Characteristic of COD and colour removal of azo dye in ozonation and biological treatment

Author

Abidin, Che Zulzikrami Azner ; Ridwan, Fahmi Muhammad

Author_Institution

PPK Alam Sekitar, Univ. Malaysia Perlis (UniMAP), Arau, Malaysia

fYear

2011

fDate

19-20 Sept. 2011

Firstpage

1

Lastpage

5

Abstract

In this research, the characteristic of COD and colour removal of azo dye by ozonation and biological treatment was evaluated for applying in azo dye industrial effluent treatment. Reactive Red 120, Remazol Brilliant Blue, Reactive Green 19 and Reactive Black 5 has been selected amongst azo dyes due to its high solubility in aquatic environment. COD removal was contributed simultaneously by ozonation and biological treatment mechanism at lower ozone doses. However, it was significantly contributed by direct oxidation at higher ozone dose. The biodegradable fraction of COD could be further oxidized and completely removed by ozonation. Consequently, ozone will be competitively consumed by residual COD as well as biodegradable COD if higher ozone dose is applied. Therefore, ozonation is effective for reducing the colour of Reactive Red 120, Remazol Brilliant Blue, Reactive Green 19 and Reactive Black 5.

Keywords

biotechnology; dyes; effluents; industrial waste; ozonation (materials processing); wastewater treatment; COD biodegradable fraction; COD removal; azo dye; biological treatment; colour removal; industrial effluent treatment; ozonation; reactive black 5; reactive green 19; reactive red 120; remazol brilliant blue; Air pollution; Biology; Color; Effluents; Green products; Oxidation; Wastewater; azo dye; biological treatment; chemical oxygen demand (COD); colour removal; ozonation;

fLanguage

English

Publisher

ieee

Conference_Titel

National Postgraduate Conference (NPC), 2011

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4577-1882-3

Type

conf

DOI

10.1109/NatPC.2011.6136281

Filename

6136281