DOI: 10.1016/j.watres.2018.04.065
Scopus记录号: 2-s2.0-85046703327
论文题名: Occurrence, characterisation and fate of (nano)particulate Ti and Ag in two Norwegian wastewater treatment plants
作者: Polesel F. ; Farkas J. ; Kjos M. ; Almeida Carvalho P. ; Flores-Alsina X. ; Gernaey K.V. ; Hansen S.F. ; Plósz B.G. ; Booth A.M.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 141 起始页码: 19
结束页码: 31
语种: 英语
英文关键词: Diurnal variation
; Modelling
; Nanoparticles
; Silver
; Titanium dioxide
; Wastewater
Scopus关键词: Biological materials
; Biosolids
; Consumer products
; Effluents
; High resolution transmission electron microscopy
; Industrial plants
; Industrial water treatment
; Models
; Nanoparticles
; Oxides
; Scanning electron microscopy
; Sewage pumping plants
; Silver
; Silver nanoparticles
; Titanium dioxide
; Transmission electron microscopy
; Wastewater
; Wastewater treatment
; Water treatment plants
; Diurnal variation
; Industrial facilities
; Pollutant concentration
; Scanning transmission electron microscopy
; Sequential filtration
; Total suspended solids
; Urban wastewater treatment plants
; Wastewater treatment plants
; Silver compounds
; silver nanoparticle
; titanium dioxide nanoparticle
; metal nanoparticle
; silver
; titanium
; biosolid
; concentration (composition)
; diurnal variation
; filtration
; inorganic compound
; modeling
; nanoparticle
; pollutant removal
; wastewater
; wastewater treatment
; wastewater treatment plant
; Article
; biosolid
; catchment
; chemical oxygen demand
; circadian rhythm
; effluent
; fractionation
; Norway
; priority journal
; suspended particulate matter
; waste water treatment plant
; water pollutant
; analysis
; environmental monitoring
; scanning transmission electron microscopy
; sewage
; ultrastructure
; waste water
; Norway
; Sor Trondelag
; Trondheim
; Environmental Monitoring
; Metal Nanoparticles
; Microscopy, Electron, Scanning Transmission
; Norway
; Silver
; Titanium
; Waste Disposal, Fluid
; Waste Water
; Water Pollutants, Chemical
英文摘要: Due to their widespread application in consumer products, elemental titanium (e.g., titanium dioxide, TiO2) and silver (Ag), also in nanoparticulate form, are increasingly released from households and industrial facilities to urban wastewater treatment plants (WWTPs). A seven-day sampling campaign was conducted in two full-scale WWTPs in Trondheim (Norway) employing only primary treatment. We assessed the occurrence and elimination of Ti and Ag, and conducted size-based fractionation using sequential filtration of influent samples to separate particulate, colloidal and dissolved fractions. Eight-hour composite influent samples were collected to assess diurnal variations in total Ti and Ag influx. Measured influent Ti concentrations (up to 290 μg L−1) were significantly higher than Ag (<0.15-2.1 μg L−1), being mostly associated with suspended solids (>0.7 μm). Removal efficiencies ≥70% were observed for both elements, requiring for one WWTP to account for the high Ti content (∼2 g L−1) in the flocculant. Nano- and micron-sized Ti particles were observed with scanning transmission electron microscopy (STEM) in influent, effluent and biosolids, while Ag nanoparticles were detected in biosolids only. Diurnal profiles of influent Ti were correlated to flow and pollutant concentration patterns (especially total suspended solids), with peaks during the morning and/or evening and minima at night, indicating household discharges as predominant source. Irregular profiles were exhibited by influent Ag, with periodic concentration spikes suggesting short-term discharges from one or few point sources (e.g., industry). Influent Ti and Ag dynamics were reproduced using a disturbance scenario generator model, and we estimated per capita loads of Ti (42-45 mg cap−1 d−1) and Ag (0.11 mg cap−1 d−1) from households as well as additional Ag load (14-22 g d−1) from point discharge. This is the first study to experimentally and mathematically describe short-term release dynamics and dry-weather sources of emissions of Ti and Ag in municipal WWTPs and receiving environments. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112664
Appears in Collections: 气候减缓与适应
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作者单位: DTU Environment, Technical University of Denmark, Bygningstorvet, Building 115, Kongens Lyngby, 2800, Denmark; SINTEF Ocean, Brattørkaia 17C, Trondheim, 7010, Norway; SINTEF Materials and Chemistry, Postboks 4760 Torgarden, Trondheim, 7465, Norway; Process and Systems Engineering Center (PROSYS), Department of Chemical and Biochemical Engineering, Technical University of Denmark, Søltofts Plads, Building 229, Kongens Lyngby, 2800, Denmark; Department of Chemical Engineering, University of Bath, Claverton Down, Bath, BA2 7AY, United Kingdom
Recommended Citation:
Polesel F.,Farkas J.,Kjos M.,et al. Occurrence, characterisation and fate of (nano)particulate Ti and Ag in two Norwegian wastewater treatment plants[J]. Water Research,2018-01-01,141