REMOVAL OF Cu2+ AND Pb2+ IONS BY N-VINYL 2-PYRROLIDONE/ITACONIC ACID HYDROGELS FROM AQUEOUS SOLUTIONS

Evren M., Acar I., Guclu K., Guclu G.

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, cilt.92, sa.1, ss.52-59, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 92 Sayı: 1
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1002/cjce.21814
  • Dergi Adı: CANADIAN JOURNAL OF CHEMICAL ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.52-59
  • İstanbul Üniversitesi Adresli: Evet

Özet

In this study, a series of crosslinked N-vinyl-2-pyrrolidone-itaconic acid (NVP-IA) hydrogels was prepared by free radical polymerisation in aqueous solution. Swelling, mechanical and adsorption properties for the removal of Cu2+ and Pb2+ ions from aqueous solutions of these hydrogels were investigated. Metal ion adsorption capacities of hydrogels for Cu2+ and Pb2+ ions were determined as 2.1 and 0.6mmolg (-1), respectively. Adsorption processes of metal ions onto the NVP-IA hydrogels follow pseudo-second-order type adsorption kinetics. The equilibrium adsorption data have been evaluated using Freundlich and Langmuir isotherm models. The results illustrated that the adsorption follows Freundlich isotherm.