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Removal Of Fe(â…¢) And Chloric Organic Contaminant Inwater With Molecular Imprinting Technology

Posted on:2008-06-14Degree:MasterType:Thesis
Country:ChinaCandidate:J BianFull Text:PDF
GTID:2121360245497653Subject:Chemical processes
Abstract/Summary:
The pollution of heavy metal ions Fe(Ш) and chloric organic compound in drinkingr water are the main problems in feedwater treatment, Fe(Ш)-imprinting polymer (Fe(Ш)-MIPs) and dichlorphenol-imprinting polymer (dichlorphenol-MIPs) were synthesized by the emulsion polymerization approach and inverse micro-emulsion polymerization approach respectively aimed to remove Fe(Ш) and dichlorphenol in water. The corresponding molecular imprinting polymers (MIPs) represent fine adsorptive performance.Fe(Ш)-imprinting polymer (Fe(Ш)-MIPs) were synthesized using oleic acid as functional monomer and divinylbenzene as cross-linker by the emulsion polymerization approach and inverse micro-emulsion polymerization approach respectively at first. The adsorptive capacity of Fe(Ш)-MIPs were tested in water and the performance of Fe(Ш)-MIPs influenced by pH and Temperature of water were determined. Scanning electron microscope, atom force microscope and Autosorb instrument were used to examine the surface feature and interior structure of the imprinting polymer. The result showed that the Fe(Ш)-MIPs micro-ball prepared by inverse micro-emulsion polymerization approach possessed batter adsorptive nature, favorable selectivity, fine repetitive use in water. The high velocity and max capaticy reached 34.70 mg/g and 1.01mg/min respectively.Then dichlorphenol-imprinting polymer were synthesized using Fe(Ш) as coordinate ion, oleic acid as functional monomer and divinylbenzene as cross-linker by the emulsion polymerization approach and inverse micro-emulsion polymerization approach respectively. The dichlorphenol-imprinting polymer microball prepared by inverse micro-emulsion polymerization approach possessed batter adsorptive nature, favorable selectivity, fine repetitive use in water. The high velocity and max capaticy reached 73.20mg/g and 1.19mg/min respectively. Also the performance of dichlorphenol-MIPs influenced by pH and Temperature of water were determined. Scanning electron microscope, atom force microscope and Autosorb instrument were likewise used to examine the surface feature and interior structure of the imprinting polymer.
Keywords/Search Tags:Water treatment, Molecular imprinting technique, Fe(Ш), Dichlorphenol
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