Microbubble enhanced ozonation process for advanced treatment of wastewater produced in acrylic fiber manufacturing industry

Handle URI:
http://hdl.handle.net/10754/347289
Title:
Microbubble enhanced ozonation process for advanced treatment of wastewater produced in acrylic fiber manufacturing industry
Authors:
Zheng, Tianlong; Wang, Qunhui; Zhang, Tao; Shi, Zhining; Tian, Yanli; Shi, Shanshan; Smale, Nicholas; Wang, Juan
Abstract:
This work investigated microbubble-ozonation for the treatment of a refractory wet-spun acrylic fiber wastewater in comparison to macrobubble-ozonation. CODcr, NH3-N, and UV254 of the wastewater were removed by 42%, 21%, and 42%, respectively in the microbubble-ozonation, being 25%, 9%, and 35% higher than the removal rates achieved by macrobubble-ozonation at the same ozone dose. The microbubbles (with average diameter of 45μm) had a high concentration of 3.9×105 counts/mL at a gas flow rate of 0.5L/min. The gas holdup, total ozone mass-transfer coefficient, and average ozone utilization efficiency in the microbubble-ozonation were 6.6, 2.2, and 1.5 times higher than those of the macrobubble-ozonation. Greater generation of hydroxyl radicals and a higher zeta potential of the bubbles were also observed in the microbubble ozonation process. The biodegradability of the wastewater was also significantly improved by microbubble-ozonation, which was ascribed to the enhanced degradation of alkanes, aromatic compounds, and the many other bio-refractory organic compounds in the wastewater. Microbubble-ozonation can thus be a more effective treatment process than traditional macrobubble-ozonation for refractory wastewater produced by the acrylic fiber manufacturing industry.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Citation:
Microbubble enhanced ozonation process for advanced treatment of wastewater produced in acrylic fiber manufacturing industry 2015, 287:412 Journal of Hazardous Materials
Publisher:
Elsevier
Journal:
Journal of Hazardous Materials
Issue Date:
2-Feb-2015
DOI:
10.1016/j.jhazmat.2015.01.069
Type:
Article
ISSN:
03043894
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0304389415000801
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorZheng, Tianlongen
dc.contributor.authorWang, Qunhuien
dc.contributor.authorZhang, Taoen
dc.contributor.authorShi, Zhiningen
dc.contributor.authorTian, Yanlien
dc.contributor.authorShi, Shanshanen
dc.contributor.authorSmale, Nicholasen
dc.contributor.authorWang, Juanen
dc.date.accessioned2015-03-30T12:49:49Zen
dc.date.available2015-03-30T12:49:49Zen
dc.date.issued2015-02-02en
dc.identifier.citationMicrobubble enhanced ozonation process for advanced treatment of wastewater produced in acrylic fiber manufacturing industry 2015, 287:412 Journal of Hazardous Materialsen
dc.identifier.issn03043894en
dc.identifier.doi10.1016/j.jhazmat.2015.01.069en
dc.identifier.urihttp://hdl.handle.net/10754/347289en
dc.description.abstractThis work investigated microbubble-ozonation for the treatment of a refractory wet-spun acrylic fiber wastewater in comparison to macrobubble-ozonation. CODcr, NH3-N, and UV254 of the wastewater were removed by 42%, 21%, and 42%, respectively in the microbubble-ozonation, being 25%, 9%, and 35% higher than the removal rates achieved by macrobubble-ozonation at the same ozone dose. The microbubbles (with average diameter of 45μm) had a high concentration of 3.9×105 counts/mL at a gas flow rate of 0.5L/min. The gas holdup, total ozone mass-transfer coefficient, and average ozone utilization efficiency in the microbubble-ozonation were 6.6, 2.2, and 1.5 times higher than those of the macrobubble-ozonation. Greater generation of hydroxyl radicals and a higher zeta potential of the bubbles were also observed in the microbubble ozonation process. The biodegradability of the wastewater was also significantly improved by microbubble-ozonation, which was ascribed to the enhanced degradation of alkanes, aromatic compounds, and the many other bio-refractory organic compounds in the wastewater. Microbubble-ozonation can thus be a more effective treatment process than traditional macrobubble-ozonation for refractory wastewater produced by the acrylic fiber manufacturing industry.en
dc.publisherElsevieren
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0304389415000801en
dc.rightsArchived with thanks to Journal of Hazardous Materials. Copyright © 2015 Elsevier B.V. All rights reserved.en
dc.titleMicrobubble enhanced ozonation process for advanced treatment of wastewater produced in acrylic fiber manufacturing industryen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalJournal of Hazardous Materialsen
dc.eprint.versionPost-printen
dc.contributor.institutionDepartment of Environmental Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, Chinaen
dc.contributor.institutionBeijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, Chinaen
dc.contributor.institutionSchool of Earth and Environmental Sciences, The University of Adelaide, South Australia 5005, Australiaen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorZhang, Taoen
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