文献类型：期刊文献

英文题名：Naphthalene degradation in aqueous solution by Fe(II) activated persulfate coupled with citric acid

作者：Zeng, Guilu[1];Yang, Ruming[1];Fu, Xiaori[2];Zhou, Zhengyuan[1];Xu, Zhiqiang[1];Zhou, Zhikang[1];Qiu, Zhaofu[1];Sui, Qian[1];Lyu, Shuguang[1]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]China Construct Water & Environm CO LTD, CSCEC Mans C,13 Sanlihe Rd, Beijing 100037, Peoples R China

年份：2021

卷号：264

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20210709912655);WOS:【SCI-EXPANDED(收录号:WOS:000634707500006)】；

基金：This study was financially supported by a grant from the "One Belt and One Road" International Academic Cooperation and Exchange Program of Shanghai Science and Technology Committee (No. 19230742200) and National Natural Science Foundation of China (No. 41977164).

语种：英文

外文关键词：Naphthalene; Persulfate oxidation; Citric acid; Degradation mechanism; Groundwater remediation

摘要：More and more attention has been paid to polycyclic aromatic hydrocarbons (PAHs) contaminated sites caused by coking industries and chemical manufactures. In this study, the degradation performance of naphthalene (NAP), one of the typical pollutants in PAHs contaminated sites, in persulfate (PS) oxidation system activated by Fe(II) coupled with citric acid (CA) was investigated. The effects of PS, CA, and Fe(II) dosages on NAP were evaluated. 97.5% removal of NAP was obtained at the molar ratio of 15/5/1/1 of PS/Fe(II)/CA/NAP within 120 min, demonstrating that the addition of CA could significantly strengthen NAP degradation. The results of probe tests, EPR detection and scavenging experiments suggested that HO? played a predominant role in the degradation of NAP. The effect of surfactants including tween-80 (TW-80) and sodium dodecyl sulfate (SDS) on NAP degradation was explored. Moreover, the major degradation intermediates of NAP were determined by GC?MS and the possible degradation pathways of NAP were proposed. Finally, the effectiveness of PS/Fe(II)/CA process for NAP degradation in the actual groundwater demonstrated that this technique has a remarkable preponderance and prospect in NAP contaminated groundwater remediation.