| Titre : | Water sorption isotherms of NPK 10−20−20/4 muriate of potash fertilizer (2010) |
| Auteurs : | Barreiro, José A., Auteur ; Andreina Minichini, Jr., Auteur ; Sandoval, Aleida J., Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 2, Janvier 2010) |
| Article en page(s) : | pp 887–892 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | Water Isotherms Potash Fertilizer. |
| Résumé : | Water sorption isotherms of NPK 10−20−20/4 muriate of potash (MOP) fertilizer were determined using a gravimetric method for temperatures ranging from 15 to 35 °C. It was found that the sorption behavior of the fertilizer assimilated to a type-III isotherm characteristic of crystalline solids. The sorption data could be represented by a single isotherm in the temperature range studied. The equilibrium data obtained were fitted to two-parameter linearized and nonlinear three- and four-parameter models. Among the models studied, the nonlinear three-parameter Guggenheim−Anderson−De Boer (GAB) model was selected. This equation allowed the calculation of a monolayer water content of 0.852 g of water/100 g of dry solids, and monolayer and multilayer water sorption enthalpy values of HN = 43.3 kJ/gmol and HM = 44.2 kJ/gmol, respectively. |
| DEWEY : | 660 |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie900533q |
