白腐真菌的培养及其在染料污水脱色中的应用

Culture of white rot fungus and its application in the decolorization of dye effluent

随着纺织和印染业的发展,染料的种类日益增多,结构愈加复杂,因而降解难度也越来越大.这些染料在生产及应用中随废水排放到环境中对环境和生态造成十分严重的污染,因此研究染料废水的处理具有十分重要的意义.白腐真菌具有非专一性、非水解性、细胞外性及适用于固、液基质等特点,被广泛的应用于降解染料废水.传统工艺中,对菌株进行切割后加入到染料废水中,容易引起白腐菌的物理损伤.本文采用孢子接种的方式预先将白腐菌接种,避免了物理切割带来的损伤.成功培养了白腐真菌并选取活性艳红X-3B为模型污染物,考察了白腐真菌对染料脱色的效果.结果表明白腐真菌对活性艳红的降解效果十分明显,仅处理3天降解率就达到65.82%.

With the development of textile and dyeing industry, the types of dyes have been increasing and the structures of dyes have become more complicated, so it is more difficult to degrade the dyes in water treatment. These dyes with waste water is dis- charged in the environment during its production and application and pose threat to the environment. Therefore, the waste water treatment technology is very important. Due to the non-specificity, non-hydrolysis, extracellular property, and suitability for both solid and liquid matrix,white rot fungus is widely used in the degradation of dye effluents. In the traditional process ,the strain was cut and then put into the dye waste water, where the cutting would damage the physical structure of white rot fungus. Herein, the spore inoculation was adopted to avoid the physical damage of cutting. White rot fungi were cultured to de- colorize reactive brilliant red X-3B. The results showed that the degradation of reactive brilliant red by white rot fungus was very efficient. After 3 d degradation, the decolorization efficiency reached 65.82%.