Journal article

Publication year: 2013

Pages: 578-585

Journal: Industrial & Engineering Chemistry Research

Volume number: 52

Issue number: 2

ISSN: 0888-5885

DOI Link: https://doi.org/10.1021/ie3024577

Publisher: American Chemical Society

Abstract: 
A new sulfonated aniline-modified poly(vinyl alcohol)/K-feldspar (SAPK) composite was prepared. The cation-exchange capacity of the composite was found to be S times that of neat feldspar. The specific surface area and point of zero charge also changed significantly upon modification, from 15.6 +/- 0.1 m(2)/g and 2.20 (K-feldspar) to 73.6 +/- 0.3 m(2)/g and 1.91 (SAPK). Zn2+, Cd2+, and Pb2+ adsorption was found to be largely independent of pH, and the metal adsorption rate on SAPK was higher than that on neat feldspar. This particularly applies to the initial adsorption rates. The adsorption process involves both film and pore diffusion; film diffusion initially controls the adsorption. The Freundlich and Langmuir models were found to fit metal-ion adsorption on SAPK most accurately. Adsorption on neat feldspar was best fitted with a Langmuir model, indicating the formation of adsorbate monolayers. Both pure feldspar and SAPK showed better selectivity for Pb2+ than for Cd2+ or Zn2+.

Harvard Citation style: Unuabonah, E., Olu-Owolabi, B., Taubert, A., Omolehin, E. and Adebowale, K. (2013) SAPK: A Novel Composite Resin for Water Treatment with Very High Zn²⁺, Cd²⁺, and Pb²⁺ Adsorption Capacity, Industrial & Engineering Chemistry Research, 52(2), pp. 578-585. https://doi.org/10.1021/ie3024577

APA Citation style: Unuabonah, E., Olu-Owolabi, B., Taubert, A., Omolehin, E., & Adebowale, K. (2013). SAPK: A Novel Composite Resin for Water Treatment with Very High Zn²⁺, Cd²⁺, and Pb²⁺ Adsorption Capacity. Industrial & Engineering Chemistry Research. 52(2), 578-585. https://doi.org/10.1021/ie3024577