Ionic competition effects in a continuous uranium biosorptive recovery process

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	2014-03-01T01:13:05Z
dc.date.available	2014-03-01T01:13:05Z
dc.date.issued	1997	en
dc.identifier.issn	0268-2575	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12329
dc.subject	Aluminium	en
dc.subject	Biomass	en
dc.subject	Biosorption	en
dc.subject	Immobilized	en
dc.subject	Ionic competition	en
dc.subject	Silicon	en
dc.subject	Uranium	en
dc.subject.classification	Biotechnology & Applied Microbiology	en
dc.subject.classification	Chemistry, Multidisciplinary	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Aluminum	en
dc.subject.other	Biomass	en
dc.subject.other	Enzyme immobilization	en
dc.subject.other	Recovery	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Silicon	en
dc.subject.other	Sorption	en
dc.subject.other	Spectrum analysis	en
dc.subject.other	Transmission electron microscopy	en
dc.subject.other	Uranium	en
dc.subject.other	Adsorption elution cycles	en
dc.subject.other	Biosorptive recovery process	en
dc.subject.other	Ionic competition effects	en
dc.subject.other	Biotechnology	en
dc.subject.other	aluminum	en
dc.subject.other	uranium	en
dc.subject.other	uranyl nitrate	en
dc.subject.other	biosorption	en
dc.subject.other	fungi	en
dc.subject.other	radionuclide uptake	en
dc.subject.other	sorption	en
dc.subject.other	uranium	en
dc.subject.other	adsorption	en
dc.subject.other	article	en
dc.subject.other	biomass	en
dc.subject.other	biotransformation	en
dc.subject.other	desorption	en
dc.subject.other	immobilized cell	en
dc.subject.other	rhizopus	en
dc.subject.other	waste water management	en
dc.subject.other	Rhizopus arrhizus	en
dc.title	Ionic competition effects in a continuous uranium biosorptive recovery process	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/(SICI)1097-4660(199710)70:2<198::AID-JCTB751>3.0.CO;2-4	en
heal.identifier.secondary	http://dx.doi.org/10.1002/(SICI)1097-4660(199710)70:2<198::AID-JCTB751>3.0.CO;2-4	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	Immobilized Rhizopus arrhizus biomass was studied in a continuous sorption and desorption mode in order to identify factors that affect the long term uranium biosorptive uptake capacity performance of the immobilized biomass. Laboratory-scale continuous operation pilot plant experiments were performed using synthetic uranyl nitrate and industrial uranium mine leachate solutions. Analysis of the liquid solutions indicated that the immobilized Rhizopus arrhizus biomass successfully recovered all of the uranium from the dilute (less than 500 mg U dm-3) solutions. All uranium can subsequently be eluted, yielding highly concentrated uranium eluates. The immobilized Rhizopus arrhizus biomass maintained its uranium biosorptive uptake capacity over 12 successive sorption-elution cycles when synthetic uranyl nitrate solutions were used. However, when used with mine leachate solutions, an 18% reduction in the uranium biosorptive uptake capacity occurred within the first four adsorption-elution cycles. Spectral analysis indicated that, during continuous use and reuse, the immobilized biomass retained its structural integrity. EDAX, scanning and transmission electron microscopic techniques employed on the microbial biomass suggested that the presence of aluminium interferes with the uranium biosorption process. Spectral analysis also indicated that the presence of silicon enhances the negative effect of the presence of aluminium on the uranium biosorptive uptake capacity of the immobilized Rhizopus arrhizus biomass particles.Immobilized Rhizopus arrhizus biomass was studied in a continuous sorption and desorption mode in order to identify factors that affect the long term uranium biosorptive uptake capacity performance of the immobilized biomass. Laboratory-scale continuous operation pilot plant experiments were performed using synthetic uranyl nitrate and industrial uranium mine leachate solutions. Analysis of the liquid solutions indicated that the immobilized Rhizopus arrhizus biomass successfully recovered all of the uranium from the dilute (less than 500 mg U dm-3) solutions. All uranium can subsequently be eluted, yielding highly concentrated uranium eluates. The immobilized Rhizopus arrhizus biomass maintained its uranium biosorptive uptake capacity over 12 successive sorption-elution cycles when synthetic uranyl nitrate solutions were used. However, when used with mine leachate solutions, an 18% reduction in the uranium biosorptive uptake capacity occurred within the first four adsorption-elution cycles. Spectral analysis indicated that, during continuous use and reuse, the immobilized biomass retained its structural integrity. EDAX, scanning and transmission electron microscopic techniques employed on the microbial biomass suggested that the presence of aluminium interferes with the uranium biosorption process. Spectral analysis also indicated that the presence of silicon enhances the negative effect of the presence of aluminium on the uranium biosorptive uptake capacity of the immobilized Rhizopus arrhizus biomass particles.	en
heal.publisher	John Wiley & Sons Ltd, Chichester, United Kingdom	en
heal.journalName	Journal of Chemical Technology and Biotechnology	en
dc.identifier.doi	10.1002/(SICI)1097-4660(199710)70:2<198::AID-JCTB751>3.0.CO;2-4	en
dc.identifier.isi	ISI:A1997YB26600010	en
dc.identifier.volume	70	en
dc.identifier.issue	2	en
dc.identifier.spage	198	en
dc.identifier.epage	206	en