DOI: 10.1016/j.watres.2018.11.016
Scopus记录号: 2-s2.0-85056859288
论文题名: Effective removal of emerging dissolved cyanotoxins from water using hybrid photocatalytic composites
作者: Chae S. ; Noeiaghaei T. ; Oh Y. ; Kim I.S. ; Park J.-S.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 421
结束页码: 431
语种: 英语
英文关键词: Adsorption
; Cyanotoxins
; Harmful algal blooms
; Hybrid photocatalytic composites
; Photocatalytic activity
; Reactive oxygen species
Scopus关键词: Adsorption
; Algae control
; Carbon nanotubes
; Oxygen
; Photocatalysis
; Titanium dioxide
; Water supply
; Yarn
; Cyanotoxins
; Harmful algal blooms
; Photo-catalytic
; Photocatalytic activities
; Reactive oxygen species
; Complexation
; anatoxin a
; carbon nanotube
; cylindrospermopsin
; fresh water
; organic compound
; reactive oxygen metabolite
; saxitoxin
; singlet oxygen
; titanium dioxide nanoparticle
; water
; algal bloom
; carbon nanotube
; catalysis
; composite
; cyanobacterium
; dissolved load
; photochemistry
; pollutant removal
; reactive oxygen species
; toxin
; water treatment
; adsorption
; algal bloom
; Article
; degradation
; enzyme linked immunosorbent assay
; heavy metal removal
; hydrophilicity
; oxidation
; photocatalysis
; porosity
; priority journal
; scanning electron microscopy
; transmission electron microscopy
; water permeability
; water supply
; water treatment
; X ray diffraction
; algae
; Cyanobacteria
英文摘要: Harmful algal blooms are occurring more frequently in fresh water throughout the world. Certain cyanobacteria can produce and release potent toxic compounds, known as cyanotoxins, such as microcystins, cylindrospermopsin, saxitoxin, and anatoxin-a, and as such they have become a human and environmental health concern. Hybrid photocatalytic composites (HPCs) comprising carbon nanotubes on the surface of TiO2 nanotubes were designed in this study. The HPCs have a selective adsorption capacity to cyanotoxins and provide photocatalytic activity to produce reactive oxygen species for the degradation of cyanotoxins. HPCs with 5.2 mg carbon nanotubes/cm2 showed an excellent removal efficiency of microcystins-LR (>95%) at 55.6 L/m2/hr/bar. The HPCs more efficiently removed the relatively larger and more hydrophobic cyanotoxins (i.e., microcystin-LR) than the relatively smaller and more hydrophilic compounds, such as cylindrospermopsin, saxitoxin, and anatoxin-a. With a further increased in the carbon nanotube content to 8.6 mg/cm2, the adsorption capacity of the HPCs for cyanotoxins increased to 70.6% for MC-LR. However, there was significant decrease in the photocatalytic activity of the HPCs for production of reactive oxygen species, and consequently a decrease in the degradation of cyanotoxins. It is considered that this device could be used to provide complete rejection of particles and pathogens, and also to significantly reduce trace organic compounds and harmful algal toxins in emergency water supplies. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122138
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemical and Environmental Engineering, University of Cincinnati, 2901 Woodside Drive, Cincinnati, OH 45221-0012, United States; Faculty of Engineering, University of New South Wales, Sydney, NSW 2052, Australia; Global Desalination Research Center, School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, South Korea; Department of Green Chemical Engineering, College of Engineering, Sangmyung University, Cheonan, Chungnam Province 31066, South Korea
Recommended Citation:
Chae S.,Noeiaghaei T.,Oh Y.,et al. Effective removal of emerging dissolved cyanotoxins from water using hybrid photocatalytic composites[J]. Water Research,2019-01-01