Grupo de Catálisis y Procesos de Separación (CyPS), Departamento de Ingeniería Química, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Madrid, Spain.
J Hazard Mater. 2012 Aug 15;227-228:410-7. doi: 10.1016/j.jhazmat.2012.05.081. Epub 2012 May 31.
Catalytic wet air oxidation (CWAO) of a Basic Yellow 11 (BY11) aqueous solution, chosen as a model of a hardly biodegradable non-azo dye was carried out in a continuous-flow trickle-bed reactor, using nickel supported over hydrotalcite precursor calcined at 550°C. An increase in the reaction temperature (120-180°C), and a decrease in dye concentration (1000-3000 ppm) or liquid flow rate (0.1-0.7 mL min(-1)) enhanced the CWAO performance in a 30 and 19% for the variation of the temperature and concentration respectively. After a small leaching observed within the first hours, the catalyst proved to be very stable during the 65-day reaction. The CWAO process was found to be very efficient, achieving BY11 conversion up to 95% and TOC conversion up to 85% at 0.1 mL min(-1) and 180°C under 5 MPa air.
采用负载于水滑石前体（在 550°C 下煅烧）上的镍催化剂，在连续滴流床反应器中进行了碱性黄 11（BY11）水溶液（一种难生物降解的偶氮染料模型）的催化湿式空气氧化（CWAO）。反应温度（120-180°C）的升高，以及染料浓度（1000-3000ppm）或液体流速（0.1-0.7mL min(-1))的降低，分别使 CWAO 性能提高了 30%和 19%。在最初几个小时内观察到少量浸出后，催化剂在 65 天的反应中表现出非常高的稳定性。该 CWAO 工艺非常有效，在 0.1 mL min(-1)和 5 MPa 空气下 180°C 时，达到了高达 95%的 BY11 转化率和高达 85%的 TOC 转化率。
