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首页> 外文期刊>Journal of Environmental Science and Technology >Biodecolorization and Biodegradation of Textile Dyes by the Newly Isolated Saline-pH Tolerant Fungus Pestalotiopsis sp.
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Biodecolorization and Biodegradation of Textile Dyes by the Newly Isolated Saline-pH Tolerant Fungus Pestalotiopsis sp.

机译：新分离的耐盐碱pH的真菌Pestalotiopsis sp。对纺织品染料的生物脱色和生物降解。

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Wastewater from textile industry effluents contains high amounts of colored and toxic compounds that can interrupt aquatic life systems when they are discharged to the environment without being treated. The physicochemical characteristics of effluents typically have a wide range of pHs and salinities, which are difficult for conventional techniques to remove. In addition, a limited number of microorganisms with the ability to grow and produce degradative enzyme systems can survive under those condition. Therefore, identifying microorganisms that are capable of decolorizing and degrading textile dyes under various pHs and salinities is needed. Among the fifteen strains tested in this study, Pestalotiopsis sp. NG007 exhibited the strongest ability to grow and decolorize Reactive Red 4 under saline conditions at pH 8. The ability of this strain to decolorize three textile dyes: Reactive Green 19, Reactive Orange 64 and Reactive Red 4, was investigated in a liquid medium and bioreactor system using immobilized mycelia. The fungus displayed a high decolorization capacity (20-98%) over 3 days in a wide range of pHs (pH 3-12) and salinities (0-10% w/v). In the bioreactor system, immobilized mycelia of the strain exhibited the ability to decolorize textile dyes by both adsorption (6-53%) and degradation (34-41%) mechanisms. This study demonstrated that Pestalotiopsis sp. has the potential to decolorize textile dye effluents containing a wide range of pHs and salinities.
机译：纺织工业废水中的废水中含有大量有色和有毒的化合物，当这些废水未经处理就排放到环境中时会中断水生生物系统。流出物的物理化学特征通常具有宽范围的pH和盐度，这是常规技术难以去除的。此外，有限数量的具有生长和产生降解酶系统能力的微生物可以在那些条件下存活。因此，需要鉴定在各种pH和盐度下能够使纺织品染料脱色和降解的微生物。在这项研究中测试的十五个菌株中，Pestalotiopsis sp.。 NG007在pH为8的生理盐水条件下表现出最强的生长和脱色活性红4的能力。在液体培养基和生物反应器中研究了该菌株对三种纺织染料脱色的能力：活性绿19，活性橙64和活性红4。系统使用固定的菌丝体。在宽范围的pH值（pH 3-12）和盐度（0-10％w / v）下，真菌在3天内显示出高脱色能力（20-98％）。在生物反应器系统中，菌株的固定菌丝体具有通过吸附（6-53％）和降解（34-41％）机理使纺织品染料脱色的能力。这项研究表明，Pestalotiopsis sp。有可能使含有多种pH和盐度的纺织染料废水脱色。

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