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https://purl.org/pe-repo/ocde/ford#2.11.04
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https://purl.org/pe-repo/ocde/ford#2.07.00
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https://purl.org/pe-repo/ocde/ford#6.04.08
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Electrocoagulación
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1
artículo
Publicado 1999
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The problem of the BOARD specifically focuses on the calculations should be made to pay one of the 10 components to be removed from it after giving it remained for 3 months.
2
artículo
Publicado 2016
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At present an environmental problem are refractory organic compounds such as dyes, which interfere with photosynthetic processes carried out by organisms in water bodies. Contaminants present in wastewater from industries such as textiles, paper, and pharmaceutical tannery among others, whose processes generate large volumes. The objective of this research was to remove dyes synthetic effluent textile, applying advanced technology to which electrocoagulation is used, this research allows to carry out a treatment without reagents, using electrical charges which destabilize the colloidal particles facilitating their precipitation, for which iron electrodes used with 0,8 mm spacing. The methodology is based on variations in current density, pH and residence time, the response variables are percentage of color removal and chemical oxygen demand. As a result of the experimentations removal ef...
3
artículo
Publicado 2016
Enlace
Enlace
At present an environmental problem are refractory organic compounds such as dyes, which interfere with photosynthetic processes carried out by organisms in water bodies. Contaminants present in wastewater from industries such as textiles, paper, and pharmaceutical tannery among others, whose processes generate large volumes. The objective of this research was to remove dyes synthetic effluent textile, applying advanced technology to which electrocoagulation is used, this research allows to carry out a treatment without reagents, using electrical charges which destabilize the colloidal particles facilitating their precipitation, for which iron electrodes used with 0,8 mm spacing. The methodology is based on variations in current density, pH and residence time, the response variables are percentage of color removal and chemical oxygen demand. As a result of the experimentations removal ef...
4
artículo
In the process of copper -molybdenum separation is sometimes used reactive phosphorus pentasulfide P2S5 as copper depressant , which causes pollution problems in the final match molybdenite concentrates . The further processing that is performed to these concentrates to produce molybdenum trioxide , produces an increase in the concentration of this element in the final product of 0.05% by hampering commercialization. Due to the above, a study was conducted to hydrometallurgical laboratory scale aimed at finding the optimum conditions of the present process to remove phosphorus so that the content in the molybdenite concentrate is less than 0.04% . The study contemplated a sulfuric acid leaching environment, under different experimental conditions , which were able to remove about 51 % of the phosphorus present in the molybdenite concentrate , lowering the phosphorus content less than 0.0...
5
artículo
In the process of copper -molybdenum separation is sometimes used reactive phosphorus pentasulfide P2S5 as copper depressant , which causes pollution problems in the final match molybdenite concentrates . The further processing that is performed to these concentrates to produce molybdenum trioxide , produces an increase in the concentration of this element in the final product of 0.05% by hampering commercialization. Due to the above, a study was conducted to hydrometallurgical laboratory scale aimed at finding the optimum conditions of the present process to remove phosphorus so that the content in the molybdenite concentrate is less than 0.04% . The study contemplated a sulfuric acid leaching environment, under different experimental conditions , which were able to remove about 51 % of the phosphorus present in the molybdenite concentrate , lowering the phosphorus content less than 0.0...
6
artículo
Publicado 2016
Enlace
Enlace
At present an environmental problem are refractory organic compounds such as dyes, which interfere with photosynthetic proces-ses carried out by organisms in water bodies. Contaminants present in wastewater from industries such as textiles, paper, and pharmaceutical tannery among others, whose processes generate large volumes. The objective of this research was to remove dyes synthetic effluent textile, applying advanced technology to which electrocoagulation is used, this research allows to carry out a treatment without reagents, using electrical charges which destabilize the colloidal particles facilitating their precipitation, for which iron electrodes used with 0,8 mm spacing. The methodology is based on variations in current density, pH and residence time, the response variables are percentage of color removal and chemical oxygen demand. As a result of the experimentations removal e...
7
artículo
Publicado 2023
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Enlace
En este trabajo se presenta la síntesis de Oxido de Titanio (IV) dopado con tierras raras para remoción de cianuro en sistemas acuosos. La síntesis se realizó por el método Sol-gel a partir de un precursor orgánico de Titanio que nos permite obtener la fase anatasa; se obtuvieron 4 materiales uno puro y 3 dopados con Lantano, Cesio y Europio al 1% de concentración molar respectivamente. Los materiales obtenidos se caracterizaron por Difracción de rayos x, Fluorescencia de rayos x, Espectroscopia infrarroja y Microscopia. A cada material de evaluó el porcentaje de remoción de cianuro aplicando una dosis de 1g/L de material a una solución acuosa de 40 mg/L de CN- con ayuda de un reactor con lampara UV que favorece la fotocatálisis y flujo continuo de la solución durante 120 min, cada 20 min se determinó la concentración de CN- para ello se validó un método espectrofotomét...
