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Papers by Tijani Bounahmidi

Research paper thumbnail of Investigation of the l-Glutamic acid polymorphism: Comparison between stirred and stagnant conditions

Journal of Crystal Growth, 2016

Research paper thumbnail of Dynamique et contrôle de l'installation de l'acidification des eaux d'extraction de sucre à partir de la betterave

Industries Alimentaires Et Agricoles, 2006

Research paper thumbnail of Modeling and simulation of phosphoric acid concentration process

Research paper thumbnail of Measurement and modeling of atmospheric pressure vapor-liquid equilibrium data for binary, ternay and quaternary mixtures of sucrose, glucose, fructose and water components

Fluid Phase Equilibria, 1994

ABSTRACT

Research paper thumbnail of Study of a Melt Crystallization Process for Seawater Desalination

Journal of Mechanics Engineering and Automation, 2015

Research paper thumbnail of Evaluation of the energy consumption of industrial hybrid seawater desalination process combining freezing system and reverse osmosis

Desalination and Water Treatment, 2014

Research paper thumbnail of STEADY STATE SIMULATION OF PHOSPHORIC ACID CONCENTRATION PROCESS

Separation Science and Technology, 2002

Research paper thumbnail of Estimation of sucrose crystallization kinetics from batch crystallizer data

Journal of Crystal Growth, 2008

ABSTRACT

Research paper thumbnail of Modeling of sucrose crystallization kinetics: The influence of glucose and fructose

Journal of Crystal Growth, 2008

ABSTRACT

Research paper thumbnail of Modeling of excess properties and vapor–liquid equilibrium of the system H3PO4–H2O

Fluid Phase Equilibria, 2005

... Thus, it appears from what precedes that the approaches employed in the previous works concer... more ... Thus, it appears from what precedes that the approaches employed in the previous works concerning the system H 3 PO 4 –H 2 O at 298.15 K and at 324.15 K in the case of the Christensen and Thomsen work, are unable to describe its thermodynamic properties neither for ...

Research paper thumbnail of On the modeling of calcium sulfate solubility in aqueous solutions

Fluid Phase Equilibria, 2006

Research paper thumbnail of Liquid–liquid equilibria in the system H3PO4–KCl–H2O–tri-n-butyl phosphate: experiments and modelling

Fluid Phase Equilibria, 2004

The liquid-liquid equilibria of the system H 3 PO 4 -KCl-H 2 O-TBP was studied experimentally in ... more The liquid-liquid equilibria of the system H 3 PO 4 -KCl-H 2 O-TBP was studied experimentally in the concentration range 0-6 mol/kg. The obtained data were modelled using the Pitzer equation for the aqueous phase and the Sergievskii-Dannus relationship for the organic phase. A fairly good agreement was observed between the model and the experimental data. (K. Ziat). the following species: TBP, TBP-H 2 O, H 3 PO 4 -TBP and (TBP) 2 -H 3 PO 4 -H 2 O. This system was studied using the Sergievskii-Dannus and Pitzer's equations to describe the extraction system H 3 PO 4 -H 2 O-TBP.

Research paper thumbnail of Modelling of the ternary system H3PO4/H2O/TBP

Fluid Phase Equilibria, 2002

A thermodynamic model is presented for the extraction of phosphoric acid from water by tri-n-buty... more A thermodynamic model is presented for the extraction of phosphoric acid from water by tri-n-butylphosphate (TBP), from aqueous solutions containing 0-6 mol/kg phosphoric acid. The activity coefficient of phosphoric acid was calculated from experimental data using Pitzer's equation, and those of the components in the organic phase were calculated by Sergievskii-Danus's relationship. The proposed model gives a satisfactory description of the distribution of phosphoric acid and water, in the considered concentration range, by taking into account the formation of the following species: TBP, TBP·H 2 O, H 3 PO 4 ·TBP and (TBP) 2 ·H 3 PO 4 ·H 2 O.

Research paper thumbnail of Measurement and estimation of vapor–liquid equilibrium for industrial sugar juice using the Peng–Robinson equation of state

Fluid Phase Equilibria, 1999

... equation of state obtained was successfully used to estimate the boiling temperatures of indu... more ... equation of state obtained was successfully used to estimate the boiling temperatures of industrial beet and cane sugar juices ... The simplest techniques consist of statistical models relating the solution boiling point, or boiling point elevation, to the soluble solids concentration [1 ...

