零价铁-克雷伯氏菌联合体系对亚甲基蓝溶液的脱色性能

以零价铁(ZVI)和一株高效脱色菌克雷伯氏菌yl-1作为联合体系,研究其对亚甲基蓝溶液的脱色性能,并采用单因素实验及中心组合设计-响应面分析法(CCD-RSM法)对该过程的脱色条件进行优化。实验结果表明:相比于单独ZVI体系和单独yl-1脱色菌体系,ZVI-脱色菌联合体系的脱色率分别提高了40%和10%;在初始pH为8、初始亚甲基蓝质量浓度为250 mg/L、ZVI投加量为4.0 g/L、反应温度为33℃的最优条件下,ZVI-脱色菌联合体系对亚甲基蓝脱色反应液的脱色率为91.33%。

Decolorization capability of zero valent iron-Klebsiella sp. strain combination system to methylene blue solution

Zero valent iron and a high-efficient decolorizing strain Klebsiella sp. yl-1 were used as a combination decolorization system. Its decolorization capability to methylene blue solution was studied. The decolonization conditions were optimized by single factor experiments and center combination design-response surface analysis method（CCD-RSM method）experiments. The experimental results showed that：The decolorization rate by the ZVI-decolorizing bacteria combination system was increased by 40% and 10% respectively,compared with the single ZVI system and the single strain yl-1 system;Under the optimum conditions of initial pH 8,initial methylene blue mass concentration 250 mg/L,ZVI dosage 4.0 g/L and reaction temperature 33 ℃,the decolorization rate of methylene blue solution by the ZVI-decolorizing bacteria combined system could reach 91.33%.