Removal of cadmium using MnO2 loaded D301 resin.
MnO2 loaded weak basic anion exchange resin D301 (Anion exchange resin, macroreticular weak basic styrene) as adsorbent has been prepared and applied to the removal of cadmium. The adsorption characteristics have been investigated with respect to effect of pH, equilibrium isotherms, removal kinetic data, and interference of the coexisting ions. The results indicated that the Cd2+ could be efficiently removed using MnO2 loaded D301 resin in the pH range of 3-8 from aqueous solutions with the co-existence of high concentration of alkali and alkaline-earth metals ions. T he saturate adsorption capacity of the Cd2+ was 77.88 mg/g. Theadsorption process followed the pseudo first-order kinetics. The equilibrium data obtained in this study accorded excellently with the Langmuir adsorption isotherm.
Zhu
Zhi-liang
ZL
Key Laboratory of Yangtze Aquatic Environment of Ministry of Education, State Key Laboratory of Pollution Control and Resource Reuse, Tongii University, Shanghai 200092, China. zzl@mail.tongji.edu.cn
Ma
Hong-mei
HM
Zhang
Rong-hua
RH
Ge
Yuan-xin
YX
Zhao
Jian-fu
JF
D000327:Adsorption; D000837:Anion Exchange Resins / Q000737:chemistry*; D002104:Cadmium / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D017895:Manganese Compounds / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
D000837:Anion Exchange Resins; D017895:Manganese Compounds; D010087:Oxides; D014874:Water Pollutants, Chemical; D002104:Cadmium; C027424:manganese oxide