Mohamed A. Elsayed; Mohamed I. Awaad; Hesham R. Tantawy
Abstract
Through this research, the degradation of Tartrazine (TZ) azo-dye in synthetic wastewater solutions, has been examined under the influence of diverse experimental circumstances of ultrasound and ultraviolet irradiation. At small initial concentrations of Tartrazine (TZ) (10ppm), the photochemical process ...
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Through this research, the degradation of Tartrazine (TZ) azo-dye in synthetic wastewater solutions, has been examined under the influence of diverse experimental circumstances of ultrasound and ultraviolet irradiation. At small initial concentrations of Tartrazine (TZ) (10ppm), the photochemical process alone was considered efficient for degradation of TZ. However, in the case of sonochemical alone, the degradation continued very gently, resulted in fewer than 53% of Tartrazine (TZ) elimination after 200 min. Whereas, the adding of an oxidant such as H2O2 leads to increasing the degradation efficiency to certain extent. Additional increasing of H2O2 over the optimum concentration decrease the degradation because of the scavenging consequence of excess H2O2.
Hussein Oraby; Mohamed A. Elsayed; Mohamed Gobara; Magdy Senna
Abstract
In this work, trials have been made to prepare different graft copolymers by direct irradiation grafting technique and evaluating their reverse osmosis properties. The acrylic acid monomer was grafted onto two improper polymers (low and high-density polyethylene) by means of gamma-ray as a motivator. ...
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In this work, trials have been made to prepare different graft copolymers by direct irradiation grafting technique and evaluating their reverse osmosis properties. The acrylic acid monomer was grafted onto two improper polymers (low and high-density polyethylene) by means of gamma-ray as a motivator. The optimum conditions of preparation were using acetone as a solvent, monomer concentration 30% (wt/wt), using anhydrous ferric chloride as an inhibitor with optimum concentration 0.1% (wt/wt) and irradiation dose 20 KGy. Mechanical, rheological and thermal properties of the prepared membrane were also investigated. The prepared grafted membranes showed significant results in RO desalination method using underground saline water from Abo Swear, Ismailia, Egypt. Copyright © VBRI Press.