Investigating the potential of using acoustic frequency on the degradation of linear alkylbenzen sulfonates from aqueous solution  

作　　者：DEHGHANI Mohammad Hadi MAHVI Amir Hossein NAJAFPOOR Ali Asghar AZAM Kamal 

机构地区：[1]Department of Environmental Health Engineering,School of Public Health,Center for Environmental Research,Medical Sciences/University of Tehran,Tehran,I.R. Iran [2]Department of Environmental Health,School of Public Health,Mashhad University of Medical Sciences,Mashhad,I.R. Iran [3]Department of Epidemiology and Biostatistics,School of Public Health,Medical Sciences/University of Tehran,Tehran,I.R. Iran

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2007年第9期1462-1468,共7页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：Project (No. 85-01-46-3401) supported by the Medical Sciences/ University of Tehran, I.R. Iran

摘　　要：The effectiveness of using acoustical （sonochemical） reactor for degradation of linear alkylbenzen sulfonate （LAS） from aqueous solution was investigated. LASs are anionic surfactants, found in relatively high amounts in domestic and industrial wastewaters. In this study, experiments on LAS solution were performed using methylene blue active substances （MBAS） method. The effectiveness of acoustical processor reactor for LAS degradation is evaluated with emphasis on the effect of treatment time and initial LAS concentration. Experiments were performed at initial concentrations of 0.2, 0.5, 0.8 and 1.0 mg/L, acoustic frequency of 130 kHz, applied power of 500 W and temperature of 18℃-20℃. At the conditions involved, LAS degradation was found to increase with increasing sonochemical time. In addition, as the concentration increased, the LAS degradation rate decreased in the acoustical processor reactor.The effectiveness of using acoustical (sonochemical) reactor for degradation of linear alkylbenzen sulfonate (LAS) from aqueous solution was investigated. LASs are anionic surfactants,found in relatively high amounts in domestic and industrial wastewaters. In this study,experiments on LAS solution were performed using methylene blue active substances (MBAS) method. The effectiveness of acoustical processor reactor for LAS degradation is evaluated with emphasis on the effect of treatment time and initial LAS concentration. Experiments were performed at initial concentrations of 0.2,0.5,0.8 and 1.0 mg/L,acoustic fre-quency of 130 kHz,applied power of 500 W and temperature of 18 °C～20 °C. At the conditions involved,LAS degradation was found to increase with increasing sonochemical time. In addition,as the concentration increased,the LAS degradation rate de-creased in the acoustical processor reactor.

关 键 词：Acoustical reactor Linear alkylbenzen sulfonate （LAS） Acoustic frequency Treatment time Power 

分 类 号：X703[环境科学与工程—环境工程]