This research allows studying the evolution of the ozone concentration in the troposphere using the Polymath simulation software, considering the reaction mechanisms that involve the generation of ozone from the knowledge of the values ​​of the kinetic constants. This software simply encodes the differential equations from the matter balances involved with ozone formation. From the proposed dispersion models, the Batch reactor and the semi-continuous reactor in the predominant direction of the wind have been considered to obtain the chemical equations in each case under the conditions of thermal inversion and in a second case without these conditions. . The forecast allows to know in advance the ozone concentrations at different times of the day, to obtain an early warning of the concentration levels and take the necessary personal precautions; It will also save resources compared to...

This research allows studying the evolution of the ozone concentration in the troposphere using the Polymath simulation software, considering the reaction mechanisms that involve the generation of ozone from the knowledge of the values ​​of the kinetic constants. This software simply encodes the differential equations from the matter balances involved with ozone formation. From the proposed dispersion models, the Batch reactor and the semi-continuous reactor in the predominant direction of the wind have been considered to obtain the chemical equations in each case under the conditions of thermal inversion and in a second case without these conditions. . The forecast allows to know in advance the ozone concentrations at different times of the day, to obtain an early warning of the concentration levels and take the necessary personal precautions; It will also save resources compared to...

El objetivo de este artículo es dar a conocer los resultados del estudio de investigación llevado en la Universidad Nacional Mayor de San Marcos en el año 2013. Uno de los objetivos del estudio fue la evaluación de la calidad ambiental del ecosistema de la bahía de Ancón, que se realizó mediante un monitoreo de los principales parámetros físicos, químicos y biológicos en la zona litoral y zona marina de la bahía. Los resultados fueron contrastados con los límites máximos permisibles establecidos en el estándar de calidad ambiental de agua correspondiente a la categoría 2 (actividades marino costeras) y 4 (conservación del medio ambiente acuático) del D.S. N° 002-2008-MINAM. La bahía de Ancón es un ecosistema natural, valioso por su complejidad, belleza paisajística y sustento de actividades como la pesca, el turismo y el comercio. Sin embargo, está sujeta a posible...

El objetivo de este artículo es dar a conocer los resultados del estudio de investigación llevado en la Universidad Nacional Mayor de San Marcos en el año 2013. Uno de los objetivos del estudio fue la evaluación de la calidad ambiental del ecosistema de la bahía de Ancón, que se realizó mediante un monitoreo de los principales parámetros físicos, químicos y biológicos en la zona litoral y zona marina de la bahía. Los resultados fueron contrastados con los límites máximos permisibles establecidos en el estándar de calidad ambiental de agua correspondiente a la categoría 2 (actividades marino costeras) y 4 (conservación del medio ambiente acuático) del D.S. N° 002-2008-MINAM. La bahía de Ancón es un ecosistema natural, valioso por su complejidad, belleza paisajística y sustento de actividades como la pesca, el turismo y el comercio. Sin embargo, está sujeta a posible...

This research aims to explore possible solutions to the problems presented in auriferous sulfide minerals , which have cianicidas by metals ( Gold companions ) can not be cyanide by high reagent consumption , which makes the process uneconomical . Also be a problem hitting the small domestic mining sites that have these features that can not be traded concentrates by high penalties imposed on them , then creating a social problem that should be taken into account. At the experimental level by testing and subsequent acid leach cyanidation seek to find a process that allows for adequate separation of gold copper and other species also have high technical and economic efficiency. Exploratory tests shown indicate the feasibility of finding the right process for the investigated mineral content has Gold , chalcopyrite , malachite , magnetite , hematite , goethite , covellite , chalcocite , an...

This research aims to explore possible solutions to the problems presented in auriferous sulfide minerals , which have cianicidas by metals ( Gold companions ) can not be cyanide by high reagent consumption , which makes the process uneconomical . Also be a problem hitting the small domestic mining sites that have these features that can not be traded concentrates by high penalties imposed on them , then creating a social problem that should be taken into account. At the experimental level by testing and subsequent acid leach cyanidation seek to find a process that allows for adequate separation of gold copper and other species also have high technical and economic efficiency. Exploratory tests shown indicate the feasibility of finding the right process for the investigated mineral content has Gold , chalcopyrite , malachite , magnetite , hematite , goethite , covellite , chalcocite , an...

Taking the Peru a leadership in the production of metals in the world, the world’s largest producer of silver, the second of copper and zinc, and the sixth in gold, it is necessary to develop intensive metallurgical research to give greater technological value to our concentrates. In the framework of clean technologies direct reduction of sulphides is of interest in metallurgical processes for obtaining base metal. In this investigation shows results of the kinetics of direct reduction of the chalcopyrite of complex marañón with coal in the presence of dolomite as an opportunity to produce copper from a sulphide avoiding air pollution. We studied the effect of the variables involved in the reduction carbotermica: Temperature, reasons molars of reactants, being kinetic model that we describe the phenomenology of reduction process of the chalcopyrite.

Taking the Peru a leadership in the production of metals in the world, the world’s largest producer of silver, the second of copper and zinc, and the sixth in gold, it is necessary to develop intensive metallurgical research to give greater technological value to our concentrates. In the framework of clean technologies direct reduction of sulphides is of interest in metallurgical processes for obtaining base metal. In this investigation shows results of the kinetics of direct reduction of the chalcopyrite of complex marañón with coal in the presence of dolomite as an opportunity to produce copper from a sulphide avoiding air pollution. We studied the effect of the variables involved in the reduction carbotermica: Temperature, reasons molars of reactants, being kinetic model that we describe the phenomenology of reduction process of the chalcopyrite.

This article describes the cementation process of leached solutions from copper sulphide ores being and without being toasted. With favorable results in this study, we get the pattern for the feasibility of moving from the classical technology of concentration to the technology of cementation of copper sulfide minerals containing silver and gold. Simulation steps have been performed considering the different variables involved in the process such as time, agitation, solution concentration, pH and others. A kinetic model of copper cementation from PLS solutions purified by Solvent Extraction (SX) has been developed and it has the following form: C = 6.08 exp (- 0.03 t) Recoveries were obtained greater than 90% copper, which gives the possibility to improve the costs of national ores and con- centrates, as well as to open a favorable scenario for new national metallurgical projects.

This article describes the cementation process of leached solutions from copper sulphide ores being and without being toasted. With favorable results in this study, we get the pattern for the feasibility of moving from the classical technology of concentration to the technology of cementation of copper sulfide minerals containing silver and gold. Simulation steps have been performed considering the different variables involved in the process such as time, agitation, solution concentration, pH and others. A kinetic model of copper cementation from PLS solutions purified by Solvent Extraction (SX) has been developed and it has the following form: C = 6.08 exp (- 0.03 t) Recoveries were obtained greater than 90% copper, which gives the possibility to improve the costs of national ores and con- centrates, as well as to open a favorable scenario for new national metallurgical projects.