New large solar photocatalytic plant: set-up and preliminary results

Malato, Sixto; Blanco, J.; Vidal, Alfonso; Fernández, P.; Cáceres, José; Trincado, Pablo; Oliveira, J. Correia de; Vincent, Martín

doi:10.1016/s0045-6535(01)00220-x

Cited by 54 publications

(35 citation statements)

References 17 publications

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“…One of the reasons for this is that small scale studies often fail to take into account the effect of other substances in the wastewaters (Doll and Frimmel, 2005b). Malato et al (2002) described the experimental systems necessary for performing pilot-plant-scale solar photocatalytic experiments and outlined the basic components of these pilot plants and the fundamental parameters related to solar photocatalysis reactions. The pilot plant has been used successfully to treat pharmaceuticals along with other organic contaminants in wastewater (Perez-Estrada, et al, 2005b).…”

Section: Photocatalytic Reactors and Reaction Kineticsmentioning

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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Section: Photocatalytic Reactors and Reaction Kineticsmentioning

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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“…A utilização econômica de processos baseados no aproveitamento da radiação solar no tratamento de águas residuárias vem sendo proposta tendo em vista seu baixo custo, principalmente em países com elevado grau de insolação [2][3][4][5][6][7][8][9][10][11][12][13][14][15]19,20 . A tecnologia já se encontra disponível 2,5,7,8,19,21,22 . Infelizmente, embora plantas-piloto de tratamento em larga escala tenham comprovado sua viabilidade 2,19,21,22 , a aplicação prática tem sido vista com excessiva cautela pelos reais interessados.…”

Section: Introductionunclassified

“…A tecnologia já se encontra disponível 2,5,7,8,19,21,22 . Infelizmente, embora plantas-piloto de tratamento em larga escala tenham comprovado sua viabilidade 2,19,21,22 , a aplicação prática tem sido vista com excessiva cautela pelos reais interessados. Por essa razão, projetos com o envolvimento de potenciais usuários são importantes no sentido de reduzir as barreiras à sua implementação.…”

Section: Introductionunclassified

“…Nos reatores CPC, as superfícies refletoras são moldadas no formato de involuta, posicionadas ao redor dos tubos cilíndricos de vidro borossilicato (Figuras 1 e 2) por onde circula o efluente a ser tratado 2,19 . Embora não concentrem a radiação solar incidente, esses reatores sobressaem-se pelo seu baixo custo, por não necessitarem de partes móveis, serem de fácil instalação e manutenção, e apresentarem bom aproveitamento da radiação solar incidente, inclusive das componentes difusas 2,7,8,19,22,23 .…”

Section: Introductionunclassified

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Construção e estudos de perfomance de um reator fotoquímico tipo CPC ("Compound Parabolic Concentrator")

Duarte¹,

Xavier²,

Souza³

et al. 2005

Quím. Nova

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Recebido em 13/1/04; aceito em 27/1/05; publicado na web em 30/6/05 CONSTRUCTION AND PERFORMANCE STUDIES OF A CPC TYPE PHOTOCHEMICAL REACTOR. A CPC (Compound Parabolic Concentrator) reactor was projected and constructed aiming to promote the degradation of the organic matter present in considerable volumes of aqueous effluents, under the action of solar radiation. The essays were done using a model effluent which consists of a mixture of fragments of a sodium salt of lignosulphonic acid possessing a mean molecular weigth of 52,000 Daltons, and a real effluent, from a chip board industry. The volume of effluent in each test was about 50 L. The tests involved heterogeneous (TiO 2 P25 Degussa and formulations made from the association of TiO 2 with a photosensitiser), and homogeneous (thermal and photochemical Fenton reactions) catalysis of the effluents. The results demonstrate the viability of application of this kind of reactor even when the load of organic pollutants is high.

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“…In total, 0.2 g/L slurry TiO 2 was used to degrade aqueous cyanide solution having an initial concentration of 50 mg/L. Complete degradation of Cyanide could be achieved in LPP after a normalized illumination time (t 30W ) of 1.5 h. Only 76% degradation could be achieved in the demonstration plant after t 30W of two hours [54]. Lower treatment efficiency achieved by the demonstration plant was partially attributed to difference of water matrix.…”

Section: Compound Parabolic Concentratormentioning

confidence: 99%

TiO2 Solar Photocatalytic Reactor Systems: Selection of Reactor Design for Scale-up and Commercialization—Analytical Review

2016

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For the last four decades, viability of photocatalytic degradation of organic compounds in water streams has been demonstrated. Different configurations for solar TiO 2 photocatalytic reactors have been used, however pilot and demonstration plants are still countable. Degradation efficiency reported as a function of treatment time does not answer the question: which of these reactor configurations is the most suitable for photocatalytic process and optimum for scale-up and commercialization? Degradation efficiency expressed as a function of the reactor throughput and ease of catalyst removal from treated effluent are used for comparing performance of different reactor configurations to select the optimum for scale-up. Comparison included parabolic trough, flat plate, double skin sheet, shallow ponds, shallow tanks, thin-film fixed-bed, thin film cascade, step, compound parabolic concentrators, fountain, slurry bubble column, pebble bed and packed bed reactors. Degradation efficiency as a function of system throughput is a powerful indicator for comparing the performance of photocatalytic reactors of different types and geometries, at different development scales. Shallow ponds, shallow tanks and fountain reactors have the potential of meeting all the process requirements and a relatively high throughput are suitable for developing into continuous industrial-scale treatment units given that an efficient immobilized or supported photocatalyst is used.

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New large solar photocatalytic plant: set-up and preliminary results

Cited by 54 publications

References 17 publications

Treatment options for wastewater effluents from pharmaceutical companies

Treatment options for wastewater effluents from pharmaceutical companies

Construção e estudos de perfomance de um reator fotoquímico tipo CPC ("Compound Parabolic Concentrator")

TiO2 Solar Photocatalytic Reactor Systems: Selection of Reactor Design for Scale-up and Commercialization—Analytical Review

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