المعالجة الإحيائية لبعض العناصر الثقيلة باستخدام بعض مواد النشاط السطحي Biosurfactant المعزولة من بكتريا Bacillus cereus

Abstract EN

Using of microbiology or biosurfactant was important in removal of heavy metals.

In this study Bacillus cereus had ability of hemolysis of blood and production of biosurfactant .The minimal inhibition concentration of mercury and chromium were 250mg/L and300 respectively Presence of lipopeptide with Bacillus cereus in the medium reduced the removal of heavy metals.

90% of mercury was removed by Bacillus cereus cells , 96% was removed by biosurfactant and uptake by Bacillus cereus whereas 61% by Bacillus cereus only during 24h.

93% of chromium was removed by Bacillus cereus cells , 99% was removed by biosurfactant and uptake by Bacillus cereus whereas 76% of mercury by Bacillus cereus during 24h .

Removal of heavy metals was decreased with increasing of mercury and chromium concentration in the medium.