DOI: 10.1016/j.watres.2018.10.096
Scopus记录号: 2-s2.0-85056571036
论文题名: Synthesis and bactericide activity of nanofiltration composite membranes – Cellulose acetate/silver nanoparticles and cellulose acetate/silver ion exchanged zeolites
作者: Beisl S. ; Monteiro S. ; Santos R. ; Figueiredo A.S. ; Sánchez-Loredo M.G. ; Lemos M.A. ; Lemos F. ; Minhalma M. ; de Pinho M.N.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 225
结束页码: 231
语种: 英语
英文关键词: Bactericide activity through nanometric and/or ionic silver
; Biofouling
; Cellulose acetate composite membranes
; High flux nanofiltration
; Polyvinylpyrrolidone coated silver nanoparticles
; Silver ion exchanged zeolites
Scopus关键词: Bactericides
; Biofouling
; Cellulose
; Chlorine compounds
; Composite membranes
; Escherichia coli
; Ion exchange
; Metal ions
; Metal nanoparticles
; Nanofiltration
; Nanofiltration membranes
; Salts
; Sulfur compounds
; Synthesis (chemical)
; Water filtration
; Water treatment
; Zeolites
; Cellulose acetates
; High-flux nanofiltration
; Nanometrics
; Poly vinyl pyrrolidone
; Silver ions
; Silver nanoparticles
; cellulose acetate
; chloride
; povidone
; silver nanoparticle
; sulfate
; zeolite
; antimicrobial activity
; biofouling
; cellulose
; coliform bacterium
; composite
; filtration
; flux measurement
; ion exchange
; membrane
; nanoparticle
; nanotechnology
; performance assessment
; permeability
; silver
; zeolite
; aqueous solution
; Article
; bactericidal activity
; contact time
; Escherichia coli
; hydraulic permeability
; nanofiltration
; nonhuman
; oxidation
; oxidation reduction potential
; priority journal
; stereospecificity
; synthesis
; water treatment
; zeta potential
; Bactericides
; Cellulose
; Chlorine Compounds
; Ion Exchange
; Sulfur Compounds
; Water Treatment
; Bacteria (microorganisms)
; Escherichia coli
英文摘要: The present work addresses the synthesis of nanofiltration composite membranes with bactericide properties. The cellulose acetate based membranes with polyvinylpyrrolidone coated silver nanoparticles, silver ion-exchanged β-zeolite and β-zeolite are casted by the phase inversion technique and subjected to an annealing post-treatment. They are characterized in terms of the nanofiltration permeation performance and antibacterial properties. The incorporation of silver nanoparticles produces a threefold increase in the membrane hydraulic permeability when compared to the silver-free membranes and the incorporation of silver ion loaded zeolite resulted in a 56.3% increase in hydraulic permeability. In contrast to the influence of silver presence, either in nanometric or in the ionic form, the presence of zeolite does not significantly influence the hydraulic permeability. The rejection coefficients to salts range from 83% to 93% for the silver ion-exchanged zeolite membrane and from 84% to 97% for the polyvinylpyrrolidone coated silver nanoparticles membrane. They are higher for sulfate salts than for chloride salts. The antibacterial properties of the membranes were evaluated against Escherichia coli. The results have shown that the silver ion-exchanged β-zeolite membrane was effective in inactivating Escherichia coli after just 210 min of contact time. No bacterial activity was detected following 24 h of contact time with the membrane containing polyvinylpyrrolidone coated silver nanoparticles. A reduction of more than 6-log, in the number of Escherichia coli, was achieved for both membranes. The different patterns of bactericide activity are associated to the silver speciation in metallic or ionic form. The high flux nanofiltration composite membranes with bactericidal properties represent a strong asset in water treatment biofouling control. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122158
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, Vienna, 1060, Austria; Laboratório de Análises, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, 1049-001, Portugal; CEFEMA/Chemical Engineering Department, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, 1049-001, Portugal; Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, Lisbon, 1959-007, Portugal; Instituto de Metalurgia/Facultad de Ingeniería, Universidad Autónoma de San Luis Potosí, San Luis Potosí, 78210, Mexico; CERENA/Chemical Engineering Department, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, 1049-001, Portugal
Recommended Citation:
Beisl S.,Monteiro S.,Santos R.,et al. Synthesis and bactericide activity of nanofiltration composite membranes – Cellulose acetate/silver nanoparticles and cellulose acetate/silver ion exchanged zeolites[J]. Water Research,2019-01-01