Sun Driven Photochemical Reaction in a Horizontal Plane Slab

Stramigioli, Carlo; Santarelli, Francesco; Spiga, G.; Vestrucci, Paolo

doi:10.1080/00986448208911097

Cited by 8 publications

(7 citation statements)

References 8 publications

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“…The analysis was centered in the effects of scattering, initial optical thickness, and boundary reflectivity on the conversion of a batch reactor. Stramigioli et al (1982) used the same geometry but for a reactor irradiated by parallel beams of radiation having a direction that changes with time (simulating the direct component of solar irradiation). The model was applied to a batch reactor.…”

Section: Applications To Homogeneous Systemsmentioning

confidence: 99%

Photoreactor Analysis and Design: Fundamentals and Applications

Cassano¹,

Martín²,

Brandi³

et al. 1995

Ind. Eng. Chem. Res.

407

355

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Section: Applications To Homogeneous Systemsmentioning

confidence: 99%

Photoreactor Analysis and Design: Fundamentals and Applications

Cassano¹,

Martín²,

Brandi³

et al. 1995

Ind. Eng. Chem. Res.

407

355

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“…Actually, not only numerical difficulties are encountered but, what is more important, the volumetric absorption coefficient (#c), the volumetric scattering coefficient ( ), and the scattering distribution function or angularly dependent phase function (p) are difficult to know. The radiative transfer equation for participating and reacting media has been recently revisited [Cassano et al (1994)], but the most valuable contributions can be found in a series of theoretical papers published by Santarelli and co-workers [Spadoni et al (1978[Spadoni et al ( , 1980, Stramigioli et al (1978Stramigioli et al ( , 1982, Santarelli et al (1982), Santarelli (1983), etc. ]; unfortunately these works were not validated with experiments, nor have they provided an answer to the lack of information about the required values of the system parameters ( , ov, and p).…”

Section: Problem Statementmentioning

confidence: 99%

Novel Reactor for Photocatalytic Kinetic Studies

Cabrera¹,

Alfano²,

Cassano³

1994

Ind. Eng. Chem. Res.

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In the past decade an increasing interest in photocatalytic kinetic studies has been observed, particularly related to promising remediation processes for air and water pollution. Normally, the reacting system includes a suspended solid semiconductor and one or two fluid phases. One of the major problems lies in the difficulties associated with the proper evaluation of the absorbed radiant energy due to the unavoidable system heterogeneities that produce light scattering. A novel form of reactor, combined with a radiation distribution model, has been used to evaluate the volumetric rate of energy absorption during the photocatalytic oxidation of trichloroethylene in water using a suspension of titanium dioxide. All the required information to solve the radiative transfer equation in a one-dimensional photocatalytic reactor is obtained either from radiation theory or from specially designed experiments. The proposed approach permits a correct description of the radiation field inside the heterogeneous reactor and, consequently, a precise accounting of the absorbed photons. The quantum yield concept is revisited to propose an appropriate and equivalent property for solid photocatalyzed systems. Afterward, the reactor and the model were used to evaluate heterogeneous-system quantum efficiencies.

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“…The analysis is based on the developmentsand the specialization for this class of processessof the approach presented by Stramigioli et al 13 for the general case of a photochemical direct reaction (absorption by the reacting species) in a quiescent fluid confined within a plane slab exposed to solar radiation.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Processes Using Solar Radiation. Modeling of Photodegradation of Contaminants in Polluted Waters

Martín

Sgalari

Santarelli

1999

Ind. Eng. Chem. Res.

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Presented here is an analysis of feasibility for a photocatalytic process which uses solar radiation in a batch or continuous slab reactor. The assumed geometry is representative of the simplest conceivable arrangement which can be used, and it is also the most suitable one to investigate the role of the relevant parameters in affecting radiative transfer and progress of the reaction. A procedure is developed for a preliminary investigation of the feasibility of these processes, and results are presented for situations typical of the photocatalytic degradation of toxic compounds in aqueous streams.

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Sun Driven Photochemical Reaction in a Horizontal Plane Slab

Cited by 8 publications

References 8 publications

Photoreactor Analysis and Design: Fundamentals and Applications

Photoreactor Analysis and Design: Fundamentals and Applications

Novel Reactor for Photocatalytic Kinetic Studies

Photocatalytic Processes Using Solar Radiation. Modeling of Photodegradation of Contaminants in Polluted Waters

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