Modeling Competitive Adsorption of Copper II Lead II and Cadmium II by Kaolinite Based Clay Mineral Humic Acid System 28 493 506 2009
Yazarlar (3)
Prof. Dr. Fehime Jülide HIZAL YÜCESOY Istanbul Üniversitesi, Türkiye
Resat Apak
Istanbul Üniversitesi, Türkiye
W. H. Hoell
Karlsruher Institut Für Technologie, Campus Nord, Almanya
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Environmental Progress and Sustainable Energy
Dergi ISSN 1944-7442 Dergi Bilgileri (2009)
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 12-2009
Kabul Tarihi – Yayınlanma Tarihi 10-11-2009
Cilt / Sayı / Sayfa 28 / 4 / 493–506 DOI 10.1002/ep.10331
Makale Linki https://aiche.onlinelibrary.wiley.com/doi/10.1002/ep.10331
UAK Araştırma Alanları
Analitik Kimya
Özet
The aim of this work is to investigate and model the simultaneous adsorption of Cu(II), Cd(II), and Pb(II) in the presence and absence of humic acid on kaolinite-based clays. The preliminary capacity estimation of clays for metal was made with the use of a modified Langmuir approach, and adsorption data collected at various pH were processed using the FITEQL 3.2 computer program to establish the model. The three types of surface sites responsible for adsorption were considered to be the permanent charge sites X2 2-, and variable charge sites comprised of ≡S1OH silanol groups and ≡S2OH aluminol groups of kaolinite-based clays. Heavy metal cations were assumed to bind to the surface in the form of outer sphere and inner sphere monodentate complexes. When humic acid was added, divalent metal ion adsorption was modeled using a multisite binding model by the aid of FITEQL 3.2. Since the stability of the ternary surface complexes in the presence of humic acid washigher than that of the corresponding binary heavy metal cation complexes, the adsorption versus pH curves were steeper (and distinctly S-shaped) compared with the tailed curves observed in binary claymetal ion systems, probably due to the fact that humic acid-coated kaolinite essentially constituted the active surface for metal sorption. Although competitive metal adsorption from (metal ions mixture1humate) solutions was generally lower than those from individual metal ion solutions, Cd2+, being the metal ion with the highest affinity toward permanent charge sites, was the least affected ion at relatively low pH from competitive adsorption. © 2009 American Institute of Chemical Engineers Environ Prog.
Anahtar Kelimeler
Adsorption modeling | Clay | Competitive adsorption | Fiteql | Heavy metals
BM Sürdürülebilir Kalkınma Amaçları
Atıf Sayıları
Web of Science 22
Scopus 26
Modeling Competitive Adsorption of Copper II Lead II and Cadmium II by Kaolinite Based Clay Mineral Humic Acid System 28 493 506 2009
İletişim
  • Yalova Üniversitesi Rektörlüğü, Bahçelievler Mah. Çınarcık Yolu Caddesi No: 26 Merkez - YALOVA, 77200
  • unis@yalova.edu.tr 0226 815 50 00
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