Research Abstracts

Commercial polymer cation-exchange resins have been investigated for the separation and recovery of Cu(II) and Ag(I) from synthetic solutions. They contain various ionic species after modification of the cation-exchange resin properties by fixation of organic macro-cations under different experiment

In this paper, the effects of tube materials and profiles on the thermal performance of a single-effect evaporator have been investigated. Three different types of tube profiles, such as, single-fluted aluminum tube, smooth Cu–Ni (90–10) tube and corrugated Cu–Ni (90–10) tube have been used for the

Membrane distillation has been used for desalination of NaCl solutions and concentration of sucrose solutions. The effect of feed concentration on the performance has been studied. For the analysis, a theoretical model whose predictions on water fluxes agree well with the experimental ones has been

The treatment of a rejection of tannery effluent was carried out on an organic nanofiltration membrane. The rejection was recovered from a leather manufacturing plant in the area of Algiers (Rouiba). The effluent of the bath of tanning and liming charged with chromium ions was the subject of this st

A mathematical model is proposed to predict the transfer mechanism of calcium salts through a nanofiltration membrane. The model is a combination of Nernst-Planck and film theory equations and it is characterized by three transport parameters: solute permeability Ps, reflection coefficient σ and fil

Supports for microfiltration and ultrafiltration were prepared with Tunisian silty marls. Plastic pastes were prepared from a ceramic powder of silty marls mixed with organic additives and water. The pastes could be extruded to elaborate a porous tubular configuration. The supports fired at 1190°C a

The feasibility of micellar-enhanced ultrafiltration (MEUF) for the removal of nitrate, chromate, and ferriccyanide was investigated because of ionic competition to bind on the cetylpyridinium chloride micelles. In a single pollutants system, the order of removal efficiency was nitrate <chromate <fe

Competitive binding characteristics of anionic metals, chromate and ferriccyanide, with cetylpyridinium chloride micelles were investigated in micellar-enhanced ultrafiltration (MEUF). In MEUF process, removal of pollutants depends on the bind of pollutants to surfactant micelles which increases wit

Cadmium is one of the main toxic pollutants generated by industrial activities. Many methods have been used to remove cadmium from wastewater issued from these industries. In the present study removal of cadmium Cd(II) ions from aqueous streams was investigated through a nanofiltration membrane proc

A development program of a small-scale desalination unit, formerly designed and manufactured, was adopted to reduce the production cost of water and minimize the deviation in the water characteristics. Process design and full engineering were performed; the system was manufactured locally. It was op