期刊论文

Biosorption of Th(Ⅳ) From Aqueous Solutions by Citric Acid Modified Mangrove Endophytic Fungus Fusarium sp.#ZZF51

中文

核化学与放射化学

0253-9950

2016

38

3

182-187

10.7538/hhx.2016.38.03.0182

湖南省科技发展项目（2010FJ3014）；

本校为其他机构

采用生物吸附法去除废水中Th (Ⅳ),研究了南海红树林内源真菌Fusarium sp.#ZZF51化学改性后吸附Th (Ⅳ)的行为特性、吸附模型及吸附机理。通过柠檬酸对真菌Fusarium sp.#ZZF51进行修饰,将吸附剂表面的羟基与柠檬酸发生酯化,能更有效地吸附钍离子。结果表明:常温常压下,pH=4.5,ρ_0(Th(Ⅳ))=50 mg/L,吸附剂0.03 g,反应90 min,最大吸附率为90.87%,吸附量为75.47 mg/g,吸附量比未经处理的真菌(最优吸附条件下,吸附量为11.35 mg/g)吸附要大。通过Langmuir、Freundlich、Temkin三种等温吸附模型对数据进行拟合,Langmuir模型能更好地描述受试菌对Th (Ⅳ)的平衡吸附行为,同时吸附过程能很好的用准二级反...

To remove Th(IV) ions from wastewater, the adsorption behavior was investigated by mangrove endophytic fungus Fussarium sp.#ZZF51 that citric acid treated from South China Sea. The biosorption process was optimized at pH=4.5, equilibrium time 90 min, initial Th(IV) mass concentration 50 mg/L and adsorbent dose 0.6 g/L with 90.87% of removal efficiency and 75.47 mg/g of adsorption capacity, which is obviously greater than that (11.35 mg/g) of the untreated fungus Fussarium sp.#ZZF51 for Th(IV) biosorption under the condition of optimization. The...