Evolución de las Tecnologías Utilizadas para la Absorción de Mercurio con Cenizas Vegetales en Suelos Contaminados por la Minería de Oro: Evolution of the Technologies Used for the Absorption of Mercury with Vegetable Ashes in Soils Contaminated by Gold Mining

Abstract

Mercury (Hg) is one of the most dangerous contaminants that can be found as a by-product of gold mining, due to its high potential for bioaccumulation and the multiple negative impacts it can have on the environment and human health. The objective of this work is to evaluate the technologies to absorb Hg using vegetable ash (CV) in soils contaminated with this element due to mining. This research is constituted as a descriptive review since it seeks to review the contribution of some technological advances in remediation techniques for soils contaminated with Hg. Among the findings, it stands out that the most predominant CV (BC) are those made from rice husks, BC is a technique that efficiently absorbs Hg in soils, muds and sediments. A large part of the studies in this regard focus on the analysis of the data collected, but the focus that will be given to this work will be specifically on the technologies used in the Hg absorption process itself.