8
artículo
Publicado 2021
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One of the main residues generated in the dairy industry is whey, due to its high organic load it represents a serious environmental problem when it is disposed of to receiving natural bodies, altering its environmental quality. The efficiency of a combined system composed of electrocoagulation and biological filter was evaluated; for which the electrocoagulation process was carried out in a batch reactor with aluminum and iron electrodes, the biological filter was packed with biomass composed of: Bacillus spp, Acinetobacter spp, Lactobacillus spp and Streptococcus spp. Electrocoagulation was responsible for reducing the organic load by more than 80% and the biological filter working with an average organic load of 1405 mg / L of BOD5 contributed to the reduction of the remaining organic load; the combined electrocoagulation-biological filter system with recirculation achieved a removal ...
9
artículo
Publicado 2021
Enlace
Enlace
One of the main residues generated in the dairy industry is whey, due to its high organic load it represents a serious environmental problem when it is disposed of to receiving natural bodies, altering its environmental quality. The efficiency of a combined system composed of electrocoagulation andbiological filter was evaluated; for which the electrocoagulation process was carried out in a batch reactor with aluminum and iron electrodes, the biological filter was packed with biomass composed of: Bacillus spp, Acinetobacter spp, Lactobacillus spp and Streptococcus spp. Electrocoagulation was responsible forreducing the organic load by more than 80% and the biological filter working with an average organic load of 1405 mg / L of BOD5 contributed to the reduction of the remaining organic load; the combined electrocoagulation-biological filter system with recir...
10
artículo
Publicado 1999
Enlace
Enlace
El problema de la JUNTA, específicamente, se centra en los cálculos que se deberá efectuar para pagar a uno de los 10 componentes que se va a retirar de ella luego de haber permanecido aportando en ella durante 3 meses.
11
artículo
Publicado 2020
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El presente trabajo permite resolver un grave problema económico-ambiental que afecta a la comunidad al tener unidades de tratamiento con bajo niveles de eficiencia y altos costos de operación por la adición en exceso de reactivos. Mediante la investigación aplicada y experimental, se realizó un diagnóstico para determinar los requerimientos de mantenimiento, la identificación de las concentraciones y el lugar exacto en donde se adicionan las soluciones que demanda el agua residual. Los resultados alcanzados en las pruebas establecen que la dosificación ideal de sulfato de aluminio fue de 250 ppm para la maximización de la eficiencia de remoción de la contaminación en la unidad de tratamiento en un valor mayor al 90%.
12
artículo
Publicado 2020
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This study makes it possible to resolve a serious environmental-economic problem that affects the community, caused by treatment plants with low levels of efficiency and high operating costs due to the excessive addition of reagents. After applied and experimental research, a diagnosis was made to determine the maintenance requirements, the identification of the concentrations and the exact point where solutions needed for wastewater treatment should be added. The results obtained establish that the ideal dosage of aluminum sulfate for maximizing the contaminant removal efficiency in the treatment plant at a value greater than 90% was 250 ppm.
13
artículo
Publicado 2025
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Water intended for human consumption faces increasing contamination by arsenic, a toxic metalloid naturally present or derived from anthropogenic activities, whose prolonged exposure poses a serious public health risk. In response to this problem, the study aimed to evaluate the effectiveness of natural red clay as an ecological adsorbent for arsenic removal from water. A Plackett–Burman experimental design was applied to identify the significant variables, and the Response Surface Methodology (RSM) was used to optimize the process. Six factors were analyzed, among which the Pareto analysis identified firing temperature, Fe₂O₃ content, and red clay percentage as the most influential factors, with a significance level of α = 0.05 and a determination coefficient of R² = 0.74. Subsequently, optimization through RSM achieved a maximum arsenic removal of 85.1% under conditions of 90% ...
14
artículo
Publicado 2020
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Environmental contamination by heavy metals represents a serious problem for humans and the ecosystem due to its degree of toxicity, which is why it is necessary to have treatment alternatives for its disposal. The bioremediation process of the lead (II) and cadmium (II) metals was carried out; through the use of native fungi isolated from the oxidation pool of the metallurgical laboratory of the National University of San Agustín, Arequipa - Peru; in Sabouraud dextrose and potato dextrose broth culture media, the fungal strains were cultivated to carry out the lead (II) and cadmium (II) removal tests, a batch system was used and the removal percentage was determined. Rhizopus sp and Aspergillus niger were isolated and identified; in the removal tests it was determined that Rhizopus sp was the strain that most removed the lead (II) in 86.39 %, cadmium (II) in 69.23 % and the mixture in ...
