Resumo

MONTALVAN-ESTRADA, Adelmo et al. State of the art in the development of photocatalytic membrane reactors, for the treatment of persistent organic pollutants in water and wastewaters. RTQ [online]. 2019, vol.39, n.2, pp. 421-443. ISSN 2224-6185.

ABSTRACT

The state of the art in the development of photocatalytic membrane reactors, for the treatment of persistent organic pollutants in water and wastewater, was identified through a documentary investigation. The review covered the following aspects: characteristics of the membranes used in the photocatalytic process, influence of the operational parameters in the photocatalytic process, configurations and designs of the photocatalytic membrane reactors, and the treatment of persistent organic pollutants with the help of these reactors. A comparison of the main types of membranes, which are used in photocatalytic reactors, was made; it was shown that membrane fouling is a critical phenomenon in the use of these materials. The main variables that influence the operation of photocatalytic membrane reactors were analyzed: reactor design, wavelength and light intensity, photocatalyst load, initial concentration of the reactant, temperature and pH, among others. The advantages and disadvantages of the photocatalytic reactors with immobilized TiO2 in the membrane were shown, being this design one of the most used. Finally, successful examples were shown, both at laboratory scale and at pilot scale, of the use of photocatalytic membrane reactors for the treatment of persistent organic pollutants, present in water and wastewater.

Palavras-chave : reactors; photocatalysis; membrane; persistent organic pollutants.

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