中文摘要：

研究了南海红树林内源真菌Fusariumsp．#ZZF51富集铀（Ⅵ）的特性。初步结果表明，受试菌吸附铀（Ⅵ）的吸附平衡时间为60rain，常温常压下吸附最佳条件为pH-4．0，铀（Ⅵ）的初始质量浓度为50mg／L，吸附时间为60rain，铀（Ⅵ）的吸附容量为15．46mg／g。Langmuir和Freundlich方程均能较好地描述该受试菌对铀（Ⅵ）的平衡吸附行为。此外，通过真菌Fusariumsp．#ZZF51吸附铀（Ⅵ）前后红外光谱图可知，在吸附过程中，羟基和羰基都起重要作用。

英文摘要：

The uranium（Ⅵ） biosorption was studied in detail by using the biomass of man- grove endophytic fungus Fusarium sp. # ZZF51 from the South China Sea. The results show that the uranium （Ⅵ） biosorption process onto the tested fungus powders is optimized at pH=4.0, adsorption time 60 rain, and uranium（Ⅵ） initial mass concentration 50 mg/L with 15.46 mg/g of adsorption capacity. The experimental data are analyzed by using the Lang- muir model and the Freundlich model, and they provide better correlation with the experi- mental data for adsorption of uranium （Ⅵ）. In addition, according to Fourier transforminfrared spectra for Fusariurn sp. # ZZF51 before and after loaded wlttl uramum（ Ⅵ）, alillllU and hydroxyl groups range from 3 408 cm^-1 to 3 452 cm^-1 , and the stretching vibrations of carbonyl band shifts from 1 649 cm^-1 to1 631 cm^-1. By comparing with Fourier transform infrared spectra for the tested fungus before and after loaded with uranium（ VI）, hydroxyl and carbonyl groups have an important contribution to the adsorption process.