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Citation: ZHAO Yi-Yun, YUAN Dong-Mei, WANG Ruo-Nan, BAO Ci-Guang. Application of Uniform Design in Adsorption of Pd²⁺ Ion by Nitzschia hantzschiana Rabh.[J]. Chinese Journal of Applied Chemistry, ;2003, 20(11): 1105-1107. shu

Application of Uniform Design in Adsorption of Pd²⁺ Ion by Nitzschia hantzschiana Rabh.

1.
a Department of Applied Chemistry, Yunnan University, Kunming 650091;
2.
b Department of Biology, Yunnan University, Kunming 650091

Corresponding author: ZHAO Yi-Yun,
Received Date: 24 February 2003
Available Online: 2 July 2003
Fund Project: 云南省自然科学基金项目(2000B0005M) (2000B0005M)

Studies on the adsorption of Pd²⁺ ion by Nitzschia hantzschiana Rabh., a diatom were carried out. Uniform design was used to arrange the experiment. The growth period of diatom, adsorption time, concentration of Pd²⁺ and pH were found to have positive effects on the adsorption amount of Pd²⁺ on diatom. The optimum conditions are: the growth period of diatom 12 days, adsorption time=6 h, [Pd²⁺]=0.01 g/L and [H⁺]=0.16 mol/L. EPMA analysis showed that the diameter of the reduced adsorbed Pd was about 1 μm. A mathematical model was found to describe experimental data, that the adsorption fits to Freundlich equation, Q=70.2[Pd²⁺]^0.76. The adsorption amount of Pd²⁺ on diatom increased logarithmically with the increase of Pd²⁺ concentration.
- Nitzschia hantzschiana Rabh,
- palladium,
- adsorption,
- uniform design
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Application of Uniform Design in Adsorption of Pd²⁺ Ion by Nitzschia hantzschiana Rabh.