Mechanism of palladium biosorption by microbial biomass. The effects of metal ionic speciation and solution co-ions

Remoudaki, E; Tsezos, M; Hatzikioseyian, A; Karakoussis, V

dc.contributor.author	Remoudaki, E	en
dc.contributor.author	Tsezos, M	en
dc.contributor.author	Hatzikioseyian, A	en
dc.contributor.author	Karakoussis, V	en
dc.date.accessioned	2014-03-01T01:14:48Z
dc.date.available	2014-03-01T01:14:48Z
dc.date.issued	1999	en
dc.identifier.issn	15724409	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13224
dc.subject	Microbial Biomass	en
dc.title	Mechanism of palladium biosorption by microbial biomass. The effects of metal ionic speciation and solution co-ions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S1572-4409(99)80134-5	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S1572-4409(99)80134-5	en
heal.publicationDate	1999	en
heal.abstract	Biosorptive palladium uptake capacities have been quantitatively evaluated through a systematic experimental approach for six selected strains of microbial biomass. Soluble ionic species are of interest for interaction with microbial biomass to quantitatively assess palladium removal by biosorption mechanisms. The ionic species Pd(NH3)42+ and PdCl42- are the main soluble palladium ions present in the process and/or waste waters. Two sets of biosorption experiments have been conducted corresponding to the above soluble palladium ionic complex species. The concentrations of other ions in the contact solutions have been chosen appropriately to define known initial ionic compositions. The obtaiend sorption uptake capacity values revealed that biosorption can be successfully used for palladium sequestering from aqueous solutions. The role of the solutions pH on the biomass characteristics is extensively discussed. Palladium species hydrolysis behavior, chemical coordination, stereochemical characteristics of the metal complexes and the knowledge of solution ionic composition have been proven necessary for the elucidation of the observed palladium biosorption uptake capacities. © 1999 Elsevier B.V. All rights reserved.	en
heal.journalName	Process Metallurgy	en
dc.identifier.doi	10.1016/S1572-4409(99)80134-5	en
dc.identifier.volume	9	en
dc.identifier.issue	C	en
dc.identifier.spage	449	en
dc.identifier.epage	462	en