Fe~(3+)@酵母菌非均相UV-Fenton降解染料废水

以球形酵母菌为生物载体,饱和吸附Fe3+后,获得了Fe3+@酵母菌核壳微球。SEM,EDS及FT-IR对微球的结构进行了表征。实验研究了Fe3+@酵母菌非均相UV-Fenton降解碱性嫩黄O染料废水,考察了H2O2浓度、Fe3+@酵母菌催化剂的投加质量浓度、pH值、碱性嫩黄O染料的初始质量浓度等对反应的影响。结果表明,微球的直径在3.1—3.3μm,具有较好的球形形貌和壳壁强度。核壳结构的形成主要源自于生物吸附作用。当H2O2浓度为3.5 mol/L,pH值为3—4,催化剂质量浓度为5.5 g/L时,Fe3+@酵母菌非均相UV-Fenton降解碱性嫩黄O染料废水表现出了较好的去除效率。

Heterogeneous UV-Fenton degradation of dye effluents by using Fe3+@yeasts

Fe3+@yeasts microspheres with core-shell structures were prepared by using spherical yeast as bio-template after saturated absorption of Fe3+.The products were characterized by SEM,EDS and FT-IR,respectively.The degradation of Basic Flavine O dye effluents was investigated in the presence of as-obtained Fe3+@yeasts microspheres.The effect of H2O2 concentration,the adding mass concentration of Fe3+@yeasts catalyst,pH value and the initial mass concentration of Basic Flavine O dye on the reaction was studied.The results indicate that Fe3+@yeasts microspheres with diameter of 3.1-3.3 μm have good spherical shapes and excellent mechanical strength.The formation mechanism of core-shell structures can be attributed to the bio-sorption function.Moreover,the microspheres present good catalytic performance for removal of dye molecular under the optimal operational parameters of the concentration of H2O2 3.5 mol/L,pH 3-4,the mass concentration of catalysts 5.5 g/L.