Bioremoval of Nickel Using Pseudomonas aeruginosa
M. V. Devika
PG and Research Department of Zoology, The American College, Madurai-625 002, Tamil Nadu, India.
A. J. Thatheyus *
PG and Research Department of Zoology, The American College, Madurai-625 002, Tamil Nadu, India.
D. Ramya
PG and Research Department of Zoology, The American College, Madurai-625 002, Tamil Nadu, India.
*Author to whom correspondence should be addressed.
Abstract
Soil samples were collected from an electroplating industry located at Tirunelveli in Tamil Nadu and a nickel resistant bacterial strain was isolated and identified as Pseudomonas aeruginosa which can remove nickel effectively from aqueous solutions. When 200, 400, 600 and 800 ppm of nickel concentrations were tested for ten days, more than 90% removal was observed in 1000 ppm nickel concentration. Among the different cell preparations tested, immobilized cells exhibited highest removal followed by free cells and autoclaved cells after fifty minutes.
Keywords: Nickel, Pseudomonas aeruginosa, biosorption, free cells, immobilized cells and autoclaved cells