Treatment of a non-azo dye aqueous solution by CWAO in continuous reactor using a Ni catalyst derived from hydrotalcite-like precursor

Ana Vallet; Michele Besson; Gabriel Ovejero; Juan Garcia

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Treatment of a non-azo dye aqueous solution by CWAO in continuous reactor using a Ni catalyst derived from hydrotalcite-like precursor

机译：使用衍生自类水滑石的前驱体的Ni催化剂在连续反应器中通过CWAO处理非偶氮染料水溶液

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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℃), and a decrease in dye concentration (1000-3000 ppm) or liquid flow rate (0.1-0.7mLmin~(-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 mLmin~(-1) and 180℃ under 5MPa air.

机译：被选为难生物降解的非偶氮染料模型的碱性黄11（BY11）水溶液的催化湿空气氧化（CWAO）在连续流滴流床反应器中进行，使用负载在水滑石前体上煅烧的镍在550 C下，反应温度升高（120-180℃），染料浓度（1000-3000 ppm）或液体流速（0.1-0.7mLmin〜（-1））降低，CWAO性能在30温度和浓度的变化分别为19％和19％。在开始的几个小时内观察到少量浸出后，该催化剂在65天的反应过程中被证明非常稳定。发现CWAO工艺非常有效，在5 mL空气中，在0.1 mLmin〜（-1）和180℃下，BY11转化率高达95％，TOC转化率高达85％。

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来源
《Journal of Hazardous Materials》 |2012年第15期|p.410-417|共8页
作者
Ana Vallet; Michele Besson; Gabriel Ovejero; Juan Garcia;
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作者单位

Crupo de Catalisis y Procesos de Separation (CyPS), Departamento de Ingenieria Quimica, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, Avda. Complutense s, 28040 Madrid, Spain;

IRCELYON, Institut de recherches sur la catalyse et I'environnement de Lyon, UMR5256 CNRS-Universite Lyon1, 2 Avenue Albert Einstein, F-69626 Villeurbanne Cedex, France;

Crupo de Catalisis y Procesos de Separation (CyPS), Departamento de Ingenieria Quimica, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, Avda. Complutense s, 28040 Madrid, Spain;

Crupo de Catalisis y Procesos de Separation (CyPS), Departamento de Ingenieria Quimica, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, Avda. Complutense s, 28040 Madrid, Spain;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类
关键词
catalytic wet air oxidation; trickle-bed reactor; hydrotalcite; dye removal;

机译：催化湿空气氧化;滴流床反应器;水滑石;去除染料;

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Treatment of a non-azo dye aqueous solution by CWAO in continuous reactor using a Ni catalyst derived from hydrotalcite-like precursor

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