黄孢原毛平革菌反复脱色模拟染料废水的试验研究

EXPERIMENTAL STUDIES ON REPEATED DECOLORIZATION OF REACTIVE RED K-2BP BY PHANEROCHAETE CHRYSOSPORIUM

研究了白腐真菌黄孢原毛平革菌在35℃、150r/min条件下培养3d后,培养基类型、染料浓度以及反复脱色次数对其脱色的影响。玉米芯浸出液是首选的可替代营养源的物质 ,培养3d的黄孢原毛平革菌6h脱色率即达92 %。黄孢原毛平革菌能够在短时间(6h)基本脱色较高浓度 (40mg/L ,60mg/L)的活性艳红K -2BP模拟染料废水 ,对于低浓度 (10mg/L ,20mg/L)脱色作用则比较缓慢 ,浓度超过150mg/L即显示出对菌的毒性作用。玉米芯浸出液培养3d的菌可以重复脱色模拟废水6次以上 ,每批脱色率均在82%以上 。

In this paper,the influence of some factors on the biodegradation and decolorization perˉformance of Phanerochaete chrysosporium(one kind of white rot fungi)which is already incubated in a circumstance of35℃,150r/min,such as culture medium types,dyestuff concentration and number of times the repeated-batch operation is carried out,is studied.The lixivium of corn residues is found to be the most preferred substitute for nutrition,in which the decolorization efficiency in6hours can reach92%after3days'incubation.The dyestuff of higher concentrations(40mg/L,60mg/L)can be almost fully decolorized in short time(6hours),while that of lower concentration(10mg/L,20mg/L)act much slower.The dyestuff has toxic effect on the fungi when concentration goes beyond150mg/L.The fungi incubated in the lixivium of corn residues can at least decolorize6batches of dyestuff.For each batch the decolorization efficiency is more than82%,however,the sedimentation rate of mycelial pellets is getting worse.