Bioremediation of four food industrial effluents

Some effluents ((Whey Effluent (WhE); Orange Effluent (OE); Carrot Effluent (CE) and Chocolate Effluent (ChE)) were bioremediated using some allochthonous microorganisms (Lactobacillus delbrueckii subsp. bulgaricus, Saccharomyces cerevisiae Y-1347 and Dekkera bruxellensis). The highest biodegradable efficiency of the Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD) and Total Organic Nitrogen (TON) of the effluents under investigation was noticed when using the allochthonous microorganisms together with the autochthonous one. Saccharomyces cerevisiae Y-1347 proved to be the best utilizer of Whey (WhE) organic and nitrogenous compounds with the reduction of BOD, COD and TON by 12.36, 20.09 and 68.42%, respectively. Dekkera bruxellensis proved to be the organism of choice on using Orange Effluent (OE) where BOD, COD and TON were reduced by 18, 20 and 53.39%, respectively. Lactobacillus delbrueckii subsp. bulgaricus proved to be the best utilizer of the Carrot Effluent (CE) constituents by reducing BOD, COD and TON by 24.27, 19.33 and 63.63%, respectively. Dekkera bruxellensis proved to be the best utilizer of the Chocolate Effluent (ChE) constituents by improving its quality and reducing BOD, COD and TON by 18.36 and 15.86 and 73.07%, respectively. A successful trial was made to use the treated effluents in the irrigation of Lens culinaris and Phaseolus vulgaris seeds for germination.