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Molecules 2017, 22(6), 945; doi:10.3390/molecules22060945

Integral Design Methodology of Photocatalytic Reactors for Air Pollution Remediation

1
Facultad de Ingeniería y Ciencias Hídricas, Universidad Nacional del Litoral and CONICET, Santa Fe 3000, Argentina
2
Instituto de Desarrollo Tecnológico para la Industria Química (CONICET-UNL), Santa Fe 3000, Argentina
*
Author to whom correspondence should be addressed.
Academic Editor: Pierre Pichat
Received: 22 March 2017 / Accepted: 31 May 2017 / Published: 7 June 2017
(This article belongs to the Special Issue Photon-involving Purification of Water and Air)
View Full-Text   |   Download PDF [2062 KB, uploaded 7 June 2017]   |  

Abstract

An integral reactor design methodology was developed to address the optimal design of photocatalytic wall reactors to be used in air pollution control. For a target pollutant to be eliminated from an air stream, the proposed methodology is initiated with a mechanistic derived reaction rate. The determination of intrinsic kinetic parameters is associated with the use of a simple geometry laboratory scale reactor, operation under kinetic control and a uniform incident radiation flux, which allows computing the local superficial rate of photon absorption. Thus, a simple model can describe the mass balance and a solution may be obtained. The kinetic parameters may be estimated by the combination of the mathematical model and the experimental results. The validated intrinsic kinetics obtained may be directly used in the scaling-up of any reactor configuration and size. The bench scale reactor may require the use of complex computational software to obtain the fields of velocity, radiation absorption and species concentration. The complete methodology was successfully applied to the elimination of airborne formaldehyde. The kinetic parameters were determined in a flat plate reactor, whilst a bench scale corrugated wall reactor was used to illustrate the scaling-up methodology. In addition, an optimal folding angle of the corrugated reactor was found using computational fluid dynamics tools. View Full-Text
Keywords: air pollution; photocatalytic reactors; radiation modeling; reactor optimization air pollution; photocatalytic reactors; radiation modeling; reactor optimization
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Passalía, C.; Alfano, O.M.; Brandi, R.J. Integral Design Methodology of Photocatalytic Reactors for Air Pollution Remediation. Molecules 2017, 22, 945.

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