Study the ability of Nocardia convoluta isolated from water of eastern part of al – Hammar marsh of Biosorption of trace metals (Cu+2 , Zn+2 , Pb+2 , Cd+2) laboratorly.

Ali, D.S.; Mahdi, K.H.; Mohamed, A.J.

	Study the ability of Nocardia convoluta isolated from water of eastern part of al – Hammar marsh of Biosorption of trace metals (Cu+2 , Zn+2 , Pb+2 , Cd+2) laboratorly.
basrah journal of science
Article 1, Volume 28, Issue 2, 2010, Pages 33-46 PDF (0 K)
Authors
D.S. Ali; K.H. Mahdi; A.J. Mohamed
Abstract
This study includes isolation and identification of Nocardia convoluta from the water of east AL-Hammar marsh in Basra city and these bacteria recorded for the first time in Iraq . Samples were collected during spring 2008 Chemicals and physicals features has been determine for water samples , the results showed that there was a positive moral relationship ( r = 0.76 ) between nitrate concentration and presence of actinomycetes . Also the study includes determination of concentration of heavy metals dissolved in water , The concentration of Cu+2 and Zn+2 higher then concentration of Pb+2 and Cd+2 in the east AL-Hammar marsh. The identifying bacteria were used in this study in the process of biosorption of trace metals ions ( Cu+2 , Zn+2 , Pb+2 , Cd+2 ) at different concentration ( 5 , 10 , 20 , 30 , 50 ) mg L . Nocardia convoluta showed that it has great ability of eliminate lead metal which reached 16.47 mgg where as the percentage for eliminating this metal was 91.57% at concentration 30 mgL . The effect of cell type ( dead and live ) and incubation period on biosorption process has been studied . the dead cells were better than living cells in biosorption by N . convoluta , and the incubation period of 24 hours had appeared that it was best that than of 48 and 72 hours.

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