| Dyes are being increasingly used in the textile and tannert. Wastewater is complex structure, high concentration, color large, refractory and toxic substances content, bringing great pressure and high pollution for water environment in China.Hence the degradation studies of dyes wastewater is benefit to environment protection and people's health. White rot fungi have non-specific ability, thoroughness, broad spectrum property and suitable to solid or liquid medium cultivation to degrade pollutants,which is able to thorough biodegrade dyes. In this paper white rot fungi were used to degrade Basic Violet 3,Congo red and Phenazinium.The effect of independent variable such as temperature;agitation,pH,density,biomass production, the optimal temperature and the temperature on the kinetics of decolorization reaction rate constant.The main research results of this paper include:1. Basic Violet 3 was chosen as a model of triphenylmethane dye using the white rot fungi was degradation. At temerature 30℃,agitation 120r/min,PH=7,biomass production 7g ,degradation72h the higher color reduction of Basic Violet 3 by white rot fungi recorded the lowest value of 86.7%.2. Congo red was degradation using the white rot fungi at temerature 37℃, agitation 120r/min,pH=5, density 100mg/L,biomass production 5g,degradation72h. the maximum decolorization is 99.8%. White rot fungi have stronger degradation for Congo red.3. Phenazinium is density 100mg/L,The maximum degradation occurred at temerature 37℃,agitation 120r/min,pH=5,biomass production 6g,decolorization was achieved in 72h,the maximum decolorization is 65.5%.4.The biodecolorization kinetics of Basic Violet 3, Congo red ,Phenazinium is first order,the degradation rate coefficient constant increases with temperature increases and then decreases,the degradation rate coefficient are k Basic Violet 3=4.05×10-6s-1, kCongo red=9.99×10-6s-1,kPhenazinium=2.11×10-6s-1。... |
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