Preliminary studies on bacterial decolorization of H-acid based azo dye-reactive black 5.
A co-culture acclimatized to H-acid was used to degrade Reactive Black 5 (RB 5), a bis azo dye having central H-acid function. The effect of substrate concentration, pH and medium composition on the decolorization has been investigated. Decolorization was found independent of pH. Luria-Bertani broth favored decolorization over Yeast Extract; however further decolorization experiments have been conducted using Yeast Extract. The Michaelis-Menten Kinetic model is found to describe the dependence of specific decolorization rate on the RB 5 dye concentration.
Mohanty
Sagarika
S
National Environmental Engineering Research Institute, Nehru Marg, Nagpur--440020, India.
Neti
Nageswara Rao
NR
Kaul
Santosh Narain
SN
D004396:Coloring Agents / Q000737:chemistry / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D007700:Kinetics; D008962:Models, Theoretical; D009282:Naphthalenesulfonates / Q000737:chemistry / Q000378:metabolism*; D013783:Textile Industry; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000378:metabolism*
D004396:Coloring Agents; D007220:Industrial Waste; D009282:Naphthalenesulfonates; D014874:Water Pollutants, Chemical; C063421:Remazol black B