CAJ | 학술논문

采用零价铁(Fe~0)-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Fe~0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F~0-厌氧微生物体系中,Fe~0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Fe~0、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,Fe~0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).
채용령개철(Fe~0)-염양미생물처리체계,이은곤염료활성염람X-BR위처리대상,통과요상시험연구료Fe~0투가량、pH치등인소대염료탈색적영향,병대비료해염료재3충불동처리체계중적탈색효과.결과표명,재F~0-염양미생물체계중,Fe~0투가량화pH치균존재최괄의치,당량자분별공제재400mg/L화7,염료초시농도화반응시간분별위100mg/L화68h시,해체계탈색솔가체도90%이상;여상동반응조건하적순Fe~0、순염양미생물체계상비,해체계적탈색솔제고근40%.근거자외-가견광보분석,Fe~0가유효촉진염양미생물대X-BR급기중간산물적강해,실현완전탈색.기탈색부합준일급동역학,당염료초시농도유50mg/L증지800mg/L시,반응속솔상수k치유0.0470h~(-1)강지0.0102h~(-1).
An anthraquinone dye,reactive brilliant blue X-BR,was treated by an integrated Fe~0-anaerobic biological system.Through shake flasks tests,the effects of some factors,such as Fe~0 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 Fe~0 concentration and pH had optimal values during the decolorization of X-BR in Fe~0-anaerobic biological system.When Fe~0 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 Fe~0 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 Fe~0 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 0.01 02h~(-1) with the dye concentration increased from 50mg/L to 800mg/L.