Oil sludge treatment by photocatalysis applying black and white light

Rocha, Otidene Rossiter Sá da; Dantas, Renato F.; Duarte, Marta Maria Menezes Bezerra; Duarte, M. M. L.; Silva, Valdinete Lins da

doi:10.1016/j.cej.2009.10.050

Cited by 101 publications

(27 citation statements)

References 20 publications

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“…Rocha et al [22] carried out oil sludge treatment using heterogeneous photocatalysis (H 2 O 2 /UV/TiO 2 ) by applying black and white light reactors. Heterogeneous photocatalysis provided efficient degradation and mineralization of a large part of the organic matter in the oil sludge.…”

Section: Historical Backgroundmentioning

confidence: 99%

A review of TiO2 nanoparticles

2011

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Climate change and the consumption of non-renewable resources are considered as the greatest problems facing humankind. Because of this, photocatalysis research has been rapidly expanding. TiO 2 nanoparticles have been extensively investigated for photocatalytic applications including the decomposition of organic compounds and production of H 2 as a fuel using solar energy. This article reviews the structure and electronic properties of TiO 2 , compares TiO 2 with other common semiconductors used for photocatalytic applications and clarifies the advantages of using TiO 2 nanoparticles. TiO 2 is considered close to an ideal semiconductor for photocatalysis but possesses certain limitations such as poor absorption of visible radiation and rapid recombination of photogenerated electron/hole pairs. In this review article, various methods used to enhance the photocatalytic characteristics of TiO 2 including dye sensitization, doping, coupling and capping are discussed. Environmental and energy applications of TiO 2 , including photocatalytic treatment of wastewater, pesticide degradation and water splitting to produce hydrogen have been summarized. Historical backgroundThe growth of industry worldwide has tremendously increased the generation and accumulation of waste byproducts. In general, the production of useful products has been focused on and the generation of waste byproducts has been largely ignored. This has caused severe environmental problems that have become a major concern. Researchers all over the world have been working on various approaches to address this issue. Photoinduced processes have been studied and various applications have been developed. One important technique for removing industrial waste is the use of light energy (electromagnetic radiation) and particles sensitive to this energy to mineralize waste which aids in its removal from solution. Titanium dioxide (TiO 2 ) is considered very close to an ideal semiconductor for photocatalysis because of its high stability, low cost and safety toward both humans and the environment.*Corresponding author (email: shipra.mital@gmail.com)In 1964, Kato et al.[1] published their work on the photocatalytic oxidation of tetralin (1,2,3,4-tetrahydronaphthalene) by a TiO 2 suspension, which was followed by McLintock et al. [2] investigating the photocatalytic oxidation of ethylene and propylene in the presence of oxygen adsorbed on TiO 2 . However, the most important discovery that extensively promoted the field of photocatalysis was the "Honda-Fujishima Effect" first described by Fujishima and Honda in 1972 [3]. This well-known chemical phenomenon involves electrolysis of water, which is related to photocatalysis. Photoirradiation of a TiO 2 (rutile) single crystal electrode immersed in an aqueous electrolyte solution induced the evolution of oxygen from the TiO 2 electrode and the evolution of hydrogen from a platinum counterelectrode when an anodic bias was applied to the TiO 2 working electrode. In 1977, Frank and Bard [4] examined the reduction of ...

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Section: Historical Backgroundmentioning

confidence: 99%

A review of TiO2 nanoparticles

2011

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“…2015, their generation of sludge is of concern as indicated by [6]. This is because, the management of this waste is problematic and requires proper disposal and sufficient treatment in order not to pose serious threat to the environment and health [10,14].…”

Section: Volumes Of Daily Oily Sludge Generation/tonmentioning

confidence: 99%

A Review of the Impacts and Management of Oily Sludge in the Oil and Gas Industry

Kuranchie¹

2017

IJRET

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“…Semiconductor photocatalysis has grown significantly in the last three decades, and has been applied to a diverse array of environmental problems including air [1,2], potable and wastewater treatment [3,4], as well as photo-splitting of water to produce hydrogen gas [5][6][7], nitrogen fixation [8][9][10], microbe destruction [11,12] and the remediation of oily waste [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Development of a doped titania immobilised thin film multi tubular photoreactor

Adams¹,

Skillen²,

McCullagh³

et al. 2013

Applied Catalysis B: Environmental

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CopyrightItems in 'OpenAIR@RGU', Robert Gordon University Open Access Institutional Repository, are protected by copyright and intellectual property law. If you believe that any material held in 'OpenAIR@RGU' infringes copyright, please contact openair-help@rgu.ac.uk with details. The item will be removed from the repository while the claim is investigated. "NOTICE: this is the author's version of a work that was accepted for publication in Applied Catalysis B: Environmental. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in APPLIED CATALYSIS B: ENVIRONMENTAL, [VOL 130, (2013) ABSTRACTThis paper describes a novel doped titania immobilised thin film tubular photoreactor which has been developed for use with liquid, vapour or gas phase media. The current approach to photocatalyst and photoreactor development is firmly based on the principles of surface area. This dictate greatly limits the applicability of any semi-conductor photocatalyst in industrial applications, as a large surface area equates to a powder catalyst. This work aims to show that the development of a thin film coating, doped with a rare earth element, and a novel photoreactor design produces a photocatalytic degradation of a model pollutant (Methyl Orange) equal to that of P25 TiO 2 . It will show that doped thin film tubes in a novel reactor configuration can produce a degradation rate of 95 % after 90 minutes under UV irradiation and 70 % under visible irradiation with no downstream processing required. The use of lanthanide doping is reported here in the titania sol gel as it is thought to increase the electron hole separation therefore widening the potential useful wavelengths within the electromagnetic spectrum. Increasing doping from 0.5 % to 1.0 % increased photocatalytic degradation by ~17 % under visible irradiation. A linear relationship has been seen between increasing reactor volume and degradation which would not normally be observed in a typical suspended reactor system.

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Oil sludge treatment by photocatalysis applying black and white light

Cited by 101 publications

References 20 publications

A review of TiO2 nanoparticles

A review of TiO2 nanoparticles

A Review of the Impacts and Management of Oily Sludge in the Oil and Gas Industry

Development of a doped titania immobilised thin film multi tubular photoreactor

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