Reductive Biotransformation and Decolorization of Reactive Anthraquinone and Phthalocyanine Dyes

0114169 Pavlostathis本研究的目的是深入评估蒽醌和酞菁活性染料的微生物还原转化和脱色潜力。 将使用几种商业染料以及模型化合物。 目标染料将被表征，并研究其氧化还原化学。 具体的分析技术，这是目前缺乏的，将开发用于识别和量化的母染料以及其转化产品。 将评估目标染料的非生物、化学和微生物还原转化和脱色的动力学和程度。 将研究目标染料的还原脱色过程中的电子转移机制以及电子介体对脱色过程的潜在增强作用。 为了在更现实的条件下进一步评价还原性生物脱色，将使用连续流固定膜生物反应器在商业纺织品活性染浴中通常遇到的盐水条件下评价脱色过程。 批量和连续流系统中的实验测量将用于开发数学模型，用于定量描述目标染料的还原生物脱色，包括电子转移介体的潜在有益作用。***

0114169 Pavlostathis The objective of this research is the in-depth assessment of the microbial reductive transformation and decolorization potential of anthraquinone and phthalocyanine reactive dyes. Several commercial dyes as well as model compounds will be used. The target dyes will be characterized, and their redox chemistry investigated. Specific analytical techniques, which are currently lacking, will be developed for the identification and quantification of the parent dyes as well as their transformed products. The kinetics and extent of abiotic, chemical and microbial reductive transformation and decolorization of the target dyes will be assessed. Mechanistic aspects of electron transfer during the reductive decolorization of the target dyes and the use of electron mediators for the potential enhancement of the decolorization process will be investigated. To further evaluate reductive biodecolorization under more realistic conditions, the decolorization process will be evaluated using a continuous-flow, fixed-film bioreactor under saline conditions typically encountered in commercial textile reactive dyebaths. Experimental measurements in both batch and continuous-flow systems will be used to develop mathematical models for the quantitative description of the reductive biodecolorization of the target dyes, including the potential beneficial effect of electron transfer mediators. ***