title: Improving the biodegradability of grain distillery wastewater for use as UASB substrate by combinations of ozonation/enzymatic pre-treatments.
abstract: The effect of ozonation and enzyme combination pre-treatments on the composition of grain distillery wastewater (GDWW) was investigated. Exposure of UASB granules to these pre-treated GDWW was evaluated by determining the effect on granule activity, visual appearance and lipid content of the granules. Pre-treatments involving a pre-ozonation step were found to be more effective in reducing the lipid and COD content of GDWW. The higher the lipid and COD reduction achieved by the pre-treatments the higher the granule activity after 24 d exposure, the lower the lipid content in the granule and the less severe the formation of an encapsulating layer.
authors: Department of Food Science, Stellenbosch University, Private Bag X1, Matieland, 7602, South Africa. gos@sun.ac.za
authors: G O
authors: GO
authors: Sigge
authors: L-M
authors: LM
authors: Gie
authors: T J
authors: TJ
authors: Britz
mesh_terms: D000434:Alcoholic Beverages; D001673:Biodegradation, Environmental; D019149:Bioreactors; D002523:Edible Grain; D004798:Enzymes / Q000494:pharmacology; D008055:Lipids; D016877:Oxidants / Q000494:pharmacology*; D010126:Ozone / Q000494:pharmacology*; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D004798:Enzymes; D008055:Lipids; D016877:Oxidants; D010126:Ozone