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首页> 外文期刊>Journal of Hazardous Materials >Quinone-functionalized activated carbon improves the reduction of congo red coupled to the removal of p-cresol in a UASB reactor
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Quinone-functionalized activated carbon improves the reduction of congo red coupled to the removal of p-cresol in a UASB reactor

机译：醌官能化的活性炭改善了刚果红的还原，并去除了UASB反应器中的对甲酚

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In this research was immobilized anthraquinone-2-sulfonate (AQS) on granular activated carbon (GAC) to evaluate its capacity to reduce congo red (CR) in batch reactor and continuous UASB reactors. The removal of p-cresol coupled to the reduction of CR was also evaluated. Results show that the immobilization of AQS on GAC (GAC-AQS) achieved 0.469 mmol/g, improving 2.85-times the electron-transferring capacity compared to unmodified GAC. In batch, incubations with GAC-AQS achieved a rate of decolorization of 2.64-fold higher than the observed with GAC. Decolorization efficiencies in UASB reactor with GAC-AQS were 83.9, 82, and 79.9% for periods I, II, and III; these values were 14.9-22.8% higher than the obtained by reactor with unmodified GAC using glucose as energy source. In the fourth period, glucose and p-cresol were simultaneously fed, increasing the decolorization efficiency to 87% for GAC-AQS and 72% for GAC. Finally, reactors efficiency decreased when p-cresol was the only energy source, but systems gradually recovered the decolorization efficiency up to 84% (GAC-AQS) and 71% (GAC) after 250 d. This study demonstrates the longest and efficient continuous UASB reactor operation for the reduction of electron-accepting contaminant in presence of quinone-functionalized GAC, but also using a recalcitrant pollutant as electron donor. (C) 2017 Elsevier B.V. All rights reserved.
机译：在这项研究中，将蒽醌-2-磺酸盐（AQS）固定在颗粒状活性炭（GAC）上，以评估其减少间歇式反应器和连续UASB反应器中的刚果红（CR）的能力。还评估了对甲酚的去除以及CR的​​降低。结果表明，将AQS固定在GAC上（GAC-AQS）达到0.469 mmol / g，与未修饰的GAC相比，电子转移能力提高了2.85倍。分批地，与GAC-AQS一起孵育的脱色率比GAC所观察到的高2.64倍。在第一，第二和第三阶段，使用GAC-AQS的UASB反应器的脱色效率分别为83.9％，82％和79.9％。这些值比通过使用葡萄糖作为能源的未修饰GAC的反应器获得的值高14.9-22.8％。在第四阶段，同时加入葡萄糖和对甲酚，GAC-AQS的脱色效率提高到87％，GAC的脱色效率提高到72％。最后，当对甲酚是唯一能源时，反应器效率下降，但系统在250 d后逐渐将脱色效率恢复至84％（GAC-AQS）和71％（GAC）。这项研究证明了在醌官能化的GAC存在下，最长且有效的连续UASB反应器操作可减少电子接受污染物，而且还使用顽固性污染物作为电子供体。 （C）2017 Elsevier B.V.保留所有权利。

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