DOI: 10.1016/j.watres.2018.01.033
Scopus记录号: 2-s2.0-85041457289
论文题名: Kinetic evaluation of graphene oxide based heterogenous catalytic ozonation for the removal of ibuprofen
作者: Jothinathan L. ; Hu J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 134 起始页码: 63
结束页码: 73
语种: 英语
英文关键词: Graphene oxide (GO)
; Heterogenous catalyst
; Ibuprofen removal
; Ozonation
Scopus关键词: Biological materials
; Ozone
; Ozonization
; Rate constants
; Catalytic ozonation
; Heterogenous catalysts
; Inhibition rate constants
; Kinetic evaluations
; Natural organic matters
; Organic degradation
; Ozonation process
; Radical chain reactions
; Graphene
; graphene oxide
; hydroxyl radical
; ibuprofen
; nanocomposite
; natural organic matter
; ozone
; graphite
; hydrogen peroxide
; ibuprofen
; magnetite
; oxide
; titanium
; titanium dioxide
; catalysis
; catalyst
; chemical compound
; decomposition
; oxide
; ozonation
; performance assessment
; pollutant removal
; reaction kinetics
; adsorption
; Article
; catalyst
; controlled study
; decomposition
; drug degradation
; kinetics
; ozonation
; priority journal
; surface property
; suspension
; total organic carbon
; water treatment
; catalysis
; chemistry
; kinetics
; procedures
; water management
; water pollutant
; Catalysis
; Ferrosoferric Oxide
; Graphite
; Hydrogen Peroxide
; Ibuprofen
; Kinetics
; Oxides
; Ozone
; Titanium
; Water Pollutants, Chemical
; Water Purification
英文摘要: In this study, the performance of graphene oxide (GO) in ozonation process was kinetically evaluated using the modified Rct concept since GO may act as initiator, promoter and inhibitor in ozone radical chain reaction. The applicability of the modified Rct concept was demonstrated using different GO suspensions (GO alone, GO/TiO2, GO/Fe3O4, GO/TiO2/Fe3O4) in ozonation process. Results showed that ozone exposure and •OH exposure were found to be higher for GO/Fe3O4 and GO/TiO2/Fe3O4 compared to other GO suspensions, which was almost equivalent to O3/H2O2 process. The determined initiation and inhibition rate constants of GO alone, were 1 fold higher than GO/Fe3O4 and GO/TiO2/Fe3O4, since the GO alone suspension possesses higher O3 decomposition but lower organic degradation because that GO does not yield •OH. Moreover, GO/Fe3O4 suspension, along with natural organic matter (NOM), was proven to be helpful in degrading ibuprofen in ozonation process, but the effect was minimal when compared to O3/H2O2 process. These results exhibited that the surface modified GO suspensions could be utilized as future alternative AOPs. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112922
Appears in Collections: 气候减缓与适应
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作者单位: Department of Civil and Environmental Engineering, Faculty of Engineering, National University of Singapore, 1 Engineering Drive 2117576, Singapore
Recommended Citation:
Jothinathan L.,Hu J.. Kinetic evaluation of graphene oxide based heterogenous catalytic ozonation for the removal of ibuprofen[J]. Water Research,2018-01-01,134