Guo Jianbo, Zhou Jiti, Wang Dong, Tian Cunping, Wang Ping, Uddin M Salah
School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian, 116023, PR China.
Biodegradation. 2008 Feb;19(1):15-9. doi: 10.1007/s10532-007-9110-1. Epub 2007 Mar 9.
Halomonas sp strain GTW was newly isolated from coastal sediments contaminated by chemical wastewater and was identified to be a member of the genus Halomonas by 16S rDNA sequence analysis and physical and biochemical tests. The optimal decolorization conditions were as follows: temperature 30 degrees C, pH 6.5.0-8.5, NaCl 10-20% (w/v) and the optimal carbon source was yeast exact. The results of experiments demonstrated that the bacteria could decolorize different azo dyes under high salt concentration conditions, and the decolorization rate of five tested azo dyes could be above 90% in 24 h. The exploitation of the salt-tolerant bacteria in the bio-treatment system would be a great improvement of conventional biological treatment systems and the bio-treatment concept.
嗜盐单胞菌属菌株GTW是从受化学废水污染的沿海沉积物中新分离出来的，通过16S rDNA序列分析以及物理和生化测试被鉴定为嗜盐单胞菌属的一员。最佳脱色条件如下：温度30℃，pH值6.5 - 8.5，NaCl浓度为10 - 20%（w/v），最佳碳源是酵母浸出物。实验结果表明，该细菌能够在高盐浓度条件下使不同的偶氮染料脱色，在24小时内，五种受试偶氮染料的脱色率可达90%以上。在生物处理系统中利用耐盐细菌将极大地改进传统生物处理系统和生物处理理念。
