Abstract
This paper studied the efficiency of another series of advanced oxidation processes involving the use of a chelating ligand, combined with a transition metal forming the transition metal complexes to produce reactive radicals. Previous reports using this H2O2/pyridine/Cu(II) system focused only on the decolorization of a single synthetic dye wastewater. In practice, real dye wastes contain mixture of dyes. Therefore, in this study, we combined two classes of most widely used dyes namely the reactive dye (RD) and disperse dye (DD) in three different ratios of (RD: DD) = (0.25:0.75), (0.50:0.50), and (0.75:0.25) to obtain a better idea of the trend in the treatment efficiency of this system. Experimental results are assessed in terms of percentage chemical oxygen demand (COD) reduction, decolourisation, and the amount of sludge produced. Optimal concentrations were obtained using statistical design of experiment. At optimal concentrations, for (RD:DD) = (0.25:0.75), (0.50:0.50), and (0.75:0.25), the percentage of COD reduction was recorded at 87%, 86% and 81%, respectively, decolourization at 97%, 98% and 96%, respectively while sludge produced was 185 mg/L, 125 mg/L, and 210 mg/L, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 45-54 |
| Number of pages | 10 |
| Journal | Nature Environment and Pollution Technology |
| Volume | 16 |
| Issue number | 1 |
| Publication status | Published - 2017 |
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Keywords
- Advanced oxidation
- Chelating ligand
- Mixed dye wastewater
- Transition metal complex
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Environmental Science(all)
Cite this
Reactive-disperse mixed dye wastewater treatment using advanced oxidation process. / Lim, Joanne C.L.; Lee, Khai Ern.
In: Nature Environment and Pollution Technology, Vol. 16, No. 1, 2017, p. 45-54.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Reactive-disperse mixed dye wastewater treatment using advanced oxidation process
AU - Lim, Joanne C.L.
AU - Lee, Khai Ern
PY - 2017
Y1 - 2017
N2 - This paper studied the efficiency of another series of advanced oxidation processes involving the use of a chelating ligand, combined with a transition metal forming the transition metal complexes to produce reactive radicals. Previous reports using this H2O2/pyridine/Cu(II) system focused only on the decolorization of a single synthetic dye wastewater. In practice, real dye wastes contain mixture of dyes. Therefore, in this study, we combined two classes of most widely used dyes namely the reactive dye (RD) and disperse dye (DD) in three different ratios of (RD: DD) = (0.25:0.75), (0.50:0.50), and (0.75:0.25) to obtain a better idea of the trend in the treatment efficiency of this system. Experimental results are assessed in terms of percentage chemical oxygen demand (COD) reduction, decolourisation, and the amount of sludge produced. Optimal concentrations were obtained using statistical design of experiment. At optimal concentrations, for (RD:DD) = (0.25:0.75), (0.50:0.50), and (0.75:0.25), the percentage of COD reduction was recorded at 87%, 86% and 81%, respectively, decolourization at 97%, 98% and 96%, respectively while sludge produced was 185 mg/L, 125 mg/L, and 210 mg/L, respectively.
AB - This paper studied the efficiency of another series of advanced oxidation processes involving the use of a chelating ligand, combined with a transition metal forming the transition metal complexes to produce reactive radicals. Previous reports using this H2O2/pyridine/Cu(II) system focused only on the decolorization of a single synthetic dye wastewater. In practice, real dye wastes contain mixture of dyes. Therefore, in this study, we combined two classes of most widely used dyes namely the reactive dye (RD) and disperse dye (DD) in three different ratios of (RD: DD) = (0.25:0.75), (0.50:0.50), and (0.75:0.25) to obtain a better idea of the trend in the treatment efficiency of this system. Experimental results are assessed in terms of percentage chemical oxygen demand (COD) reduction, decolourisation, and the amount of sludge produced. Optimal concentrations were obtained using statistical design of experiment. At optimal concentrations, for (RD:DD) = (0.25:0.75), (0.50:0.50), and (0.75:0.25), the percentage of COD reduction was recorded at 87%, 86% and 81%, respectively, decolourization at 97%, 98% and 96%, respectively while sludge produced was 185 mg/L, 125 mg/L, and 210 mg/L, respectively.
KW - Advanced oxidation
KW - Chelating ligand
KW - Mixed dye wastewater
KW - Transition metal complex
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M3 - Article
AN - SCOPUS:85015299764
VL - 16
SP - 45
EP - 54
JO - Nature Environment and Pollution Technology
JF - Nature Environment and Pollution Technology
SN - 0972-6268
IS - 1
ER -