naa a22 4500 510750354 CHVBK 20180411083102.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s11270-013-1716-9 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1716-9 Potential of Novel Bacterial Consortium for the Remediation of Chromium Contamination [Elektronische Daten] [Periyasamy Panneerselvam, Girish Choppala, Anitha Kunhikrishnan, Nanthi Bolan] This study was aimed to examine the efficiency of a novel bacterial consortium on the reduction of toxic hexavalent chromium [Cr(VI)] to non-toxic trivalent Cr [Cr(III)]. Six Cr(VI)-resistant bacteria (IS1-IS6) were isolated from a tannery waste disposal site at Mount Barker, South Australia, of which three viz., IS1, IS2 and IS3 were selected based on Cr(VI) reduction ability in minimal salt medium. The isolates were identified as Bacillus endophyticus (IS1), Microbacterium paraoxydans (IS2) and Bacillus simplex (IS3) by 16S rRNA gene sequencing. All three isolates were able to tolerate chromium (Cr(VI), 300-400mgL−1), arsenic (As(V), 1,000mgL−1), copper (Cu(II), 300-400mgL−1) and lead (Pb(II), 1,000mgL−1). The isolates were evaluated both as an individual and as a consortia for Cr(VI) reduction in minimal salt medium and storm water, both spiked with 100mg Cr(VI) L−1. In both cases, the rate of Cr(VI) reduction was found to be significantly higher in the bacterial consortium inoculation (t ½ = 8.45 for minimal salt medium; 6.02h for storm water), compared to inoculation with individual isolates (t ½ = 53.3-115.5h for minimal salt medium; 8.77-9.76h for storm water). The rate of Cr(VI) reduction in both minimal salt medium and storm water was found to be higher in bacterial consortium inoculation (IS1 + IS2 + IS3) than in individual isolate inoculation. This experiment demonstrated that bacterial consortium prepared by using B. endophyticus, M. paraoxydans and B. simplex was more effective in Cr(VI) detoxification than application of individual bacterium. This experiment also proved that a bacterial consortium was more effective in Cr(VI) detoxification than the application of individual bacterial strain. Springer Science+Business Media Dordrecht, 2013 Cr(VI) reduction nationallicence Bacillus sp nationallicence Microbacterium sp nationallicence Bacterial consortium nationallicence Tannery waste nationallicence Bioremediation nationallicence Panneerselvam Periyasamy Indian Institute of Horticultural Research, Hessaraghatta Lake Post, 560089, Bangalore, India aut Choppala Girish Centre for Environmental Risk Assessment and Remediation, University of South Australia, 5095, Mawson Lakes, SA, Australia aut Kunhikrishnan Anitha Chemical Safety Division, Department of Agro-Food Safety, National Academy of Agricultural Science, 441-707, Suwon-si, Gyeonggi-do, Republic of Korea aut Bolan Nanthi Centre for Environmental Risk Assessment and Remediation, University of South Australia, 5095, Mawson Lakes, SA, Australia aut Water, Air, & Soil Pollution Springer Netherlands 224/12(2013-12-01), 1-11 0049-6979 224:12<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1716-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1716-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Panneerselvam Periyasamy Indian Institute of Horticultural Research, Hessaraghatta Lake Post, 560089, Bangalore, India aut NATIONALLICENCE 700 1- Choppala Girish Centre for Environmental Risk Assessment and Remediation, University of South Australia, 5095, Mawson Lakes, SA, Australia aut NATIONALLICENCE 700 1- Kunhikrishnan Anitha Chemical Safety Division, Department of Agro-Food Safety, National Academy of Agricultural Science, 441-707, Suwon-si, Gyeonggi-do, Republic of Korea aut NATIONALLICENCE 700 1- Bolan Nanthi Centre for Environmental Risk Assessment and Remediation, University of South Australia, 5095, Mawson Lakes, SA, Australia aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/12(2013-12-01), 1-11 0049-6979 224:12<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer