About the Book

This book explains atmospheric plasma sterilization, air pollution control, solid waste, and water treatment technologies. A novel non-thermal plasma fluidized bed was developed for remediating phenanthrene-contaminated soil 95% of the phenanthrene was removed with an energy density of 5960 J/g soil, and a possible mechanism of the phenanthrene degradation by the plasma fluidized bed was also proposed. A gliding arc plasma reactor was used for the degradation and discoloration of the textile dyes solutions. The discoloration and degradation for mixed dyes with Fenton catalysis follow pseudo-first-order kinetics. A microplasma jet system was developed for reducing Cr(VI) in wastewater; 100% of Cr(VI) could be reduced after the 2-min discharge treatment with an energy density of 300 J/mL water. Surface sterilization using the humid air gliding arc discharge is rapid and effective. The dynamic sterilization under different air flow rates and gap distances shows that increasing air flow rates and shorter discharge gap distance could improve sterilization efficiency. A novel non-thermal plasma fluidized bed was developed for cleaning air and volatile organic compounds.

Preface

In recent years, non-thermal plasmas, including glow discharge, corona discharge, dielectric barrier discharge, gliding arc discharge, radio frequency discharge, and microdischarge, have been continuously developed and utilized in several fields, such as chemistry, biology, physics, biotechnology, medicine, and environmental science.

In Chapter 1 of this book, the types of non-thermal plasma, and the techniques of plasma science for remediating contaminated soil, wastewater degradation, metal recovery from waste solution, sterilization, and polluted air are described in detail. In Chapter 2, development of non-thermal plasma fluidized bed (PFB) for remediating phenanthrene-contaminated soil, how 95% of phenanthrene can be removed with an energy density of 5960 J/g soil, and the proposal of possible mechanisms of the phenanthrene degradation by the PFB are discussed. In Chapter 3, how a gliding arc plasma reactor can be used for the degradation and discoloration of the textile dyes solutions is explained. What type of kinetics is followed by the discoloration and degradation for mixed dyes with zerovalent iron is also explained in the same chapter. In Chapter 4, development of a microplasma jet system for reducing Cr(VI) in wastewater and how 100% of Cr(VI) could be reduced after a 2-min discharge treatment with an energy density of 300 J/mL water are elucidated. In Chapter 5, the efficiency and effectiveness of surface sterilization using humid air gliding arc discharge and how sterilization can be improved efficiently under different air flow rates and gap distances are described. In Chapter 6, development of non-thermal PFB for decomposing volatile organic compounds is elaborated.

All research works were supported by the National Natural Science Foundation of China (No. 50908237), the Natural Science Foundation of Guangdong (No. 2016A030313221), the Guangdong Public Welfare Research and Capacity Building Project (No. 2015A020215013), and the Science and Technology New Star in Zhujiang Guangzhou City (No. 201312). The authors gratefully acknowledge the work of Danyan Ma, Zhiyi Li, Mudan Xiao, and Jing Wang during their research.

Guangzhou, China

Hangzhou, China

Changming Du

Jianhua Yan