Multi-air-pollutant removal by using an integrated system: Key parameters assessment and reaction mechanism

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境纳米材料实验室

	Multi-air-pollutant removal by using an integrated system: Key parameters assessment and reaction mechanism
	Hao, Runlong; Mao, Xingzhou; Ma, Zhao; Qian, Zhen; Luo, Yichen; Zhao, Xu; Yuan, Bo
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-03-25
卷号	710 页码:1-11
关键词	SO2 NO Hg-0 H2O2/Na2S2O8 Dual absorption system
ISSN号	0048-9697
英文摘要	How to cost-efficiently and cooperatively remove SO2, NO and Hg-0 in flue gas is a hot topic in the field of air pollution control. This work developed an integrated system that consists of a dual-absorption system and a vapor oxidation system, in which Na2CO3 and H2O2/Na2S2O8 were used as the absorbent and oxidant. The results indicated that the efficiencies of SO2 removal and NO conversion reached 99.5% and 93% respectively. Rising the vaporization temperature and decreasing the pH of H2O2/Na2S2O8 could facilitate the NO conversion. The spent Na2CO3 after desulfurization was demonstrated to be a good absorbent for NO2 removal. The best conditions of pH and temperatures for the dual-absorber were determined as 10/8 and 60/60 degrees C, respectively. The presence of 1000 mg/m(3) SO2 and 300 mg/m(3) NO favored the Hg-0 removal. TMT-15, an organic sulfur compound, was demonstrated to be useful in retaining Hg2+, with an efficiency of 92%. According to the analyses of electron spin resonance (ESR), ion chromatography (IC), atom fluorescence spectrometry (AFS) and X-ray photoelectron spectroscopy (XPS), SO4-center dot and HO center dot were proved to be the key radicals, and the existing forms of N- and Hg- species in the product were identified as NaNO2/NaNO3 and HgCl2. (C) 2019 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44880]
专题	生态环境研究中心_环境纳米材料实验室
推荐引用方式 GB/T 7714	Hao, Runlong,Mao, Xingzhou,Ma, Zhao,et al. Multi-air-pollutant removal by using an integrated system: Key parameters assessment and reaction mechanism[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,710:1-11.
APA	Hao, Runlong.,Mao, Xingzhou.,Ma, Zhao.,Qian, Zhen.,Luo, Yichen.,...&Yuan, Bo.(2020).Multi-air-pollutant removal by using an integrated system: Key parameters assessment and reaction mechanism.SCIENCE OF THE TOTAL ENVIRONMENT,710,1-11.
MLA	Hao, Runlong,et al."Multi-air-pollutant removal by using an integrated system: Key parameters assessment and reaction mechanism".SCIENCE OF THE TOTAL ENVIRONMENT 710(2020):1-11.