Study on uranium(VI) biosorption of marine-derived fungus treated by cetyltrimethyl ammonium bromide

Fusarium sp. # ZZF51 was chemically treated by cetyltrimethyl ammonium bromide to explore its potential for the removal of uranium(VI). The experimental results showed that the biosorption capacity and the removal efficiency for the modified mycelium under optimal conditions were 400.10 mg g(-1) and 96.02 %, respectively, which were more than those of the native biomass (21.42 mg g(-1) and 61.89 %). Lagergren's pseudo-secondorder kinetic model and Langumir isotherm model showed the better agreement with the experimental data. SEM experiment indicated the mycelium could provide ready access and rich surface area for uranium binding, and FTIR analysis revealed that hydroxyl, carbonyl, especially for nitrogen groups played important roles in biosorption.