Remoção de microcystis aeruginosa e microcistinas por fotocatálise heterogênea: uma abordagem alternativa

• Ano de defesa: 2020
• Autor(a) principal: Noronha, Jolita Portela
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Dióxido de titânio; Tratamento de água; Cianobactérias; Cianotoxinas
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/53684

The quality of available surface fresh water has been declining worldwide in recent years, and the presence of cyanobacteria is a major contributor to this problem Cyanobacteria are resistant microorganisms in which they have been documented since the first record of life. Microcystis sp. is a very popular and dangerous genus of cyanobacteria, found in several water samples worldwide and characterized as a toxin producer. There are many cases of contamination in humans and animals by cyanotoxins, which can range from simple skin irritation to death. The conventional water treatments present limitations when applied in the presence of these microorganisms and compounds. Photocatalysis is a green process that involves reactive oxygen species in the mechanism, with a great potential to treat water and sewage, including the removal of cyanobacterial cells and their metabolites. TiO2 has been commonly used as a catalyst in photoreactions and it brings great advantages. This study shows water treatments involving studies and advances in photocatalysis, generating conclusions of needs and improment of the process to be used as a full-scale treatment.