uçar, deniz harran university - engineering faculty - environmental engineering department, Sanliurfa, Turkey

Biological reduction of acid red 14 by elemental sulfur and methanol-based reactors

41163

In this study for the first time, biological reduction of the Acid Red 14 in elemental sulfur-based anaerobic reactor was studied. Two up-flow packed bed reactors were investigated in parallel for 95 days. Sulfur and methanol were used as electron donors in these reactors and the performance of the sulfur-based reduction process was investigated in comparison with a conventional electron source - methanol. The reactors were operated in 7 different periods, the influent dye concentration was kept at 5-10 mg/L and HRT was set to 12-24 hours. While influent Acid Red 14 concentration was 10±0.14 mg/L, it was reduced to 1.3±0.2 in the methanol-based reactor and 2.05±0.2 in the sulfur-based reactor. Elemental sulfur was used for the first time in and the effect of sulfur oxidation in dye reduction process on sulfate and alkalinity production was also investigated.

1125

Acid red 14 , Elemental sulfur , Methanol , Biodegradation , Decolorization

Pamukkale University Journal Of Engineering Sciences

1129