Facilitated transport of Hg(II) through novel activated composite membranes

M. E. Páez-Hernández; K. Aguilar-Arteaga; M. Valiente; M. T. Ramírez-Silva; M. Romero-Romo; M. Palomar-Pardavé

doi:10.1007/s00216-004-2756-1

Facilitated transport of Hg(II) through novel activated composite membranes

M. E. Páez-Hernández, K. Aguilar-Arteaga, M. Valiente, M. T. Ramírez-Silva, M. Romero-Romo, M. Palomar-Pardavé

Department of Chemistry

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

19 Citations (Scopus)

Abstract

The results presented in this work deal with the prime application of activated composite membranes (ACMs) for the transport of Hg(II) ions in a continuous extraction-re-extraction system using di-(2-ethylhexyl) dithiophosphoric acid (DTPA) as carrier. The effects of variables such as the pH, the nature of the acid and the concentration of the casting solutions on the transport of Hg(II) are also investigated. When the ACM was prepared with a 0.5 M DTPA solution and when the feed solution contained 2.5×10-4 M Hg(II) in 0.1 M HCl, the amount of mercury extracted was greater than 76%. The re-extracted mercury was subsequently recovered by means of a stripping phase comprising 0.3 M thiourea solution in 2 M H2SO4, yielding 54% of the initial amount of mercury after transport had taken place for 180 min. © Springer-Verlag 2004.

Original language	English
Pages (from-to)	690-697
Journal	Analytical and Bioanalytical Chemistry
Volume	380
Issue number	4
DOIs	https://doi.org/10.1007/s00216-004-2756-1
Publication status	Published - 1 Oct 2004

Keywords

Activated composite membrane (ACM)
DTPA
Mercury
Transport

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10.1007/s00216-004-2756-1

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title = "Facilitated transport of Hg(II) through novel activated composite membranes",

abstract = "The results presented in this work deal with the prime application of activated composite membranes (ACMs) for the transport of Hg(II) ions in a continuous extraction-re-extraction system using di-(2-ethylhexyl) dithiophosphoric acid (DTPA) as carrier. The effects of variables such as the pH, the nature of the acid and the concentration of the casting solutions on the transport of Hg(II) are also investigated. When the ACM was prepared with a 0.5 M DTPA solution and when the feed solution contained 2.5×10-4 M Hg(II) in 0.1 M HCl, the amount of mercury extracted was greater than 76%. The re-extracted mercury was subsequently recovered by means of a stripping phase comprising 0.3 M thiourea solution in 2 M H2SO4, yielding 54% of the initial amount of mercury after transport had taken place for 180 min. {\textcopyright} Springer-Verlag 2004.",

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T1 - Facilitated transport of Hg(II) through novel activated composite membranes

AU - Páez-Hernández, M. E.

AU - Aguilar-Arteaga, K.

AU - Valiente, M.

AU - Ramírez-Silva, M. T.

AU - Romero-Romo, M.

AU - Palomar-Pardavé, M.

PY - 2004/10/1

Y1 - 2004/10/1

N2 - The results presented in this work deal with the prime application of activated composite membranes (ACMs) for the transport of Hg(II) ions in a continuous extraction-re-extraction system using di-(2-ethylhexyl) dithiophosphoric acid (DTPA) as carrier. The effects of variables such as the pH, the nature of the acid and the concentration of the casting solutions on the transport of Hg(II) are also investigated. When the ACM was prepared with a 0.5 M DTPA solution and when the feed solution contained 2.5×10-4 M Hg(II) in 0.1 M HCl, the amount of mercury extracted was greater than 76%. The re-extracted mercury was subsequently recovered by means of a stripping phase comprising 0.3 M thiourea solution in 2 M H2SO4, yielding 54% of the initial amount of mercury after transport had taken place for 180 min. © Springer-Verlag 2004.

AB - The results presented in this work deal with the prime application of activated composite membranes (ACMs) for the transport of Hg(II) ions in a continuous extraction-re-extraction system using di-(2-ethylhexyl) dithiophosphoric acid (DTPA) as carrier. The effects of variables such as the pH, the nature of the acid and the concentration of the casting solutions on the transport of Hg(II) are also investigated. When the ACM was prepared with a 0.5 M DTPA solution and when the feed solution contained 2.5×10-4 M Hg(II) in 0.1 M HCl, the amount of mercury extracted was greater than 76%. The re-extracted mercury was subsequently recovered by means of a stripping phase comprising 0.3 M thiourea solution in 2 M H2SO4, yielding 54% of the initial amount of mercury after transport had taken place for 180 min. © Springer-Verlag 2004.

KW - Activated composite membrane (ACM)

KW - DTPA

KW - Mercury

KW - Transport

U2 - 10.1007/s00216-004-2756-1

DO - 10.1007/s00216-004-2756-1

M3 - Article

VL - 380

SP - 690

EP - 697

IS - 4

ER -

Facilitated transport of Hg(II) through novel activated composite membranes

Abstract

Keywords

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