Volume No. 7 Issue No.: 2A Page No.: 946-957 Oct. - Dec. 2012

 

SIMULTANEOUS REDUCTION OF PHENOL AND CHROMIUM FROM TEXTILE INDUSTRY EFFLUENT USING MIXED CULTURE OF MICROORGANISMS

 

Das Debadatta*1 and Mishra Susmita2

1.Department of Biotechnology and Medical Engineering, National Institute of Tech-nology, Rourkela (INDIA)
2.Department of Chemical Engineering, National Institute of Technology, Rourkela (INDIA)

 

Received on : September 10, 2012

 

ABSTRACT

 

Simultaneous removal of phenol and Cr (VI) from textile industry effluent was achieved with the help of two indigenous microorganisms Pseudomonas putida (MTCC 1194) and Escherichia coli (NCIM 5051). The metabolites, energy and electrons produced during the phenol degradation by Pseudomonas putida are utilized by Escherichia coli for the reduction of Cr (VI). Simultaneous phenol and Cr (VI) degradation is studied at constant Cr (VI) concentration(5 mg l?1) and varying the phenol concentration (50-1000) mg l?1and vice versa. The bioreactor results shows 250 ppm of phenol and 5 ppm of Cr (VI) takes (1820) hours and (1012) hours respectively for their complete degradation when present in aqueous solution containing both phenol and chromium, But in case of textile industry effluent it takes (2830) hours and (1618) hours respectively for their complete degradation indicating the inhibitory effect of organic and inorganic pollutants along with other heavy metals present in the textile industry effluent. The effluent analyzed post treatment confirmed the reduction of chromium and phenol concentrations along with other contaminants to their permissible limits. So the studied indigenous organisms can be very well applied for the treatment of effluents containing the multiple contaminants such as phenol and chromium.

 

Keywords : Textile industry effluent, Chromium, Phenol, Pseudomonas putida, Escherichia coli

 

 

BACK