15
tesis de grado
Publicado 2023
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El presente trabajo de investigación busca brindar una alternativa de solución al problema identificado en una de las principales agencias de aduanas en el Perú. El problema es la demora en la gestión de retiros de carga programados para sus clientes. Luego de evaluar las cuatro alternativas propuestas en el trabajo, la propuesta elegida es la mejora en la capacitación del personal temporal a través de materiales de apoyo tales como los manuales de procesos, flujogramas, vídeos instructivos o infografías. Para llegar a la alternativa elegida se tomó en cuenta las propuestas vistas en los antecedentes de investigación alineados a la problemática mencionada y se identificaron las teorías tales como Lean, Ciclo Deming, gestión de conocimiento, entre otras con la finalidad de optimizar parte de sus procesos. Por último, esta investigación tiene como objetivo mejorar la ventaja...
16
artículo
Publicado 2025
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Introduction: Impacted teeth may sometimes be asymptomatic but can also be associated with serious complications such as infections, cysts, or tumors. The common symptoms of impacted teeth include pain, swelling, and/or trismus (difficulty opening the mouth). Despite the potential for complications, public awareness of impacted teeth is low. Thus, this research aims to assess the awareness and consequences of impacted teeth among non-medical students. Materials and methods: This cross-sectional study was conducted among non-medical students in Salem, Tamil Nadu, India. A validated standard questionnaire was prepared in English with multiple-choice and yes or no questions. The survey was conducted online, and the validated questionnaire with an appended informed consent form was sent via Google Form application. The questionnaire consisted of questions about awareness of and the consequen...
17
artículo
The great irony of migration in the world (leaving one’s homeland to settle in a different land) is that it takes thousands of years as an alternative for survival, for a humanity that is errant in essence and origin, while governments and states make mountains out of molehills thinking about how to be free of it because they look at it as a way and means of life that is strange, marginal and threatening. The fact that migration has tripled in volume and complexity due to violence, inequality and poverty, and become an unmanageable global problem, poses the unprecedented challenge of making migration more inclusive in the humanitarian and legal sense. Its very nature should not instill fear nor rejection but understanding and solutions instead. Recognition of the migrant’s rights should be in perfect counterbalance to their recognition of their obligations. To remove repression and x...
18
tesis de grado
Publicado 2018
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La contaminación de fuentes hídricas por diferentes actividades, entre ellas las aguas residuales, es una problemática que ha incrementado por el crecimiento poblacional e industrial. Se han desarrollado diferentes fases en su tratamiento, necesitando un tratamiento terciario con procesos fisicoquímicos que resultan costosos; sin embargo, una alternativa interesante es el empleo de microalgas como biosistema, debido a su capacidad de capturar cantidades significativas de Nitratos y Fosfatos durante su crecimiento. Es así que, en el primer semestre del 2017, se evaluó la capacidad de remoción NO3- y PO43- de la microalga D. asymmetricus en aguas residuales de la Planta de Tratamiento la TABOADA y a su vez, se buscó reconocer si esto se ve influenciado por la limitación de nutrientes (72 hrs). Se utilizaron dos tratamientos, T4 (inóculo + agua residual) y T5 (inóculo estresado +...
19
tesis de grado
Publicado 2020
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El inadecuado manejo de residuos líquidos de los camales, los mismos que por su procedencia contienen una alta concentración de materia orgánica al ser descargada en cuerpos de agua provoca serios problemas, tales como muerte de diversos organismos y problemas de salud pública (2). Debido a ello se han estudiado por más de 50 años la utilización de microalgas para remoción de nutrientes, comprobándose que la biomasa algal obtenida posee un alto contenido de proteínas, lípidos y carbohidratos (6). El objetivo fue evaluar la remoción de contaminantes de los residuos líquidos vertidos por el Camal Municipal de Punchana utilizando tres géneros de microalgas, así como también su evaluación en la producción de biomasa y acumulación de lípidos totales. La evaluación consistió en exponer a las microalgas Chlorella sp, Scenedesmus sp. y Ankistrodesmus sp. a residuos líquido...
20
tesis de grado
Publicado 2024
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Introduccion: El presente trabajo analiza la efectividad de las medidas de protección frente a la violencia psicológica hacia mujeres en Ayacucho durante el año 2022. El objetivo fue evaluar cómo estas medidas, como el retiro del agresor y la prohibición de contacto, contribuyen a la protección de las víctimas y su impacto en su salud mental y dignidad. Se empleó una metodología cualitativa basada en entrevistas a expertos y revisión de normativas legales. Los resultados evidenciaron que, aunque estas medidas son esenciales, enfrentan barreras significativas como la falta de recursos, demoras en los procesos judiciales, y escasa coordinación entre las autoridades, además de prejuicios y miedo que dificultan las denuncias por parte de las víctimas. Se concluye que las medidas de protección tienen un impacto positivo, pero su efectividad está limitada por deficiencias operat...
