DOI: 10.1016/j.watres.2018.01.071
Scopus记录号: 2-s2.0-85041490162
论文题名: Influence of gas injection on viscous and viscoelastic properties of Xanthan gum
作者: Bobade V. ; Cheetham M. ; Hashim J. ; Eshtiaghi N.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 134 起始页码: 86
结束页码: 91
语种: 英语
英文关键词: Flow behaviour
; Gas injection
; Herschel-Bulkley model
; Viscoelastic properties
; Xanthan gum
Scopus关键词: Creep
; Flow of gases
; Gas injection (Enhanced recovery)
; Gases
; Oil well flooding
; Rheology
; Solutions
; Strain rate
; Viscoelasticity
; Aqueous Xanthan gum solution
; Flow behaviours
; Herschel-Bulkley model
; Intermolecular association
; Rheological behaviour
; Viscoelastic behaviour
; Viscoelastic properties
; Waste activated sludges
; Xanthan gum
; xanthan
; bacterial polysaccharide
; xanthan
; aqueous solution
; concentration (composition)
; flow field
; numerical model
; plant product
; rheology
; sludge
; viscoelasticity
; viscosity
; activated sludge
; aqueous solution
; Article
; clinical evaluation
; comparative study
; concentration process
; controlled study
; flow rate
; gas
; injection
; priority journal
; sludge digestion
; sludge treatment
; solid
; solid waste management
; viscoelasticity
; viscosity
; chemistry
; elasticity
; flow kinetics
; sewage
; viscosity
; Elasticity
; Polysaccharides, Bacterial
; Rheology
; Sewage
; Viscosity
英文摘要: Xanthan gum is widely used as a model fluid for sludge to mimic the rheological behaviour under various conditions including impact of gas injection in sludge. However, there is no study to show the influence of gas injection on rheological properties of xanthan gum specifically at the concentrations at which it is used as a model fluid for sludge with solids concentration above 2%. In this paper, the rheological properties of aqueous xanthan gum solutions at different concentrations were measured over a range of gas injection flow rates. The effect of gas injection on both the flow and viscoelastic behaviour of Xanthan gum (using two different methods - a creep test and a time sweep test) was evaluated. The viscosity curve of different solid concentrations of digested sludge and waste activated sludge were compared with different solid concentrations of Xanthan gum and the results showed that Xanthan gum can mimic the flow behaviour of sludge in flow regime. The results in linear viscoelastic regime showed that increasing gas flow rate increases storage modulus (G’), indicating an increase in the intermolecular associations within the material structure leading to an increase in material strength and solid behaviour. Similarly, in creep test an increase in the gas flow rate decreased strain%, signifying that the material has become more resistant to flow. Both observed behaviour is opposite to what occurs in sludge under similar conditions. The results of both the creep test and the time sweep test indicated that choosing Xanthan gum aqueous solution as a transparent model fluid for sludge in viscoelastic regime under similar conditions involving gas injection in a concentration range studied is not feasible. However Xanthan gum can be used as a model material for sludge in flow regime; because it shows a similar behaviour to sludge. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112903
Appears in Collections: 气候减缓与适应
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作者单位: RMIT University, School of Civil, Environmental and Chemical Engineering, 124 La Trobe St, Melbourne, Vic 3000, Australia
Recommended Citation:
Bobade V.,Cheetham M.,Hashim J.,et al. Influence of gas injection on viscous and viscoelastic properties of Xanthan gum[J]. Water Research,2018-01-01,134