El objetivo de la presente investigación es evaluar la degradación del azul de metileno (AzMe) empleando óxido de hierro en su forma de hematita (��� − ������2���3) soportado en liparita, en un reactor empacado de flujo continuo en estado estacionario. La hematita es sintetizada a partir del drenaje ácido de mina, utilizando el pasivo ambiental de Quiulacocha (Simón Bolívar – Región Pasco) aplicando una precipitación selectiva para recuperar el hierro (III). El porcentaje de remoción máximo de AzMe es de 92,0125 % cuando los factores son pH de la precipitación selectiva 3,5; temperatura de la solución coloreada 50°C, concentración de peróxido de hidrógeno 0,15 g/L y caudal de alimentación de 6,0 mL/min y se representan en unidades no codificadas por la ecuación: % ������������������ó��� = 108,83 − ...

In this investigation the degradation of a methylene blue sample was evaluated using the principle of the homogeneous Fenton Like process where iron as a catalyst was recovered from a synthetic sample of acid mine drainage by selective precipitation. Globally, acid mine drainage is considered an important residue of extractive mining and its uncontrolled dumping has negative effects on the ecosystem. Recovering a waste and using it as input to treat another is a relevant opportunity. Selective precipitation of iron was performed using a saturated solution of calcium hydroxide. The precipitated iron (III) hydroxide was solubilized with sulfuric acid to obtain iron (III) sulfate and then was used as a catalyst in the tests of degradation of methylene blue having as variables the amount of iron (III) sulfate, hydrogen peroxide, pH and time. All tests determined a degradation percentage abov...

El objetivo de la investigación es sintetizar el reactivo Fenton a partir del drenaje ácido de mina para la decoloración del azul de metileno. La tendencia mundial a una nueva propuesta en los procesos productivos en función a los principios de la Química Verde y la promoción de las 3Rs (reducir, reutilizar y reciclar), dan la posibilidad de investigar sobre la precipitación selectiva del drenaje ácido de mina para obtener sulfato de hierro(III) y ser utilizado en la síntesis del reactivo Fenton-like. Mediante el diagrama de precipitación se ha determinado el pH de 3.5 para la precipitación selectiva del sulfato de hierro(III) empleando solución saturada de hidróxido de calcio. El hidróxido de hierro(III) recién precipitado y húmedo, es soluble en ácido sulfúrico obteniéndose solución concentrada de sulfato de hierro(III) que es el catalizador en el reactivo Fenton-Li...

Forest masses participate in the hydrological cycle and precipitation patterns. Therefore, the loss of these forest masses has significant implications for atmosphere-surface dynamics. The objective of this article is to determine the influence of forest cover loss on annual rainfall in the departments of Peru during the period 2013-2022. The methodology was quantitative, use: longitudinal non-experimental design, with panel data and a random-effects model was estimated. The results reveal a positive and statistically significant relationship between tree cover loss and total annual precipitation, specifically, a 1% increase in deforestation is related to an average increase of 0.186% in annual rainfall. The findings contrast with most previous evidence documenting reductions in precipitation due to deforestation, however, they are consistent with some studies. The research concluded tha...

Rainfall and temperature are essential inputs for agricultural production, especially climate change- related ones. In turn, it is necessary for the development and survival of both men and animals at all biotic levels. In a reserve of great importance for the country, such as the Pacaya Samiria, these two factors play a preponderant role in the survival of animals and inhabitants ofit. In this paper, VAR analysis with Granger's causality was used to determine the relationship between both variables. It was shown that there was a short-term positive relationship between climate change and rainfall in Pacaya Samiria.