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2012 | 19 | 4 | 513-531

Article title

Removal of arsenic compounds with peat, peat-based and synthetic sorbents / Usuwania związków arsenu za pomocą torfu, sorbentów na bazie torfu i sorbentów syntetycznych

Content

Title variants

Languages of publication

EN

Abstracts

EN
Arsenic contamination of waters is a global problem; therefore, new approaches for its removal are needed. Peat, peat modified with iron compounds, iron humates and polymeric cation exchangers modified with iron were prepared and tested for sorption of arsenic compounds in comparison with weakly basic anionites. The highest sorption capacity was observed when peat sorbents modified with iron compounds were used. Sorption of different arsenic speciation forms onto iron-modified peat sorbents was investigated as a function of pH and temperature. It was established that sorption capacity increases with a rise in temperature, and the calculation of sorption process thermodynamic parameters indicates the spontaneity of sorption process and its endothermic nature.
PL
Skażenie wód arsenem jest problemem globalnym, dlatego potrzebne są nowe sposoby jego usuwania. Zbadano sorpcję związków arsenu przez torf, torf modyfikowany związkami żelaza, sole żelaza i kwasów humusowych oraz polimerowe kationity modyfikowane żelazem. Wyniki porównano z sorpcją związków arsenu przez anionity słabo zasadowe. Najwyższą wydajność sorpcji zaobserwowano dla torfowych sorbentów modyfikowanych związkami żelaza. Badano sorpcję różnych form specjacyjnych arsenu na sorbentach na bazie torfu modyfikowanych żelazem, w zależności od pH i temperatury. Stwierdzono wzrost pojemności sorpcyjnych tego materiału wraz ze wzrostem temperatury. Obliczone parametry termodynamiczne procesu sorpcji wskazują na samorzutność tego procesu i jego endotermiczność.

Publisher

Year

Volume

19

Issue

4

Pages

513-531

Physical description

Dates

published
1 - 11 - 2012
online
13 - 11 - 2012

Contributors

author
  • Department of Environmental Science, University of Latvia, Raina blvd. 19, Riga, LV 1586, Latvia
author
  • Department of Environmental Science, University of Latvia, Raina blvd. 19, Riga, LV 1586, Latvia
author
  • Department of Environmental Science, University of Latvia, Raina blvd. 19, Riga, LV 1586, Latvia, phone +371 67334096, fax +371 7332704

References

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_v10216-011-0037-4
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