Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 16, Issue 1, 2014; Page No.(179-184)

PERFORMANCE OF IMMOBILIZED BACILLUS SUBTILIS SUBSP. SUBTILIS ôRA-29ö IN CONGO RED DECOLOURIZATION

RAJESH SAWHNEY, ARUN KUMAR, ROBINA AND JAYATA

Abstract

Congo red, a carcinogenic diazo dye is discharged through industrial effluents in the environment. The removal of this hazardous dye from effluents is important for health and environment protection. In recent past, immobilization has come up as a promising biological tool. The present study highlights the immobilization of Bacillus subtilis sub sp. subtilis RA-29" on a suitable matrix and the potential of immobilized whole cells to decolourize congo red. The whole cell immobilized calcium alginate beads were stable for 7 days. The immobilized RA-29 exhibited cell density dependent decolourization. Maximum congo red decolourization (81.55%) was achieved at cell density of 30ug/mm3 after 48 hr of incubation at 370C under static condition. The calcium alginate immobilized “RA-29” showed operational stability with efficient decolourization up to five cycles with minimum decolourization percentage falling to 61.11%. The immobilized Bacillus subtilis could be commercially viable biotechnological tool for bioremediation of dye contaminated industrial effluents.

Enter your contact information below to receive full paper.
Your Name :
Email:
Phone:
City:
Cost of Full Paper: Rs.75 for Indian Nationals or $20 (USD) for international subscribers.
By clicking on Request Paper you Agree to pay the above mentioned cost per paper.