A model of uranium uptake by plant roots allowing for root-induced changes in the soil

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dc.contributor.authorBoghi, Andrea
dc.contributor.authorRoose, Tiina
dc.contributor.authorKirk, Guy J. D.
dc.date.accessioned2018-03-06T16:52:57Z
dc.date.available2018-03-06T16:52:57Z
dc.date.issued2018-02-21
dc.description.abstractWe develop a model with which to study the poorly understood mechanisms of uranium (U) uptake by plants. The model is based on equations for transport and reaction of U and acids and bases in the rhizosphere around cylindrical plant roots. It allows for the speciation of U with hydroxyl, carbonate, and organic ligands in the soil solution; the nature and kinetics of sorption reactions with the soil solid; and the effects of root-induced changes in rhizosphere pH. A sensitivity analysis showed the importance of soil sorption and speciation parameters as influenced by pH and CO2 pressure; and of root geometry and root-induced acid–base changes linked to the form of nitrogen taken up by the root. The root absorbing coefficient for U, relating influx to the concentration of U species in solution at the root surface, was also important. Simplified empirical models of U uptake by different plant species and soil types need to account for these effects.en_UK
dc.identifier.citationBoghi A, Roose T, Kirk GJD, A model of uranium uptake by plant roots allowing for root-induced changes in the soil, Environmental Science and Technology, Volume 52, Issue, 6, 2018, pp. 3536-3545en_UK
dc.identifier.cris19640218
dc.identifier.issn0013-936X
dc.identifier.urihttp://dx.doi.org/10.1021/acs.est.7b06136
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/13050
dc.language.isoenen_UK
dc.publisherAmerican Chemical Societyen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.titleA model of uranium uptake by plant roots allowing for root-induced changes in the soilen_UK
dc.typeArticleen_UK

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