| Summary: | The heavy metal removal enhancement from polluted river water was investigated
using two types of electrodes consist of integrated carbon-aluminium and a conventional
aluminium plate electrode at laboratory-scale experiments. In the integrated electrode systems,
the aluminium electrode surface was coated with carbon using mixed slurry containing carbon
black, polyvinyl acetate and methanol. The electrochemical treatment was conducted on the
parameter condition of 90V applied voltage, 3cm of electrode distance and 60 minutes of
electrolysis operational time. Surface of both electrodes was investigated for pre and post
electrolysis treatment by using SEM-EDX analytical technique. Comparison between both of
the electrode configuration exhibits that more metals were accumulated on carbon integrated
electrode surfaces for both anode and cathode, and more heavy metals were detected on the
cathode. The atomic percentage of metals distributed on the cathode conventional electrode
surface consist of Al (94.62%), Zn (1.19%), Mn (0.73%), Fe (2.81%) and Cu (0.64%), while
on the anode contained O (12.08%), Al (87.63%) and Zn (0.29%). Meanwhile, cathode surface
of integrated electrode was accumulated with more metals; O (75.40%), Al (21.06%), Zn
(0.45%), Mn (0.22), Fe (0.29%), Cu (0.84%), Pb (0.47%), Na (0.94%), Cr (0.08%), Ni
(0.02%) and Ag (0.22%), while on anode contain Al (3.48%), Fe (0.49 %), C (95.77%), and
Pb (0.26%). According to this experiment, it was found that integrated carbon-aluminium
electrodes have a great potential to accumulate more heavy metal species from polluted water
compare to the conventional aluminium electrode. Here, heavy metal accumulation process
obviously very significant on the cathode surface.
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