Abstract
The effect of untreated and Fenton-treated acid dyes (C.I. Acid Red 183 and C.I. Acid Orange 51) and a reactive dye (C.I. Reactive Blue 4) on aerobic, anoxic and anaerobic processes was investigated. The optimum Fe2+:H2O2 molar ratio was selected as 1:5 (4 mM:20 mM) for 10 min Fenton treatment at pH 3, resulting in reduced chemical oxygen demand and dissolved organic carbon removal efficiencies; only acetate was detected as a stable dye oxidation end product. During anaerobic digestion, 100, 29% and no inhibition in methane production was observed for the untreated blue, red and orange dyes, respectively. The inhibitory effect of the blue reactive dye on methane production was ∼21% after Fenton treatment. Neither untreated nor treated dyes exhibited an inhibitory effect on denitrification. Aerobic glucose degradation was inhibited by 23-29% by untreated dyes, whereas Fenton-treated dyes had no inhibitory effect on aerobic glucose degradation.
| Original language | English |
|---|---|
| Pages (from-to) | 117-130 |
| Number of pages | 14 |
| Journal | Dyes and Pigments |
| Volume | 78 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Aug 2008 |
Funding
The present work was financially supported by TUBA (The Turkish Academy of Sciences) under the “Young Scientists Scholarship Program” and conducted in the laboratories of Technical University of Denmark (Fenton, anaerobic, anoxic experiments) and Istanbul Technical University (Fenton, aerobic experiments).
| Funders | Funder number |
|---|---|
| TUBA | |
| Türkiye Bilimler Akademisi | |
| Danmarks Tekniske Universitet | |
| Istanbul Teknik Üniversitesi |
Keywords
- Acid dyes
- Aerobic, anoxic and aerobic treatment processes
- Dyehouse effluent
- Fenton treatment
- Reactive dyes
