Sulfur removal from bauxite water slurry (BWS) electrolysis intensified by ultrasonic | |
Ge, Lan1; Gong, Xuzhong1; Wang, Zhi1; Zhao, Lixin2; Wang, Yuhua1; Wang, Mingyong1 | |
刊名 | ULTRASONICS SONOCHEMISTRY |
2015-09-01 | |
卷号 | 26期号:SEP页码:142-148 |
关键词 | Electrolysis Desulfurization High sulfur bauxite Ultrasonic Polarization curve Kinetics |
ISSN号 | 1350-4177 |
英文摘要 | Effects of ultrasonic on desulfurization ratio from bauxite water slurry (BWS) electrolysis in NaOH solution were examined under constant current. The results indicated that ultrasonic improved the desulfurization ratio at high temperatures because of the diffusion and transfer of oxygen gas in electrolyte. However, due to the increase in oxygen gas emission, ultrasonic could not improve the desulfurization ratio obviously at low temperatures. Additionally, the particle size of bauxite became fine in the presence of ultrasonic, indicating that the mass transfer of FeS2 phase was improved. According to the polarization curves, the current density increased in the presence of ultrasonic, indicating that the mass transfer of liquid phase was improved. The apparent activation energy (AAE) of electrode reaction revealed that ultrasonic did not change the pathway of water electrolysis. However, ultrasonic changed the pathway of BWS electrolysis, converting indirect oxidation into direct oxidation. The ME of BWS electrolysis in the presence of ultrasonic was higher than that in the absence of ultrasonic. And the low AAEs (less than 20 kJ/mol) clearly indicated the diffusion control during BWS electrolysis reaction. (C) 2015 Elsevier B.V. All rights reserved. |
WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
类目[WOS] | Acoustics ; Chemistry, Multidisciplinary |
研究领域[WOS] | Acoustics ; Chemistry |
关键词[WOS] | ELECTROCHEMICAL OXIDATION ; AQUEOUS-SOLUTION ; IONIC LIQUID ; PYRITE FES2 ; ACID ; COAL ; DESULFURIZATION ; ELECTRODES ; OXYGEN ; DEGRADATION |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000355024300019 |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/19248] |
专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Tianjin Univ Technol, Dept Environm Sci & Safety Engn, Tianjin 300384, Peoples R China |
推荐引用方式 GB/T 7714 | Ge, Lan,Gong, Xuzhong,Wang, Zhi,et al. Sulfur removal from bauxite water slurry (BWS) electrolysis intensified by ultrasonic[J]. ULTRASONICS SONOCHEMISTRY,2015,26(SEP):142-148. |
APA | Ge, Lan,Gong, Xuzhong,Wang, Zhi,Zhao, Lixin,Wang, Yuhua,&Wang, Mingyong.(2015).Sulfur removal from bauxite water slurry (BWS) electrolysis intensified by ultrasonic.ULTRASONICS SONOCHEMISTRY,26(SEP),142-148. |
MLA | Ge, Lan,et al."Sulfur removal from bauxite water slurry (BWS) electrolysis intensified by ultrasonic".ULTRASONICS SONOCHEMISTRY 26.SEP(2015):142-148. |
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