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Hybrid Advanced Oxidation Processes (Aop) and Nanocomposite-Based Membrane Technology for Water and Wastewater Treatment.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Hybrid Advanced Oxidation Processes (Aop) and Nanocomposite-Based Membrane Technology for Water and Wastewater Treatment./
作者:	Koutahzadeh, Negin.
面頁冊數:	1 online resource (207 pages)
附註:	Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.
Contained By:	Dissertation Abstracts International78-10B(E).
標題:	Chemical engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9781369809671

Hybrid Advanced Oxidation Processes (Aop) and Nanocomposite-Based Membrane Technology for Water and Wastewater Treatment.
Koutahzadeh, Negin.

Hybrid Advanced Oxidation Processes (Aop) and Nanocomposite-Based Membrane Technology for Water and Wastewater Treatment. - 1 online resource (207 pages)

Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

Water pollution is a major global problem. Within this perspective, organic pollutants are one of the major groups of toxic and carcinogenic contaminants which due to their complex structures show resistance against biodegradation processes. Conventional treatment methods are not efficient enough for removing them from aqueous solutions or make them less toxic. The use of a "Pulsed Corona Discharge, PCD" reactor is proposed as a novel approach for decomposition of Acid black 1 as a representative of synthetic organic azo dyes from water. The PCD-based advanced oxidation technology, with a point-to-point configuration of the electrodes immersed in the aqueous solution, was used for decomposing Acid black 1 (AB1). The effects of electrical field frequencies (60 and 120 Hz) and electrode gap spaces (2, 4 and 6 mm) on decomposition of AB1 were investigated. Also, the effect of the catalytic properties of titanium dioxide nanoparticles on the treatment process of the PCD reactor was investigated. Different concentrations of TiO2 NPs (0.075, 0.3, 0.8 and 3 gL -1) were tested. Finally, the PCD as an oxidation process was compared with the photocatalytic processes of UV, UV/H2O2 and UV/TiO2 in terms of removing AB1 from an aqueous solution, and promising results were reported. Advanced oxidation process can be integrated with other water and wastewater treatment methods to overcome the drawbacks related to the individual technologies. In this work, UV/H2O 2 (AOP) is used as a pretreatment for improving the efficiency of membrane filtration for water treatment focusing water reuse. Membrane fouling is an important concern for membrane filtration technology for water treatment. Performance of a hybrid UV/H2O2--nanocomposite membrane (UF) system for natural organic matters (humic acid) and synthetic organic matters (AB1) removal in a water treatment process was studied. Different mixed matrix membranes embedded with titanium dioxide (TiO2) nanoparticles, multi-walled carbon nanotubes (MWCNTs) were fabricated by the phase inversion method. Scanning electron microscopy (SEM), Atomic force microscopy (AFM) and water contact angle measurements were conducted for the membrane characterization. UV/H2O2 pretreatment changed the physicochemical properties of humic acid (HA) aggregates. The oxidation pretreatment alone improved flux decline at 120 min from 21% to 80% and increased the flux recovery ratio (FRR%) from 58% to 80% for the pure Polysulfone (PSF). The oxidative pretreatment also improved purification for the PSF/TiO2 nanocomposite membranes. The flux decline improved from 81% to 95% with only a slight improvement on the 94% FRR increasing to about 99% FRR. UV/H2O2 pretreatment of the AB1 solution resulted in enhanced Total Organic Carbon (TOC) rejection, decolorization, and enhanced antifouling membrane behavior.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369809671Subjects--Topical Terms:

555952
Chemical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Hybrid Advanced Oxidation Processes (Aop) and Nanocomposite-Based Membrane Technology for Water and Wastewater Treatment.
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500 $a Adviser: Pedro Arce.
502 $a Thesis (Ph.D.) $c Tennessee Technological University $d 2017.
504 $a Includes bibliographical references
520 $a Water pollution is a major global problem. Within this perspective, organic pollutants are one of the major groups of toxic and carcinogenic contaminants which due to their complex structures show resistance against biodegradation processes. Conventional treatment methods are not efficient enough for removing them from aqueous solutions or make them less toxic. The use of a "Pulsed Corona Discharge, PCD" reactor is proposed as a novel approach for decomposition of Acid black 1 as a representative of synthetic organic azo dyes from water. The PCD-based advanced oxidation technology, with a point-to-point configuration of the electrodes immersed in the aqueous solution, was used for decomposing Acid black 1 (AB1). The effects of electrical field frequencies (60 and 120 Hz) and electrode gap spaces (2, 4 and 6 mm) on decomposition of AB1 were investigated. Also, the effect of the catalytic properties of titanium dioxide nanoparticles on the treatment process of the PCD reactor was investigated. Different concentrations of TiO2 NPs (0.075, 0.3, 0.8 and 3 gL -1) were tested. Finally, the PCD as an oxidation process was compared with the photocatalytic processes of UV, UV/H2O2 and UV/TiO2 in terms of removing AB1 from an aqueous solution, and promising results were reported. Advanced oxidation process can be integrated with other water and wastewater treatment methods to overcome the drawbacks related to the individual technologies. In this work, UV/H2O 2 (AOP) is used as a pretreatment for improving the efficiency of membrane filtration for water treatment focusing water reuse. Membrane fouling is an important concern for membrane filtration technology for water treatment. Performance of a hybrid UV/H2O2--nanocomposite membrane (UF) system for natural organic matters (humic acid) and synthetic organic matters (AB1) removal in a water treatment process was studied. Different mixed matrix membranes embedded with titanium dioxide (TiO2) nanoparticles, multi-walled carbon nanotubes (MWCNTs) were fabricated by the phase inversion method. Scanning electron microscopy (SEM), Atomic force microscopy (AFM) and water contact angle measurements were conducted for the membrane characterization. UV/H2O2 pretreatment changed the physicochemical properties of humic acid (HA) aggregates. The oxidation pretreatment alone improved flux decline at 120 min from 21% to 80% and increased the flux recovery ratio (FRR%) from 58% to 80% for the pure Polysulfone (PSF). The oxidative pretreatment also improved purification for the PSF/TiO2 nanocomposite membranes. The flux decline improved from 81% to 95% with only a slight improvement on the 94% FRR increasing to about 99% FRR. UV/H2O2 pretreatment of the AB1 solution resulted in enhanced Total Organic Carbon (TOC) rejection, decolorization, and enhanced antifouling membrane behavior.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Chemical engineering. $3 555952
650 4 $a Environmental engineering. $3 557376
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