染料脱色菌的筛选及对活性艳红X-3B的脱色研究

从广州某印染厂生化处理池的活性污泥中筛选到三株对活性艳红X-3B具有高效脱色作用的真菌,其中菌株HMX-3的脱色能力最强。考察了培养时间、温度、培养方式、pH值以及染料浓度对HMX-3脱色能力的影响。结果表明,菌株HMX-3对150mg/L X-3B的24h脱色率达65.8%,经60h可使其完全脱色;HMX-3对活性艳红X-3B脱色的最适温度为25℃~35℃,最佳pH值为6~8,且振荡培养较静置培养条件下的脱色率高;随染料浓度的增加,脱色率降低,但对于400mg/L的X-3B在72h时的脱色率可达86.7%。

Screening of Decolorizing Fungi and Decolorizing Research for Active Brilliant Red X-3B

Three strains of fungi,with perfect decolorizing capability for Active Brilliant Red X-3B,were screened out from the activated sludge in dyeing wastewater treatment pond.Among them,the strain HMX-3 was demonstrated with best decoloring capability.This paper studied effect of cultivating time,temperature,cultivating mode,pH value and concentration of dye on decoloring capability.The results showed that the decolorization rate was 65.8% during 24 hours for Active Brilliant Red X-3B,and X-3B could be decolored completely during 60 hours.The most preferable temperature of HMX-3 to adsorb Active Brilliant Red X-3B was 25~35℃,and pH value was 6~8.And the decolorization rate at the condition of agitation was higher than stationary condition.The decolorization rate decreased with the concentration of the dye raising.But the decoloring rate was over 86.7% during 72 hours for 400mg/L~(-1)X-3B.