globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2017.11.024
Scopus ID: 2-s2.0-85034099445
Real-time evaluation of natural organic matter deposition processes onto model environmental surfaces
Author: Li W.; Liao P.; Oldham T.; Jiang Y.; Pan C.; Yuan S.; Fortner J.D.
Source Publication: Water Research
ISSN: 431354
Publishing Year: 2018
Volume: 129
pages begin: 231
pages end: 239
Language: 英语
Keyword: Adsorption ; Deposition ; Environmental surfaces ; NOM ; QCM-D ; Release
Scopus Keyword: Adsorption ; Alumina ; Amino acids ; Biogeochemistry ; Deposition ; Deposition rates ; Electrolytes ; Hydroxyapatite ; Iron oxides ; Isotherms ; Magnetite ; Organic compounds ; Positive ions ; Quartz crystal microbalances ; Silica ; Vapor deposition ; Viscoelasticity ; Electrolyte compositions ; Environmental surfaces ; Langmuir isotherm models ; Natural organic matters ; Quartz crystal microbalance with dissipation monitoring ; Release ; Suwannee River fulvic acid ; Suwannee river humic acid ; Aluminum oxide ; adlayer ; aluminum oxide ; calcium ion ; divalent cation ; electrolyte ; fulvic acid ; humic acid ; hydroxyapatite ; iron oxide ; magnesium ion ; natural organic matter ; polystyrene ; silicon dioxide ; surface water ; benzopyran derivative ; fulvic acid ; polystyrene derivative ; water ; adsorption ; aluminum oxide ; aqueous solution ; electrolyte ; fulvic acid ; humic acid ; iron oxide ; organic matter ; quartz ; real time ; viscoelasticity ; adsorption ; aqueous solution ; Article ; chemical composition ; chemical interaction ; chemical structure ; concentration (parameters) ; environmental monitoring ; environmental release ; evaluation study ; ionic strength ; isotherm ; molecular weight ; pH ; priority journal ; quartz crystal microbalance ; river ; surface charge ; surface property ; viscoelasticity ; waste water management ; adsorption ; chemistry ; humic substance ; surface property ; Adsorption ; Aluminum Oxide ; Benzopyrans ; Electrolytes ; Humic Substances ; Polystyrenes ; Quartz Crystal Microbalance Techniques ; Rivers ; Silicon Dioxide ; Surface Properties ; Water
English Abstract: Natural organic matter (NOM) is ubiquitous in aqueous systems and dynamically partitions onto/from environmental surfaces. However, such interfacial processes have not been uniformly quantified in situ and in real time. In this work, adsorption and deposition processes of Suwannee River humic acid (SRHA) and Suwannee River fulvic acid (SRFA), as model NOM, were evaluated for a series of environmentally relevant interfaces. Real-time, interfacial phenomenon, including deposition, release, and adlayer viscoelastic properties, were quantified over a variety of water chemistries via quartz crystal microbalance with dissipation monitoring (QCM-D). Specifically, adlayer mass and deposition rates of SRHA and SRFA were evaluated as a function of NOM concentration/molecular weight (fraction), pH, electrolyte composition (type and concentration), and collector surface type. For these, the adsorption of SRHA onto aluminum oxide (Al2O3) and polystyrene (PS) surfaces follows the Langmuir isotherm model. Rapid, near-monolayer formation of SRHA/SRFA adlayers were observed on Al2O3, hydroxyapatite (HAP), and poly (L-lysine) (PLL) surfaces, but not on PS or iron oxide (Fe3O4) surfaces. The presence of divalent cations (Ca2+/Mg2+) at relatively low concentrations (0.5–5.0 mM) significantly enhances the mass of SRHA/SRFA deposited onto the surfaces of silica (SiO2), Al2O3, and PS. Viscoelastic properties of the adsorbed layer based on the ratio of dissipation to frequency revealed a relatively unique adlayer structure for SRHA in the presence of 5.0 mM Ca2+. © 2017
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被引频次[WOS]:7   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Appears in Collections:气候减缓与适应

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Affiliation: Department of Energy, Environmental & Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States; State Key Lab of Biogeology and Environmental Geology, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, China; School of Environmental Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Road, Shenzhen, 518055, China

Recommended Citation:
Li W.,Liao P.,Oldham T.,et al. Real-time evaluation of natural organic matter deposition processes onto model environmental surfaces[J]. Water Research,2018-01-01,129
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