Abdelmalek Hasseine

Université de Biskra

Wet granulation is used in many industrial fields, such as pharmaceutical and nutraceutical, to improve compressibility properties of powders. The comprehension of the physical phenomena of the granulation process, such as simultaneous particle breakage, aggregation, and nucleation, is fundamental to optimize the operating conditions. In this work...

Two different approaches for a two dimensional population balance modeling strategy are used and compared in this work to describe the flocculation of PCC particles induced by polyelectrolytes, the fixed pivot technique model and the model proposed by Hounslow (1988) and Spicer and Pratsinis (1996b). The median size diameter of the flocs, obtained...

This work extended the dual quadrature method of generalized moments (DuQMoGeM) to solve the population balance model for the hydrodynamics of liquid-liquid extraction columns using a multi-compartment model that represents batch and continuous well-mixed extraction vessels as particular cases. This model can either represent the actual sections of...

Le précipitation et le dépôt d’asphaltène ont des effets indésirables sur l’industrie pétrolière en augmentant les coûts opérationnels en raison de la réduction de la productivité des puits et de l’empoisonnement des catalyseurs. La distribution granulométrique est un facteur important qui détermine dans quelle mesure l'instabilité de l'asphaltène...

The plenary entitled Dynamique des Aerosols Coagulation et Condensation /Évaporation

This paper describes our interest in ethanol separation and the enhancement of the obtained interaction parameters. The binodal curves and tie-line data for the ternary systems of water + ethanol + 1-octanol, water + ethanol + 4-methyl-2-pentanone, and water + ethanol + ethyl acetate were investigated at 293.15 K. All these three ternary systems fo...

The adsorption capacity of date palm trunk fiber (DPTF) as an economic agricultural waste adsorbent was studied for the removal of cadmium from wastewater using a fixed-bed column. The DPTF has been used directly as an adsorbent and only subjected to washing, drying and sieving, without any further preparation steps. Breakthrough curves were obtain...

The adsorption capacity of date palm trunk fiber (DPTF) as an economic agricultural waste adsorbent was studied for the removal of cadmium from wastewater using a fixed-bed column. The DPTF has been used directly as an adsorbent and only subjected to washing, drying and sieving, without any further preparation steps. Breakthrough curves were obtain...

Objective In this work, we obtained the analytical and approximate solutions of the population balance equations (PBEs) involving the breakup process in batch and continuous flow by applying the Adomian decomposition method and piecewise continuous basis functions, respectively. Methods The key to the advanced numerical method is to represent the...

Liquid-liquid equilibrium (LLE) problems such as: phase stability analysis, phase equilibrium calculations, chemical equilibrium calculations, binary interaction parameter identification of thermodynamic models and other problems of fluid characterization have been the core subject of many recent studies. This study introduces Cuckoo Search (CS), F...

The effect of NaCl on the LLE data for the ternary system, water + 1-propanol + hexane, were determined at 298 K under atmospheric pressure. The curve of solubility and tie-line data of this system were determined by experimental analysis. The experimental results showed that addition of NaCl significantly affected the two-phase region of ternary s...

The liquid-vapor equilibrium calculation and interaction parameter identification problems in thermodynamic models are considered one of the most important applications of thermodynamic in chemical and process engineering because these models form the basis for synthesis, design, optimization and control of process systems. Recently, these problems...

The study of liquid-liquid equilibrium of food-Related thermodynamic systems is very important for separations process such as: distillation and solvent extraction. The investigations on these types of mixtures have been the subject of much interest in recent years. In this work, the liquid–liquid equilibrium of same ternary and quaternary systems...

In this work, two major hydrodynamic parameters: the holdup of the dispersed phase and the Sauter diameter are considered. This is done for describing the hydrodynamics of interacting liquid–liquid dispersions using different particle breakup, coalescence and growth models in a particle population balance model. Based on the semi analytical solutio...

Experimental liquid–liquid equilibrium (LLE) data for the extraction of propionic acid from water by rosmary at 291.15 K and at ambient pressure were investigated. Data for the binodal curve have been determined by cloud-point titration method and conjugate points on tie-line were obtained by correlating the refractive index of the binodal curves a...

The effect of sodium nitrate and sodium sulphate on the distribution of acetone, ethanol, methanol and 2-propanol between toluene, Cyclohexane, xylene and water at 25°C has been experimentally investigated. The McDevit and Long method has been employed to correlate the tie line data. Compared with previous work, the order of decreasing salting out,...

The breakage and aggregation processes in batch systems had attained highly interest in applied mathematics and engineering fields. In this work, we developed analytical solutions of the particle breakage and aggregation using the population balance equation (PBE) in batch flow systems. To allow explicit solutions, we approximated the particle brea...

The population balance equation has numerous applications in physical and engineering sciences, where one of the phases is discrete in nature. Such applications include crystallization, bubble column reactors, bioreactors, microbial cell populations, aerosols, powders, polymers and more. This contribution presents a comprehensive investigation of t...

