Remediation of lindane contaminated soil by fluidization-like dielectric barrier discharge

Shuo Zhang; Zhen Liu; Shuran Li; Shihao Zhang; Hui Fu; Xuan Tu; Wenyi Xu; Xing Shen; Keping Yan; Ping Gan; Xiujuan Feng

doi:10.1016/j.jhazmat.2022.130164

Remediation of lindane contaminated soil by fluidization-like dielectric barrier discharge

J Hazard Mater. 2023 Feb 5;443(Pt A):130164. doi: 10.1016/j.jhazmat.2022.130164. Epub 2022 Oct 13.

Authors

Shuo Zhang¹, Zhen Liu², Shuran Li³, Shihao Zhang¹, Hui Fu¹, Xuan Tu¹, Wenyi Xu¹, Xing Shen¹, Keping Yan⁴, Ping Gan⁵, Xiujuan Feng⁶

Affiliations

¹ College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.
² College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China. Electronic address: zliu@zju.edu.cn.
³ State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China; Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China. Electronic address: lisr@zju.edu.cn.
⁴ College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030002, China.
⁵ State Environmental Protection Engineering Technology Center for Industrial Contaminated Site and Groundwater Remediation, Cecep Dadi (Hangzhou) Environmental Remediation Co., Ltd, Hangzhou 310017, China.
⁶ The School of Mines, China University of Mining and Technology, Xuzhou 221116, China.

PMID: 36308938
DOI: 10.1016/j.jhazmat.2022.130164

Abstract

This study proposed the fluidization-like dielectric barrier discharge (DBD) plasma for the remediation of lindane contaminated soil and integrated physical and chemical reaction pathway. Soil particle distribution within the reactor was simulated with Euler-Euler and Gidaspow drag models, and a bipolar pulsed power supply was applied to energize the DBD reactor after full fluidized. The effect of soil particles movement on electric features was discussed in terms of voltage waveforms and Lissajous figures. Lindane degradation was found to be related to electrics parameters and soil properties. Soil samples before and after treatment were analyzed by XRD and SEM methods. A 95.98% lindane decomposition and 0.66 mg_Lindane/h average reaction rate were obtained with 3 wt% CaO injection by pulse power drove fluidization-like DBD after 32 min treatment. Ozone was proved to play a major role during lindane degrading by plasma. The reaction potential pathway of lindane decomposition contains 4 steps, including dehydrogen, dehydrochlorination, and dechlorination, respectively.

Keywords: Dielectric barrier discharge; Fluidization; Lindane; Soil remediation.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Environmental Pollution
Environmental Restoration and Remediation*
Hexachlorocyclohexane / chemistry
Soil
Soil Pollutants* / chemistry

Substances

Hexachlorocyclohexane
Soil Pollutants
Soil