الفهرس 
AbstractOnly 14 pages are availabe for public view
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Abstract
Biosurfactants have many advantages outside chemical one, which led to apply it through different important industrial sectors. So, the present study aimed for improving the bioremediation technology of contaminated wastewater using biosurfactants produced by bacterial isolates. In this regard, Bacillus thuringiensis and Bacillus toyonensis strains were obtained as most producing isolates of highly active biosurfactants. The optimized conditions for high biosurfactants yield production were established. Also, the stability of the produced biosurfactants at various conditions, pH, temperature, and salinity was studied. The biosurfactant has been reported up to 120 0C, pH 12 and 10% of NaCl. The identified biosurfactants were decanoic acid and oleamide were applied for wastewater remediation from oil residues and pathogens contamination. The biosurfactant was had high antibacterial activity compared with references antimicrobial drugs, as well as it is enhanced bioremediation technology for petroleum oil residues contaminating sites. Thus, we can say, these biosurfactants could achieve the objectives of sustainable development.