Photodechlorination of PCB's in the presence of titanium dioxide in aqueous suspensions

Carey, John H.; Lawrence, John J.; Tosine, H.

doi:10.1007/bf01685575

Cited by 596 publications

(236 citation statements)

References 8 publications

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“…The application of photocatalysis to water treatment was first discussed by Carey et al in 1976 when they recognized the ability to degrade polychlorobiphenyls (PCBs) 78 . Semiconductor electronic properties are defined by having a filled valence band and an empty conduction band.…”

Section: Reactive/catalytic Ceramic Membranesmentioning

confidence: 99%

A review of water treatment membrane nanotechnologies

Pendergast

Hoek

2011

Energy Environ. Sci.

1,827

917

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We thank the reviewers for their insightful comments and we have revised the above referenced manuscript in response. In addition, we addressed each reviewer comment in an itemized fashion in the attached "Response to Reviewer Comments."We have uploaded high resolution (600 dpi minimum) TIF files for each image in the article. We have kept the images in color for the online version, but please convert these to grey-scale for the print version. We have ensured that no information is lost from the figure upon conversion.We feel we have adequately addressed all reviewer comments and hope that you will accept our review paper for publication in Energy & Environmental Science without further revision. Figure 6. Percolation Threshold was removed because it also seemed to provide superfluous detail. Section 3.2.1. Mixed Matrix MembranesSelections have been deleted due to excessive explanation of mixed matrix theory; the detail of background theory here appeared to be out of proportion with that in other sections. The important points from the deleted paragraphs have, however, been shortened and inserted into the present introduction so that major points are not lost. Also, it was re-emphasized that details about gas separation membranes were included only to show the past application and strength of these materials now being re-engineered for water treatment purposes. Section 3.3.3. Isoporous Block Copolymer MembranesSelections have been deleted, again when out of proportion detail in background explanation was found. Within the particular works cited and described, some specific details have been removed or minimized in order to highlight the most important achievement of each work. Lengthy block copolymer names have also been removed in most cases, in lieu of the type (i.e., tri-block, homopolymer) so that the individual methods described can be seen in a more general system framework. Some of the extensive deleted sections have been shortened/rewritten and inserted in the section so that significant points are not lost, but only the excess detail. DiscussionThe discussion section has been significantly lengthened and clarified. Each technology is summarized to shed light upon the benefits and hurdles of each material that led to its individual ranking in our system. Each score is justified and explained within our metric.Throughout the text, an effort was made to reduce excess detail and highlight the major hurdles achieved by each researcher cited. Primary accomplishments and future needs for each material were further emphasized throughout the body of this paper.Specific responses to the referees follows. RESPONSES TO REVIEWER COMMENTS REFEREE 1Within their extensive review the authors state that in their review "… the published literature describing … membrane technologies (i.e. nanotechnologies) is critically reviewed and discussed within the context of conventional membrane materials used in the relevant water treatment applications" and "a ranking system was developed …" (all citations from the Abstract) Yet...

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Section: Reactive/catalytic Ceramic Membranesmentioning

confidence: 99%

A review of water treatment membrane nanotechnologies

Pendergast

Hoek

2011

Energy Environ. Sci.

1,827

917

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“…Radicals formed degrade impurities in the water relatively unselectively, reacting with impurities in the wastewater as well as the target pharmaceuticals (Lhomme et al, 2008). Since the degradation of chlorobipenyls and biph enyls fr om aqueous media using TiO 2 photocatalysis was first reported (Carey et al, 1976) the number of publications on the removal of micropollutants from aqueous media using TiO 2 has grown considerably (Doll and Frimmel, 2005a, b, c;Pérez-Estrada et al, 2005a). Titania is the most widely investigated of the heterogeneous photocatalyst due to its cost effectiveness, iner t nature and ph otostability (Gaya and Abdullah, 2008).…”

Section: Tio 2 Photocatalysismentioning

confidence: 99%

Treatment options for wastewater effluents from pharmaceutical companies

Deegan

Basha

Nolan

et al. 2011

Int. J. Environ. Sci. Technol.

292

126

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“…Since the first study on the photocatalytic oxidation of organic compounds in aqueous system by Carey in 1976 [1], there have intensive investigations on the application of heterogeneous catalysis for the treatment of hazardous wastes [2,3]. Photocatalysis is based on the reactive properties of photogenerated electron-hole pairs.…”

Section: Introductionmentioning

confidence: 99%