Frindt Benjamin, Mattusch Jürgen, Reemtsma Thorsten, Griesbeck Axel G, Rehorek Astrid
Faculty of Applied Natural Sciences, University of Applied Sciences, Cologne, TH Köln, Kaiser-Wilhelm Allee, 51368, Leverkusen, Germany.
Helmholtz-Centre for Environmental Research, Department of Analytical Chemistry, Permoser Str. 15, 04318, Leipzig, Germany.
Environ Sci Pollut Res Int. 2017 Apr;24(12):10929-10938. doi: 10.1007/s11356-016-7075-5. Epub 2016 Jun 21.
Sulfonated reactive azo dyes, such as Reactive Orange 107, are extensively used in textile industries. Conventional wastewater treatment systems are incapable of degrading and decolorizing reactive azo dyes completely from effluents, because of their stability and resistance to aerobic biodegradation. However, reactive azo dyes are degradable under anaerobic conditions by releasing toxic aromatic amines. To clarify reaction mechanisms and the present toxicity, the hydrolyzed Reactive Orange 107 was treated in anaerobic-aerobic two-step batch experiments. Sulfonated transformation products were identified employing coupled ICP-MS and Q-TOF-MS measurements. Suspected screening lists were generated using the EAWAG-BBD. The toxicity of the reactor content was determined utilizing online measurements of the inhibition of Vibrio fischeri. The OCHEM web platform for environmental modeling was instrumental in the estimations of the environmental impact of generated transformation products.
磺化活性偶氮染料，如活性橙107，在纺织工业中被广泛使用。由于其稳定性和对好氧生物降解的抗性，传统的废水处理系统无法将活性偶氮染料从废水中完全降解和脱色。然而，活性偶氮染料在厌氧条件下可通过释放有毒芳香胺进行降解。为了阐明反应机制和当前的毒性，在厌氧-好氧两步间歇实验中处理了水解后的活性橙107。采用电感耦合等离子体质谱仪（ICP-MS）和四极杆飞行时间质谱仪（Q-TOF-MS）联用测量来鉴定磺化转化产物。使用EAWAG-BBD生成可疑筛选清单。利用在线测量费氏弧菌的抑制情况来确定反应器内容物的毒性。用于环境建模的OCHEM网络平台有助于评估生成的转化产物对环境的影响。
