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Changes of total organic carbon and kinetics of ultrasonic-assisted coal water slurry electrolysis in NaOH system
Alternative TitleFuel Process. Technol.
Gong, Xuzhong1; Wu, Ying1; Wang, Zhi1; Wang, Mingyong1; Guo, Zhancheng1,2
2014-03-01
Source PublicationFUEL PROCESSING TECHNOLOGY
ISSN0378-3820
Volume119Issue:1Pages:166-172
AbstractCoal water slurry (CWS) electrolysis not only improved efficiency of water electrolysis for hydrogen, but also removed sulfur and mineral matters in coal. Fortunately, it may be a potential method which obtained directly organic compounds from coal. However, both the stability and mass transfer of coal particle were very poor during CWS electrolysis. As we known, ultrasonic wave can improve the stability for CWS and mass transfer strength of coal particle. In this paper, ultrasonic-assisted CWS electrolysis was carried out in NaOH solution. Results showed that the total organic carbon (TOC) concentration for CWS electrolysis increased. According to the results from kinetics study, it was not difficult to find that the chemical reaction is the controlling-step for CWS electrolysis. And the apparent activation energy (AAE) changed from 28.37 to 27.61 kj mol(-1) with ultrasonic addition. The slight change in the AAE suggested that the ultrasonic improved the mass transfer of coal particle only in electrolyte, and did not change reaction path. Additionally, TOC concentration decreased with the increase in mineral matter content, indicating that the mineral matters inhibited the organic structure electrolysis. (C) 2013 Elsevier B.V. All rights reserved.; Coal water slurry (CWS) electrolysis not only improved efficiency of water electrolysis for hydrogen, but also removed sulfur and mineral matters in coal. Fortunately, it may be a potential method which obtained directly organic compounds from coal. However, both the stability and mass transfer of coal particle were very poor during CWS electrolysis. As we known, ultrasonic wave can improve the stability for CWS and mass transfer strength of coal particle. In this paper, ultrasonic-assisted CWS electrolysis was carried out in NaOH solution. Results showed that the total organic carbon (TOC) concentration for CWS electrolysis increased. According to the results from kinetics study, it was not difficult to find that the chemical reaction is the controlling-step for CWS electrolysis. And the apparent activation energy (AAE) changed from 28.37 to 27.61 kj mol(-1) with ultrasonic addition. The slight change in the AAE suggested that the ultrasonic improved the mass transfer of coal particle only in electrolyte, and did not change reaction path. Additionally, TOC concentration decreased with the increase in mineral matter content, indicating that the mineral matters inhibited the organic structure electrolysis. (C) 2013 Elsevier B.V. All rights reserved.
KeywordElectrolysis Kinetics Cws Toc Ultrasonic
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.fuproc.2013.10.029
URL查看原文
Indexed BySCI
Language英语
WOS KeywordLOW-RANK COALS ; OXIDATIVE-DEGRADATION METHOD ; LIQUID-PHASE OXIDATION ; NITRIC-ACID OXIDATION ; VALUABLE CHEMICALS ; ELECTROCHEMICAL GASIFICATION ; INTERMEDIATE TEMPERATURES ; CATALYTIC-OXIDATION ; HYDROGEN-PRODUCTION ; ANODIC-OXIDATION
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Energy & Fuels ; Engineering, Chemical
WOS IDWOS:000330145000022
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8044
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Gong, Xuzhong,Wu, Ying,Wang, Zhi,et al. Changes of total organic carbon and kinetics of ultrasonic-assisted coal water slurry electrolysis in NaOH system[J]. FUEL PROCESSING TECHNOLOGY,2014,119(1):166-172.
APA Gong, Xuzhong,Wu, Ying,Wang, Zhi,Wang, Mingyong,&Guo, Zhancheng.(2014).Changes of total organic carbon and kinetics of ultrasonic-assisted coal water slurry electrolysis in NaOH system.FUEL PROCESSING TECHNOLOGY,119(1),166-172.
MLA Gong, Xuzhong,et al."Changes of total organic carbon and kinetics of ultrasonic-assisted coal water slurry electrolysis in NaOH system".FUEL PROCESSING TECHNOLOGY 119.1(2014):166-172.
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