Research Abstracts

The Seawater Desalination by an Autonomous Wind Energy System (SDAWES) project was developed to produce a natural scarce resource (fresh water) by the use of a natural, renewable resource (wind energy). The basic concept consists in the connection of three kinds of desalination systems: reverse osmo

Today more than ever, the protection of health and the respect for the laws of nature are among man’s main preoccupations. One of the main concerns, comes is that of nitrates. However, since about fifteen years in a number of Moroccan regions, as well as in many foreign countries, one sees a continu

Most parts of Morocco are arid where water resources are becoming more and more threatened due to shortage problems. According to the Moroccan Superior Council of Water and Climate (2000), the national strategy for water management policies focuses on three main priorities: (1) continuing water reso

Recently because of increasing of environmental consciousness and demands, several discussions about the preservation of natural resources have led to more efforts concerning materials of good selectivity and high sorption capacity [1]. We have developed new composite materials with improved adsorpt

In industry, when operations of separation, concentration, purification or sterilisation are necessary, membrane processes can be applied. In the food industry, a tangential process is used in many sectors (milk, gelatine, vinegar, juice, wine, etc.). Other fields are also concerned with these proce

We studied the effect of water hardness, temperature and the nature of walls on CaCO3 heterogeneous nucleation, which is the main condition of scale. The probability of CaCO3 heterogeneous precipitation increased for weak water hardness and weak temperatures. The wall nature did not influence the pr

Transport competition between the protons and the alkyl metal cations Li+, Na+, K+ and Cs+ across a cationexchange membrane (CEM), called CMH, was studied in terms of an electrodialysis process with three different configurations: water/water (W/W), solvent/water (S/W) and solvent/solvent (S/S). Und

Water is a natural resource essential for life and for most economic activities developed on earth. Population growth and lack of water in some regions of the world has led humans to design and implement new technologies to use water in an efficient way. Water quality requirements in the industrial

Kindasa Water Services (KWS) currently operates an RO facility at Jeddah Port on the Red Sea in Saudi Arabia, using conventional pre-treatment, to provide a 14 mld output. Due to an increasing requirement for treated water services, a contract has recently been placed with Weir Westgarth for a new d

A mechanical pressure model equations for a double-membrane system, in which a series of two (Ml and Mr) vertically mounted, flat, symmetric, polymer membranes separate three compartments (l, m, r) containing the heterogeneous non-electrolyte solutions of concentrations , and was developed. These co