الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
1) Chapter (І)
Introduction about water importance, water supply approach in Egypt, sources of ammonia and phosphate in water resources, impact and their ways of treatment.
2) Chapter (II)
Literature review declared recent general tools of treatment of ammonia and phosphate from contaminated water with a focus on removal of ammonia and phosphate using microalgae.
3) Chapter (III)
Includes the experimental part, materials, solutions, their preparation techniques, instruments, analysis used in this work, and the practical procedures that have been carried out in this study.
4) Chapter (IV)
The main topics of this work can be classified into the following:
A. Isolation and cultivation of Scenedesmus quadricauda microalga
S. quadricauda was isolated and purified and applied to remove ammonia and phosphate form artificial samples by utilizing them with different techniques.
B. Removal of ammonia and phosphate using free microalga S. quadricauda
The maximum removal percentage of 1 mg/l ammonia and phosphate reaches up to 100% and 86% at 4th day, respectively. Meanwhile for 5 mg/l ammonia and phosphate, the maximum removal percentage reaches 91.8% at 4th day for ammonia and 61% at 6th day for phosphate.
Ammonia and phosphate were efficiently removed by using free microalga S. quadricauda but the main obstacle was the harvesting problem.
C. Application of Immobilized S. quadricauda on composite of sodium alginate and poly vinyl alcohol.
SUMMARY
VI
S. quadricauda entrapped in calcium alginate as algal beads was employed to remove inorganic ammonia and phosphate in order to overcome the harvesting problem. The removal percentage for 5 ppm ammonia and phosphate was 100% at 4th
day for ammonia and 61% at 6th day for phosphate utilizing the immobilized microalga. The practical work concluded that removal percentage of immobilized microalga was nearly close to the removal percentage of free microalga. D. Application of co-Immobilized S. quadricauda on composite of sodium alginate and poly vinyl alcohol. A combination of microalgae S. quadricauda and a microalgae growth promoting bacterium (Azotobacter chroococcum, and Bacillus megaterium), co-
immobilized in small alginate beads, was developed to remove ammonia and phosphate form artificial samples. The removal percentage enhanced by the addition of microalga growth promoting bacteria MGPB A. chroococcum and B. megatherium reaching removal capacity up to 100% ammonia, and 80.4% phosphate at 2nd and 6th days respectively.