Green SO2 conversion from flue gas by pH variation

doi:10.1007/s10098-015-1034-6

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 水污染过程与治理研究中心

	Green SO2 conversion from flue gas by pH variation
	Li, Liangjun 1; Guo, Jianwei 1; Yang, Zhe 1; Zheng, Linze 1; Liu, Hong2
刊名	CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
	2016-02-01
卷号	18 期号:2 页码:593-600
关键词	pH variation Conversion of SO2 Efficiency of SO2 Flue gas
ISSN号	1618-954X
DOI	10.1007/s10098-015-1034-6
通讯作者	Guo, JW (reprint author), Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China.
英文摘要	Emissions reduction or conversion by clean technologies has always been a mission for environmental protection and sustainable development. A green, electrochemically driven conversion of SO2 to NaHSO4 from flue gas by pH variation was conducted. Experiments were carried out to investigate some factors affecting the conversion process, such as O-2 function in flue gas, selected initial pH (pH(0)) of solution, and CO2 effects of high concentration. Experimental results revealed that (i) O-2 was essential for SO2 absorption, since the pH of solution was decreased more effectively than that of flue gas without O-2. The lowest pH of absorption solution with pouring O-2 was about 3.2, which was benefit to formatting HSO3 (-) but hindering absorption of CO2. Meanwhile, O-2 from flue gas accelerated the adsorption of SO2 for its oxidability to change HSO3 (-) and SO3 (2-) ions into SO4 (2-). (ii) At the conditions of different pH(0), the minimum absorption efficiency of SO2 was 89.3 %, corresponding to pH(0) 5.0 and 7.0, while maximum value was 100.1 % corresponding to pH(0) 6.0, which meant pH(0) 6.0 was more appropriate for SO2 conversion by electrochemistry under the experimental pH(0) range. (iii) The absorption efficiency of CO2 was at a very low level under conditions of pH(0) 5.0, 6.0, and 7.0, whose value of minimum and maximum was 0.07 and 0.19 %. The result showed that high concentration of CO2 from flue gas had little affection on desulfurization under the experimental pH(0) range, which enable to infer that byproduct of NaHSO4 is pure enough.
资助项目	Beijing Sinen En-Tech Co., Ltd. ; National Natural Science Foundation of China[21476051] ; Science and Technology Project of Guangdong Province[2013B010403028]
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000370819500021
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/2267]
专题	水污染过程与治理研究中心
通讯作者	Guo, Jianwei
作者单位	1.Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Li, Liangjun,Guo, Jianwei,Yang, Zhe,et al. Green SO2 conversion from flue gas by pH variation[J]. CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY,2016,18(2):593-600.
APA	Li, Liangjun,Guo, Jianwei,Yang, Zhe,Zheng, Linze,&Liu, Hong.(2016).Green SO2 conversion from flue gas by pH variation.CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY,18(2),593-600.
MLA	Li, Liangjun,et al."Green SO2 conversion from flue gas by pH variation".CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY 18.2(2016):593-600.