Fe^0-厌氧微生物体系处理活性艳蓝X-BR的试验研究  

Laboratory study on the decolorization of reactive brilliant blue X-BR treated by an integrated Fe^0–anaerobic biological system

作　　者：郭燕[1] 肖利平[1] 邓志毅[1] 汤文琪[1] 

机构地区：[1]湘潭大学环境工程系,湖南湘潭411105

出　　处：《中国环境科学》2010年第4期510-515,共6页China Environmental Science

基　　金：湖南省科技厅资助项目(06SK4036);湘潭大学博士启动基金(08QDZ31)

摘　　要：采用零价铁(Fe0)-厌氧微生物处理体系,以蒽醌染料活性艳蓝X-BR为处理对象,通过摇床试验研究了Fe0投加量、pH值等因素对染料脱色的影响,并对比了该染料在3种不同处理体系中的脱色效果.结果表明,在Fe0-厌氧微生物体系中,Fe0投加量和pH值均存在最适宜值,当两者分别控制在400mg/L和7,染料初始浓度和反应时间分别为100mg/L和68h时,该体系脱色率可达到90%以上;与相同反应条件下的纯Fe0、纯厌氧微生物体系相比,该体系的脱色率提高近40%.根据紫外-可见光谱分析,Fe0可有效促进厌氧微生物对X-BR及其中间产物的降解,实现完全脱色.其脱色符合准一级动力学,当染料初始浓度由50mg/L增至800mg/L时,反应速率常数k值由0.0470h-1降至0.0102h-1.An anthraquinone dye,reactive brilliant blue X-BR,was treated by an integrated Fe0-anaerobic biological system. Through shake flasks tests,the effects of some factors,such as Fe0 dose,pH,etc.,on the decolorization of X-BR were studied. The decolorization effects of the dye in three different treatment systems were compared as well. The Fe0 concentration and pH had optimal values during the decolorization of X-BR in Fe0-anaerobic biological system. When Fe0 dose,initial pH value and X-BR concentration were 400mg/L,7 and 100 mg/L respectively,the decolorization rate of X-BR in the integrated system could reach up to 90% after 68 h reaction. Compared with pure Fe0 and pure microorganism treatment systems,it could be improved about 40% under the same experimental conditions. In addition,the analysis result of UV-vis spectrogram indicated that Fe0 could promote effectively biodegrading of anthraquinone dye X-BR and its intermediate products. The decolorization kinetics of X-BR was in accordance with pseudo first-order reaction dynamics and the reaction rate constant reduced from 0.0470h-1 to 0.0102h-1 with the dye concentration increased from 50mg/L to 800mg/L.

关 键 词：厌氧微生物 零价铁 活性艳蓝X-BR 染料 

分 类 号：X703[环境科学与工程—环境工程]