耐盐菌GTY对偶氮染料活性艳红X-3B的脱色研究

为了选择耐盐菌GTY对偶氮染料活性艳红X-3B的最佳脱色条件,研究了不同环境条件对脱色效果的影响,结果表明耐盐菌GTY对偶氮染料活性艳红X-3B有较好的脱色效果,能够适应较宽范围的pH值以及污染物负荷,当pH值在7～9之间,活性艳红X-3B初始浓度在600mg/L以下,GTY菌液生长期在对数末期时脱色效果达到最佳状态,24h脱色率能达到90%左右。同时考察了GTY的不同初始接菌量对活性艳红X-3B脱色的影响,结果发现高的初始接菌量可以提高脱色速率,但是一定时间后,初始接菌量对最终脱色效果并无太大影响,兼顾节约成本和脱色效果选择最佳初始接菌量为5%。

Decolorization of Reactive X-3B Red Dye by Salt-tolerant Bacterium GTY

Lab experiment was conducted in order to optimize the condition of decolorizing Reactive X-3B Red dyestuff by using GTY, a strain of salt-tolerant bacterium. The findings have proved the capability of salt-tolerant GTY for decolorization of Reactive X-3B Red in a wide range of pH and dye concentrations. The best efficiency was achieved with pH 7～9 and initial dye concentrations less than 600mg/L. GTY growing in the logarithmic stage showed better per-forrnance with 90% of the decolorization rate in 24h. Higher inoculation concentration could speed up the decolorization, but had no evident improvement on final declorization efficiency. It is concluded that the best inoculation concentration was at 5% after balancing both the cost and declorization result.