DOI: 10.1016/j.watres.2019.02.014
Scopus记录号: 2-s2.0-85061909850
论文题名: Continuous bubble reactor using carbon dioxide and its mixtures for ballast water treatment
作者: Baek J.-T. ; Hong J.-H. ; Tayyab M. ; Kim D.-W. ; Jeon P.R. ; Lee C.-H.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 154 起始页码: 316
结束页码: 326
语种: 英语
英文关键词: Ballast water treatment
; Carbon dioxide
; Computational fluid dynamics
; Continuous bubble reactor
; Flue gas
英文摘要: The treatment of ballast water is indispensable for preventing ecological and economic damage from the spread of invasive species. In this study, a continuous gas bubble reactor (CBR) system was developed for the efficient disinfection of microorganisms in ballast water. Ballast water treatment (BWT) in the CBR was experimentally performed to disinfect Artemia salina in seawater by using 1) pure CO 2 and 2) mixtures with CO 2 , N 2 , and/or SO 2 as a simulated flue gas (CO 2 /N 2 : 20%/80% and CO 2 /N 2 /SO 2 : 19.2%/77.0%/3.8%). The BWT efficiency was improved with an increase in gas flowrate, residence time, gas pressure, and CO 2 concentration in the gas. The toxicity of SO 2 in the CO 2 mixture significantly improved the mortality of microorganisms. Since good dispersion of bubbles and effective contact between bubbles and liquid were important factors in the BWT, a 100% mortality rate of microorganisms could be achieved by controlling the operating conditions in the vertical-type CBR with a counter-current flow between the gas bubbles and seawater. The CO 2 gas distribution, CO 2 solubility, and gas bubble size distribution in the CBR were determined using computational fluid dynamics (CFD) and experimentally confirmed using a high-speed camera. Since excess gas can be recovered from a gas-liquid separator before a ballast tank, the CBR system can be operated without using any toxic or explosive gases in an eco-friendly and energy saving manner. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121934
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Integrated Engineering, Yonsei University, Seoul, South Korea; Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, South Korea; Basic Materials & Chemicals R&D Center, LG Chem, Ltd., Daejeon, South Korea
Recommended Citation:
Baek J.-T.,Hong J.-H.,Tayyab M.,et al. Continuous bubble reactor using carbon dioxide and its mixtures for ballast water treatment[J]. Water Research,2019-01-01,154