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Number of results

Journal

2013 | 11 | 6 | 988-1000

Article title

Use of peat-based sorbents for removal of arsenic compounds

Content

Title variants

Languages of publication

EN

Abstracts

EN
It is important to apply sorbent materials for purification of water from arsenic contamination due to serious arsenic pollution worldwide. We have developed new sorbents based on natural materials that provide a cheap and environmentally friendly alternative. For the first time, peat modified with iron compounds and iron humates were tested for sorption of arsenic compounds. The highest sorption capacity was found in peat modified with iron compounds. We have found that sorption of different arsenic speciation forms was strongly dependent on solution pH, reaction time and temperature. Calculations of the sorption process using thermodynamic parameters indicate the spontaneity of sorption process and its endothermic nature. Sorption kinetics showed that most arsenates are removed within 2 hours, and the kinetics of arsenate sorption on modified peat can be described by the pseudo-second order mechanism. [...]

Keywords

Publisher

Journal

Year

Volume

11

Issue

6

Pages

988-1000

Physical description

Dates

published
1 - 6 - 2013
online
28 - 3 - 2013

Contributors

author
  • Department of Environmental Science, University of Latvia, Riga LV, 1586, Latvia
author
  • Department of Environmental Science, University of Latvia, Riga LV, 1586, Latvia
author
  • Department of Environmental Science, University of Latvia, Riga LV, 1586, Latvia

References

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11532-013-0229-0
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