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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 12, 2015, pp. 3735-3744
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Bioline Code: st15349
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 12, No. 12, 2015, pp. 3735-3744
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Electrosorption for organic pollutants removal and desalination by graphite and activated carbon fiber composite electrodes
Zhou, G; Li, W; Wang, Z; Wang, X; Li, S & Zhang, D
Abstract
This paper investigates a new type of carbonbased
electrodes, which were equipped with graphite and
activated carbon fiber composite, to improve the performance
of electrosorption. The results indicated that the
highest desalination efficiency achieved 55 % and the optimal
condition was 1.6 V voltage, 60 min retention time
and 1.0 cm electrode distance. Freundlich isotherms successfully
fitted with the respective behavior of the composite
electrode and provided theoretical evidence for the
desalination performance improvement. Applied in real
black liquor of refined cotton, the graphite and activated
carbon fiber composite electrodes achieved high removal
efficiency for conductivity (59 %) and CODCr (76 %).
Similar removal performance was also observed in sodium
copper chlorophyll wastewater, and removal efficiency was
37 % for conductivity and 14 % for CODCr. For the first
time, this research demonstrated the biodegradability improvement
in real industrial wastewater via electrosorption
treatment, suggesting a potential pretreatment technique
for high-salinity wastewater.
Keywords
Electrosorption; Graphite and activated carbon fiber composite electrodes; Saline wastewater; Desalination efficiency
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