一株假单胞菌对苋菜红的脱色特性研究

发布时间：2018-01-07 04:16

本文关键词：一株假单胞菌对苋菜红的脱色特性研究　出处：《合肥工业大学学报(自然科学版)》2016年11期 　论文类型：期刊论文

【摘要】：文章以一株假单胞菌Pseudomonas sp.为研究对象,考察了该菌作用下碳源种类、葡萄糖质量浓度、初始pH值、染料质量浓度及时间等因素对苋菜红(AR27)偶氮染料的厌氧脱色的影响。研究结果表明生物降解在脱色过程中占主导作用,其脱色过程符合一级反应动力学规律。在单因素实验基础上,利用BoxBenhnken组合实验和响应面分析法对脱色条件进行优化。经修正,得到的最佳脱色条件为:染料质量浓度170mg/L,葡萄糖质量浓度1.6g/L,脱色培养液的初始pH值为7.2,脱色时间75h,此时该菌对偶氮染料AR27的脱色率为97.3%。
[Abstract]:Based on a strain of Pseudomonas Pseudomonas sp. as the research object, investigated the role of bacteria under different carbon sources, glucose concentration, initial pH value, dye concentration and time on amaranth (AR27) affect the anaerobic decolorization of azo dyes. The results showed that biodegradation plays a dominant role in bleaching in the process, the decolorization process accords with the first-order kinetics. On the basis of single factor experiment, using the BoxBenhnken combination experiment and response surface analysis on the decolorization conditions were optimized. The revised optimal decolorization condition was obtained: the dye concentration of 170mg/L, glucose concentration 1.6g/L, initial pH value of the liquid culture was 7.2 at this time, reaction time 75h, decolorization of azo dye AR27 the strain rate of 97.3%.

【作者单位】：合肥工业大学资源与环境工程学院;
【基金】：安徽省国土资源科技资助项目(2015-g-8)
【分类号】：X172;X703
【正文快照】： 偶氮染料是分子中具有一个或多个偶氮基(-N=N-)的芳香类化合物。由于其具有颜色范围广、色光良好等优点而成为目前商业应用最多的合成染料[1]。印染、染料等生产行业排放的废水中含有大量的偶氮染料,使得该类废水色度高且具有严重的生态环境危害性[2],其中染料废水的脱色已成

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