title: Biosorption characteristics of Uranium (VI) from aqueous solution by pollen pini.
abstract: Uranium biosorption from aqueous solutions by pollen pini (Pinus massoniana pollen) was studied in a bath system. The biosorbent was characterized by Fourier-transform infrared spectroscopy and scanning electron microscope. The influences of pH, contact time and initial uranium concentration at room temperature were investigated and the experimental curves were obtained. The pollen pini exhibited the highest uranium sorption capacity at pH 5.0 after 2 h contact. At pH 2.5 pollen pini also exhibited a good uranium loading capacity (>15%). Therefore biosorption characteristics of uranium from aqueous solution onto pollen pini were examined at pH 2.5 as well. The kinetics followed a pseudo-second-order rate equation and adsorption process was well fitted with the Freundlich isotherm at both pH. The adsorption of uranium by the biosorbent was confirmed by energy dispersive spectroscopy. The present study suggested that pollen pini could be a suitable biosorbent for biosorption uranium (VI) from aqueous solution in a fast, low cost and convenient approach.
authors: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China.
authors: Feihong
authors: F
authors: Wang
authors: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China.
authors: Lichao
authors: L
authors: Tan
authors: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China.
authors: Qi
authors: Q
authors: Liu
authors: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China.
authors: Rumin
authors: R
authors: Li
authors: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China.
authors: Zhanshuang
authors: Z
authors: Li
authors: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China.
authors: Hongsen
authors: H
authors: Zhang
authors: Institute of Advanced Marine Materials, Harbin Engineering University, 150001, China.
authors: Songxia
authors: S
authors: Hu
authors: Institute of Advanced Marine Materials, Harbin Engineering University, 150001, China.
authors: Lianhe
authors: L
authors: Liu
authors: Key Laboratory of Superlight Material and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, China; Institute of Advanced Marine Materials, Harbin Engineering University, 150001, China. Electronic address: zhqw1888@sohu.com.
authors: Jun
authors: J
authors: Wang
mesh_terms: D000327:Adsorption; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D028223:Pinus / Q000378:metabolism*; D011058:Pollen / Q000378:metabolism*; D011848:Radioactive Pollutants; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D014501:Uranium / Q000378:metabolism*
chemical_list: D011848:Radioactive Pollutants; D014501:Uranium
keywords: Biosorption; Isotherm; Pollen pini; Uranium (VI)