Water Sci Technol. 2019 Nov;80(10):1910-1918. doi: 10.2166/wst.2020.010.
Most currently employed textile effluent decolourization methods use physical and chemical processes where dyes do not get degraded instead concentrated or transferred into a solid phase. Therefore, further treatment processes are required to destroy dyes from the environment. In contrast, biological decolourization may result in degradation of the dye structure due to microbial activities and hence biological processes can be considered environmentally friendly. In the present study, bacterial strains with dye decolourization potential were isolated from the natural environment and their ability to decolourize four different reactive textile dyes was studied individually and in a bacterial consortium. The developed bacterial consortium composed with Proteus mirabilis, Morganella morganii and Enterobacter cloacae indicated more than 90% color removals for all four dyes and optimum decolourization of the dye mixture was observed at 40 °C and pH 7. The developed bacterial consortium decolourized 60% of dyes in textile industry effluent at 35 °C and pH 7 showing their ability to endure in highly complex and toxic environments and application in textile industry wastewaters.
大多数目前用于纺织废水脱色的方法使用物理和化学过程，其中染料不会被降解，而是被浓缩或转移到固相。因此，需要进一步的处理过程来从环境中破坏染料。相比之下，由于微生物的活动，生物脱色可能导致染料结构的降解，因此可以认为生物过程是环保的。在本研究中，从自然环境中分离出具有染料脱色能力的细菌菌株，并单独和在细菌混合体中研究它们对四种不同的活性纺织染料的脱色能力。由奇异变形杆菌、摩氏摩根菌和阴沟肠杆菌组成的开发中的细菌混合体对所有四种染料的去除率均超过 90%，并且在 40°C 和 pH 7 下观察到染料混合物的最佳脱色效果。开发中的细菌混合体在 35°C 和 pH 7 下可使纺织工业废水中的 60%的染料脱色，表明其能够在高度复杂和有毒的环境中生存，并应用于纺织工业废水中。
