The inhibitory effects and removal of dieldrin continuous upflow anaerobic sludge blanket reactors

Date

2003-09-01

Author

Bayramoğlu, Tuba Hande
DEMİRER, GÖKSEL NİYAZİ

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The inhibitory effects and removal efficiency of dieldrin (DLD) in anaerobic reactors were investigated. Anaerobic toxicity assay (ATA) experiments conducted in batch reactors revealed that 30 mg/l DLD had inhibitory effects on the unacclimated mixed anaerobic cultures. Continuous reactor experiments performed in a lab-scale two-stage upflow anaerobic sludge blanket (UASB) reactor system which was fed with ethanol as the sole carbon source, indicated that anaerobic granular cultures could be successfully acclimated to DLD. Chemical oxygen demand (COD) removal efficiencies were 88–92% for the two-stage system. The influent DLD concentration of 10 mg/l was removed by 44–86% and 86–94% in the second stage and overall UASB system, respectively. Biosorption of DLD on granular anaerobic biomass was found to be a significant mechanism for DLD removal in the UASB system. The maximum DLD loading rate and minimum HRT achievable for the first stage UASB reactor were 0.5 mg/l day (76 μg DLD/g VSS.day) and 10 h, respectively, which resulted in the overall COD removal efficiency of 85%.

Subject Keywords

Renewable Energy, Sustainability and the Environment, Environmental Engineering, Waste Management and Disposal, Bioengineering, General Medicine

URI

https://hdl.handle.net/11511/35981

Journal

Bioresource Technology

DOI

https://doi.org/10.1016/s0960-8524(03)00046-4

Collections

Department of Environmental Engineering, Article

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Citation Formats

T. H. Bayramoğlu and G. N. DEMİRER, “The inhibitory effects and removal of dieldrin continuous upflow anaerobic sludge blanket reactors,” Bioresource Technology, pp. 191–197, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35981.