Treatment of Baker’s Yeast Wastewater with Freshwater Microalga and Its Green Chemistry Evaluation

Authors : Kadriye OKTOR

Pages : 457-463

View : 35 | Download : 8

Publication Date : 2018-09-01

Article Type : Research Paper

Abstract :Baker’s yeast production processes require great amounts of high quality water, where it yields in formation of molasses wastewater and resistant COD insert ignore into journalissuearticles values(Chemical Oxygen Demand);. The Chlorella variabilis microalgae application is studied and evaluated in this paper. The aim was to feed microalgae with the nutrients sustained by molasses; therefore, it was expected an observable growth of them and cleaning of the wastewater. Sample wastewater was 1- centrifuged to remove suspended solids, 2- diluted to various ratios, 3- incubated to grow microalgae, and 4- centrifuged to remove grown microalgae. Final analysis showed the efficiency of COD removal had been maximum 93.33%. The greenness of the method was evaluated by examining the process with respect to principles of green chemistry. It is concluded that the proposed biotechnological approach satisfies 8 principles of green chemistry.
Keywords : Bakers yeast wastewater, COD removal, Chlorella variabilis microalgae, green chemistry

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