Publication detail

Fluoride Anion Binding by Natural Lignite (South Moravian Deposit of Vienna Basin)

PEKAŘ, M.

Original Title

Type

journal article - other

Language

English

Original Abstract

Natural lignite from South Moravia was tested for the sorption of fluoride anion in concentration range from 0.05 to 0.8 mmol/l. The lignite removes majority of fluorides and only about 13% of sorption is reversible upon leaching in pure water. Sorption data can be fitted by both Freundlich and Langmuir equations and both isotherms indicate presence of two principal sorption sites or steps. The sorption is fast, at least 90% of final sorbed amount is removed during the first ten minutes but kinetic data show a complex pattern with temporary increase of fluoride concentration. This is attributed to complexity of lignite-water interactions, lignite soaking and swelling in aqueous media. Foreign ions and pH showed only slight influence on the sorbed amount. Natural lignite can be considered as a potential low-cost defluoridation agent that is effective at various solution chemistries and also at low, but still over-limit, fluoride concentrations.

Keywords

Defluoridation; Fluoride; Lignite; Sorption

Authors

PEKAŘ, M.

RIV year

2009

Released

1. 1. 2009

Publisher

Springer-Verlag

ISBN

0049-6979

Periodical

Water, Air, and Soil Pollution (Print version)

Year of study

197

Number

1-4

State

Swiss Confederation

Pages from

303

Pages to

312

Pages count

URL

http://link.springer.com/article/10.1007/s11270-008-9812-y/fulltext.html

Full text in the Digital Library

http://hdl.handle.net/11012/19703

BibTex

@article{BUT48812,
  author="Miloslav {Pekař}",
  title="Fluoride Anion Binding by Natural Lignite (South Moravian Deposit of Vienna Basin)",
  journal="Water, Air, and Soil Pollution (Print version)",
  year="2009",
  volume="197",
  number="1-4",
  pages="303--312",
  doi="10.1007/s11270-008-9812-y",
  issn="0049-6979",
  url="http://link.springer.com/article/10.1007/s11270-008-9812-y/fulltext.html"
}