Ultrasonic irradiation of carbofuran: decomposition kinetics and reactor characterization.
Ultrasonic irradiation of carbofuran: decomposition kinetics and reactor characterization.
复制标题
克百威的超声波辐照：分解动力学和反应器表征。
DOI：
10.1016/s0043-1354(00)00398-5
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发表时间：
2001
期刊：
影响因子：
12.8
通讯作者：
Ulrike Pfalzer
中科院分区：
文献类型：
--
作者：
Inez Hua;Ulrike Pfalzer
本文报道了在平行板近场声处理器（NAP）中呋喃丹（2，3-二氢-2，2-二甲基-7-苯并呋喃基，C12 H15 NO3）的声化学分解。超声辐照频率为16和20 kHz，总功率为1800 W。随着功率密度的增加（1.65WmL−1-5.55WmL−1）和初始浓度的降低（25μM对130μM），克百威的分解得到增强。溶液中溶解气体的性质也影响观察到的分解速率。NAP反应器的流体动力学行为的特点是通过计算雷诺数和进行示踪剂研究与保守的示踪剂，氯化钠（NaCl）。计算的分散系数表明在反应器操作期间的中间分散量。
The sonochemical decomposition of carbofuran (2,3-dihydro-2,2-dimethyl-7-benzofuranyl, C12H15NO3) in a parallel plate near-field acoustical processor (NAP) is reported. Ultrasonic irradiation was performed at 16 and 20kHz, under a total applied power of 1800W. Carbofuran decomposition was enhanced with increasing power densities (1.65WmL−1–5.55WmL−1), and with decreasing initial concentrations (25μM vs. 130μM). The nature of the dissolved gas in solution also influenced the observed decomposition rate. The hydrodynamic behavior of the NAP reactor was characterized by calculating the Reynolds numbers and by performing tracer studies with a conservative tracer, sodium chloride (NaCl). The calculated dispersion coefficients indicate an intermediate amount of dispersion during operation of the reactor.