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. - In: JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING. - ISSN 1093-4529. - 47:2(2012), pp. 228-236. [10.1080/10934529.2012.640894]
Solidification of Cd–bearing zeolitic tuff by reaction with lime
COLELLA, ABNER;DE GENNARO, BRUNO;CAPUTO, DOMENICO;COLELLA, CARMINE
2012
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.