无花果曲霉菌丝球对活性艳蓝KN-R的脱色研究

Study on Decolorization of Reactive Brilliant Blue KN-R by Mycelial Pellets from Aspergillus ficuun

生物吸附法是染料废水处理中很有前途的一种方法。本文将培养的无花果曲霉菌丝球用于蒽醌染料活性艳蓝KN-R的脱色,研究了培养时间、温度、转速、pH值及盐浓度、不同碳源、不同氮源对菌丝球脱色的影响;比较了活菌与死菌的脱色效果;探讨了菌丝球重复利用对脱色率的影响。结果表明:培养时间为72 h,温度为33℃,转速为150 rpm,pH值为6.0,盐浓度为0.5%,以乳糖为碳源、硝酸钠为氮源时,菌丝球对活性艳蓝KN-R的脱色效果最好;活菌对染料的吸附性能比死菌好;菌丝球在重复利用了四次后,脱色率仍达85.7%。

Biosorption is a promising way in the dye removal processes for dye wastewater. In this study, Mycelial pellets from Aspergillus ficuun were used in the removal of an anthraquinone dye, Reactive Brilliant Blue. The results show that under the conditions of cultural time 72h, temperature 33℃, agitation rate 150 rpm, pH 6.0, salt concentration 0.5%, lactose as carbon source, and NaNO3 as nitrogen source, the decolorization efficiency is the best, and the living mycelia has better absorptive capacity than dead ones. When the mycelial pellets were mused for four times, its decolorization rate can still be up to 85.7%.