Effect of Culture Parameters on the Biosorption of Uranium onto Chlorella pyrenoidosa

Abstract:

The usefulness of chlorella pyrenoidosa were investigated for the removel of U(Ⅵ) from aqueous solution. Employing monofactorial and orthogonal experiment method for evaluating the biosorption of U(Ⅵ) onto chlorella pyrenoidosa, respectively, the influence of U(Ⅵ) concentration、pH、N/P and temperature on the biosorption of U(Ⅵ) by chlorella pyrenoidosa were studied.The results showed that the pH and U(Ⅵ) concentration were significant to remove U(Ⅵ) and that the increases of pH as well as U(Ⅵ) concentration was beneficial to the U(Ⅵ) absorption. However, the U(Ⅵ) absorption was affected less by the N/P and the temperature. Confirmed through orthogonal experiment, the optimum condition composition to attenuate U(Ⅵ) was 3.4mg/L U(Ⅵ) concentration at pH 6.0 with temperature 293K,and 3/1 of N/P. It was also proved that fresh cell of 1g/L(in dry weight) was able to attenuate U(Ⅵ) in wastewater from 3.4mg/L to 0.72 mg/L after batch experiments under the optimum conditions, which indicated good prospect in its future application.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 3321-3327
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.3321
• Online since: May 2012
• Authors: Shi You Li, Shui Bo Xie, Jin Xiang Liu, Li Shan Rong, Cong Zhao, Shuai Zhou
• Keywords: Biosorption, Chlorella Pyrenoidosa, Orthogonal Experiment, U(vi)

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