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The electroflotation process utilizing four different kinds of
anodes, including sacrificed iron, and aluminum, inert
graphite and lead dioxide-coated titanium (PbO2/Ti),was used to
treat fish market wastes. The objective of this study aims to
determine the effect of operating parameters, including initial
pH , electrode gap , current density , and specific applied
electricity , on the efficiency of electroflotation and its
specific energy consumption. The experimental resultsfrom
batch reactors of electro- flotation reveals that: (1) The
electroflotation utilizing the sacrificed anode of aluminum
has a better efficiency than that utilizing the sacrificed
anode of iron.When the current density of 1.0 amp/dm2 and the
specific applied electricity of 19.2amp. min/l were
controlled in electroflotation utilizing the sacrificed
anode of aluminum, the removal efficiencies of CODt and SS
were 82.3 and 81.4%,respectively.(2)The electroflotation
utilizing the inert anode of PbO2 /Ti had a better efficiency
for the removal of pollutants.When the current density of 1.5
amp/dm2 and specific applied electricity of 115.4 amp.min/l
were controlled, the removal efficiencies of CODt, SS, and
NH3-N were 90.3, 87.2, and 100%,respectively. In the
continuous-flow reactor of electroflotation utilizing
the sacrificed anode of aluminum, when the current density of
2.0 amp/dm2 and specific applied electricity of 44.2 amp.min/l
were controlled, the removal efficiencies of CODt and SS were
79.5 % and 76.4%, respectively. In the continuous-flow reactor
of electroflotation utilizing the inert anode of PbO2 /Ti,
when the current density of 2.0 amp/dm2 and specific
applied electricity of 118.5 amp.min/l were controlled, the
removal efficiencies of CODt, SS and NH3-N were 87.1 %, 85.9 %
and 100 %,respectively.
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