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首页> 外文期刊>Chinese science bulletin >Decolorization of reactive brilliant red K-2BP with the white-rot fungi under non-sterile conditions
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Decolorization of reactive brilliant red K-2BP with the white-rot fungi under non-sterile conditions

机译：非灭菌条件下白腐菌对活性艳红K-2BP的脱色

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In recent years, many researches indicate that white rot fungus is a promising microbe in wastewater treatment. The basidiomycete Phanerochaete chrysosporium in white rot fungi is the most extensively studied and discussed. The extracellular ligninolytic enzymes of white rot fungi have the ability to degrade a wide spectrum of recalcitrant organo-pollutants such as chlorinated phenols and various types of synthetic dyes because of their nonspecific characteristics. And some significant mineralization (20 percent-48 percent) was observed during degradation of azo dyes.However, almost all the studies, both domestic and international, using white rot fungi for dye wastewater treatment have remained at the laboratory level. There is no case of wide scale application. A very important reason is bacterial contamination in reactor under non-sterile conditions. Once bacteria grow in reactor, they compete with white rot fungi for nutrients. Because the reproduction rate of bacteria is faster than fungi, bacteria will gradually dominate. Then the white rot fungi cease to grow for lack of nutrients. Thereafter, it stops secreting extracellular ligninolytic enzymes, making the whole treatment system lose the function of degrading dyes. If the reactor, culture media, carrier and even wastewater are all sterilized, obviously, it will greatly increase the operational costs of the treatment system. Therefore, how to avoid bacterial attack is crucial for the use of white rot fungi in dye wastewater treatment. A few of recent studies have dealt with the bacterial contamination under nonsterile conditions
机译：近年来，许多研究表明，白腐真菌是一种有希望的废水处理微生物。白腐真菌中的担子菌Phanerochaete chrysosporium进行了最广泛的研究和讨论。白腐真菌的细胞外木质素分解酶由于其非特异性特性，具有降解多种顽固性有机污染物（如氯酚和各种类型的合成染料）的能力。在偶氮染料降解过程中观察到一些显着的矿化作用（20％-48％）。然而，国内外几乎所有使用白腐真菌处理染料废水的研究都还处于实验室水平。没有大规模应用的情况。一个非常重要的原因是在非无菌条件下反应器中的细菌污染。一旦细菌在反应堆中生长，它们就会与白腐真菌争夺营养。因为细菌的繁殖速度比真菌快，所以细菌将逐渐占主导地位。然后，由于缺乏营养，白腐真菌停止生长。此后，它停止分泌细胞外木质素分解酶，使整个处理系统失去降解染料的功能。如果将反应器，培养基，载体甚至废水全部灭菌，显然会大大增加处理系统的运行成本。因此，如何避免细菌侵袭对于在染料废水处理中使用白腐真菌至关重要。最近的一些研究涉及非无菌条件下的细菌污染

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