Potencial fitorremediador da puerária em solo contaminado com diferentes concentrações de cobre

Abstract

Phytoremediation refers to the use of plants to decontaminate polluted soils, especially with heavy metals and organic pollutants, reducing their concentrations to safe levels to human health, in addition to contributing to the improvement of the physical, chemical and biological characteristics of these areas. Thus, it is important to analyze the plants that are in place, and set the same capacity of pollutants retention. Pueraria phaseoloides plant that adapts to the local region was evaluated to determine its potential phytoremediation against Copper extracted from Sossego Copper Mine in Carajás’ Canaan town in the state of Pará. The experiment was developed by the Department of Environment of Maraba, from March to June 2012. The results were submitted to analysis of variance and the average was compared by Tukey test at 5%. It can be concluded that plant growth occurred independently of increased concentrations of Cu, without affecting the growth of the species studied, the same happened with the production of biomass, where the greatest concentration occurred in the treatment with the highest concentration of the metal, However there were differences in leaves production between treatment 4 and 6, but not different from treatment 1; species Pueraria phaseoloides obtained low coefficients of phytoextraction, but the accumulation of Cu in the root indicates a potential fitoestabilizador plant.