Anaerobic-Aerobic Combined System for the Biological Treatment of Azo Dye Solution using Residual Yeast

Water Environment Research : a Research Publication of the Water Environment Federation
Marina BahiaSilvana Q Silva

Abstract

This study aimed to investigate the treatment efficiency of a synthetic dye solution in an anaerobic-aerobic combined reactor system, using pretreated residual yeast as a nutrient source and redox mediator. The applicability of the residual yeast as a nutrient source was firstly evaluated in anaerobic batch tests. Subsequently, two continuous bench-scale treatment settings were studied: (1) an Upflow Anaerobic Sludge Blanket (UASB) reactor followed by an activated sludge system and, (2) a UASB reactor followed by a shallow polishing pond. The two system configurations were fed with a synthetic azo dye solution of Yellow Gold Remazol (50 mg/L) and pretreated residual yeast (350 mg/L). According to the results, the UASB/shallow polishing pond-combined reactor attained the best values of chemical oxygen demand (COD) (85%) and dye removal (23%).

Citations

Feb 11, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Stanisław Ledakowicz, Katarzyna Paździor
Aug 3, 2021·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Ana Júlia Feuzer-MatosClaudemir M Radetski

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