Research Abstracts

The effects of treatment and conditioning on sepiolite for the removal of Co2+ and Ni2+ from aqueous solutions were investigated by using a batch-type method. Effects of factors such as pH, concentration, stirring time, stirring speed and sorbent amount on adsorption were investigated. The initial a

A study was carried out to examine the removal of copper from an aqueous solution by phosphate rock (PR). The adsorption method was applied and optimum conditions for adsorption were evaluated by changing various parameters; effects of pH, adsorbent concentration, initial metal concentration and con

The investigations are related to some problems that arose in a demineralization water plant located in southern Brazil: membrane degradation, and decline of membrane performance after cleaning. The water pretreatment of this plant utilizes aluminum sulfate in order to coagulate suspended solids, an

Numerical and experimental analyses were performed for a modified air gap distillation membrane that combines the low conductive heat loss of an air gap membrane for distillation with the reduced mass transfer resistance of a direct contact membrane. Instead of a stagnant film of air separating the

Removal of hydrogen sulfide from aqueous solutions has been studied using cupric oxide (CuO) and zinc oxide (ZnO) as adsorbents. The adsorption capacity of both CuO and ZnO for H2S from aqueous solutions was determined under various conditions of temperature and solution pH. Equilibrium data were us

A novel configuration of a photocatalytic slurry reactor using low-pressure mercury lamps coupled with membrane filtration was proposed, and treatment of polluted river water with a pilot plant of this system was investigated. Both + COD and NH4 -N in the river water were simultaneously removed. Und

Seasonal variations of trihalomethane (THM) concentrations were investigated within distribution systems of the Buyukcekmece water treatment plant in Istanbul City (Turkey). The investigation was based on an intensive 30-week sampling program, undertaken during the spring, summer and fall of the yea

Permeate flux decline is a major item when considering pressure driven membrane filtration. The decline is a result of the deposition of (dispersed) feed materials as a layer on the membrane surface. This means loss of production of permeate or, when applying a higher compensating pressure, loss of

An experimental investigation is presented of the thermal performance of an agricultural greenhouse (GH) with a built-in solar distillation system. A set of solar basins with saline water was placed on the greenhouse roof to reduce the GH cooling load and to produce the required fresh irrigating wat

Intensive water-demanding industries require an effective management of water sources and wastes in order to implement as much recovery as possible with the quality standards of the production activity. Besides the application of good environmental practices pursued by the IPPC Directive, an optimal