Parameters estimation for amino acids adsorption in a fixed bed by moment analysis



Título del documento: Parameters estimation for amino acids adsorption in a fixed bed by moment analysis
Revue: Brazilian journal of chemical engineering
Base de datos: PERIÓDICA
Número de sistema: 000308787
ISSN: 0104-6632
Autores: 1
2

Instituciones: 1Universidade Estadual de Campinas, Faculdade de Engenharia Quimica, Campinas, Sao Paulo. Brasil
2Purdue University, Chemical Engineering Department, West Lafayette, Indiana. Estados Unidos de América
Año:
Periodo: Jun
Volumen: 18
Número: 2
Paginación: 181-194
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés Equilibrium constant and mass transfer parameters are needed for the study of amino acid separation in any process involving adsorption in fixed beds. The adsorption constants, effective diffusion coefficients, and axial dispersion coefficients for two amino acids, L-phenylalanine (Phe) and L-tyrosine (Tyr), are determined from a series of pulse tests in a fixed bed packed with PVP (poly-4-vinylpyridine) resin. Total bed voidage at different flow rates is estimated from NaCl pulse test data. The effective pore diffusivities of Phe, Tyr, and NaCl are estimated from moment analysis of pulse data. A detailed rate model is then solved numerically and adsorption constants, effective diffusion coefficients, axial dispersion coefficients are determined by moment analysis and compared with the pulse data. The advantage of this method is that the effective intraparticle diffusivities can be determined without the influence of extracolumn dispersion or intracolumn axial dispersion effects
Disciplinas: Química
Palabras clave: Bioquímica,
Ingeniería química,
Aminoácidos,
Separación,
Constante de equilibrio,
Transferencia de masa,
Adsorción
Keyword: Chemistry,
Biochemistry,
Chemical engineering,
Amino acids,
Separation,
Equilibrium constant,
Mass transference,
Adsorption
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