Adsorption of Nonylphenol Polyethoxylate Using HCl-Treated Fish Scales of Barbonymus gonionotus in the Presence of Anionic Surfactant

Authors

  • Nisakorn Thongkon Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand.
  • Sureewan Yaodusit Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand.
  • Janjira Thongdee Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand.

Keywords:

nonylphenol polyethoxylate, sodium dodecylbenzene sulfonate, isotherm, kinetics, thermodynamics

Abstract

The adsorption of nonylphenol polyethoxylate (NPnEO; n=3–13, n~9), by HCl-treated fish scales (HTS) was enhanced significantly after the pre-adsorption of sodium dodecylbenzene sulfonate (SDBS) onto the HTS. The amount of SDBS adsorbed increased with the contact time, resulting in a monolayer coverage of the HTS (SBHTS) before NP9EO adsorption. The maximum percentage of NP9EO adsorption onto the SBHTS was 92.3% for 180 min. The adsorption processes were found to follow a pseudo-second-order type. The adsorption isotherm of NP9EO onto the SBHTS could be explained better using the Langmuir model than with the Freundlich model and the former produced a best fit with a correlation coefficient value of 0.999 and a steric hindrance effect of SDBS. The thermodynamic parameters, the enthalpy, the entropy and the Gibbs free energy changes were calculated as well, and their values indicated that the adsorption processes were spontaneous and endothermic. Investigation of the adsorption ability of fish scales may result in a better understanding of the parent compound (NP9EO) accumulation in fish.

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Published

2015-04-30

How to Cite

Thongkon, Nisakorn, Sureewan Yaodusit, and Janjira Thongdee. 2015. “Adsorption of Nonylphenol Polyethoxylate Using HCl-Treated Fish Scales of Barbonymus Gonionotus in the Presence of Anionic Surfactant”. Agriculture and Natural Resources 49 (2). Bangkok, Thailand:219-28. https://li01.tci-thaijo.org/index.php/anres/article/view/243564.

Issue

Vol. 49 No. 2 (2015): March-April

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.