This news article was originally written in Spanish. It has been automatically translated for your convenience. Reasonable efforts have been made to provide an accurate translation, however, no automated translation is perfect nor is it intended to replace a human translator. The original article in Spanish can be viewed at La Onubense comprueba la utilidad de los lodos de marmol para tratar residuos ácidos
The from Huelva checks the usefulness of the sludge of marble to treat acidic waste
03/09/2010
September 3, 2010
Geologists from the University of Huelva have confirmed through field trials, in an abandoned mine of Tharsis, the high capacity of waste from the industry of the marble in the regeneration of acid soils contaminated with heavy metals. The study, ' Metal immobilization in hazardous contaminated minesoils after marble slurry waste application. A field assessment at the Tharsis mining district ' has recently been published in the prestigious Magazine Journal of Hazards Materials.
For a year, the researchers Juan Carlos Fernandez Caliani and tape beard Brioso used these waste - basically composed of calcium carbonate micronized - as additives for assisted natural rehabilitation of soils contaminated by acid drainage from the mining tailings. In this way, and after field testing, managed to raise the pH of the solution of the soil from 3.2 to 6, getting an immobilization of potentially toxic elements, such as aluminum, manganese, copper, lead, zinc and cadmium. "The effect caused by soil amendment on the bioavailability and phytotoxicity of these pollutants is a promising result to assist in the natural revegetation of the soil", stress researchers.
Aspect of the vegetation which has grown spontaneously on the experimental plot, after neutralizing the acidity with the carbonate mud.
