Thermodynamics of removing crotamiton and its transformation byproducts from water by a rotating advanced oxidation contactor with zeolite/TiO2 composite sheets

作者: Youhei Nomura , Shuji Fukahori , Taku Fujiwara

DOI: 10.1016/J.CEJ.2019.122479

关键词: ThermodynamicsContactorPhotocatalysisComposite numberDegradation (geology)LangmuirCrotamitonAdsorptionZeoliteMaterials science

摘要: Abstract A rotating advanced oxidation contactor (RAOC) equipped with zeolite/TiO2 composite sheets was used to evaluate the thermodynamics of removing crotamiton (CTM) and its transformation byproducts from water. The effect solution temperature (283–313 K) on CTM adsorption rate by zeolite, degradation TiO2, evaluated separately, enhancement synergetic increase discussed. maximum capacity for stable at a given temperature, whereas Langmuir constant increased in temperature. enhanced both CTM, more affected than adsorption. Removing through proceeded rapidly alone because degradation. activation energies were estimated be 30.4 kJ/mol adsorption, 48.7 kJ/mol degradation, 44.9 kJ/mol byproduct P219, produced via hydroxylation aromatic ring detected during photocatalysis behavior explored. As production removal P219 an These results show that is important factor affects performance RAOC treatment.

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