| Journal: | Brazilian journal of chemical engineering |
| Database: | PERIÓDICA |
| System number: | 000308786 |
| ISSN: | 0104-6632 |
| Authors: | Pereira, L.M1 Souza, R. De2 Orlande, H.R.B Cotta, R.M |
| Institutions: | 1Universidade do Vale do Paraiba, Sao Jose dos Campos, Sao Paulo. Brasil 2Universidade Federal do Rio de Janeiro, Instituto Alberto Luiz Coimbra de Pos-Graduacao e Pesquisa de Engenharia, Rio de Janeiro. Brasil |
| Year: | 2001 |
| Season: | Sep |
| Volumen: | 18 |
| Number: | 3 |
| Pages: | 253-265 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | In this article we compare two different techniques to measure the concentration of saline solutions for the identification of the apparent mass diffusion coefficient in soils saturated with distilled water. They are the radiation measurement technique and the electrical conductivity measurement technique. These techniques are compared in terms of measured quantities, sensitivity coefficients with respect to unknown parameters and the determinant of the information matrix. The apparent mass diffusion coefficient is estimated by utilizing simulated measurements containing random errors. The Levenberg-Marquardt method of minimization of the least-squares norm is used as the parameter estimation procedure. The effects of the volume of saline solution injected into the column devised for the experiments on the accuracy of the estimated parameters are also addressed in this article |
| Disciplines: | Química |
| Keyword: | Ingeniería química, Coeficiente de difusión de masa, Medición de la radiación, Conductividad eléctrica |
| Keyword: | Chemistry, Chemical engineering, Mass diffusion coeficient, Radiation measurement, Electrical conductivity |
| Full text: | Texto completo (Ver HTML) |
