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Biosorption of copper from aqueous environments by Micrococcus luteus in cell suspension and when encapsulated

Titelangaben

Letnik, Ilya ; Avrahami, Ron ; Port, Rafi ; Greiner, Andreas ; Zussman, Eyal ; Rokem, J. Stefan ; Greenblatt, Charles:
Biosorption of copper from aqueous environments by Micrococcus luteus in cell suspension and when encapsulated.
In: International Biodeterioration & Biodegradation. Bd. 116 (2017) . - S. 64-72.
ISSN 0964-8305
DOI: https://doi.org/10.1016/j.ibiod.2016.09.029

Abstract

The ability to sequester or tolerate copper has been described for a number of bacteria. It was shown that Micrococcus luteus tolerates copper, and possible mechanisms of uptake for this bacterium have been proposed. Using a count live of M. luteus (CFU), 10% survived a copper concentration of 370 ppm. Maximum sorption capacity was 59 mg of Cu2+/g of dry cells at pH 6. Several proteins of M. luteus with copper affinity were identified by enrichment on a metal-chelating resin followed by LC-MS/MS to identify the metallome. Use of SEM/EDX showed how copper concentrated on the bacterial surface, whereas TEM indicated that copper was found also inside the cells. The enhanced capability of M. luteus to bind copper was tested using three configurations: free cells on an agar surface and cells encapsulated in alginate or in electrospun polymer composites. The latter showed the highest capability to bind copper (∼76 mg Cu2+/g dry cells). Such polymer composites may potentially be used in various water-based applications such as treatment of wastewater with a high concentration of copper or other heavy metals.

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II > Lehrstuhl Makromolekulare Chemie II - Univ.-Prof. Dr. Andreas Greiner
Fakultäten
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 15 Aug 2018 13:52
Letzte Änderung: 15 Aug 2018 13:52
URI: https://eref.uni-bayreuth.de/id/eprint/45478