Degradation of 2,4-dinitrophenol by combining sonolysis and different additives
Degradation of 2,4-dinitrophenol by combining sonolysis and different additives
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DOI：
10.1016/j.jhazmat.2008.01.056
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发表时间：
2008-10-01
影响因子：
13.6
通讯作者：
Zheng, Youfei
中科院分区：
文献类型：
--
作者：
Guo, Zhaobing;Feng, Ruo;Zheng, Youfei
基于不同添加剂对2.4-二硝基苯酚（DNP）水溶液超声降解的影响，提出了DNP在不同过程中的降解机理和反应动力学。结果表明，CuO、CCl_4、O-3、NaCl、KI等添加剂对催化剂的催化性能有一定的影响。有利于DNP的声化学降解。相反的，我不知道。Na 2CO 3对DNP的降解有抑制作用，表明（OH）-O-中心点自由基氧化在超声波去除DNP中起重要作用。US/CuO/H_2O_2、US/CCl_4和US/O-_3体系中DNP降解率的显著提高也与反应过程中形成的中间产物有关。例如HO 2中心点/O-中心点（2-）基团、含氯基团和HCIO。此外，DNP的超声去除被观察到表现为伪一级动力学在本工作中测试的不同的实验条件下。(C)2008 Elsevier B. V.保留所有权利。
Based on the effects of various additives on ultrasonic degradation of 2.4-dinitrophenol (DNP) in aqueous solution, the degradation mechanisms and reaction kinetics of DNP in different processes were proposed. The results showed that some additives, such as CuO, CCl4, O-3, NaCl and KI. were favorable for DNP sonochemical degradation. On the contrary. DNP degradation efficiency was restrained by Na2CO3, indicating that (OH)-O-center dot radicals oxidation played an important role in DNP ultrasonic removal. The significant increases in DNP degradation in US/CuO/H2O2, US/CCl4 and US/O-3 systems were also related to the intermediates formed during the reactions. such as HO2 center dot/O-center dot(2-) radicals, chlorine-containing radicals and HCIO. In addition, DNP ultrasonic removal was observed to behave as pseudo-first-order kinetics under different experimental conditions tested in the present work. (C) 2008 Elsevier B.V. All rights reserved.