Influencia del tiempo y dosis de carbón de pirólisis de neumáticos usados y activado químicamente, sobre el porcentaje de remoción de arsénico
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Date
2024-04
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Universidad Nacional de Trujillo
Abstract
Se investigaron la influencia de las variables dosis (g/L) y tiempo de contacto (h), de carbón de pirólisis de neumáticos usados (NFU) activado químicamente para la remoción de arsénico de un efluente ácido generado a nivel laboratorio.
Para la remoción de arsénico se utilizó un diseño bifactorial con la variable dosis de carbón activado con los niveles: 1, 2 y 3 (g/L); tiempo de contacto con los niveles: 0.5, 1.5, 3, 6 y 24 h, el carbón llamado negro de carbón o negro de humo se obtuvo del proceso de pirólisis de neumáticos usados de la empresa ECOMASERG, se activó con ácido nítrico y utilización de hidróxido de calcio.
Los resultados obtenidos muestras el mayor valor obtenido de remoción de arsénico fue de 47.25% con dosis de 3 g/L y tiempo de contacto 24 horas, el menor valor fue de 17.46% con dosis de 1 g/L y 0.5 horas de contacto.
Según el análisis de varianza, con un nivel de significancia de 95%, la dosis (g/L) de carbón de pirólisis con valor-P=0.00, el tiempo de contacto (h) valor-P=0.00, la interacción de variables tiene un valor-P= 0.493, por lo que se concluyó que las variables estudiadas influyen significativamente en la remoción de arsénico del efluente generado a nivel laboratorio con relave minero en medio ácido con pH =4.
The influence of the variables dose (g/L) and contact time (h) of chemically activated used tire pyrolysis charcoal (NFU) on the removal of arsenic from an acid effluent generated at laboratory level was investigated. For arsenic removal, a bifactorial design was used with the variable dose of activated carbon with levels: 1, 2 and 3 (g/L); contact time with levels: 0.5, 1.5, 1, 3, 6 and 24 h, the carbon called carbon black or carbon black was obtained from the pyrolysis process of used tires of the company ECOMASERG, activated with nitric acid and use of calcium hydroxide. The results obtained show that the highest arsenic removal value obtained was 47.25% with a dose of 3 g/L and a contact time of 24 hours; the lowest value was 17.46% with a dose of 1 g/L and 0.5 hours of contact. According to the analysis of variance, with a significance level of 95%, the dose (g/L) of pyrolysis coal with P-value=0.00, the contact time (h) P-value=0.00, the interaction of variables has a P-value=0.493, so it was concluded that the variables studied significantly influence the removal of arsenic from the effluent generated at laboratory level with mine tailings in acid medium with pH =4.
The influence of the variables dose (g/L) and contact time (h) of chemically activated used tire pyrolysis charcoal (NFU) on the removal of arsenic from an acid effluent generated at laboratory level was investigated. For arsenic removal, a bifactorial design was used with the variable dose of activated carbon with levels: 1, 2 and 3 (g/L); contact time with levels: 0.5, 1.5, 1, 3, 6 and 24 h, the carbon called carbon black or carbon black was obtained from the pyrolysis process of used tires of the company ECOMASERG, activated with nitric acid and use of calcium hydroxide. The results obtained show that the highest arsenic removal value obtained was 47.25% with a dose of 3 g/L and a contact time of 24 hours; the lowest value was 17.46% with a dose of 1 g/L and 0.5 hours of contact. According to the analysis of variance, with a significance level of 95%, the dose (g/L) of pyrolysis coal with P-value=0.00, the contact time (h) P-value=0.00, the interaction of variables has a P-value=0.493, so it was concluded that the variables studied significantly influence the removal of arsenic from the effluent generated at laboratory level with mine tailings in acid medium with pH =4.
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TECHNOLOGY::Chemical engineering::Metallurgical process and manufacturing engineering::Metallurgical process engineering