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Removal of Zn and Cd from Overlying Water by Mangrove Sediments: Testing the Effects of Sediment Resuspension/Redeposition Events

2020Journal article Restricted access
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dc.contributor.authorSuzuki, K. N.
dc.contributor.authorCastro, R. J. M.
dc.contributor.authorSondermann, Melissa N.
dc.contributor.authorMachado, E. C.
dc.contributor.authorBellido, A. B.
dc.contributor.authorLopes, R. T.
dc.contributor.authorMachado, W.
dc.date.accessioned2020-07-27T15:57:24Z
dc.date.available2020-07-27T15:57:24Z
dc.date.issued2020
dc.description.abstractCoastal sediment redeposition after resuspension events may change the sediment capacity to sequester pollutants after the formation of new sediment-water interfaces. To test this hypothesis, radiotracer experiments were performed to evaluate zinc (65Zn) and cadmium (109Cd) removal kinetics by redeposited mangrove sediments. After 24-h experiments, average inventories within redeposited sediments were close to those from control sediments (~ 20% lower in redeposited sediments), while average decreases of 41% (109Cd) and 27% (65Zn) in the half-removal times (t1/2) from overlying water were promoted by redeposited sediments in comparison with control sediments. High variability in metal removal rates, however, implied in no statistically significant differences between t1/2 values, suggesting a low influence of sediment redeposition on the metal removal capacity of mangrove sediments. More limited depth diffusion of metals was observed within redeposited sediments, always within the uppermost centimeter. Possible benefits to water quality by a slightly faster metal diffusion into redeposited sediments may be less effective due to this trend since the metal retention very close to the sediment top can facilitate new remobilization to the overlying water.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSuzuki, K.N., Castro, R.J.M., Sondermann, M.N. et al. (2020). Removal of Zn and Cd from Overlying Water by Mangrove Sediments: Testing the Effects of Sediment Resuspension/Redeposition Events. Water Air Soil Pollut 231, 42pt_PT
dc.identifier.doi10.1007/s11270-020-4417-1pt_PT
dc.identifier.urihttp://hdl.handle.net/10451/44181
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Nature [academic journals on nature.com]pt_PT
dc.relation.publisherversionhttps://link.springer.com/article/10.1007/s11270-020-4417-1pt_PT
dc.subjectTrace metalspt_PT
dc.subjectRadiotracerspt_PT
dc.subjectRemoval kineticspt_PT
dc.subjectDiffusionpt_PT
dc.subjectSedimentspt_PT
dc.titleRemoval of Zn and Cd from Overlying Water by Mangrove Sediments: Testing the Effects of Sediment Resuspension/Redeposition Eventspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue2pt_PT
oaire.citation.titleWater, Air, and Soil Pollutionpt_PT
oaire.citation.volume231pt_PT
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT

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