Med Ali Maatoug

This work presents an experimental validation of MD unit coupled with a sweeping gas membrane (SGMD) using solar energy experimental validation of a sweeping gas membrane distillation (SGMD) unit coupled with solar energy. This station is installed at the University of Kairouan in Tunisia. SGMD is the least used membrane distillation (MD) configuration, and it is very expensive to build. SGMD is used to completely remove solutions containing non-volatile compounds such as salts and recover only high-purity water. A theoretical and experimental study was carried out with the parameters that intervene in the system. The theory of the system is described by a mathematical model based on the heat and mass transfer of the MD unit. Experimental studies were carried out for two types of processes: with preheating and without preheating of the charge (brine). With a low gas flow, the evaporation capacity varies between 0.15 and 0.25 l/m2 h. The operating parameter (liquid velocity) is affec...

ABSTRACT In this paper, the finite difference method is employed to solve Kadomtsev–Petviashvili– Benjamin–Bona–Mahony II (KP–BBM-II) partial differential equations. The time and space variable are discretized by the Crank–Nicholson method and the central-difference scheme, respectively. The consistence and stability are also proved. Some examples are investigated to verify the efficiency of the present method.

The supply of drinking water is a growing problem especially for developing countries because of the industrial development, intensified agriculture, improvement of standard of life and increase of the world population. For this reason, purification of water supplies is extremely important. Solar stills are used for solar distillation plants due to its simplicity in construction and operation, low cost and however the yield is low. Because of its low productivity it is not popularly used. A lot of research work is undertaken to improve the productivity of the still. This paper presents the new design of solar distillation system coupled to a condenser, solar air and water collector and packed bed. This new concept of distiller solar still using humidification- dehumidification processes which is exploited for the desalination purpose. The experiment is carried out during the summer climatic conditions of Tunisia. The productivity in a solar still mainly depends on the temperature di...

The supply of drinking water is a growing problem especially for developing countries because of the industrial development, intensified agriculture, improvement of standard of life and increase of the world population. For this reason, purification of water supplies is extremely important. Solar stills are used for solar distillation plants due to its simplicity in construction and operation, low cost and however the yield is low. Because of its low productivity it is not popularly used. A lot of research work is undertaken to improve the productivity of the still. This paper presents the new design of solar distillation system coupled to a condenser, solar air and water collector and packed bed. This new concept of distiller solar still using humidification- dehumidification processes which is exploited for the desalination purpose. The experiment is carried out during the summer climatic conditions of Tunisia. The productivity in a solar still mainly depends on the temperature di...

The supply of drinking water is a growing problem especially for developing countries because of the industrial development, intensified agriculture, improvement of standard of life and increase of the world population. For this reason, purification of water supplies is extremely important. Solar stills are used for solar distillation plants due to its simplicity in construction and operation, low cost and however the yield is low. Because of its low productivity it is not popularly used. A lot of research work is undertaken to improve the productivity of the still. This paper presents the new design of solar distillation system coupled to a condenser, solar air and water collector and packed bed. This new concept of distiller solar still using humidification- dehumidification processes which is exploited for the desalination purpose. The experiment is carried out during the summer climatic conditions of Tunisia. The productivity in a solar still mainly depends on the temperature di...