The employment of UV/TiO 2 /O 2 /H 2 O 2 system for the degradation of phenol red in aqueous solutions using synthesized nanosized TiO 2 powder has been investigated in the present study. The anatase TiO 2 nanoparticles were synthesized using sol-gel methodology and characterized spectroscopically exploiting SEM, TEM, XRD, and DUR-UV-VIS, in addition to BET analysis. We observe that the degradation of the dye depends on several operational parameters, such as initial pH, catalyst dosage, initial concentration of the dye, UV light intensity, irradiation time, catalyst particle size, and the presence of electron acceptors, such as hydrogen peroxide, besides molecular oxygen. Kinetic analyses indicate that the photodegradation rates of phenol red dye follow the pseudo-first-order kinetics according to the Langmuir-Hinshelwood model. The influence of temperature in the range 25-45°C was studied. The degradation kinetics were somewhat accelerated by increase in temperature, and apparent activation energy was calculated to be 38.23 kJ mol -1 . Thermodynamic parameters, DH # , DG # , and DS # of activation were also computed for the degradation process.

This study was examined the possibility of pomegranate peel residue (PPR) (which remains after extraction of antioxidants (phenolics)) for removing polluted cyanide ions from aqueous solutions using several operational factors via adsorption technique. The operational factors studied included initial concentration of (CN -), pH of aqueous solution, flowrate of the aqueous solution inside the adsorption unit, height of adsorption media and time of treatment. By means of changing the aforementioned variables within particular empirical ranges, the best operational conditions were identified that gave the highest percentage removal of cyanide ion from aqueous solutions which reach to 95.75%. The samples of PPR remaining after completion the adsorption process explained above have been used to prepare an effective toxic material for rodents. The lethal effect of this cheap rodenticide was investigated using laboratory rats of type Sprague Dawley (which has the scientific name Rattus rattus) as a case study. These toxic residues exhibited a fatal effect on this type of rats depending on the calculated half lethal dose (LD50) of its which was compared with the (LD50) mentioned in literature and scientific references and showed that it was within the required range. In this method, more than one type of toxic and nontoxic wastes was disposed by simple, benefit, non-cost and environment friendly way. This way represents by eliminating the cyanide ions from aqueous solutions to minimum possible concentration using nonvaluable agricultural wastes (PPR) and in the same time preparing a cheap and active rodenticide according to lethal dose (LD50) calculated accessing to zero residue level (ZRL). Initial Concentration of CNion (ppm) % Removal 60 66 72 78 84 90 96 0 15 30 45 60 75 90 105

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This study was examined the possibility of pomegranate peel residue (PPR) (which remains after extraction of antioxidants (phenolics)) for removing polluted cyanide ions from aqueous solutions using several operational factors via adsorption technique. The operational factors studied included initial concentration of (CN-), pH of aqueous solution, flowrate of the aqueous solution inside the adsorption unit, height of adsorption media and time of treatment. By means of changing the aforementioned variables within particular empirical ranges, the best operational conditions were identified that gave the highest percentage removal of cyanide ion from aqueous solutions which reach to 95.75%. The samples of PPR remaining after completion the adsorption process explained above have been used to prepare an effective toxic material for rodents. The lethal effect of this cheap rodenticide was investigated using laboratory rats of type Sprague Dawley (which has the scientific name Rattus rattus) as a case study. These toxic residues exhibited a fatal effect on this type of rats depending on the calculated half lethal dose (LD50) of its which was compared with the (LD50) mentioned in literature and scientific references and showed that it was within the required range. In this method, more than one type of toxic and non-toxic wastes was disposed by simple, benefit, non-cost and environment friendly way. This way represents by eliminating the cyanide ions from aqueous solutions to minimum possible concentration using non-valuable agricultural wastes (PPR) and in the same time preparing a cheap and active rodenticide according to lethal dose (LD50) calculated accessing to zero residue level (ZRL).

Metoclopramide HCl (MTB) is a potent antiemetic drug used for the treatment of nausea and vomiting. Many trials were made to prepare a satisfactory MTB orodispersible tablet using direct compression method.Various super disintegrants were used in this study which are croscarmellose sodium (CCS), sodium starch glycolate (SSG) and crospovidone (CP). The latter was the best in terms of showing the fastest disintegration time in the mouth.Among the different diluents utilized, it was found that a combination of microcrystalline cellulose PH101 (MCC 101), mannitol, dicalcium phosphate dihydrate (DPD) and Glycine was the best in preparing MTB orodispersible tablet with fastest disintegration time in the mouth.The physical parameters of the prepared MTB orodispersible tablet were satisfactory as hardness (4 Kg), friability (0.5%) and mouth disintegration (23 sec).The overall results suggest that the prepared formula of MTB as orodispersible tablet could be utilized as a new dosage form for the oral administration. Key words: Orodispersible, metoclopramide, super disintegrant