Cyanide in mining. Effects on aquatic plants

El cianuro en la minería. Efectos dobre las plantas acuáticas

El cianuro en la minería. Efectos dobre las plantas acuáticas

Cyanide in mining. Effects on aquatic plants

El cianuro en la minería. Efectos dobre las plantas acuáticas

This book is the product of the interest of the Research Group for Environmental Studies in Water and Soil (GEAAS) of the Department of Chemistry of the Faculty of Exact and Natural Sciences of the University of Caldas in contributing to the study and proposing alternatives for the treatment of the waste generated from gold mining, and in particular, the treatment of residual sands that were cyanidated in the gold extraction process, since they contain high levels of cyanide and their disposal by washing is difficult.

Taking into account the contamination caused by some gold mining practices on ecosystems and the existence in nature of mechanisms for self-purification and control of these alterations, the analysis of the effects of treatment with wastewater (residual sands with high concentration of cyanide) from a mining area in the department of Caldas in the species Eichhornia crassipes (Mart.) Solms, Pistia stratiotes L and Salvinia auriculata Aubl, (commonly known as Water Buchón, Water Lettuce and Water Fern, respectively) in terms of secondary metabolites, cyanide accumulation, photosynthetic changes and toxicity, in order to understand the way in which the species used assimilate the pollutant and how the environmental conditions can affect its phytochemistry to propose, in the future, water treatments residuals in which these species are included.