文献类型：期刊文献

英文题名：Hydrocyclone-induced classification reduction and spin desorption of contaminated soil remediation with heavy metal and organics

作者：Liu, Yi[1];Ren, Jiahui[1];Ma, Kai[2];Li, Jianping[1];Fu, Pengbo[1];Lin, Kuangfei[1];Wang, Hualin[1]

机构：[1]East China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：480

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20240269803);WOS:【SCI-EXPANDED(收录号:WOS:001358649500001)】；

基金：We express our gratitude for funding received from the National Natural Science Foundation of China (52170077) and National Key Research and Development Program of China (2019YFC1803700) .

语种：英文

外文关键词：Multi-component contaminated soil; Hydrocyclone; Classification reduction; Spin desorption; Economics analysis

摘要：The correlation between soil pollutant concentration and particle size in multi-component contaminated soil containing Cadmium (Cd) and Polychlorinated biphenyls (PCBs) has been investigated. The hydrocyclone classification process has been utilized to reduce the amount of contaminated soil, followed by the application of the hydrocyclone leaching process for the remediation of residual contamination. The results of the hydrocyclone classification process revealed that smaller soil particles have higher concentrations of Cd and PCBs, consistent with the findings from the soil sieving process. For contaminated soil with Cd and PCB concentrations exceeding national standards by 1.1 and 1.7 times, a reduction efficiency of 33.9 % was achieved using five hydrocyclones in series. The spin of soil particles caused full desorption of some surface-positioned pollutants, resulting in a removal efficiency of 32.5 % for Cd and 21.3 % for PCBs in the hydrocyclone leaching process, independent of soil size. Furthermore, the addition of preferred chemicals exhibited remarkable removal efficiencies at 59.2 % for Cd and 40.1 % for PCBs in the hydrocyclone-induced integrated unit. The remediation cost of the hydrocyclone-induced coupled process was reduced by 33.3 % at an actual electrical dismantling site compared to the conventional soil remediation process.