Fractionation of Platinum Group Elements in Aqueous Systems:  Comparative Kinetics of Palladium and Platinum Removal from Seawater by emUlva Lactuca/em L.

Jeanette M. Cosden; Johan Schijf; Robert H. Byrne

doi:10.1021/es0259234

Fractionation of Platinum Group Elements in Aqueous Systems: Comparative Kinetics of Palladium and Platinum Removal from Seawater by emUlva Lactuca/em L.

Jeanette M. Cosden, Johan Schijf, Robert H. Byrne

College of Marine Science

Research output: Contribution to journal › Article › peer-review

Abstract

A marine macroalga, Ulva lactuca L., was used as a substrate to compare the kinetics of palladium (Pd) and platinum (Pt) removal from seawater. This work indicates that, while the equilibrium behaviors of Pd and Pt are in many respects similar, their kinetic behaviors are quite distinct. The removal of both Pt(II) and Pt(IV) from seawater by U. lactuca is slower than the removal of Pd(II) by approximately an order of magnitude. Relative Pd and Pt removal rates are strongly influenced by system hydrodynamics. Under quiescent conditions, λ(Pd)/λ(Pt), the ratio of Pd and Pt removal rates, is 7 ± 2, whereas under turbulent conditions λ(Pd)/λ(Pt) can be as large as 27. These observations suggest that the disparate kinetic behaviors of Pd and Pt may produce considerable differences in the environmental dispersion of these elements.

Original language	American English
Journal	Environmental Science Technology
Volume	37
DOIs	https://doi.org/10.1021/es0259234
State	Published - Jan 1 2003

Keywords

Palladium
Seawater
Platinum
Absorption
Kinetics

Disciplines

Life Sciences

Access to Document

10.1021/es0259234License: CC BY

https://doi.org/https://doi.org/10.1021/es0259234

Cite this

@article{eee7faedd8564c13968e06911e89712b,

title = "Fractionation of Platinum Group Elements in Aqueous Systems: Comparative Kinetics of Palladium and Platinum Removal from Seawater by emUlva Lactuca/em L.",

abstract = " A marine macroalga, Ulva lactuca L., was used as a substrate to compare the kinetics of palladium (Pd) and platinum (Pt) removal from seawater. This work indicates that, while the equilibrium behaviors of Pd and Pt are in many respects similar, their kinetic behaviors are quite distinct. The removal of both Pt(II) and Pt(IV) from seawater by U. lactuca is slower than the removal of Pd(II) by approximately an order of magnitude. Relative Pd and Pt removal rates are strongly influenced by system hydrodynamics. Under quiescent conditions, λ(Pd)/λ(Pt), the ratio of Pd and Pt removal rates, is 7 ± 2, whereas under turbulent conditions λ(Pd)/λ(Pt) can be as large as 27. These observations suggest that the disparate kinetic behaviors of Pd and Pt may produce considerable differences in the environmental dispersion of these elements.",

keywords = "Palladium, Seawater, Platinum, Absorption, Kinetics",

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year = "2003",

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doi = "10.1021/es0259234",

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TY - JOUR

T1 - Fractionation of Platinum Group Elements in Aqueous Systems: Comparative Kinetics of Palladium and Platinum Removal from Seawater by emUlva Lactuca/em L.

AU - Cosden, Jeanette M.

AU - Schijf, Johan

AU - Byrne, Robert H.

PY - 2003/1/1

Y1 - 2003/1/1

N2 - A marine macroalga, Ulva lactuca L., was used as a substrate to compare the kinetics of palladium (Pd) and platinum (Pt) removal from seawater. This work indicates that, while the equilibrium behaviors of Pd and Pt are in many respects similar, their kinetic behaviors are quite distinct. The removal of both Pt(II) and Pt(IV) from seawater by U. lactuca is slower than the removal of Pd(II) by approximately an order of magnitude. Relative Pd and Pt removal rates are strongly influenced by system hydrodynamics. Under quiescent conditions, λ(Pd)/λ(Pt), the ratio of Pd and Pt removal rates, is 7 ± 2, whereas under turbulent conditions λ(Pd)/λ(Pt) can be as large as 27. These observations suggest that the disparate kinetic behaviors of Pd and Pt may produce considerable differences in the environmental dispersion of these elements.

AB - A marine macroalga, Ulva lactuca L., was used as a substrate to compare the kinetics of palladium (Pd) and platinum (Pt) removal from seawater. This work indicates that, while the equilibrium behaviors of Pd and Pt are in many respects similar, their kinetic behaviors are quite distinct. The removal of both Pt(II) and Pt(IV) from seawater by U. lactuca is slower than the removal of Pd(II) by approximately an order of magnitude. Relative Pd and Pt removal rates are strongly influenced by system hydrodynamics. Under quiescent conditions, λ(Pd)/λ(Pt), the ratio of Pd and Pt removal rates, is 7 ± 2, whereas under turbulent conditions λ(Pd)/λ(Pt) can be as large as 27. These observations suggest that the disparate kinetic behaviors of Pd and Pt may produce considerable differences in the environmental dispersion of these elements.

KW - Palladium

KW - Seawater

KW - Platinum

KW - Absorption

KW - Kinetics

UR - https://digitalcommons.usf.edu/msc_facpub/1630

UR - https://doi.org/https://doi.org/10.1021/es0259234

U2 - 10.1021/es0259234

DO - 10.1021/es0259234

M3 - Article

VL - 37

JO - Environmental Science Technology

JF - Environmental Science Technology

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