The Experts below are selected from a list of 24633 Experts worldwide ranked by ideXlab platform
Volodymyr V. Tarabara - One of the best experts on this subject based on the ideXlab platform.
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virus removal and inactivation in a hybrid Microfiltration uv process with a photocatalytic membrane
Separation and Purification Technology, 2015Co-Authors: Elodie V Pasco, Irene Xagoraraki, Volodymyr V. TarabaraAbstract:Abstract The study describes the first application of photocatalytic membranes for virus removal and inactivation. In the proposed hybrid treatment process, a UV lamp and a Microfiltration membrane are positioned in foci of two parabolic reflectors facing each other and UV light is focused on a photocatalyst-coated outer surface of the microfilter. The ceramic tubular membrane (nominal pore size of 0.8 μm) is operated in an inside-out geometry. To evaluate virus removal and inactivation efficiency of the hybrid photocatalytic Microfiltration–UV process, bacteriophage P22 is used as a model virus. The kinetics of P22 inactivation by direct UV is found to fit Collins–Selleck model with the coefficient of specific lethality Λ CS = 1.972. Batch UV disinfection and crossflow filtration tests with membranes coated or uncoated with a layer of photocatalyst show that the hybrid photocatalytic Microfiltration–UV process is considerably more effective in inactivating the virus (LRV = 5.0 ± 0.7) than the constituent processes – UV disinfection and Microfiltration – applied in series (aggregate LRV = 2.0 ± 0.5) or together but without the photocatalytic coating on the membrane (LRV = 2.4 ± 0.2). Potential applications of the proposed treatment process include disinfection of turbid, high fouling potential and high flow rate streams.
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Inorganic Membrane Filtration, Modeling Microfiltration and Ultrafiltration
Encyclopedia of Membrane Science and Technology, 2013Co-Authors: Weixing Li, Yiqun Fan, Wanqin Jin, Nanping Xu, Eric M.v. Hoek, Volodymyr V. TarabaraAbstract:Inorganic membranes for Microfiltration and ultrafiltration are mainly ceramic based. Ceramic membranes are sintered with metal oxide powders, and the pores formed among particles provide the separation media. This article presents a basic framework for modeling Microfiltration and ultrafiltration and to optimize the membrane design. Here, the relationship between water permeability and membrane microstructure parameters (pore size, thickness, and porosity) was built up. Then, the model was developed for Microfiltration and ultrafiltration of micrometer-sized and nanosized particle suspensions, respectively. The predicted results show good agreement with experimental data of filtration flux with time.
Elodie V Pasco - One of the best experts on this subject based on the ideXlab platform.
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virus removal and inactivation in a hybrid Microfiltration uv process with a photocatalytic membrane
Separation and Purification Technology, 2015Co-Authors: Elodie V Pasco, Irene Xagoraraki, Volodymyr V. TarabaraAbstract:Abstract The study describes the first application of photocatalytic membranes for virus removal and inactivation. In the proposed hybrid treatment process, a UV lamp and a Microfiltration membrane are positioned in foci of two parabolic reflectors facing each other and UV light is focused on a photocatalyst-coated outer surface of the microfilter. The ceramic tubular membrane (nominal pore size of 0.8 μm) is operated in an inside-out geometry. To evaluate virus removal and inactivation efficiency of the hybrid photocatalytic Microfiltration–UV process, bacteriophage P22 is used as a model virus. The kinetics of P22 inactivation by direct UV is found to fit Collins–Selleck model with the coefficient of specific lethality Λ CS = 1.972. Batch UV disinfection and crossflow filtration tests with membranes coated or uncoated with a layer of photocatalyst show that the hybrid photocatalytic Microfiltration–UV process is considerably more effective in inactivating the virus (LRV = 5.0 ± 0.7) than the constituent processes – UV disinfection and Microfiltration – applied in series (aggregate LRV = 2.0 ± 0.5) or together but without the photocatalytic coating on the membrane (LRV = 2.4 ± 0.2). Potential applications of the proposed treatment process include disinfection of turbid, high fouling potential and high flow rate streams.
