Algal Treatment of Textile Dyehouse Wastewater
In this study, treatment of mono-azo dye, Tectilon Yellow 2G (TY2G), and di-azo dye, Erionyl Navy R (ENR), using an algal species, Chlorella vulgaris, was investigated. In an attempt to conduct a treatability study for TY2G by C. vulgaris, different concentrations of TY2G were added to the reactors containing initially about 500 mg/m3 algae in terms of Chl-a content. The COD removal efficiencies were determined as 69.1, 65.8 and 63% for the initial TY2G concentrations of 50, 200 and 400 mg/L, respectively. Acclimation of C. vulgaris to TY2G caused these removal efficiencies to increase to 88, 86 and 80% for ascending dye concentration. The main mechanism of the removal was determined to be degradation and an end product, aniline, formation was observed as confirmed by HPLC analysis. Initial algae concentration was found to be important both in terms of COD removal achievement and contact time requirement. In an attempt to test toxicity of the treated dye effluent, as compared to dye itself, toxicity experiments using activated sludge biomass were performed. By comparing the specific growth rates (μ) values of activated sludge biomass obtained in these two sets, it could be said that toxicity of end product formed after algal treatment of TY2G were less than that of the dye itself. Removal in COD and A220nm occurs during the exponential growth phase of C. vulgaris indicating a growth-associated treatment and hence, mixotrophic growth of C. vulgaris.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: 2002-01-01
More about this publication?
- Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.
WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- Learn about the many other WEF member benefits and join today
- Ingenta Connect is not responsible for the content or availability of external websites