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Water sorption isotherms of NPK 10−20−20/4 muriate of potash fertilizer / Barreiro, José A. in Industrial & engineering chemistry research, Vol. 49 N° 2 (Janvier 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 887–892 Titre : Water sorption isotherms of NPK 10−20−20/4 muriate of potash fertilizer Type de document : texte imprimé Auteurs : Barreiro, José A., Auteur ; Andreina Minichini, Jr., Auteur ; Sandoval, Aleida J., Auteur Année de publication : 2010 Article en page(s) : pp 887–892 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : 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 [article] Water sorption isotherms of NPK 10−20−20/4 muriate of potash fertilizer [texte imprimé] / Barreiro, José A., Auteur ; Andreina Minichini, Jr., Auteur ; Sandoval, Aleida J., Auteur . - 2010 . - pp 887–892. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 2 (Janvier 2010) . - pp 887–892 Mots-clés : 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