الفهرس 
PrefaceOnly 14 pages are availabe for public view
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Abstract
The current thesis provided a comparative study on alginate content of common and dominant perennial brown marine algae of Aqaba Gulf, Red Sea, Egypt. Sampling was chiefly focused on collection of the living and drift biomass of perennial brown algae that grow permanently in the study area. Samples were seasonally collected in mid-winter, mid-spring, mid-summer and mid-fall. Four brown perennial macroalgae namely: Turbinaria murayana, Padina pavonia, Cystoseira myrica, Cystoseira spinosa, were selected as test algae. The alginate content of the brown algae under investigation was extracted as water soluble sodium salt. As the major objective of the present study was to study the efficiency of alginate-immobilized microalgae to remove ammonia for a toxic wastewater; some relevant physico-chemical analysis were carried out. Three microalgae species, namely Synechcoccus sp, Scenedesmus quadricauda, and Chlorella minutissima were isolated from water samples collected downstream the drain receiving ammonia rich industrial wastewater. Both blank and alginate-algae beads were handled through deliberate research trials to assess and to compare their efficiencies to remove ammonium-N from the toxic wastewater. Partially treated wastewater with ammonium-N concentration of 58 mg l-1 and pH of 7.2 supported three times biomass production of Chlorella minutissima compared to control batch culture.