Adsorption of CO2+ by stylene-g-polyethylene membrane bearing sulfonic acid groups modified by radiation-induced graft copolymerization

Abstract

Cation-exchange hollow fiber membrane was prepared by radiation-induced grafting polymerization of styrene onto polyethylene hollow fiber membrane and its sulfonation. Adsorption characteristics for the cation-exchange membranes are examined when the solution of Co 2ϩ permeates across the cation-exchange fiber membrane. The maximum grafting peak was obtained from 70% styrene concentration at 50°C. The degree of grafting (%) was enhanced with additives such as H 2 SO 4 and divinylbenzene. The content of OSO 3 H groups ranged from 2 to 5 mmol g Ϫ1 with chlorosulfonic acid (ClSO 3 H) in dichloroethane, from 0.5 to 6 mmol g Ϫ1 with ClSO 3 H in H 2 SO 4 , respectively. The adsorption of Co 2ϩ by the cation-exchange membranes increased with increasing OSO 3 H content.

Heavy metals uptake from aqueous solutions and industrial wastewaters by humic acid-immobilized polymer/bentonite composite: Kinetics and equilibrium modeling

“…It is found that the adsorption capacity of HA-Am-PAA-B towards Cu(II), Zn(II) and Co(II) (106.21, 96.15 and 52.93 mg g −1 for Cu(II), Zn(II) and Co(II), [32], modified coir fiber [33], natural zeolite [34], modified jute fiber [35], biomass [36], sunflower stalks [37] and multiwalled carbon nanotube [38], respectively. The values of Q 0 for the adsorption of Co(II) ions onto kaolinite [39], sepiolite [40], magnesium silicate composite [41], styrene-g-polyethylene membrane [42], methacrylic acid/acrylamide monomer mixture grafted fiber [28], and aluminium pillared clay [43] were found to be 1.74, 7.57, 9.4, 25.0, 27.17 and 38.61 mg g −1 , respectively. The results are of greater environmental concern as HA-Am-PAA-B can be effectively applied to remove Cu(II), Zn(II) and Co(II) ions from industrial wastewater.…”

Development of Membranes by Radiation‐Induced Graft Polymerization of Monomers onto Polyethylene Films

“…However, the degree of grafting decreased beyond 1 mol/L sulfuric acid concentration. [49] Choi and Nho [50] have observed that the addition of sulfuric acid to the reaction medium Figure 3. Variation of the degree of grafting of acrylic acid with the ferrous sulfate concentration in PE films.…”

Radiolytic immobilization of lipase on poly(glycidyl methacrylate)-grafted polyethylene microbeads

“…18 In a previous work, 12 the GMA were grafted onto polyethylene (PE) film, polyethylene hollow fiber membrane, 3,19 polypropylene nonwoven fabric, 13 and other forms, 20 by preirradiation grafting technique for removal of heavy metal ions. However, the grafting of the GMA on the PE microbead by radiation-induced graft polymerization technique was not reported, to our knowledge.…”

“…There have been several reports about RIGP of polar monomers onto polymer film to obtain hydrophilic property for versatile applications. [7][8][9] For example, an ion-exchange membrane can be used in water desalination, 10 as a carrier for immobilization of medical products, 11 as a separator in alkaline batteries, 12,13 and in other application. 14,15 Enzymes are widely used as biocatalysts in chemical, pharmaceutical and food industrials, and as specific ligands in clinical analysis.…”