Adsorption capacity of lead with cationics exchangers of xanted coal

Capacidad de adsorción de plomo con intercambiadores catiónicos de carbón xantado

dc.creatorColpas Castillo, Fredy
dc.creatorTarón Dunoyer, Arnulfo
dc.creatorVasquez, Yelitza
dc.date2017-12-31
dc.date.accessioned2023-08-28T15:12:15Z
dc.date.available2023-08-28T15:12:15Z
dc.identifierhttps://revistas.udca.edu.co/index.php/ruadc/article/view/399
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8442524
dc.descriptionThis study describes the adsorption of lead (Pb2+) in aqueous solutions of modified coal by treatment with CS2 and NaOH, using a ratio of 16,6:1 NaOH/coal (w/w) and 4,08 CS2/coal (w/w). Different tests such as acidity, kinetic and adsorption isotherms were carried out in order to assess the adsorption capacity of xanted and non-xanted coal. The sulfur groups presented in the xanted coal were identified by infrared spectroscopy(FTIR) and they were compared with non-xanted coal spectrum. The results show that the best lead removal in the solution (with a concentration of 100mg Pb2+/L and 50mg of adsorbent) was obtained at pH 5.0 for both coal (xanted and non-xanted) with an adsorption percentage of 98%. The kinetic studies indicate that the adsorption process can reach the equilibrium in about 120 minutes, following a pseudo-second order kinetics for both materials. The isotherms study indicates that the coal fits best to a Langmuir-type isotherm, however when the coal is xanted, it fits best to a Freundlich-type isotherm.en-US
dc.descriptionEn este estudio, se describe la adsorción de plomo (Pb2+) en soluciones acuosas, a partir de carbón modificado, mediante tratamiento con CS2 y NaOH, empleando una relación 16,6:1 NaOH/Carbón p/p y 4,08:1 CS2/carbón p/p. Se realizaron pruebas de pH, cinéticas e isotermas de adsorción, para evaluar la capacidad de adsorción del carbón xantado y carbón no xantado. Los grupos azufre en el carbón xantado fueron identificados por espectroscopia infrarroja de reflectancia difusa (FTIR) y comparados con los espectros del carbón no xantado. Los resultados muestran que la mejor remoción de plomo en la solución con una concentración de 100mg de Pb2+/L y dosis de 50mg de adsorbente/10mL, respectivamente, fue a un valor de pH 5,0, logrando un porcentaje de adsorción de 98%. Los estudios cinéticos indican que el proceso de adsorción puede alcanzar el equilibrio alrededor de 120min, siguiendo una cinética de pseudo-segundo orden, para ambos materiales. El estudio de las isotermas indica que el carbón se ajusta mejor a una isoterma de tipo Langmuir y cuando se somete a la xantación, se ajusta a una isoterma de tipo Freundlich.es-ES
dc.formatapplication/pdf
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dc.languagespa
dc.publisherUniversidad de Ciencias Aplicadas y Ambientales U.D.C.Aes-ES
dc.relationhttps://revistas.udca.edu.co/index.php/ruadc/article/view/399/340
dc.relationhttps://revistas.udca.edu.co/index.php/ruadc/article/view/399/1496
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dc.sourceRevista U.D.C.A Actualidad & Divulgación Científica; Vol. 20 No. 2 (2017): Revista U.D.C.A Actualidad & Divulgación Científica. Julio-Diciembre; 425-433en-US
dc.sourceRevista U.D.C.A Actualidad & Divulgación Científica; Vol. 20 Núm. 2 (2017): Revista U.D.C.A Actualidad & Divulgación Científica. Julio-Diciembre; 425-433es-ES
dc.sourceRevista U.D.C.A Actualidad & Divulgación Científica; v. 20 n. 2 (2017): Revista U.D.C.A Actualidad & Divulgación Científica. Julio-Diciembre; 425-433pt-BR
dc.source2619-2551
dc.source0123-4226
dc.source10.31910/rudca.v20.n2.2017
dc.subjectCarbónes-ES
dc.subjectisoterma Langmuires-ES
dc.subjectxantatoses-ES
dc.subjectefluentes industrialees-ES
dc.subjectCoalen-US
dc.subjectLangmuir isothermen-US
dc.subjectxanthatesen-US
dc.subjectindustrial effluentsen-US
dc.titleAdsorption capacity of lead with cationics exchangers of xanted coalen-US
dc.titleCapacidad de adsorción de plomo con intercambiadores catiónicos de carbón xantadoes-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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