Humic acid removal by gas-liquid interface discharge plasma: performance, mechanism and comparison to ozonation

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Humic acid removal by gas-liquid interface discharge plasma: performance, mechanism and comparison to ozonation
	Cui, Yanyan ; Yu, Jianwei ; Su, Ming ; Jia, Zeyu ; Liu, Tingting ; Oinuma, Gaku ; Yamauchi, Tokiko
刊名	ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
	2019
卷号	5 期号:1 页码:152-160
ISSN号	2053-1400
英文摘要	The removal of natural organic matter (NOM) is a major objective for drinking water treatment. In this study, a novel advanced oxidation process (AOP) based on plasma in gas-liquid interface discharge was investigated for removing humic acid (HA), and ozonation treatment effect was evaluated as a comparison. Several indexes including UV254, dissolved organic carbon (DOC), specific UV absorbance (SUVA), and excitation-emission matrix (EEM) fluorescence spectra were employed to characterize HA transformation. The results showed that typical species including ozone, hydrogen peroxide and HO were produced in the plasma process, which made better removal efficiency than ozonation. Especially, UV254 was removed effectively by 96.5% and 90.3% within 15 min by plasma and ozonation, while DOC was 49.2% and 41.1%, respectively. HO radicals were majorly responsible for the degradation of HA in the plasma process, which were mainly generated via reaction of in situ produced ozone and H2O2 during the discharge process. UV/vis absorbance and EEM results further showed that HA with the large molecular weight fraction was decomposed to small molecular weight fraction. This study indicates that plasma technology has a significant application prospect as a replacement for ozone in drinking water industry.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43473]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China 3.China Univ Min & Technol, Beijing 100083, Peoples R China 4.Mitsubishi Electr Corp, Adv Technol R&D Ctr, Kobe, Hyogo, Japan
推荐引用方式 GB/T 7714	Cui, Yanyan,Yu, Jianwei,Su, Ming,et al. Humic acid removal by gas-liquid interface discharge plasma: performance, mechanism and comparison to ozonation[J]. ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY,2019,5(1):152-160.
APA	Cui, Yanyan.,Yu, Jianwei.,Su, Ming.,Jia, Zeyu.,Liu, Tingting.,...&Yamauchi, Tokiko.(2019).Humic acid removal by gas-liquid interface discharge plasma: performance, mechanism and comparison to ozonation.ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY,5(1),152-160.
MLA	Cui, Yanyan,et al."Humic acid removal by gas-liquid interface discharge plasma: performance, mechanism and comparison to ozonation".ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY 5.1(2019):152-160.