Chettiyappan Visvanathan - One of the best experts on this subject based on the ideXlab platform.
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Membrane technology for surface water treatment: advancement from Microfiltration to membrane bioreactor
Reviews in Environmental Science and Bio Technology, 2017Co-Authors: Lu Li, Chettiyappan VisvanathanAbstract:Following the rapid proliferation of organic pollutants in the surface water, the application of Microfiltration technology has been extensively studied for its treatment since the 1990s. Given that the conventional treatment processes were unable to treat the excessive dissolved organic compounds, Microfiltration technologies have gained momentum as effective solutions to treat the surface water. The efficacy of low-pressure membrane filtration technologies such as Microfiltration and ultrafiltration has been under scrutiny ever since, and numerous research studies have aimed at enhancing their capabilities to reject the suspended solids and organic matters. This paper reviews the development trajectory of membrane technology, ranging from Microfiltration to membrane bioreactors, for treating dissolved organic matters in surface water and their future potential. This is a critical review of the physicochemical and biological options such as, but not limited to, pretreatment of water using coagulation, ozonation, adsorption and/or a combination of these. On the whole, it is concluded that the membrane bioreactor system, which combines biological process and physical rejection, showed high potential in treating polluted surface water, which needs to be further investigated extensively to promote its application in water treatment plants.
Irene Xagoraraki - One of the best experts on this subject based on the ideXlab platform.
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virus removal and inactivation in a hybrid Microfiltration uv process with a photocatalytic membrane
Separation and Purification Technology, 2015Co-Authors: Elodie V Pasco, Irene Xagoraraki, Volodymyr V. TarabaraAbstract:Abstract The study describes the first application of photocatalytic membranes for virus removal and inactivation. In the proposed hybrid treatment process, a UV lamp and a Microfiltration membrane are positioned in foci of two parabolic reflectors facing each other and UV light is focused on a photocatalyst-coated outer surface of the microfilter. The ceramic tubular membrane (nominal pore size of 0.8 μm) is operated in an inside-out geometry. To evaluate virus removal and inactivation efficiency of the hybrid photocatalytic Microfiltration–UV process, bacteriophage P22 is used as a model virus. The kinetics of P22 inactivation by direct UV is found to fit Collins–Selleck model with the coefficient of specific lethality Λ CS = 1.972. Batch UV disinfection and crossflow filtration tests with membranes coated or uncoated with a layer of photocatalyst show that the hybrid photocatalytic Microfiltration–UV process is considerably more effective in inactivating the virus (LRV = 5.0 ± 0.7) than the constituent processes – UV disinfection and Microfiltration – applied in series (aggregate LRV = 2.0 ± 0.5) or together but without the photocatalytic coating on the membrane (LRV = 2.4 ± 0.2). Potential applications of the proposed treatment process include disinfection of turbid, high fouling potential and high flow rate streams.
Lu Li - One of the best experts on this subject based on the ideXlab platform.
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Membrane technology for surface water treatment: advancement from Microfiltration to membrane bioreactor
Reviews in Environmental Science and Bio Technology, 2017Co-Authors: Lu Li, Chettiyappan VisvanathanAbstract:Following the rapid proliferation of organic pollutants in the surface water, the application of Microfiltration technology has been extensively studied for its treatment since the 1990s. Given that the conventional treatment processes were unable to treat the excessive dissolved organic compounds, Microfiltration technologies have gained momentum as effective solutions to treat the surface water. The efficacy of low-pressure membrane filtration technologies such as Microfiltration and ultrafiltration has been under scrutiny ever since, and numerous research studies have aimed at enhancing their capabilities to reject the suspended solids and organic matters. This paper reviews the development trajectory of membrane technology, ranging from Microfiltration to membrane bioreactors, for treating dissolved organic matters in surface water and their future potential. This is a critical review of the physicochemical and biological options such as, but not limited to, pretreatment of water using coagulation, ozonation, adsorption and/or a combination of these. On the whole, it is concluded that the membrane bioreactor system, which combines biological process and physical rejection, showed high potential in treating polluted surface water, which needs to be further investigated extensively to promote its application in water treatment plants.
