Electrochemical removal of sodium ion from fermented food composts

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Title
Electrochemical removal of sodium ion from fermented food composts
Author(s)
Ki Tae Baek; Hyun Ho Lee; Hyun Jae Shin; Ji Won Yang
Bibliographic Citation
Korean Journal of Chemical Engineering, vol. 17, no. 2, pp. 245-247
Publication Year
2000
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/cm2 (the distance between the electrodes is 16 cm), 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/m3. 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.
Keyword
sodium chlorideelectrochemical removalfoodwastescompostsdesalting
ISSN
I000-0127
Publisher
Korea Soc-Assoc-Inst
DOI
http://dx.doi.org/10.1007/BF02707151
Type
Article
Appears in Collections:
1. Journal Articles > Journal Articles
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