Evaluation of Pseudomonas aeruginosa an innovative bioremediation tool in multi metals ions from simulated system using multi response methodology

• Published in: Bioresource technology 2013-06, Vol.138, p.222-234
• Main Authors: Singh, Rajesh, Bishnoi, Narsi R., Kirrolia, Anita
• Format: Article
• Language: English
• Subjects: Analysis of Variance; Bacteria; Biodegradation, Environmental; Biological and medical sciences; Bioremediation; Biotechnology; Cadmium; Chromium; covariance; effluents; Environment and pollution; enzyme activity; Fundamental and applied biological sciences. Psychology; heavy metals; Hydrogen-Ion Concentration; Industrial applications and implications. Economical aspects; ions; Ions - isolation & purification; Iron; Metal ions; Metals - isolation & purification; Multi response surface methodology; oxidation; Oxidation reduction potential; Oxidation-Reduction; Oxygen - metabolism; Principal Component Analysis; Pseudomonas aeruginosa; Pseudomonas aeruginosa - metabolism; response surface methodology; Simulated effluent; Simulation; wastewater treatment; Water Pollutants, Chemical - isolation & purification; Water Purification - methods
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2013.03.100

•The negative values −0.181 and −0.175 for ORP (mV) and Fe confirming the closeness in the responses.•Addition of the Mn(II) did not significantly reduced the Fe(II) removal in the effluents.•To optimize Cd, Cr, Fe and Mn removal process.•Grouping of the metallic ions on the basis of their removal potential. Under certain conditions bacteria can act as a good biosorbent towards heavy metals in simultaneous removal from effluents. The present study explores overlay plots of multi response surface methodology for simulated wastewater treatment potential. Pseudomonas aeruginosa was used for bioremediation of metallic ions, where removal of Cd (80–90%), Mn (85–90%), Fe (50–55%), Cr (70–75%) can be achieved by fixing the pH, oxidation reduction potential (mV) and one of the metallic constituent in the simulated effluent. The metal ions Cd and Cr (T), Fe and ORP (mV) are relatively closely located to each other in the loading plot indicating co-variance between these components. However Cr(VI) transformation and Mn removal are distantly placed in the bi-plot indicating the existed significant difference. Elevated reductase enzyme activity (31.75μg/minmg) observed in the isolate showing the ability to effectively reduce metals ions.