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dc.contributor.authorHogan, David E.
dc.contributor.authorCurry, Joan E.
dc.contributor.authorMaier, Raina M.
dc.date.accessioned2019-06-11T19:36:14Z
dc.date.available2019-06-11T19:36:14Z
dc.date.issued2018-12
dc.identifier.citationHogan DE, Curry JE, Maier RM. Ion Flotation of La3+, Cd2+, and Cs+ using Monorhamnolipid Collector. Colloids and Interfaces. 2018; 2(4):43.en_US
dc.identifier.issn2504-5377
dc.identifier.doi10.3390/colloids2040043
dc.identifier.urihttp://hdl.handle.net/10150/632631
dc.description.abstractWater scarcity is a global issue that is expected to continue increasing in importance in the coming decades. Reclaimed water is one important source available to meet future needs. The reclamation process for wastewaters, particularly from industrial sources, involves the need to remove low-level contaminants. Here we report the efficacy of an ion flotation process that uses the biosurfactant monorhamnolipid as a metal collector to recover Cs+, Cd2+, and La3+ from water. These elements were tested at collector-to-colligend ratios of 2, 5, and 10. The collector-to-colligend ratio and metal valence play a large role in determining flotation success with removal efficiencies varying widely. The maximum removal efficiency for the metals when floated individually were 46.2, 99.8, and 98.6% for Cs+, Cd2+, and La3+, respectively. When mixed together at near equimolar concentrations removal efficiencies were 39.4, 98.4, and 88.1%, respectively. Removal efficiency for Cs+, Cd2+, and La3+ were up to 49.9, 99.5, and 51.5% when mixed at a ratio of 200:10:1, whereas conditional stability constants predict a removal order of La3+ > Cd2+> Cs+. Future research should examine parameters, including pH and ionic strength, that may affect the flotation process as well as actual metal-contaminated waste streams to evaluate the usefulness of this technology.en_US
dc.description.sponsorshipNational Science Foundation (NSF) [DGE-1143953]; University of Arizona Technology and Research Initiative Fund 2015/2016; Water Sustainability Student Fellowship; NSF Networks for Sustainable Molecular Design and Synthesis Grant [CHE-1339597]; Environmental Protection Agencyen_US
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.relation.urlhttp://www.mdpi.com/2504-5377/2/4/43en_US
dc.rights© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectRhamnolipiden_US
dc.subjectmetalen_US
dc.subjection flotationen_US
dc.subjectbiosurfactanten_US
dc.subjectwastewateren_US
dc.titleIon Flotation of La3+, Cd2+, and Cs+ using Monorhamnolipid Collectoren_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Soil Water & Environm Scien_US
dc.identifier.journalCOLLOIDS AND INTERFACESen_US
dc.description.noteOpen access journalen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleColloids and Interfaces
dc.source.volume2
dc.source.issue4
dc.source.beginpage43
refterms.dateFOA2019-06-11T19:36:14Z


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© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
Except where otherwise noted, this item's license is described as © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.