Producción Científica Profesorado

High Mn2+ uptake by a new polyvinyl alcohol derivative: isotherm model análisis.



González Ramírez, César Abelardo

2015

Rosa Richards, Irais Gómez, Elena Otazo, Francisco Prieto, Juan Hernández, Gladys Linares, César González, Alberto Gordillo & Roberto Villagómez. High Mn2+ uptake by a new polyvinyl alcohol derivative: isotherm model análisis. Separation Science and Technology (Enero, 2015), Vol.50(2):233-244, Factor Impacto en JCR 2013: 1.164. ID: 950278 DOI:10.1080/01496395.2014.950278


Abstract


The transformation of Polyvinyl alcohol (PVA) into poly(vinyl phenylthionecarbamate) (PVA-PT) was upgraded to 35 g with 45% yield and 90% conversion degree. PVA-PT has shown high uptakes (93-96%) towards Mn2+ > Cu2+ > Cd2+ after 4 hours stirring at 20C in a batch procedure, towards 31-1600 mg/L concentration range. The material and its metal ion adducts were characterized by gravimetric analysis, IR, Raman, and SEM/EDS. An experimental design was applied to evaluate the influence of parameters on the Mn2+ removal efficiency by PVA-PT. The best results were achieved after 240 min, at 20C and concentrations higher than 187 mg/L. The 20C sorption isotherms were recorded for the PVA-PT/Mn2+ system at different particle sizes and dosages. The best experimental sorption capacity (qe = 343.76 mg/g) was reached at the lowest dose (0.05 g in 10 mL solution) and the highest concentration (1809.82 mg/L). Data fit Freundlich isotherm model (R2 = 0.9462, KF = 0.8625, N = 0.8271), indicative of a moderate affinity interaction PVA-PT/Mn+2. The kinetic isotherm models demonstrate chemisorption and bulk diffusion-controlled absorption into the material after 7 min.



Producto de Investigación




Artículos relacionados

3D reconstruction of Artificially Structured Microbial Consortia (ASMC) by image analysis

Two-step modeling of the biodegradation of phenol by an acclimated activated sludge

Manganese accumulation in plants of the mining zone of Hidalgo, Mexico

Mathematical modeling of diffusion regulated Quorum sensing in Artificially Structured Microbial Con...

Procedures in Ready Biodegradability Testing: Effects of the Inoculation and the Monitored Parameter

Model-based design of different fedbatch strategies for phenol degradation in acclimatized activated...

MODELACIÓN MATEMÁTICA DE LA CINÉTICA DE CATALIZADORES PARA LA PRODUCCION DE DIESEL DE ULTRA BAJO AZU...

Degradación física del almidón de cebada (Hordeum sativun Jess). Correlación entre la gelatinización...

ANÁLISIS DE LAS ESTRATEGIAS DE CONTROL DE LA SECCIÓN DE DESPROPANIZACIÓN EN LA PLANTA PETROQUÍMICA J...

DISEÑO DE UNA PLANTA DE TRATAMIENTO DE AGUAS RESIDUALES BASADO EN EL PRINCIPIO DE CONSORCIOS MICROBI...