Adsorption of Cu( II) and Pb( II) in Solution of Aminated Hybrid Microspheres
[1]ZHANG Jie,SHANG Cheng-jiang,Chen Wei-hang,et al.Adsorption of Cu( II) and Pb( II) in Solution of Aminated Hybrid Microspheres[J].Journal of Zhengzhou University (Engineering Science),2015,36(05):1-.[doi:10.3969/j.issn.1671-6833.2015.05.001]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
36
Number of periods:
2015 05
Page number:
1-
Column:
Public date:
2015-11-29
- Title:
- Adsorption of Cu( II) and Pb( II) in Solution of Aminated Hybrid Microspheres
- Keywords:
- hybrid microsphere ; heavy metal ion ; adsorption ; regeneration
- CLC:
- O647.3
- Abstract:
- The aminated core-shell organic-inorganic hybrid silica microspheres P( DETA-co-EGDMA)/Si0,were prepared by distilation precipitation polymerization and amide reaction.The diameter of hybrid micro-spheres inorganic core was ca. 400 nm and the thickness of organic polymer shell was ca. 33 nm.The amina-ted hybrid microspheres were characterized by elemental analysis and it was found that N element content ofmicrospheres was 2.91 % .The adsorption behaviors of aminated hybrid microspheres on heavy metal ions Cu(lI) and Pb( II) were investigated,which showed that aminated hybrid microspheres exhibited larger adsorp-tion capacities than methacrylic acid hybrid microspheres P(MAA-co-EGDMA )/SiO2 and unmodified silicamicrospheres.The adsorption isotherm of aminated hybrid microspheres followed the Langmuir model and themaximum adsorption capacities of aminated hybrid microspheres was 45.50 mg/g for Cu(ll) and 70.75 mg/gfor Pb( II) at 298 K,respectively. The adsorption kinetics were consistent with pseudo-second order model.The aminated hybrid microspheres still maintained excellent regeneration ratios through thrice desorption andregeneration experiment.
- References:
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