Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
-
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.
Copyright © KIChE. All rights reserved.
All issues
Electrochemical Removal of Sodium Ion from Fermented Food Composts
Department of Chemical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Taejon 305-701, Korea 1Bioprocess Technology Research Division, Korea Research Institute of Bioscience and Biotechnology (KRIBB), P.O. Box 115, Yusong, Taejon, Korea
Korean Journal of Chemical Engineering, March 2000, 17(2), 245-247(3), 10.1007/BF02707151
Download PDF
Abstract
Fermented food composts, to be recycled into fertilizer and animal feed, require sodium chloride concentrations to be less than 1 wt% due to several toxicities. Electrochemical methods are used to remove sodium ions from fermented food composts. By washing the compost with tap water (with no electric current applied), 48% of the initial sodium ion is removed. With an electric current density of 3 mA/㎠ (the distance between the electrodes is 16cm), the removal efficiency increases to 96% for a 36 h operation. Major factors influencing the efficiency are the treatment time and the electric current density. Removal efficiency increases with energy demand to yield 96% removal at 60 Kwh/㎥. Due to the difference in relative ionic mobility, less than 9% of calcium is removed, during the same operation time, which supports the feasibility of this method.
References
Acar YB, J. Geotech. Geoenviron. Eng., 122, 173 (1996)
Eaton AD, "Standard Methods for the Examination of Water and Wastewater," 19(th) ed., p. 3-3~3-15, American Pubican Publiccation Health Association, Maryland, USA (1995)
Hansen HK, J. Chem. Technol. Biotechnol., 70, 67 (1997)
Hicks RE, Environ. Sci. Technol., 28, 2203 (1994)
Kim NC, J. Korea Org. Waste Recycling Council, 2, 51 (1994)
Lechno S, J. Plant Physiol., 150, 206 (1997)
Martinez V, Planta, 190, 519 (1993)
Pamukcu S, Environ. Prog., 11, 241 (1992)
Trueman KF, Aust. Vet. J., 54, 89 (1978)
Eaton AD, "Standard Methods for the Examination of Water and Wastewater," 19(th) ed., p. 3-3~3-15, American Pubican Publiccation Health Association, Maryland, USA (1995)
Hansen HK, J. Chem. Technol. Biotechnol., 70, 67 (1997)
Hicks RE, Environ. Sci. Technol., 28, 2203 (1994)
Kim NC, J. Korea Org. Waste Recycling Council, 2, 51 (1994)
Lechno S, J. Plant Physiol., 150, 206 (1997)
Martinez V, Planta, 190, 519 (1993)
Pamukcu S, Environ. Prog., 11, 241 (1992)
Trueman KF, Aust. Vet. J., 54, 89 (1978)
