DOI: 10.16597/j.cnki.issn.1002-154x.2025.01.001
降解偶氮染料的嗜热菌的分离及降解特性研究
郭相池 吴楠 李陈阳 储烨竹 郭光∗
(南京工程学院 环境工程学院, 南京 211167)
摘 要 印染废水具有产量多、危害大、温度高、难降解等特性。偶氮染料印染废水的处理备受关注。生物降解法在偶氮染料废水处理中占据优势，但高温环境下降解偶氮染料废水仍有挑战性。本研究分离出了一种在75℃高温下仍可以保持较高脱色率的单菌Novibacillus，并研究了其降解特性。在75℃，pH=7以及5%盐浓度的情况下，该菌可以在24 h内使降解率达到80%。同时此菌株可以耐受不同质量浓度的酸性橙7，在特定的情况下具有一定的应用潜力。该研究结果可为偶氮染料的降解提供基础。
关键词 印染废水 酸性橙7 脱色
Isolation of Thermophilic Bacterium and Their Decolorization Characteristics of Azo Dyes
GUO Xiangchi WU Nan LI Chenyang CHU Yezhu GUO Guang∗
(College of Environmental Engineering, Nanjing Institute of Technology, Nanjing 211167, China)
Abstract The printing and dyeing wastewater is characterized by high production volume, great harm, high temperature, and difficult to degradation. The treatment of azo dye wastewater has attracted much attention. Biological degradation methods have advantages in azo dye wastewater treatment, but degrading azo dye wastewater under high-temperature conditions remains a challenge. Therefore, in this study, a bacterium Novibacillus which can maintain a high decolorization rate at 75℃ was isolated, and its degradation characteristics were studied. This bacterium can achieve a degradation rate of 80% within 24 hours at 75℃, pH=7 and 5% salinity. In addition, this strain can tolerate different concentrations of Acid Orange 7 and has certain application potential under specific conditions. The research results can provide a research basis for the degradation of azo dyes.
Keywords printing and dyeing wastewater acid orange 7 decolorization