الفهرس 
Aim of the workOnly 14 pages are availabe for public view
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Abstract
The growing need for development of new methods in chemical technology represents a major challenge facing mineral, metallurgical and material processing industries. Water pollution is nowadays a matter of deep apprehension and as far as the toxic metals are concerned, it is known that elevated concentrations of them are detrimental for aquatic life and through the food chain, toxic for mankind. Therefore, intense scientific research is being directed towards the implementation of novel approaches dealing with the efficient removal of toxic metals from wastewaters. Sorption and flotation are important treatment technologies for this problem, and several novel sorbents and processes continuously appear in the scientific literature. Accordingly, this work is devoted to study the different factors controlling the separation of Cu(II) and Pb(II) from different aqueous media. Sorption and flotation techniques were the best among the well known separation methods (used in this work) because of their simplicity, saving time, accuracy alongside their inexpensive chemicals and equipment. Moreover, this investigation aims to establish the use of cheap and widely spread limestone as sorbents and oleic acid as surfactant in a process known as sorptiveflotation. Moreover, precipitate flotation is investigated for lead and copper separation, using poly aluminum chloride silicate and phenylsemicarbazide as precipitating agent. Also, ion flotation is carried out for copper using diphenylcarbazone, as a chelating agents and oleic acid as a surfactant.