BIOACCUMULATION AND BIOSORPTION OF STABLE CESIUM AND CESIUM-137 BY OSCILLATORIA HOMOGENEA CYANOBACTERIUM

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DABBAGH R.; GHAFOURIAN H.

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Paper Information

Journal: JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY Year:2013 | Volume:- | Issue:2 (64) Page(s): 1-7

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Title

BIOACCUMULATION AND BIOSORPTION OF STABLE CESIUM AND CESIUM-137 BY OSCILLATORIA HOMOGENEA CYANOBACTERIUM

Author(s)

DABBAGH R. | GHAFOURIAN H. | Issue Writer Certificate

Keywords

BIOSORPTIONQ2

BIOACCUMULATIONQ2

CESIUM-137Q2

CYANOBACTERIAQ2

Abstract

Removal of stable cesium and CESIUM-137 by living filamentous cells of Oscillatoria homogenea cyanobacterium from aqueous solution has been investigated. The removal levels of the stable cesium and CESIUM-137 were found to be 989ng Cs/mm3 biomass, and 2389 mBq 137Cs/mm3 biomass, respectively, after the contact time of 240 hours. The optimum pH for cesium uptake was 10±0.3. No significant change was observed at the pH values of 4, 6 and 8 for the cesium sorption by the cyanobacterium biomass. Increasing the cyanobacterium biomass caused more removal capacity. The maximum removal efficiency in the liquid culture containing 133 mg/L cesium and 20.53 mm3 biomass/ml culture was 5.75 mg/l. The removal efficiency were found to be 1.1% and 51.2% as the Cs-133 concentration, ranged beween 0.133 to 332.5 mg/l, respectively. At the 1200 Lux illumination, the maximum removal value was 1065 ng Cs/mm3 biomass, and in the presence of 332.5 mg/l cesium concentration (2.5 mmol/L), the sorption was obtained to be 4530 ng/mm3 biomass. The microprobe PIXE analysis and autoradiography technique were used to confirm the cesium sorption on the biomass. The sorption of the stable cesium and CESIUM-137 were fitted to Langmuir isotherm, and the model parameters were found to be qmax=854 ng Cs/mm3 biomass, 2272 mBq 137Cs/mm3 biomass, b=0.00011 (R2=0.97), and b=0.000009 (R2=0.96), respectively.

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APA: Copy

DABBAGH, R., & GHAFOURIAN, H.. (2013). BIOACCUMULATION AND BIOSORPTION OF STABLE CESIUM AND CESIUM-137 BY OSCILLATORIA HOMOGENEA CYANOBACTERIUM. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, -(2 (64)), 1-7. SID. https://sid.ir/paper/97985/en

Vancouver: Copy

DABBAGH R., GHAFOURIAN H.. BIOACCUMULATION AND BIOSORPTION OF STABLE CESIUM AND CESIUM-137 BY OSCILLATORIA HOMOGENEA CYANOBACTERIUM. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY[Internet]. 2013;-(2 (64)):1-7. Available from: https://sid.ir/paper/97985/en

IEEE: Copy

R. DABBAGH, and H. GHAFOURIAN, “BIOACCUMULATION AND BIOSORPTION OF STABLE CESIUM AND CESIUM-137 BY OSCILLATORIA HOMOGENEA CYANOBACTERIUM,” JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, vol. -, no. 2 (64), pp. 1–7, 2013, [Online]. Available: https://sid.ir/paper/97985/en

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