Characterization of natural organic matter treated by iron oxide nanoparticle incorporated ceramic membrane-ozonation process

Park, Hosik; Kim, Young S.; An, Byungryul; Choi, Heechul

doi:10.1016/j.watres.2012.07.039

Cited by 93 publications

(23 citation statements)

References 39 publications

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“…Recently, there are increasing interests on catalytic ozonation with various catalysts to improve the oxidation efficiency of ozonation [11][12][13]. Our and other studies have verified that more reactive oxygen species were generated from the interaction of ozone and surface Lewis acid sites of catalysts [14][15][16].…”

Section: Introductionsupporting

confidence: 57%

Enhanced inhibition of bromate formation in catalytic ozonation of organic pollutants over Fe–Al LDH/Al2O3

Nie

2015

Separation and Purification Technology

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a b s t r a c tFe-Al layered double hydroxides (Fe-Al LDH, the molar ratio of Fe(II) to Fe(III) was about 1:10) was successfully supported and highly dispersed on mesoporous Al 2 O 3 based on the X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis. Fe-Al LDH/Al 2 O 3 was more efficient in inhibiting BrO 3 À formation and removing organic pollutant taking ozonation alone as control. Further investigation indicated that BrO 3 À reduction by surface Fe(II) was responsible to the complete inhibition of BrO 3 À formation.

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Section: Introductionsupporting

confidence: 57%

Enhanced inhibition of bromate formation in catalytic ozonation of organic pollutants over Fe–Al LDH/Al2O3

Nie

2015

Separation and Purification Technology

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“…Coating nanoparticles on the membrane surface has been found to modify the membrane surface and improve its fouling resistance properties, such as by coating silver nanoparticles (AgNPs) 24 , SiO 2 nanoparticles 25 26 and TiO 2 nanoparticles 27 28 29 30 . Also, a hybrid ceramic membrane process with iron nanoparticles effectively removed and transformed relatively high contents of aromatic, high molecular weight and hydrophobic natural organic matter (NOM) fractions 31 .…”

mentioning

confidence: 99%

“…Therefore, it may need combine this method with others. Combining ozonation with other pre-treatment methods can enhance pollutant removal and mitigate membrane fouling, such as ozone with iron oxide nanoparticles 31 38 , because of the generation of hydroxyl radicals from the catalytic decomposition of ozone. Alternatively, ozonation-biological activated carbon (BAC) filtration can mitigate UF membrane fouling for treating activated sludge (AS) effluent 39 , and ozonation-powdered activated carbon (PAC) can remove aromatic DOC and other organic matter in drinking water treatment 40 .…”

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confidence: 99%

Prevention of PVDF ultrafiltration membrane fouling by coating MnO2 nanoparticles with ozonation

Brown

Graham

2016

Sci Rep

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Pre-treatment is normally required to reduce or control the fouling of ultrafiltration (UF) membranes in drinking water treatment process. Current pre-treatment methods, such as coagulation, are only partially effective to prevent long-term fouling. Since biological activities are a major contributor to accumulated fouling, the application of an oxidation/disinfection step can be an effective complement to coagulation. In this study, a novel pre-treatment method has been evaluated at laboratory scale consisting of the addition of low dose ozone into the UF membrane tank after coagulation and the use of a hollow-fibre membrane coated with/without MnO2 nanoparticles over a test period of 70 days. The results showed that there was minimal fouling of the MnO2 coated membrane (0.5 kPa for 70 days), while the uncoated membrane experienced both reversible and irreversible fouling. The difference was attributed to the greatly reduced presence of bacteria and organic matter because of the catalytic decomposition of ozone to hydroxyl radicals and increase of the hydrophilicity of the membrane surface. In particular, the MnO2 coated membrane had a much thinner cake layer, with significantly less polysaccharides and proteins, and much less accumulated organic matter within the membrane pores.

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“…However, it is difficult to purify and separate nano-Ag particles because of the small size and high surface energy. The common ways to clean metal nanoparticles include centrifugal separation, 16 ceramic membrane separation [17][18][19][20] and plasma cleaning. Nersisyan 21 and Sondi 22 both adopt high-speed settling centrifugal machine with more than 6000 rpm of centrifugal speed to purify and separate nano-Ag particles.…”

Section: Introductionmentioning

confidence: 99%

Low electrical resistivity of a graphene–AgNHPs based ink with a new processing method

Liu

Tang²,

Lü³

et al. 2017

RSC Adv.

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Characterization of natural organic matter treated by iron oxide nanoparticle incorporated ceramic membrane-ozonation process

Cited by 93 publications

References 39 publications

Enhanced inhibition of bromate formation in catalytic ozonation of organic pollutants over Fe–Al LDH/Al2O3

Enhanced inhibition of bromate formation in catalytic ozonation of organic pollutants over Fe–Al LDH/Al2O3

Prevention of PVDF ultrafiltration membrane fouling by coating MnO2 nanoparticles with ozonation

Low electrical resistivity of a graphene–AgNHPs based ink with a new processing method

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