الفهرس 
Chapter (1) Introduction and literature SurveyOnly 14 pages are availabe for public view
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Abstract
Dyes have become one of the main sources of severe water pollution as a result of the rapid development of the textile industries. Dyes, especially those with good water solubility are difficult to be removed from their effluents due to their inert properties-anti-degradability by Photos, oxidants and biological agents. Besides, their low amounts in the effluents always bring on high costs of treatment. The adsorption processes have been preferred to remove colors from waste effluents because of their low initial costs, simplicity of design and ease of operation. Recently, adsorption techniques using composite have been developed to absorb anionic and cationic dyes from aqueous solutions.
Thesis consists of three main chapters:
The first chapter is the introduction. It explains the water pollution and its sources. In addition, it contains a survey about most modern techniques used to remove dyes from wastewater. The types of different adsorbents are illustrated, showing the properties of good adsorbents for dyes removal. At the end of this chapter, a literature survey about the recent publications of adsorption cationic dyes such as Methylene Blue and Brilliant green also the adsorption of anionic dyes such as acid red57 and remazol red and uses of Nano composites as adsorbent..
The second chapter is the materials and methods. This chapter mainly focuses on experimental reagents used for batch adsorption experiments and various characterization techniques for composites. Also it includes the electrical measurements ( AC conductivity)
The third chapter is the results and discussion. It consists of three parts:
First Part:
It includes the characterization of zeolitic imidazolate framework-7 ZIF-7 via FTIR, SEM, BET, XRD and EDX. This adsorbent exhibited high adsorption capacity towards Methylene Blue (MB) and Brilliant Green (BG). The maximum monolayer adsorption capacities are 0.19 mmol/g at PH 9 and 25 oC for MB while 0.25 mmol/g at PH 8 and 25 oC for BG. The nature of interaction between the dye and the adsorbent was found to be dependent upon the PH of the medium. The adsorption process carried out by ion exchange mechanism. The adsorption isotherms are well fitted by the Langmuir equation. Uptake kinetics is correctly fitted by the pseudo-second order rate equation. The thermodynamic parameters have been determined which indicated that the reaction is spontaneous for MB and BG, the reaction is endothermic for MB and BG under the experimental conditions and the randomness of the system increases with MB and BG adsorption. Even under drastic conditions of high ionic strength, the sorbent maintained its high sorption capacity. The adsorbents can be used successfully up to 3 times or more without significant loss of its original efficiency regenerated by 0.01 M HCl and 0.01 M NaOH until PH reaches 7. This means that the studied sorbent is a promising sorbent for the efficient removal of MB and BG dye from wastewater. The AC properties of ZIF-7 was studied and showed a typical semiconductor behavior.
Second Part:
It includes characterization of Na-mordenite. The prepared adsorbent was characterized via FTIR, SEM, BET, XRD and EDX. This adsorbent exhibited high adsorption capacity towards Methylene Blue (MB) and Brilliant green (BG). The maximum monolayer adsorption capacities are 0.0026 mmol/g at PH 9 and 25 oC for MB while 0.008 mmol/g at PH 8 and 25 oC for BG. The nature of interaction between the dye and the adsorbent was found to be dependent upon the PH of the medium. The adsorption process carried out by ion exchange mechanism. The adsorption isotherms are well fitted by the Langmuir equation. Uptake kinetics is correctly fitted by the pseudo-second order rate equation. The thermodynamic parameters have been determined which indicated that the reaction is spontaneous and endothermic for MB and BG under the experimental conditions and the randomness of the system increases with MB and BG adsorption. The AC properties of Na-mordenite was studied and showed a typical semiconductor behavior.
Third Part:
It includes the preparation and characterization of Na-mordenite@zeolitic imidazolate framework-7 composites NaM@ZIF-7(3). The prepared adsorbent was characterized via FTIR, SEM, BET, XRD, XPS and EDX. This adsorbent exhibited high adsorption capacity towards Brilliant green (BG). The maximum monolayer adsorption capacities are 1.2 mmol/g at PH 8 and 25 oC for MB while 1.06 mmol/g at PH 9 and 25 oC for BG.. The nature of interaction between the dye and the adsorbent was found to be dependent upon the PH of the medium. The adsorption process carried out by ion exchange mechanism. The adsorption isotherms are well fitted by the Langmuir equation. Uptake kinetics is correctly fitted by the pseudo-second order rate equation. The thermodynamic parameters have been determined. adsorption of MB and BG dye onto NaM@ZIF-7(3) was spontaneous, endothermic and the randomness of the system increases with MB and BG adsorption.