Publication detail

Immobilization of Heavy Metals in Natural Zeolite-blended Cement Pastes

VYŠVAŘIL, M. BAYER, P.

Original Title

Immobilization of Heavy Metals in Natural Zeolite-blended Cement Pastes

Type

journal article in Web of Science

Language

English

Original Abstract

This paper deals with the investigation of efficiency of natural zeolite-blended cement pastes for the immobilization of heavy metals. Natural zeolite was used to partially replace ordinary Portland cement (OPC) at rates of 0% and 20% by weight of a binder and soluble heavy metal salts were added to a mixing water in an amount of 1% and 5% by weight of the binder. The flexural and compressive strength of the cement pastes were investigated, while the leachability of the heavy metals was determined. Additionally, scanning electron microscopy was performed to investigate the microstructure of the cement pastes, while the pore size distribution was analyzed with mercury intrusion porosimetry. The results indicated that the flexural and compressive strengths of the pastes containing 20 wt.% of natural zeolite were higher than those with OPC alone. It was also found out that the effectiveness in reducing the leachability of Ba, Cd, Cu, Ni and Pb was better for the natural zeolite-blended cement pastes.

Keywords

cement paste; heavy metals; immobilization; microstructure; porosity; strength; zeolite

Authors

VYŠVAŘIL, M.; BAYER, P.

Released

26. 9. 2016

Publisher

Elsevier

ISBN

1877-7058

Periodical

Procedia Engineering

Year of study

151

Number

1

State

Kingdom of the Netherlands

Pages from

162

Pages to

169

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S1877705816317519

Full text in the Digital Library

http://hdl.handle.net/11012/203151

BibTex

@article{BUT128673,
  author="Martin {Vyšvařil} and Patrik {Bayer}",
  title="Immobilization of Heavy Metals in Natural Zeolite-blended Cement Pastes",
  journal="Procedia Engineering",
  year="2016",
  volume="151",
  number="1",
  pages="162--169",
  doi="10.1016/j.proeng.2016.07.363",
  issn="1877-7058",
  url="https://www.sciencedirect.com/science/article/pii/S1877705816317519"
}