSA)), and poly(2-acrylamidoglycolic acid-co-4-styrene sodium sulfonate) (P(AAGA-co-ESS)) were synthesized by radical polymerization. These polymers were employed to remove Cr(III) from an aqueous solution. The optimum sorption parameters of amount of resin and sorption time were obtained through batchmode sorption tests. Following batch elution tests to identify the best eluting agent. Finally,the column-mode sorption/elution behaviors of ion exchange resins were studied. The ion exchange resins exhibited excellent removal of Cr(III). The P(AAGA-co-APSA) resin exhibited 89.4% removal, while P(AAGA-co-ESS) displayed 88.3%, P(AAm-co-ESS) 86.8%, and P(APSA-co-AAc) 89.3%. The column-mode was studied by theP(AAGA-co-APSA) resingave a breakthrough capacity of 1.5 mg Cr(III)/mL resin in the first cycle. The elution efficiency was almost 100%. The breakthrough capacity was 1.2 mg Cr(III)/mL resin in the second cycle. The elution efficiency was 90.2% in the second cycle.

Со(ІІ) and Ni(II) Removal from Aqueous Solutions by Polymer and Polymer/Silica Adsorbents with Sulfo and Carboxyl groups

“…These results correlated with the data obtained by. 11 The results of the adsorption study are presented in Table 5. An SEM study of the adsorbents was carried out after their saturation with Co(II) and Ni(II) ions.…”

“…The adsorption of Cu(II), Cd(II), Co(II), Hg(II), Ni(II), Zn(II), Cr(III) and Ag(I) ions by polymers such as poly(2-acrylamido-2-methyl-1-propane-sulfonic acid), poly(methacrylic acid), poly(2-acrylamido-2-methyl-1-propane-sulfonic acid-co-methacrylic acid), and cross-linked copolymer poly(4-styrene sodium sulfonate-co-acrylic acid) was investigated. [7][8] Recent studies by this research team include the synthesis of cation-exchange resins based on water-soluble copolymers: poly(acrylamide-co-styrene sodium sulfonate), poly(2-acrylamido-2-methyl-1-propanesulfonic acid-co-acrylic acid), poly(2-acrylamidoglycolic acid-co-2-acrylamido-2-methyl-1-propanesulfonic ac- [9][10][11] The developed ion-exchange copolymers demonstrated the ability to remove Cr(III) ions from aqueous solutions. Synthetic polymer materials for ion exchange adsorbents consisting of 4-styrene sodium sulfonate, methacrylic acid and methyl methacrylate at different ratios were prepared by polymerization in solution.…”