Bu öğeden alıntı yapmak, öğeye bağlanmak için bu tanımlayıcıyı kullanınız: http://hdl.handle.net/11452/22838
Başlık: Porous dye affinity beads for nickel adsorption from aqueous solutions: A kinetic study
Yazarlar: Akgöl, Sinan
Kuşvuran, Erdal
Şenel, Serap
Denizli, Adil
Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Bölümü.
Kara, Ali
AAG-6271-2019
7102824859
Anahtar kelimeler: Polymer science
Dyes/pigments
Chromatography
Adsorption
Solutions
Porous materials
Pigments
Nickel
Kinetic theory
Chromatographic analysis
Adsorption
Temperature
Reactive dye
Polymer
Modification
Kinetics
Dye
Diffusion
Desorption
Copolymerization
Bead
Porous dye affinity beads
Nickel adsorption
Adsorbent systems
Dyes
Chitosan
Mechanisms
Equilibrium
Acid
Microbeads
Carcinogenesis
Removal
Lead ions
Copper adsorption
Heavy-metal ions
Yayın Tarihi: 15-Haz-2006
Yayıncı: Wiley
Atıf: Akgöl, S. vd. (2006). ''Porous dye affinity beads for nickel adsorption from aqueous solutions: A kinetic study''. Journal of Applied Polymer Science, 100(6), 5056-5065.
Özet: We investigated a new adsorbent system, Reactive Red 120 attached poly(2-hydroxyethyl methacrylate ethylene dimethacrylate) [poly(HEMA-EDMA)] beads, for the removal of Ni2+ ions from aqueous solutions. Poly(HEMA-EDMA) beads were prepared by the modified suspension copolymerization of 2-hydroxyethyl methacrylate and ethylene dimethacrylate. Reactive Red 120 molecules were covalently attached to the beads. The beads (150-250 mu m), having a swelling ratio of 55% and carrying 25.5 mu mol of Reactive Red 1.20/g of polymer, were used in the removal of Ni2+ ions. The adsorption rate and capacity of the Reactive Red 120 attached poly(HEMA-EDMA) beads for Ni2+ ions was investigated in aqueous media containing different amounts of Ni2+ ions (5-35 mg/L) and having different pH values (2.0-7.0). Very high adsorption rates were observed at the beginning, and adsorption equilibria were then gradually achieved in about 60 min. The maximum adsorption of Ni2+ ions onto the Reactive Red 120 attached poly(HEMA-EDMA) beads was 2.83 mg/g at pH 6.0. The nonspecific adsorption of Ni2+ ions onto poly(HEMA-EDMA) beads was negligible (0.1 mg/g). The desorption of Ni2+ ions was studied with 0.1M HNO3. High desorption ratios (> 90%) were achieved. The intraparticle diffusion rate constants at various temperatures were calculated as k(20 degrees C) = 0.565 mg/g min(0.5), k(30 degrees C) = 0.560 mg/g min(0.5), and k(40 degrees C) = 0.385 mg/g min(0.5). Adsorption-desorption cycles showed the feasibility of repeated use of this novel adsorbent system. The equilibrium data fitted very well both Langmuir and Freundlich adsorption models. The pseudo-first-order kinetic model was used to describe the kinetic data.
URI: https://doi.org/10.1002/app.23856
https://onlinelibrary.wiley.com/doi/10.1002/app.23856
http://hdl.handle.net/11452/22838
ISSN: 0021-8995
1097-4628
Koleksiyonlarda Görünür:Web of Science

Bu öğenin dosyaları:
Bu öğeyle ilişkili dosya bulunmamaktadır.


DSpace'deki bütün öğeler, aksi belirtilmedikçe, tüm hakları saklı tutulmak şartıyla telif hakkı ile korunmaktadır.