The adsorption performance of milk thistle seeds (MTS), a low-cost and locally available biomaterial, for methylene blue (MB) removal from aqueous solutions was examined using a batch process. The effects of operational conditions such as initial dye concentration (50–250 mg/L), adsorbent dose (0.1–0.8 g/200mL), temperature (25–45 °C), ionic streng...

This paper presents a numerical analysis on natural thermosolutal convection in a rectangular enclosure filled partially and vertically by a porous layer and subjected to a vertical vibration. The Brinkman–Extended Darcy equation is used for modeling the fluid flow through the porous section in the enclosure. The effect of vertical vibrations on th...

Liquid–liquid equilibrium (LLE) data for water + acetic acid + solvent (dichloromethane + methyl isobutyl ketone) ternary systems are measured experimentally at T = 301.15 K and p = 1 atm. Different proportions of pure solvents dichloromethane (DCM) and methyl isobutyl ketone (MIBK) are inves - tigated. The cloud-point titration technique is empl...

This paper presents a numerical analysis on natural thermosolutal convection in a rectangular enclosure filled partially and vertically by a porous layer and subjected to a vertical vibration. The Brinkman–Extended Darcy equation is used for modeling the fluid flow through the porous section in the enclosure. The effect of vertical vibrations on th...

We present a continuous approximation to the population balance equation which has few analytical solutions that are only of academic interest. The proposed solution is a stable and well-conditioned converging sequence of continuous approximations to the number concentration function. Instead of using the moments of the number concentration functio...

Bubbly gas flow in vertical tubes received considerable attention due to its applications in chemical, biochemical industries and nuclear reactor design and safety consideration. The use of CFD is called for to avoid the dependence of steady state operation and accident analysis on empirical correlations. This is due to the dependence of these corr...

We present a new steady state algorithm for modeling the hydrodynamics and mass transfer behavior of liquid extraction columns based on the SQMOM in a one dimensional domain. The SQMOM is extended to solve the spatially distributed bivariate population balance equation (w.r.t. droplet diameter and the solute concentration) at steady state. The inte...

In this work, the Sectional Quadrature Method Of Moments (SQMOM) is extended to solve the nonhomogeneous population balance equation along the spatial domain to model the hydrodynamics and mass transfer behaviour of liquid-liquid extraction columns. The required quadrature nodes and weights are calculated analytically using the Two-Equal Weight Qua...

The breakage and aggregation processes in batch systems had attained highly interest in applied mathematics and engineering fields. In this work, we developed analytical solutions of the particle breakage and aggregation using the population balance equation (PBE) in batch flow systems. To allow explicit solutions, we approximated the particle brea...

In this paper, the liquid–liquid equilibrium of twenty two ternary and quaternary systems relevant for food industry was modeled using the NRTL and UNIQUAC equations and the Flower Pollination Algorithm (FPA). FPA is an emerging natureinspired stochastic global optimization method and it has been used for LLE parameter identification of local compo...

Liquid-Liquid Equilibrium (LLE) data for the {water + formic acid + solvent (butyl acetate, ethyl acetate and isoamyl alcohol)} ternary systems have been determined experimentally at 291.15 K and 1 atm. Solubility data were obtained using the cloud-point titration method. Refractive index measurement was employed to determine the concentration of a...

In this work, the number density function in the population balance equation (PBE) is approximated in terms of field nodes through a complete set of orthogonal basis functions in a semi-logarithmic space. We proposed the functional values at these field nodes to satisfy the maximum entropy solution. This hybridization of function approximation and...

One of the most physical and reactive separation processes, which can be carried out under mild operation process conditions, is the liquid-liquid extraction process. This process uses numerous types of equipment which can be broadly classified into two main categories: Agitated and non-agitated columns. Non-agitated columns have many advantages wh...

Liquid–liquid equilibrium (LLE) data for the quaternary systems (water + ethanol + dichloromethane (DCM) or chloroform (CHCl3) + diethyl ether (DEE)) were experimentally investigated at 293.15 K. The thermodynamic consistency of the data was performed using the Othmer–Tobias and Hand plots. The experimental tie-line data were correlated using the n...

The population balance equation (PBE) has been used to model variety of particulate systems. However, few cases of analytical solutions for the breakage process exist, where most of these solutions are for the batch stirred vessel. The analytical solutions of the PBE for particulate processes under the influence of particle breakage in batch and co...

The dynamic behavior of particulate processes under the influence of the nonlinear aggregation term, nucleation, growth and breakup is studied. Analytic solutions are obtained from the integro-differential population balance equation governing the particle size distribution density function for special cases by the Adomian decomposition method (ADM...

The breakage in batch and continuous systems has attained high interest in chemical engineering and granulation from a process and from a product quality perspective. The wet granule breakage process in a high shear mixer will influence and may control the final granule size distribution. In this work, we developed analytical solutions of the parti...

