Application of Slurry Type Photocatalytic Oxidation‐Submerged Hollow Fiber Microfiltration Hybrid System for the Degradation of Bisphenol A (BPA)

Thiruvenkatachari, Ramesh; Kwon, Tae Ouk; Moon, Ilkyeong

doi:10.1080/01496390500333160

Cited by 39 publications

(31 citation statements)

References 28 publications

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“…Separation of TiO 2 particles from suspension is usually carried out through physicochemical processes like filtration, centrifugation and coagulation. There have been some attempts previously in coupling photocatalysis with membrane processes [41,43,[59][60][61][62][63].…”

Section: Photocatalytic Membrane Hybrid Systemmentioning

confidence: 99%

“…• Immersion well photoreactor: this is a stirred-tank reactor in which the catalyst is suspended in liquid while the lamp immersed in the suspension [39,41,42].…”

Section: Photoreactormentioning

confidence: 99%

“…In photocatalytic degradation using UV/TiO 2 , two modes of TiO 2 application are adopted: (1) TiO 2 immobilized on support materials, e.g., quartz sand, glass, glass wool matrix, ceramic membrane, noble metal etc., and (2) TiO 2 suspended in aqueous medium [41,[50][51][52][53]. In terms of technical application, immobilized TiO 2 is preferable [31] compared to dispersed TiO 2 because it does not need additional post-treatment for the recovery of catalyst particles after oxidation.…”

Section: Mode Of Tio 2 Additionmentioning

confidence: 99%

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A review on UV/TiO2 photocatalytic oxidation process (Journal Review)

Thiruvenkatachari

Vigneswaran

Moon

2008

Korean J. Chem. Eng.

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345

160

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Advanced oxidation processes (AOPs) with UV irradiation and photocatalyst titanium dioxide (TiO 2 ) are gaining growing acceptance as an effective wastewater treatment method. A comprehensive review of the UV-TiO 2 photocatalytic oxidation process was conducted with an insight into the mechanism involved, catalyst TiO 2 , irradiation sources, types of reactors, comparison between effective modes of TiO 2 application as immobilized on surface or as suspension, and photocatalytic hybrid membrane system. Photocatalytic degradation technique with titanium dioxide is generally applied for treating wastewater containing organic contaminants due to its ability to achieve complete mineralization of the organic contaminants under mild conditions such as ambient temperature and ambient pressure. Recently, photocatalysis studies using TiO 2 have been gaining attention for the degradation of persistent organic pollutants and other organic chemicals which are known to be endocrine disruptors. Treatment of wastewater in a titanium dioxide-suspended slurry reactor has been widely utilized due to its simplicity and enhanced degradation efficiency. However, this system requires separation of TiO 2 from water after the photocatalytic process. The final section of the manuscript focuses on the removal of TiO 2 using a membrane hybrid system. A two-stage coagulation and sedimentation process coupled with microfiltration hollow-fibre membrane process was found to achieve complete removal of TiO 2 , and the recovered TiO 2 can be reused for a photocatalytic process after regeneration.

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Section: Photocatalytic Membrane Hybrid Systemmentioning

confidence: 99%

“…• Immersion well photoreactor: this is a stirred-tank reactor in which the catalyst is suspended in liquid while the lamp immersed in the suspension [39,41,42].…”

Section: Photoreactormentioning

confidence: 99%

Section: Mode Of Tio 2 Additionmentioning

confidence: 99%

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A review on UV/TiO2 photocatalytic oxidation process (Journal Review)

Thiruvenkatachari

Vigneswaran

Moon

2008

Korean J. Chem. Eng.

Self Cite

345

160

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“…Investigations into the removal of bisphenol A from aqueous environments have studied the use of carbon adsorption [11], electrochemical treatments [12], oxidative coupling mediated by horseradish peroxidase [13], as well as photocatalytic oxidation [14][15][16], sonochemical oxidation [17], ozone oxidation [18], and enzymatic oxidation [19]. While each process offers some degree of effectiveness in the breakdown or removal of BPA in aqueous solutions, advanced oxidation processes (AOPs) such as radiolysis, photocatalysis, sonolysis, and UV-peroxide are often considered the best choice for the removal of recalcitrant compounds.…”

mentioning

confidence: 99%

Bisphenol A reactions with hydroxyl radicals: diverse pathways determined between deionized water and tertiary treated wastewater solutions

2009

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The oxidative reactions of bisphenol A (BPA) with radiolytically generated hydroxyl radicals were studied in both deionized water and tertiary treated wastewaters. In deionized water, bisphenol A reacts with the hydroxyl radical by addition to the aromatic ring, k = 6.9 9 10 9 (±0.2) M -1 s -1 , to eventually form the prominent, long-lived, hydroxylated intermediate product. In contrast, in tertiary treated water solutions, although the initial hydroxyl radical addition reaction occurs, the hydroxylation is averted, and a different mechanistic pathway ensues. The removal constant for the hydroxyl radical reaction with BPA is 0.45 ± 0.04 lmol/kGy, corresponding to an overall degradation efficiency of 76%.

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“…It is well known that photocatalysis with TiO 2 can significantly remove organic matter [6][7][8][9][10]. It was reported that organic removal by a photocatalysis hybrid system was similar to that by nanofiltration [11].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Characterization for Multi‐Component Organic Matters by Titanium Oxide (TiO₂) in Wastewater

Kim

Shon

2007

Separation Science and Technology

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Application of Slurry Type Photocatalytic Oxidation‐Submerged Hollow Fiber Microfiltration Hybrid System for the Degradation of Bisphenol A (BPA)

Cited by 39 publications

References 28 publications

A review on UV/TiO2 photocatalytic oxidation process (Journal Review)

A review on UV/TiO2 photocatalytic oxidation process (Journal Review)

Bisphenol A reactions with hydroxyl radicals: diverse pathways determined between deionized water and tertiary treated wastewater solutions

Adsorption Characterization for Multi‐Component Organic Matters by Titanium Oxide (TiO₂) in Wastewater

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Application of Slurry Type Photocatalytic Oxidation‐Submerged Hollow Fiber Microfiltration Hybrid System for the Degradation of Bisphenol A (BPA)

Cited by 39 publications

References 28 publications

A review on UV/TiO2 photocatalytic oxidation process (Journal Review)

A review on UV/TiO2 photocatalytic oxidation process (Journal Review)

Bisphenol A reactions with hydroxyl radicals: diverse pathways determined between deionized water and tertiary treated wastewater solutions

Adsorption Characterization for Multi‐Component Organic Matters by Titanium Oxide (TiO2) in Wastewater

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Product

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Adsorption Characterization for Multi‐Component Organic Matters by Titanium Oxide (TiO₂) in Wastewater