Research paper thumbnail of Freezing desalination of sea water in a static layer crystallizer

Desalination and Water Treatment, 2010

This work aims in developing a static layer crystallizer for freezing desalination of sea water. ... more This work aims in developing a static layer crystallizer for freezing desalination of sea water. The experiments were performed with a simple system of H2O-NaCl and with samples of sea water from Rabat. The pilot crystallizer consists in a tube cooled bymeans of a thermostatic bath. The tube is immerged in a cylindrical double jacketed tank cooled by means of

Research paper thumbnail of Parametric study of the sweating step in the seawater desalination process by indirect freezing

Desalination, 2011

In the process of desalination by indirect freezing, ice formed on the cooled surface contains im... more In the process of desalination by indirect freezing, ice formed on the cooled surface contains impurities due to kinetic effects. Sweating is an efficient method by which ice layer is purified under the effect of temperature gradient. The main kinetic parameters influencing sweating of ice are initial concentration of ice, sweating temperature and sweating time. In the present work, the

Research paper thumbnail of Étude expérimentale et modélisation de la cinétique de combustion du coke

Comptes Rendus Chimie, 2004

Résumé L'étude de la cinétique de combustion du coke a été réalisée, à l'aide de la technique d'a... more Résumé L'étude de la cinétique de combustion du coke a été réalisée, à l'aide de la technique d'analyse thermogravimétrique isotherme (ATG), dans l'intervalle de température 550-1100°C. Les résultats obtenus montrent que la réaction se déroule en régime contrôlé par la cinétique chimique dans l'intervalle de température 550-750°C, alors que, dans le domaine de température compris entre 800 et 1100°C, elle est influencée par les phénomènes de transfert. Dans l'intervalle de température 550-750°C, les données expérimentales ont été décrites d'une manière satisfaisante à l'aide du modèle à coeur rétrécissant en régime contrôlé par la cinétique chimique et d'un modèle empirique. Ce dernier a permis aussi un ajustement très précis des résultats expérimentaux relatifs à l'intervalle de température compris entre 800 et 1100°C. L'énergie d'activation et l'ordre de réaction par rapport à l'oxygène de la cinétique intrinsèque, ajustés pour ces deux modèles ne sont pas significativement différents: ils sont respectivement de 113,53 kJ mol -1 et 0,8 pour le modèle à coeur rétrécissant et de 113,94 kJ mol -1 et 0,62 pour le modèle empirique. Pour citer cet article : S. Slaoui, T. Bounahmidi, C. R. Chimie 7 (2004). © 2004 Académie des sciences. Publié par Elsevier SAS. Tous droits réservés.

Research paper thumbnail of A modified electrolyte-Uniquac model for computing the activity coefficient and phase diagrams of electrolytes systems

Research paper thumbnail of Sea water desalination by dynamic layer melt crystallization: Parametric study of the freezing and sweating steps

Journal of Crystal Growth, 2012

This work aims at developing a dynamic layer crystallizer operated batchwise, for freezing desali... more This work aims at developing a dynamic layer crystallizer operated batchwise, for freezing desalination of sea water. The experiments were performed with water/NaCl solutions and with samples of sea water from Nice, Rabat and Marseille. The pilot crystallizer consists of a cooled tube immersed in a cylindrical double jacketed tank. The solution is poured into the tank and the crystallization

Research paper thumbnail of Investigation of the l-Glutamic acid polymorphism: Comparison between stirred and stagnant conditions

Journal of Crystal Growth, 2016

Research paper thumbnail of Dynamique et contrôle de l'installation de l'acidification des eaux d'extraction de sucre à partir de la betterave

Industries Alimentaires Et Agricoles, 2006

Research paper thumbnail of Modeling and simulation of phosphoric acid concentration process

Research paper thumbnail of Measurement and modeling of atmospheric pressure vapor-liquid equilibrium data for binary, ternay and quaternary mixtures of sucrose, glucose, fructose and water components

Fluid Phase Equilibria, 1994

ABSTRACT

Research paper thumbnail of Study of a Melt Crystallization Process for Seawater Desalination

Journal of Mechanics Engineering and Automation, 2015

Research paper thumbnail of Evaluation of the energy consumption of industrial hybrid seawater desalination process combining freezing system and reverse osmosis

Desalination and Water Treatment, 2014

Research paper thumbnail of STEADY STATE SIMULATION OF PHOSPHORIC ACID CONCENTRATION PROCESS

Separation Science and Technology, 2002

Research paper thumbnail of Estimation of sucrose crystallization kinetics from batch crystallizer data

Journal of Crystal Growth, 2008

ABSTRACT

Research paper thumbnail of Modeling of sucrose crystallization kinetics: The influence of glucose and fructose

Journal of Crystal Growth, 2008

ABSTRACT

Research paper thumbnail of Modeling of excess properties and vapor–liquid equilibrium of the system H3PO4–H2O

Fluid Phase Equilibria, 2005

... Thus, it appears from what precedes that the approaches employed in the previous works concer... more ... Thus, it appears from what precedes that the approaches employed in the previous works concerning the system H 3 PO 4 –H 2 O at 298.15 K and at 324.15 K in the case of the Christensen and Thomsen work, are unable to describe its thermodynamic properties neither for ...

Research paper thumbnail of On the modeling of calcium sulfate solubility in aqueous solutions

Fluid Phase Equilibria, 2006

Research paper thumbnail of Liquid–liquid equilibria in the system H3PO4–KCl–H2O–tri-n-butyl phosphate: experiments and modelling

Fluid Phase Equilibria, 2004

The liquid-liquid equilibria of the system H 3 PO 4 -KCl-H 2 O-TBP was studied experimentally in ... more The liquid-liquid equilibria of the system H 3 PO 4 -KCl-H 2 O-TBP was studied experimentally in the concentration range 0-6 mol/kg. The obtained data were modelled using the Pitzer equation for the aqueous phase and the Sergievskii-Dannus relationship for the organic phase. A fairly good agreement was observed between the model and the experimental data. (K. Ziat). the following species: TBP, TBP-H 2 O, H 3 PO 4 -TBP and (TBP) 2 -H 3 PO 4 -H 2 O. This system was studied using the Sergievskii-Dannus and Pitzer's equations to describe the extraction system H 3 PO 4 -H 2 O-TBP.

