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Citation: MENG Guan-Hu, LIU Bao-He, ZHENG Jun, LI Ai-Min. Adsorption Properties of Salicylic Acid Modified Polystyrene Toward Lead(Ⅱ) and Copper(Ⅱ) Ions[J]. Chinese Journal of Applied Chemistry, ;2009, 26(2): 219-223. shu

Adsorption Properties of Salicylic Acid Modified Polystyrene Toward Lead(Ⅱ) and Copper(Ⅱ) Ions

MENG Guan-Hu ^a,b,, ,
LIU Bao-He ^a ,
ZHENG Jun ^a ,
LI Ai-Min ^b

1.
a School of Construction Engineering, Anhui University of Technology, Ma'anshan 243002;
2.
b School of the Environment, Nanjing University, Nanjing 210093

Corresponding author: MENG Guan-Hu,
Received Date: 30 December 2007
Available Online: 20 March 2008
Fund Project: 安徽省教育厅资助项目(KJ2007B167) (KJ2007B167)

The salicylic acid modified polystyrene was prepared to study adsorption properties toward Pb²⁺ and Cu²⁺ from aqueous solution.In the range of concentration in our study,Qe values of the chemical modified resin NDA-O and non-modified resin NDA-150 were 0.130 mmol/g and 1.749×10^-2 mmol/g respectively toward Pb²⁺,and 0.110 mmol/g and 9.02×10^-3 mmol/g respectively toward Cu²⁺.The adsorption data of both metal ions fit Langmuir equation very well and the adsorption processes were favorable ones.When the metal ions' concentrations at equilibrium were lower than 0.271 mmol/L,the prevailing adsorption mechanism was ion exchange.And when the metal ions' concentrations was higher than 0.378 mmol/L,surface complexation could be considered as well.In our study,the dynamic adsorption capacities of NDA-O toward metal ions were three times as many as those of NDA-150.The resin with metal ions adsorbed could be completely regenerated by washing with 5% hydrochloric acid.
- salicylic acid,
- polystyrene,
- adsorption,
- Pb²⁺,
- Cu²⁺
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