Hexavalent chromium bioremoval through adaptation and consortia development from sukinda chromite mine isolates / Jastin Samuel in Industrial & engineering chemistry research, Vol. 51 N° 9 (Mars 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3740-3749 Titre : Hexavalent chromium bioremoval through adaptation and consortia development from sukinda chromite mine isolates Type de document : texte imprimé Auteurs : Jastin Samuel, Auteur ; Madona L Paul, Auteur ; Mrudula Pulimi, Auteur Année de publication : 2012 Article en page(s) : pp. 3740-3749 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Chromite mine isolates Résumé : Indigenous isolates from the waters of chromite mining sites at Sukinda Valley, Orissa, India, showed a considerable enhancement in Cr (VI) bioreduction rate through adaptation and consortia development. On the basis of 16S-rRNA sequencing, these isolates were identified as Bacillus subtilis VTTSUKMW1, Acinetobacter junii VITSUKMW2, and Escherichia coli VITSUKMW3. The native isolates showed a high tolerance at 500-1000 mg L―1 of Cr (VI). An increase in the reduction rate from 0.199-0.477 mg L―1 h―1 to 0.5-1.16 mg L―1 h―1 at 5-20 mg L―1 of initial Cr (VI) concentration was achieved by the adapted isolates. An increase in the growth rate and Cr (VI) reduction rate [0.86―2.6813 mg L―1 h―1 at 5―100 mg L―1 of initial Cr (VI) concentration] was observed in the ternary consortium of adapted isolates. The FT-IR spectra revealed the active participation of the bacterial surface groups in the reduction. The development of sequential processes (native → adapted → consortia) employing Cr (VI) tolerant isolates, proves to be a potential bioremediation strategy for specific chromite mine sites. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201796s [article] Hexavalent chromium bioremoval through adaptation and consortia development from sukinda chromite mine isolates [texte imprimé] / Jastin Samuel, Auteur ; Madona L Paul, Auteur ; Mrudula Pulimi, Auteur . - 2012 . - pp. 3740-3749. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3740-3749 Mots-clés : Chromite mine isolates Résumé : Indigenous isolates from the waters of chromite mining sites at Sukinda Valley, Orissa, India, showed a considerable enhancement in Cr (VI) bioreduction rate through adaptation and consortia development. On the basis of 16S-rRNA sequencing, these isolates were identified as Bacillus subtilis VTTSUKMW1, Acinetobacter junii VITSUKMW2, and Escherichia coli VITSUKMW3. The native isolates showed a high tolerance at 500-1000 mg L―1 of Cr (VI). An increase in the reduction rate from 0.199-0.477 mg L―1 h―1 to 0.5-1.16 mg L―1 h―1 at 5-20 mg L―1 of initial Cr (VI) concentration was achieved by the adapted isolates. An increase in the growth rate and Cr (VI) reduction rate [0.86―2.6813 mg L―1 h―1 at 5―100 mg L―1 of initial Cr (VI) concentration] was observed in the ternary consortium of adapted isolates. The FT-IR spectra revealed the active participation of the bacterial surface groups in the reduction. The development of sequential processes (native → adapted → consortia) employing Cr (VI) tolerant isolates, proves to be a potential bioremediation strategy for specific chromite mine sites. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie201796s

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