Novel Water Treatment Processes Based on Hybrid Membrane-Ozonation Systems: A Novel Ceramic Membrane Contactor for Bubbleless Ozonation of Emerging Micropollutants

Stylianou, Stylianos K.; Szymańska, Katarzyna; Katsoyiannis, Ioannis A.; Zouboulis, Anastasios

doi:10.1155/2015/214927

Cited by 33 publications

(23 citation statements)

References 56 publications

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“…Usually ceramic memberanes are made of a macroporous support, one or more mesoporous layers, and a microporous (or dense) top layer. At the top layer of the ceramic membrane the separation takes place, while the middle layers bridge the top and the bottom layer, which provide mechanical support [8].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Preparation and characterization of multilayer mesoporous alumina nano membrane via sol–gel method using new precursors

Kheirollahi

Abdellahi

Emamalizadeh

et al. 2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Preparation and characterization of multilayer mesoporous alumina nano membrane via sol–gel method using new precursors

Kheirollahi

Abdellahi

Emamalizadeh

et al. 2015

Ceramics International

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“…Ozone-resistant inorganic ceramic membranes are made of alumina [23][24][25] and porous glass [26]. To prevent wetting of the surface and flooding of membrane pores, ceramic materials usually require surface modification to increase hydrophobicity [27][28][29]. Most polymeric membrane materials are hydrophobic but are prone to reacting with ozone.…”

Section: Introductionmentioning

confidence: 99%

A Single Tube Contactor for Testing Membrane Ozonation

Zoumpouli

Baker

Taylor

et al. 2018

Water

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A membrane ozonation contactor was built to investigate ozonation using tubular membranes and inform computational fluid dynamics (CFD) studies. Non-porous tubular polydimethylsiloxane (PDMS) membranes of 1.0–3.2 mm inner diameter were tested at ozone gas concentrations of 110–200 g/m3 and liquid side velocities of 0.002–0.226 m/s. The dissolved ozone concentration could be adjusted to up to 14 mg O3/L and increased with decreasing membrane diameter and liquid side velocity. Experimental mass transfer coefficients and molar fluxes of ozone were 2.4 × 10−6 m/s and 1.1 × 10−5 mol/(m2 s), respectively, for the smallest membrane. CFD modelling could predict the final ozone concentrations but slightly overestimated mass transfer coefficients and molar fluxes of ozone. Model contaminant degradation experiments and UV light absorption measurements of ozonated water samples in both ozone (O3) and peroxone (H2O2/O3) reaction systems in pure water, river water, wastewater effluent, and solutions containing humic acid show that the contactor system can be used to generate information on the reactivity of ozone with different water matrices. Combining simple membrane contactors with CFD allows for prediction of ozonation performance under a variety of conditions, leading to improved bubble-less ozone systems for water treatment.

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“…Ozone resistant inorganic ceramic membranes are made of alumina [23][24][25] and porous glass [26]. To prevent wetting of the surface and flooding of membrane pores, ceramic materials usually require surface modification to increase hydrophobicity [27][28][29]. Most polymeric membrane materials are hydrophobic but are prone to react with ozone.…”

Section: Introductionmentioning

confidence: 99%

A Single Tube Contactor for Testing Membrane Ozonation

Zoumpouli¹,

Baker²,

Taylor³

et al. 2018

Preprint

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A membrane ozonation contactor was built to investigate ozonation using tubular membranes and to inform computational fluid dynamics (CFD) studies. Non-porous tubular polydimethylsiloxane (PDMS) membranes of 1.0 – 3.2 mm inner diameter were tested at ozone gas concentrations of 110 – 200 g m−3 and liquid side velocities of 0.002 m s−1 – 0.226 m s−1. The dissolved ozone concentration could be adjusted to up to 14 mg O3 L−1 and increased with decreasing membrane diameter and liquid side velocity. Experimental mass transfer coefficients and molar fluxes of ozone were 1.1∙10−5 mol m−2 s−1 and 2.4∙10−6 m s−1, respectively, for the smallest membrane. CFD modelling could predict the final ozone concentrations but slightly overestimated mass transfer coefficients and molar fluxes of ozone. Model contaminant degradation experiments and UV absorption measurements of ozonated water samples in both ozone (O3) and peroxone (H2O2/O3) reaction systems in pure water, river water, wastewater effluent and solutions containing humic acid show that the contactor system can be used to generate information on the reactivity of ozone with different water matrices. Combining simple membrane contactors with CFD allows predicting ozonation performance under a variety of conditions leading to improved bubble-less ozone systems for water treatment.

show abstract

Novel Water Treatment Processes Based on Hybrid Membrane-Ozonation Systems: A Novel Ceramic Membrane Contactor for Bubbleless Ozonation of Emerging Micropollutants

Cited by 33 publications

References 56 publications

RETRACTED: Preparation and characterization of multilayer mesoporous alumina nano membrane via sol–gel method using new precursors

RETRACTED: Preparation and characterization of multilayer mesoporous alumina nano membrane via sol–gel method using new precursors

A Single Tube Contactor for Testing Membrane Ozonation

A Single Tube Contactor for Testing Membrane Ozonation

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