title: The effect of Paecilomyces catenlannulatus on removal of U(VI) by illite.
abstract: The effect of Paecilomyces catenlannulatus (P. catenlannulatus) on removal of U(VI) onto illite as a function of contact time, pH, ionic strength, and solution concentration was conducted by batch techniques. The adsorption kinetics indicated that the removal of U(VI) on illite and illite coated P. catenlannulatus can be fitted by pseudo-second order kinetic model very well. The removal of U(VI) on illite and illite coated P. catenlannulatus increased with increasing pH from 1.0 to 7.0, whereas the decrease of U(VI) adsorption on illite and illite coated P. catenlannulatus was observed at pH > 7.5. The adsorption behavior of U(VI) on illite and illite coated P. catenlannulatus can be simulated by the double diffuse model under various pH conditions. The ionic strength-dependent experiments showed that the removal of U(VI) on illite was outer-sphere surface complexation, whereas the inner-sphere surface complexation predominated the U(VI) adsorption onto illite coated P. catenlannulatus at pH 5.0-7.0. The maximum adsorption capacity of U(VI) on illite and illite coated P. catenlannulatus calculated from Langmuir model at pH 5.0 and T = 298 K was 46.729 and 54.347 mg/g, respectively, revealing enhanced adsorption of U(VI) on illite coated P. catenlannulatus. This paper highlights the effect of microorganism on the removal of radionuclides from aqueous solutions in environmental pollution management.
authors.affiliation: The College of Plant Protection, Anhui Agricultural University, Hefei 230036, China; The School of Life Science and Environmental Science, Huangshan University, Huangshan 245041, China.
authors.forename: Fengbo
authors.initials: F
authors.lastname: Li
authors.affiliation: The College of Plant Protection, Anhui Agricultural University, Hefei 230036, China. Electronic address: gaozhimou@126.com.
authors.forename: Zhimou
authors.initials: Z
authors.lastname: Gao
authors.affiliation: The School of Life Science and Environmental Science, Huangshan University, Huangshan 245041, China.
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Li
authors.affiliation: The School of Life Science and Environmental Science, Huangshan University, Huangshan 245041, China.
authors.forename: Lejin
authors.initials: L
authors.lastname: Fang
mesh_terms: D008903:Minerals / Q000378:metabolism*; D008954:Models, Biological; D010143:Paecilomyces / Q000378:metabolism*; D011834:Radiation Monitoring; D012990:Soil Pollutants, Radioactive / Q000378:metabolism*; D013997:Time Factors; D014501:Uranium / Q000378:metabolism*
chemical_list: D008903:Minerals; D012990:Soil Pollutants, Radioactive; C099089:illite; D014501:Uranium
keywords: Illite; Paecilomyces catenlannulatus; Removal; Uranium