Research paper thumbnail of Modelling of the ternary system H3PO4/H2O/TBP

Fluid Phase Equilibria, 2002

A thermodynamic model is presented for the extraction of phosphoric acid from water by tri-n-buty... more A thermodynamic model is presented for the extraction of phosphoric acid from water by tri-n-butylphosphate (TBP), from aqueous solutions containing 0-6 mol/kg phosphoric acid. The activity coefficient of phosphoric acid was calculated from experimental data using Pitzer's equation, and those of the components in the organic phase were calculated by Sergievskii-Danus's relationship. The proposed model gives a satisfactory description of the distribution of phosphoric acid and water, in the considered concentration range, by taking into account the formation of the following species: TBP, TBP·H 2 O, H 3 PO 4 ·TBP and (TBP) 2 ·H 3 PO 4 ·H 2 O.

Research paper thumbnail of Measurement and estimation of vapor–liquid equilibrium for industrial sugar juice using the Peng–Robinson equation of state

Fluid Phase Equilibria, 1999

... equation of state obtained was successfully used to estimate the boiling temperatures of indu... more ... equation of state obtained was successfully used to estimate the boiling temperatures of industrial beet and cane sugar juices ... The simplest techniques consist of statistical models relating the solution boiling point, or boiling point elevation, to the soluble solids concentration [1 ...

Research paper thumbnail of Freezing desalination of sea water in a static layer crystallizer

Desalination and Water Treatment, 2010

This work aims in developing a static layer crystallizer for freezing desalination of sea water. ... more This work aims in developing a static layer crystallizer for freezing desalination of sea water. The experiments were performed with a simple system of H2O-NaCl and with samples of sea water from Rabat. The pilot crystallizer consists in a tube cooled bymeans of a thermostatic bath. The tube is immerged in a cylindrical double jacketed tank cooled by means of

Research paper thumbnail of Parametric study of the sweating step in the seawater desalination process by indirect freezing

Desalination, 2011

In the process of desalination by indirect freezing, ice formed on the cooled surface contains im... more In the process of desalination by indirect freezing, ice formed on the cooled surface contains impurities due to kinetic effects. Sweating is an efficient method by which ice layer is purified under the effect of temperature gradient. The main kinetic parameters influencing sweating of ice are initial concentration of ice, sweating temperature and sweating time. In the present work, the

Research paper thumbnail of Étude expérimentale et modélisation de la cinétique de combustion du coke

Comptes Rendus Chimie, 2004

Résumé L'étude de la cinétique de combustion du coke a été réalisée, à l'aide de la technique d'a... more Résumé L'étude de la cinétique de combustion du coke a été réalisée, à l'aide de la technique d'analyse thermogravimétrique isotherme (ATG), dans l'intervalle de température 550-1100°C. Les résultats obtenus montrent que la réaction se déroule en régime contrôlé par la cinétique chimique dans l'intervalle de température 550-750°C, alors que, dans le domaine de température compris entre 800 et 1100°C, elle est influencée par les phénomènes de transfert. Dans l'intervalle de température 550-750°C, les données expérimentales ont été décrites d'une manière satisfaisante à l'aide du modèle à coeur rétrécissant en régime contrôlé par la cinétique chimique et d'un modèle empirique. Ce dernier a permis aussi un ajustement très précis des résultats expérimentaux relatifs à l'intervalle de température compris entre 800 et 1100°C. L'énergie d'activation et l'ordre de réaction par rapport à l'oxygène de la cinétique intrinsèque, ajustés pour ces deux modèles ne sont pas significativement différents: ils sont respectivement de 113,53 kJ mol -1 et 0,8 pour le modèle à coeur rétrécissant et de 113,94 kJ mol -1 et 0,62 pour le modèle empirique. Pour citer cet article : S. Slaoui, T. Bounahmidi, C. R. Chimie 7 (2004). © 2004 Académie des sciences. Publié par Elsevier SAS. Tous droits réservés.

Research paper thumbnail of A modified electrolyte-Uniquac model for computing the activity coefficient and phase diagrams of electrolytes systems

Research paper thumbnail of Sea water desalination by dynamic layer melt crystallization: Parametric study of the freezing and sweating steps

Journal of Crystal Growth, 2012

This work aims at developing a dynamic layer crystallizer operated batchwise, for freezing desali... more This work aims at developing a dynamic layer crystallizer operated batchwise, for freezing desalination of sea water. The experiments were performed with water/NaCl solutions and with samples of sea water from Nice, Rabat and Marseille. The pilot crystallizer consists of a cooled tube immersed in a cylindrical double jacketed tank. The solution is poured into the tank and the crystallization