期刊
WATER ENVIRONMENT RESEARCH
卷 90, 期 8, 页码 729-737出版社
WATER ENVIRONMENT FEDERATION
DOI: 10.2175/106143017X15131012153167
关键词
textile effluent; azo dye; biodegradation; residual yeast
资金
- Minas Gerais Research Foundation (Fapemig) [TEC APQ 01331-13]
- FINEP (Namicro network project)
- Coordination for the Improvement of Higher Education Personnel (Capes)
- Fapemig
- National Council for Scientific and Technological Development (CNPq) from the Brazilian Ministry of Science, Technology and Innovation
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%).
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