The milk thistle seeds were tested as a possible adsorbent for the removal of methylene blue (MB) from aqueous solutions in the absence and presence of ultrasound. Batch adsorption studies were conducted to study the effects of different parameters such as adsorbent dose, initial dye concentration and ultrasonic power on MB dye adsorption. The simu...

The causes of poor air quality in most cities around the world are caused by human activities. The urban population tends to increase sharply with increasing standard of living of many people in the world has allowed many social strata access to the purchase of vehicles which generates maddening amounts of substances emitted to the atmosphere harmf...

The date palm trees cultivation in Algeria has a significant impact on the socio-economic development in agriculture especially in the Saharan regions. Indeed, the palm provides a regular income for date palm farmer and represents for the country a second source of foreign currency revenue. In addition it represents the main source of living in the...

The interaction parameter estimation problem in thermodynamic models is an important requirement and a common task in many areas of chemical engineering because these models form the basis for synthesis, design, optimization and control of process systems. Recently, this problem has been solved using minimization of Gibbs free energy, using global...

La culture du palmier dattier constitue sans aucun doute une participation importante sur le plan socio-économique dans l’agriculture saharienne surtout dans la wilaya de Biskra. En effet, le palmier procure, grâce à la commercialisation aux échelles nationale et internationale de son fruit, un revenu régulier pour les phoeniciculteurs et constitue...

The droplet population balance equations (PBEs), which despite its importance rarely has an analytical solution. However, few cases with assumed functional forms of breakup rate, daughter droplet distribution exist, where most of these solutions are for the batch stirred vessel. A new framework for solving (PBEs) for batch and continuous systems is...

Experimental liquid-liquid equilibrium (LLE) data for the extraction of methanol, ethanol and 1-propanol from water by diethyl ether and dichloromethane at 293.15K and at ambient pressure were investigated. Data for the binodal curves have been determined by cloud-point titration method and conjugate points on tie-line were obtained by correlating...

Liquid–liquid equilibrium (LLE) data of ternary system (n-heptane+toluene+aniline) at 20°C is experimentally investigated in the present work. The reliability of this data was ascertained from Othmer–Tobias plots. For the simulation procedure, we have utilized the NRTL and UNIQUAC activity coefficient models for the prediction of the liquid–liquid...

liquid–liquid equilibrium (LLE) data of ternary system (n-heptane + toluene + aniline) at 20 ◦ C is experimentally investigated in the present work. The reliability of this data was ascertained from Othmer–Tobias plots. For the simulation procedure, we have utilized the NRTL and UNIQUAC activity coefficient models for the prediction of the liquid–l...

Salting effect of NaCl and KCl on the liquid-liquid equilibria (LLE) of water-ethyl acetate-ethanol system was investigated experimentally at 293.15 K and 1 atm. The salt mass percentages considered were 5 and 10%. The results show that the two electrolytes significantly affected the solubility of the solute in the organic phase, since its distribu...

A method based on a genetic algorithm (GA) combined with Levenberg-Marquardt (LM) method applicable to the population balance model for coalescence parameter estimation in a liquid-liquid biphasic system is presented. The toluene/water system in a rotating disk contactor was taken as an example. Estimation methods for such a problem are often based...

Liquid-liquid equilibrium (LLE) measurements of the solubility (binodal) curves and tie-line end compositions were carried out for the ternary systems (water + acetic acid + dichloromethane), (water + acetic acid + methyl isobutyl ketone), (water+ lactic acid + methyl isobutyl ketone) at T= 294.15K and atmospheric pressure. The reliability of the e...

Liquid-liquid extraction columns are a quite good illustration of a two-phase flow system. They are used for contacting two immiscible liquid phases, flowing co or counter currently, and are simply vertical tubes having often, at their base, a distributor which can be a perforated plate or a series of nozzles, enabling the dispersion of one phase (...

The effect of single salts sodium and potassium chlorides on the distribution of the solute components acetone, 2-propanol and methanol between the two coexisting and equilibrated liquid phases of the solvent components (water + toluene), (water + cyclohexane) and (water + xylene), respectively, are experimentally investigated in the present work....

The population balance model is a useful tool for the design and prediction of a range of processes that involve dispersed phases and particulates. The inverse problem method for the droplet population balance model is applied to estimate coalescences parameters for two-phase liquid-liquid systems. This is undertaken for two systems, namely toluene...

This work is a model assessment study considering two major hydrodynamic parameters: the holdup of the dispersed phase and the Sauter diameter. This is done for two different types of extraction columns, namely, the rotating disc contactor (RDC) and the Kühni column, using different drop breakup and coalescence models in a droplet population balanc...

In the present paper, we studied the stationary and dynamic characteristics of a thermocouple (Cu-Constantan) [1, 2, 3] in the case of natural convection of air or liquid nitrogen. The outcome of this work was to highlight two thermoelectric effects: the Seebeck and Peltier effects. We find that the majority of the theoretical characteristics of th...