Petroleum resins adsorption onto quartz sand: near infrared (NIR) spectroscopy study.
J Colloid Interface Sci
; 318(2): 167-74, 2008 Feb 15.
Article
em En
| MEDLINE
| ID: mdl-18061604
ABSTRACT
In this paper we have tried to evaluate adsorption parameters of petroleum resins. Near infrared (NIR) spectroscopy is applied for resins bulk concentration evaluation during adsorption process. NIR experimental scheme and parameters are provided. NIR spectra range of 9000-13,000 cm(-1) is chosen. Quartz sand (0.2-0.8 mm fraction) is used as adsorbent; benzene is used as solvent. Different approaches of "NIR spectra-resins concentration" calibration model building are discussed. Partial least squares (PLS) regression method is used. Langmuir model is chosen for experimental data fitting. Combined usage of kinetic and isothermic data gives us ability to evaluate the maximal adsorbed mass density, the equilibrium constant of adsorption, and the rate constants of adsorption (and desorption). The rate constants of resins adsorption and desorption are found to be concentration independent.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Quartzo
/
Resinas Sintéticas
/
Petróleo
/
Espectroscopia de Luz Próxima ao Infravermelho
Tipo de estudo:
Prognostic_studies
Idioma:
En
Ano de publicação:
2008
Tipo de documento:
Article