Heterogeneous photocatalytic degradation of phenol and derivatives by (BiPO₄/H₂O₂/UV and TiO₂/H₂O₂/UV) and the evaluation of plant seed toxicity tests

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• 作者：Léa Elias Mendes Carneiro Zaidan…
• 关键词：Phenol ; Effluents ; Heterogeneous Photocatalysis ; Reactor
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：34
• 期：2
• 页码：511-522
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Industrial Chemistry/Chemical Engineering; Catalysis; Materials Science, general; Biotechnology;
• 出版者：Springer US
• ISSN：1975-7220
• 卷排序：34

文摘

We examined the photocatalytic degradation of phenol from laboratory samples under UV radiation by using BiPO₄/H₂O₂ and TiO₂/H₂O₂ advanced oxidation systems. Both catalysts prepared were characterized by scanning electron microscopy, Fourier transform infrared and X-ray diffraction. Surface area tests showed about 3.46 and 31.33m2·g−1, respectively, for BiPO₄ and TiO₂. A central composite design was developed with the following variables--catalyst concentration, time and concentration of hydrogen peroxide--to optimize the degradation process. Removal rates of 99.99% for phenol degradation using BiPO₄ and TiO₂ were obtained, respectively. For mineralization of organic carbon were obtained 95,56% when using BiPO₄ and 63,40% for TiO₂, respectively. The lumped kinetic model represented satisfactorily the degradation of phenol process, using BiPO₄/H₂O₂/UV (R2=0.9977) and TiO₂/H₂O₂/UV (R2=0.9701) treatments. The toxicity tests using different seed species showed the benefits of the proposed advanced oxidation process when applied to waste waters containing these pollutants.