Mechanism of aluminum interference on uranium biosorption by Rhizopus arrhizus

Tsezos, M; Georgousis, Z; Remoudaki, E

dc.contributor.author	Tsezos, M	en
dc.contributor.author	Georgousis, Z	en
dc.contributor.author	Remoudaki, E	en
dc.date.accessioned	2014-03-01T01:13:11Z
dc.date.available	2014-03-01T01:13:11Z
dc.date.issued	1997	en
dc.identifier.issn	0006-3592	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12342
dc.subject	Aluminum	en
dc.subject	Biosorption	en
dc.subject	Competing ions	en
dc.subject	Mechanism	en
dc.subject	Rhizopus arrhizus	en
dc.subject	Uranium	en
dc.subject.classification	Biotechnology & Applied Microbiology	en
dc.subject.other	Aluminum	en
dc.subject.other	Biomass	en
dc.subject.other	Composition effects	en
dc.subject.other	Electron microscopy	en
dc.subject.other	Fungi	en
dc.subject.other	Ions	en
dc.subject.other	pH effects	en
dc.subject.other	Precipitation (chemical)	en
dc.subject.other	Reaction kinetics	en
dc.subject.other	Solutions	en
dc.subject.other	Sorption	en
dc.subject.other	X ray analysis	en
dc.subject.other	Biosorption	en
dc.subject.other	Energy dispersive X ray analysis (EDX)	en
dc.subject.other	Ionic competition	en
dc.subject.other	Rhizopus arrhizus	en
dc.subject.other	Uranium	en
dc.subject.other	aluminum	en
dc.subject.other	uranium	en
dc.subject.other	adsorption	en
dc.subject.other	article	en
dc.subject.other	binding competition	en
dc.subject.other	biomass	en
dc.subject.other	kinetics	en
dc.subject.other	metal binding	en
dc.subject.other	nonhuman	en
dc.subject.other	rhizopus	en
dc.subject.other	transmission electron microscopy	en
dc.subject.other	X ray microanalysis	en
dc.title	Mechanism of aluminum interference on uranium biosorption by Rhizopus arrhizus	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/(SICI)1097-0290(19970705)55:1<16::AID-BIT3>3.0.CO;2-#	en
heal.identifier.secondary	http://dx.doi.org/10.1002/(SICI)1097-0290(19970705)55:1<16::AID-BIT3>3.0.CO;2-#	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	Uranium competitive uptake experiments by Rhizopus arrhizus were carried out at three different solution pH levels in the presence of different concentrations of competing aluminum ions in order to examined the competing ion effect. The coion effect became more pronounced as the coion concentration in solution and pH level increased. A preliminary examination of the effect of aluminum on the rate of uranium uptake was also completed. Results showed that the presence of aluminum does not interfere with the kinetics of uranium uptake by R. arrhizus. Electron microscopic and energy dispersive X-ray analyses were also performed on samples of the biomass. The combination of spectral data and the information from the equilibrium studies and the kinetic studies suggested that aluminum interferes with the uranium biosorptive uptake capacity of R. arrhizus by the precipitation of a metastable amorphous hydroxy polymeric precipitate through a mechanism we refer to as steric competition.Uranium competitive uptake experiments by Rhizopus arrhizus were carried out at three different solution pH levels and in the presence of different concentrations of competing aluminum ions in order to examine the competing ion effect. The coion effect became more pronounced as the coion concentration in solution and pH level increased. A preliminary examination of the effect of aluminum on the rate of uranium uptake was also completed. Results showed that the presence of aluminum does not interfere with the kinetics of uranium uptake by R. arrhizus. Electron microscopic and energy dispersive X-ray analyses were also performed on samples of the biomass. The combination of spectral data and the information from the equilibrium studies and the kinetic studies suggested that aluminum interferes with the uranium biosorptive uptake capacity of R. arrhizus by the precipitation of a metastable amorphous hydroxy polymeric precipitate through a mechanism we refer to as steric competition.	en
heal.publisher	John Wiley & Sons Inc, New York, NY, United States	en
heal.journalName	Biotechnology and Bioengineering	en
dc.identifier.doi	10.1002/(SICI)1097-0290(19970705)55:1<16::AID-BIT3>3.0.CO;2-#	en
dc.identifier.isi	ISI:A1997XB90200003	en
dc.identifier.volume	55	en
dc.identifier.issue	1	en
dc.identifier.spage	16	en
dc.identifier.epage	27	en