Enhancement of bio-gas production and xenobiotics degradation during anaerobic sludge digestion by ozone treated feed sludge

Date

2013-08-15

Author

Ak, M. S.
Muz, M.
KOMESLİ, Okan Tarık
Gökçay, Celal Ferdi

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Elimination of large amounts of sludge produced during biological treatment is a pressing environmental issue both in this country and elsewhere. For example EU Landfill Directive 99/31/EC [41] prohibits landfilling of both liquid and untreated wastes with a target to reduce the current amount of bio-degradable wastes, including sewage sludge, 50% and 65% by the years 2013 and 2020, respectively. Anaerobic digestion has now proven to be the most energy efficient way of destroying and stabilizing waste activated sludge and the methane by-product is a form of fuel. It is demonstrated in this research that anaerobic digestion of waste activated sludge, when coupled with mild ozone treatment (e.g., 1.33 mg O-3/g-VSS), practically doubles the volume of biogas produced as compared to conventional digesters, while producing no waste sludge for disposal. Ozone treatment of the feed sludge also affects enhanced removal of endocrine disrupting compounds, EDCs, sorbed onto the sludge.

Subject Keywords

Industrial and Manufacturing Engineering, General Chemistry, General Chemical Engineering, Environmental Chemistry

URI

https://hdl.handle.net/11511/57444

Journal

CHEMICAL ENGINEERING JOURNAL

DOI

https://doi.org/10.1016/j.cej.2013.06.113

Collections

Department of Environmental Engineering, Article

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Citation Formats

M. S. Ak, M. Muz, O. T. KOMESLİ, and C. F. Gökçay, “Enhancement of bio-gas production and xenobiotics degradation during anaerobic sludge digestion by ozone treated feed sludge,” CHEMICAL ENGINEERING JOURNAL, pp. 499–505, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57444.