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首页> 外文会议>European Symposium on Environmental Biotechnology(ESEB 2004); 20040425-20040428; Oostende; BE >The effect of a quinone-based redox mediator on the decolourisation of textile wastewaters: a comparative study between mesophilic (30℃) and thermophilic (55℃) anaerobic treatments by granular sludge
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The effect of a quinone-based redox mediator on the decolourisation of textile wastewaters: a comparative study between mesophilic (30℃) and thermophilic (55℃) anaerobic treatments by granular sludge

机译：醌类氧化还原介质对纺织废水脱色的影响：颗粒污泥中温（30℃）和嗜热（55℃）厌氧处理的比较研究

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摘要

A comparative study between mesophilic (30℃) and thermophilic (55℃) anaerobic treatments by granular sludge was performed on the decolourisation of a reactive textile wastewater, both in presence and absence of the redox mediator anthraquinone-2-sulfonate (AQS). The investigations evidenced the advantage of colour removal at 55℃ compared with 30℃. In the presence of anthraquinone-2,6-disulfonate (AQDS), the generation of the hydroquinone form AH_2QDS, i.e. the reduced form of AQDS, was greatly accelerated at 55℃ compared in comparison with 30℃. Furthermore, no lag-phase was observed at 55℃. Based on the present results we postulate that the production/transfer of reducing equivalents is the process rate-limiting step, which was accelerated by the temperature increase. It is conclusively stated that 55℃ is a much better temperature for colour removal than 30℃, which on the one hand can be attributed to the faster production/transfer of reducing equivalents, but also due to the decrease of activation energy requirements.
机译：在存在和不存在氧化还原介体蒽醌-2-磺酸盐（AQS）的情况下，对反应性纺织废水的脱色进行了颗粒污泥的嗜温（30℃）和嗜热（55℃）厌氧处理的对比研究。研究表明，与30℃相比，在55℃脱色具有优势。在存在蒽醌-2，6-二磺酸盐（AQDS）的情况下，与30℃相比，在55℃下大大加快了AH_2QDS对苯二酚的生成，即AQDS的还原形式。此外，在55℃下没有观察到滞后相。根据目前的结果，我们假定还原当量的生产/转移是过程速率限制步骤，该过程因温度升高而加速。结论是55℃比30℃要好得多，这一方面可以归因于还原当量的更快生产/转移，也可以归因于活化能需求的减少。

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