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Study on inorganic oxidants assisted sonocatalytic degradation of Acid Red B in presence of nano-sized ZnO powder

机译：纳米ZnO粉体存在下无机氧化剂辅助声催化降解酸性红B的研究

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Because of the extensive use and excessive release of various dyes, the economical and efficient methods for treatment of wastewater and cleanup of dyes are needed. This study focuses on the sonocatalytic degradation of Acid Red B in aqueous solution assisted with different inorganic oxidants. The objective is to determine the potential degradation feasibility for Acid Red B and other some dyes in US/ZnO/oxidant systems. In this work, an integrated US/ZnO/oxidant system was used to degrade the Acid Red B in aqueous solution, and the concentration of Acid Red B was measured by UV-vis spectra at regular time intervals. It is found that some inorganic oxidants can effectively assist the sonocatalytic degradation of Acid Red B in the presence of nano-sized ZnO powder and the effect of oxidants changes as the order of KClO4 >KClO3 >Ca(ClO)2. Otherwise, some operational parameters such as ultrasonic irradiation time, reaction kinetics, solution pH value, oxidant kind and concentration and systematic temperature have been examined. The possible degradation mechanism of Acid Red B was also presented. It is demonstrated that the degradation of Acid Red B was very obvious in US/ZnO/oxidants (US/ZnO/KClO4, US/ZnO/KClO3 and US/ZnO/Ca(ClO)2) systems. In addition, the method of sonocatalytic degradation assisted with oxidants has many advantages such as convenience, safety, economy and high efficiency. If it can be applied extensively, the efficiency of wastewater treatment will be enhanced greatly.
机译：由于各种染料的广泛使用和过度释放，需要一种经济有效的方法来处理废水和净化染料。这项研究的重点是在不同无机氧化剂的辅助下，水溶液中酸性红B的声催化降解。目的是确定酸性红B和其他一些染料在US / ZnO /氧化剂体系中的潜在降解可行性。在这项工作中，使用集成的US / ZnO /氧化剂系统降解水溶液中的酸性红B，并通过紫外可见光谱以规则的时间间隔测量酸性红B的浓度。研究发现，在纳米ZnO粉体存在的情况下，一些无机氧化剂可以有效地促进酸性红B的声催化降解，并且氧化剂的作用随KClO4> KClO3> Ca（ClO）2的顺序变化。否则，要检查一些操作参数，例如超声照射时间，反应动力学，溶液的pH值，氧化剂的种类和浓度以及系统温度。还提出了酸性红B可能的降解机理。结果表明，酸性红B的降解在US / ZnO /氧化剂（US / ZnO / KClO4，US / ZnO / KClO3和US / ZnO / Ca（ClO）2）系统中非常明显。另外，用氧化剂辅助的声催化降解方法具有许多优点，例如方便，安全，经济和高效。如果能够广泛应用，废水处理效率将大大提高。

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