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Removal of hexavalent chromium ions from the simulated wastewater using electrocoagulation process
Date issued
2018
Author(s)
Kamar, Firas Hashim
Esgair, Karim Khalifa
Abod, Baker M.
Nechifor, Aurelia Cristina
Abstract
The removal of hexavalent chromium (Cr+6) ions from simulated wastewater was
investigated by using batch electrocoagulation. The influence of several variables on
the removal process was studied such as a type of electrodes, initial pH, initial
concentration of Cr+6 ions, electrolysis time, sodium chloride concentration and
current density. The experimental results showed that the removal efficiency of Cr+6
ions was more effective when using iron electrode comparing with the aluminium
electrodes. The maximum removal of Cr+6 ions was 96.58% at pH 6.0, initial ion
concentration 40 mg/L, electrolysis time 15 min, sodium chloride concentration 2
g/L, and the current density 30 mA/cm2.
investigated by using batch electrocoagulation. The influence of several variables on
the removal process was studied such as a type of electrodes, initial pH, initial
concentration of Cr+6 ions, electrolysis time, sodium chloride concentration and
current density. The experimental results showed that the removal efficiency of Cr+6
ions was more effective when using iron electrode comparing with the aluminium
electrodes. The maximum removal of Cr+6 ions was 96.58% at pH 6.0, initial ion
concentration 40 mg/L, electrolysis time 15 min, sodium chloride concentration 2
g/L, and the current density 30 mA/cm2.
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