Mohamed R. Lasheen

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The objective of this study was to evaluate the toxic impact of wastewater discharge effluent on aquatic environment. Lead, Zinc, Copper and Cadmium were determined in some tissues of sharp toothed African Catfish (Clarias garipinus) and Nile tilapia (Oreochromis niloticus) collected from only two sites and water samples from all six sites. The(More)
The metals speciation in all sludge samples from the different Wastewater Treatment Plants (WWTPs) indicated that, Mn, Ni and Zn were most abundant in the exchangeable, carbonate and Fe/Mn-oxide forms which are the easily assimilable fractions and showed the greatest degree of their mobility, while Cd, Cu, Cr and Fe were major in the organic and sulfide(More)
A highly selective and sensitive procedure for flotation separation followed by spectrophotometric determination, confirmed by AAS, of Ni(II) traces is proposed. The maximum flotation separation (100%) is achieved at approximately 25 degrees C in the pH range of 1-3 using sodium diethyldithiocarbamate (as a collector) and oleic acid surfactant. The floated(More)
The major objective of this study is to assess the effect of stagnation time, pipe age, pipes material and water quality parameters such as pH, alkalinity and chloride to sulfate mass ratio on lead and iron release from different types of water pipes used in Egypt namely polyvinyl chloride (PVC), polypropylene (PP) and galvanized iron (GI), by using fill(More)
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