Isabel Herrera

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Coffea arabica L. (arabica coffee), the only tetraploid species in the genus Coffea, represents the majority of the world's coffee production and has a significant contribution to Nicaragua's economy. The present paper was conducted to determine the genetic diversity of arabica coffee in Nicaragua for its conservation and breeding values. Twenty-six(More)
A need to develop environmentally friendly technologies to retrieve precious metals has arisen due to the current mining methods which involve the use of harsh chemicals that endanger the community’s health. Alfalfa biomass has shown in previously performed experiments that it has a substantial ability to bind gold(III) from aqueous solutions in a rapid and(More)
In this study, the use of alfalfa biomass as a cost-effective and environmentally safe technique to recover Ag(I) ions from aqueous solutions is reported. This investigation consisted of batch pH profile, time, temperature, and ionic strength dependence studies. Results showed that alfalfa biomass presented the highest adsorption of Ag(I) ions in the pH(More)
Heavy metals from mining, smelting operations and other industrial processing facilities pollute wastewaters worldwide. Extraction of metals from industrial effluents has been widely studied due to the economic advantages and the relative ease of technical implementation. Consequently, the search for new and improved methodologies for the recovery of gold(More)
Biological systems have shown the ability to uptake heavy metal ions naturally from aqueous solutions. This feature makes likely the utilization of death biological biomass to remove hazardous heavy metal ions from contaminated waters. Previous studies have demonstrated that alfalfa biomass uptakes several heavy metal ions from aqueous solutions. To(More)
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