REMOVAL OF Cu2+ AND Pb2+ IONS BY N-VINYL 2-PYRROLIDONE/ITACONIC ACID HYDROGELS FROM AQUEOUS SOLUTIONS
CANADIAN JOURNAL OF CHEMICAL ENGINEERING, cilt.92, sa.1, ss.52-59, 2014 (SCI-Expanded, Scopus)
- 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.