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Study of Decolorization of Active Brilliant Red X-3B by a Pseudomonas Strain

A decolorizing strain WLY of Active Brilliant Red X-3B was isolated from sludge,Qingtan wastewater treatment factory in Changzhou.The strain was Pseudomonas.sp with high decolorizing activity through biochemical identification.This paper studied effect of cultivating time,temperature,cultivating mode,pH,concentration of dye and inoculation on WLY′s decoloring capability.The results showed that decolorization rates in 24 h and 48 h were 86.29% and 93.16% respectively for 30 mg/L Active Brilliant Red X-3B to WLY.The best inoculation was 1-3 mL(OD600 was 1.2).The most preferable temperature was 35-40 ℃,pH was 7.And the decolorization rate at the condition of stationary was higher than agitation condition.The decolorization rate decreased with the concentration of dye increasing,but the decolorization rate was zero during 24 h for 500 mg/L X-3B.