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Solidification of Cd–bearing zeolitic tuff by reaction with lime

Colella, Abner / de Gennaro, Bruno / Caputo, Domenico / Colella, Carmine

This article aims to find a reliable procedure by which to remove Cd²⁺ from water and store it safely. The proposed procedure includes Cd²⁺ uptake by a zeolitic tuff, a natural cation exchanger, followed by stabilization of the contaminated solid in a hardened lime matrix. Several tuff-lime pastes were examined and their safety tested by cation leaching and mechanical strength measurement. It was demonstrated that a very cheap mixture, containing only 10% lime, is able to safely retain the harmful cation and may be disposed of in a segregated landfill.

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Solidification of Cd–bearing zeolitic tuff by reaction with lime

Colella, Abner / de Gennaro, Bruno / Caputo, Domenico / Colella, Carmine

This article aims to find a reliable procedure by which to remove Cd²⁺ from water and store it safely. The proposed procedure includes Cd²⁺ uptake by a zeolitic tuff, a natural cation exchanger, followed by stabilization of the contaminated solid in a hardened lime matrix. Several tuff-lime pastes were examined and their safety tested by cation leaching and mechanical strength measurement. It was demonstrated that a very cheap mixture, containing only 10% lime, is able to safely retain the harmful cation and may be disposed of in a segregated landfill.

Solidification of Cd–bearing zeolitic tuff by reaction with lime

Colella, Abner / de Gennaro, Bruno / Caputo, Domenico / Colella, Carmine

This article aims to find a reliable procedure by which to remove Cd²⁺ from water and store it safely. The proposed procedure includes Cd²⁺ uptake by a zeolitic tuff, a natural cation exchanger, followed by stabilization of the contaminated solid in a hardened lime matrix. Several tuff-lime pastes were examined and their safety tested by cation leaching and mechanical strength measurement. It was demonstrated that a very cheap mixture, containing only 10% lime, is able to safely retain the harmful cation and may be disposed of in a segregated landfill.

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Title:

Solidification of Cd–bearing zeolitic tuff by reaction with lime

Contributors:

Colella, Abner (author) / de Gennaro, Bruno (author) / Caputo, Domenico (author) / Colella, Carmine (author)

Published in:

Journal of Environmental Science and Health, Part A ; 47 ; 228-236

Publication date:

2012-01-15

Size:

9 pages

ISSN:

1093-4529 , 1532-4117

DOI:

https://doi.org/10.1080/10934529.2012.640894

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

Keywords:

Phillipsite-chabazite-rich tuff , hydraulic lime pastes , portland cement pastes , cadmium stabilization-solidification

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