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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 5, 2002
Accepted July 26, 2002

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Characterization Procedure for Adsorption of DOC (Dissolved Organic Carbon) from Synthetic Wastewater

Seoung-Hyun Kim Huu-Hao Ngo¹ Durgananda Chaudhary¹ Jo-Chun Kim² Saravanamuthu Vigneswaran¹ Hee Moon^†

Faculty of Applied Chemistry, Chonnam National University, Gwangju 500-757, Korea ¹Environmental Engineering Group, University of Technology, Sydney, PO Box 123, Broadway, NSW 2007, Australia ²Department of Environmental Engineering, Dongshin University, Naju 520-714, Australia

hmoon@chonnam.chonnam.ac.kr

Korean Journal of Chemical Engineering, September 2002, 19(5), 888-894(7)
https://doi.org/10.1007/BF02706985

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Abstract

A characterization method to evaluate the composition of background organic matters in terms of_x000D_ adsorbability was presented and applied to synthetic and domestic wastewater. The binomial distribution of DOC (Dissolved Organic Carbon) fraction in relation of a characterizing variable, the Freundlich coefficient, k, was proposed to describe the initial composition of wastewater by a finite number of pseudospecies. This method was tested for removal of DOC by using granular and powdered activated carbons. These experiments enable us to get information on the distribution function of species in the solution. From the results obtained in this work, kinetic experimental data were predicted on the assumption that the diffusion coefficients were unchanged during the experiments. It was confirmed to be effective in determining the initial composition and describing the equilibria of the DOC. From the experiments, it was found that this synthetic solution has a sigmoid type isotherm on activated carbons. This implies that there are two different adsorption regions in a system, favourable and unfavourable cases, depending on the solution concentration. This unfamiliar problem can be solved by using a characterization method based on IASTFreundlich model.

Keywords

DOC (Dissolved Organic Carbon) Adsorption Synthetic Wastewater GAC (Granular Activated Carbon) PAC (Powdered Activated Carbon) Characterization

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