DOI: 10.1016/j.watres.2017.12.021
Scopus记录号: 2-s2.0-85041396042
论文题名: Comparison of Alcian blue and total carbohydrate assays for quantitation of transparent exopolymer particles (TEP) in biofouling studies
作者: Li X. ; Skillman L. ; Li D. ; Ela W.P.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 133 起始页码: 60
结束页码: 68
语种: 英语
英文关键词: Alcian blue
; Biofouling
; Membrane fouling
; Precursor TEP
; Total carbohydrate assay
; Transparent exopolymer particles (TEP)
Scopus关键词: Assays
; Biofouling
; Calibration
; Carbohydrates
; Desalination
; Membrane fouling
; Recovery
; Sodium alginate
; Water treatment
; Accuracy of measurements
; Acidic polysaccharides
; Alcian blues
; Membrane biofouling
; Precursor TEP
; Total carbohydrates
; Transparent exopolymer particles
; Water treatment systems
; Xanthan gum
; alcian blue
; alginic acid
; carbohydrate
; pectin
; polysaccharide
; sea water
; transparent exopolymer particle
; unclassified drug
; xanthan
; carbohydrate
; fresh water
; salt water
; accuracy assessment
; bioassay
; biofouling
; carbohydrate
; comparative study
; exopolymer
; measurement method
; polymer
; quantitative analysis
; Article
; biofouling
; calibration
; carbohydrate analysis
; comparative study
; concentration (parameters)
; desalination
; measurement accuracy
; particle size
; priority journal
; quantitative analysis
; salinity
; water sampling
; water treatment
; artificial membrane
; filtration
; procedures
; water management
; Alcian Blue
; Biofouling
; Carbohydrates
; Filtration
; Fresh Water
; Membranes, Artificial
; Saline Waters
; Water Purification
英文摘要: Transparent exopolymer particles (TEP) and their precursors are gel-like acidic polysaccharide particles. Both TEP precursors and TEP have been identified as causal factors in fouling of desalination and water treatment systems. For comparison between studies, it is important to accurately measure the amount and fouling capacity of both components. However, the accuracy and recovery of the currently used Alcian blue based TEP measurement of different surrogates and different size fractions are not well understood. In this study, we compared Alcian blue based TEP measurements with a total carbohydrate assay method. Three surrogates; xanthan gum, pectin and alginic acid; were evaluated at different salinities. Total carbohydrate concentrations of particulates (>0.4 μm) and their precursors (<0.4 μm, >10 kDa) varied depending on water salinity and method of recovery. As xanthan gum is the most frequently used surrogate in fouling studies, TEP concentration is expressed as xanthan gum equivalents (mg XGeq/L) in this study. At a salinity of 35 mg/L sea salt, total carbohydrate assays showed a much higher particulate TEP fraction for alginic acid (38%) compared to xanthan gum (9%) and pectin (12%). The concentrations of particulate TEP therefore may only represent ∼10% of the total mass; while precursor TEP represents ∼80% of the total TEP. This highlights the importance of reporting both particulate and precursor TEP for membrane biofouling studies. The calculated concentrations of TEP and their precursors in seawater samples are also highly dependent on type of surrogate and resulting calibration factor. A linear correlation between TEP recovery and calibration factor was demonstrated in this study for all three surrogates. The relative importance and accuracy of measurement method, particulate size, surrogate type, and recovery are described in detail in this study. © 2017 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112952
Appears in Collections: 气候减缓与适应
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作者单位: School of Engineering and Information Technology, Murdoch University, Murdoch, WA 6150, Australia
Recommended Citation:
Li X.,Skillman L.,Li D.,et al. Comparison of Alcian blue and total carbohydrate assays for quantitation of transparent exopolymer particles (TEP) in biofouling studies[J]. Water Research,2018-01-01,133