Investigation on the Removal of COD from Colored Aqueous Solutions with O-3, H2O2, HCO3-, and PAC

Investigation on the Removal of COD from Colored Aqueous Solutions with O-3, H2O2, HCO3-, and PAC. Oguz, E., Keskinler, B., & Celik, C. OZONE-SCIENCE & ENGINEERING, 37(1):62-70, 2015.
abstract bibtex

In this study, chemical oxygen demand (COD) was removed using different processes containing O-3, H2O2, HCO3-, and powder activated carbon (PAC) from the synthetic dye solutions. The effects of the experimental parameters such as temperature, ozone dose, dye concentration, pH, and time on the removal of COD were investigated. The Taguchi method was applied to determine the optimum conditions. An orthogonal array L-18 (2(1) * 3(7)) experimental design plan was selected to define the optimum conditions. In addition, the mechanism of the COD removal was explained on the basis of the results of Fourier transform infrared (FTIR) spectroscopy. To gain information about COD removal mechanism at various pHs, electrophoretic mobilities of particles were measured. The chosen experimental parameters and their ranges are: [GRAPHICS] (0-39 mM); temperature (18-70 degrees C); ozone dose (164-492 mg/min); dye concentration (200-600 ppm); PAC (0-1.5 g); H2O2 (0-0.056 mM); pH (3-12); and time (10-30 min). Under these optimum conditions, it was found that the COD removal efficiency from the synthetic dye solutions was 98%.

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 title = {Investigation on the Removal of COD from Colored Aqueous Solutions with O-3, H2O2, HCO3-, and PAC},
 type = {article},
 year = {2015},
 identifiers = {[object Object]},
 pages = {62-70},
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 starred = {false},
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 confirmed = {true},
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 citation_key = {ISI:000348727800001},
 source_type = {article},
 abstract = {In this study, chemical oxygen demand (COD) was removed using different
processes containing O-3, H2O2, HCO3-, and powder activated carbon (PAC)
from the synthetic dye solutions. The effects of the experimental
parameters such as temperature, ozone dose, dye concentration, pH, and
time on the removal of COD were investigated. The Taguchi method was
applied to determine the optimum conditions. An orthogonal array L-18
(2(1) * 3(7)) experimental design plan was selected to define the
optimum conditions. In addition, the mechanism of the COD removal was
explained on the basis of the results of Fourier transform infrared
(FTIR) spectroscopy. To gain information about COD removal mechanism at
various pHs, electrophoretic mobilities of particles were measured. The
chosen experimental parameters and their ranges are:
[GRAPHICS]
(0-39 mM); temperature (18-70 degrees C); ozone dose (164-492 mg/min);
dye concentration (200-600 ppm); PAC (0-1.5 g); H2O2 (0-0.056 mM); pH
(3-12); and time (10-30 min). Under these optimum conditions, it was
found that the COD removal efficiency from the synthetic dye solutions
was 98%.},
 bibtype = {article},
 author = {Oguz, Ensar and Keskinler, Bulent and Celik, Cafer},
 journal = {OZONE-SCIENCE & ENGINEERING},
 number = {1}
}

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