DOI: 10.1016/j.watres.2018.09.018
Scopus记录号: 2-s2.0-85053051872
论文题名: Modeling emerging contaminants breakthrough in packed bed adsorption columns by UV absorbance and fluorescing components of dissolved organic matter
作者: Sgroi M. ; Anumol T. ; Roccaro P. ; Vagliasindi F.G.A. ; Snyder S.A.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 145 起始页码: 667
结束页码: 677
语种: 英语
英文关键词: Fluorescence EEM
; Granular activated carbon
; PARAFAC
; PFAS
; Pharmaceutical and personal care products
; Real-time monitoring
Scopus关键词: Activated carbon
; Adsorption
; Biogeochemistry
; Biological materials
; Dissolution
; Fluorescence
; Forecasting
; Granular materials
; Matrix algebra
; Organic carbon
; Packed beds
; Surface waters
; Water filtration
; Water quality
; Fluorescence eem
; Granular activated carbons
; PARAFAC
; PFAS
; Pharmaceutical and personal care products
; Real time monitoring
; Deionized water
; absorbance
; activated carbon
; adsorption
; dissolved organic carbon
; filtration
; fluorescence
; modeling
; organic pollutant
; pollutant removal
; PPCP
; real time
; surface water
; ultraviolet B radiation
; wastewater
; wastewater treatment
; water quality
英文摘要: This study investigated, using rapid small-scale column testing, the breakthrough of dissolved organic matter (DOM) and eleven emerging organic contaminants (EOCs) during granular activated carbon (GAC) filtration of different water qualities, including wastewater, surface water and synthetic water (riverine organic matter dissolved in deionized water). Fluorescing organic matter was better adsorbed than UV absorbance at 254 nm (UV254) and dissolved organic carbon (DOC) in all tested water. Furthermore, highest adsorption of DOM (in terms of DOC, UV254 and fluorescence) was observed during wastewater filtration. UV absorbing DOM had fast and similar breakthrough in surface water and synthetic water, whereas fluorescence breakthrough was very rapid only in synthetic water. PARAFAC modeling showed that different fluorescing components were differently adsorbed during GAC process. Particularly, fluorescing components with maxima intensity at higher excitation wavelengths, which are corresponding to humic-like fluorescence substances, were better removed than other components in all waters. As opposed to DOM, EOCs were better adsorbed during synthetic water filtration, whereas the fastest EOCs breakthrough was observed during filtration of wastewater, which was the water that determined the highest carbon fouling. Exception was represented by long-chained perfluoroalkylated substances (i.e., PFOA, PFDA and PFOS). Indeed, adsorption of these compounds resulted independent of water quality. In this study was also investigated the applicability of UV254 and fluorescing PARAFAC components to act as surrogates in predicting EOCs removal by GAC in different water matrices. Empirical linear correlation for the investigated EOCs were determined with UV254 and fluorescing components in all water qualities. However, fluorescence measurements resulted more sensitive than UV254 to predict EOC breakthrough during GAC adsorption. When the data from all water qualities was combined, good correlations between the microbial humic-like PARAFAC component and EOC removals were still observed and they resulted independent of water quality if considering only real water matrices (wastewater and surface water). On the contrary, correlations between EOC removals and UV254 removals were independent of water quality when combining data of surface waters and synthetic water, but a different correlation model was needed to predict EOCs breakthrough in wastewater. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112420
Appears in Collections: 气候减缓与适应
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作者单位: Department of Civil Engineering and Architecture, University of Catania, Viale A. Doria 6, Catania, 95125, Italy; Department of Chemical and Environmental Engineering, University of Arizona, 1133 E. James E. Rogers Way, Tucson, AZ 85721, United States; Agilent Technologies Inc., 2850 Centerville Road, Wilmington, DE 19808, United States; Nanyang Technological University;, Nanyang Environment & Water Research Institute, 1 Cleantech Loop, CleanTech One, #06-08637141, Singapore
Recommended Citation:
Sgroi M.,Anumol T.,Roccaro P.,et al. Modeling emerging contaminants breakthrough in packed bed adsorption columns by UV absorbance and fluorescing components of dissolved organic matter[J]. Water Research,2018-01-01,145