Eletrocoagulação de águas residuais domésticas: Revisão sistemática dos efeitos operacionais
DOI:
https://doi.org/10.33448/rsd-v14i5.48700Palavras-chave:
Eletrocoagulação, Águas residuais, Sustentabilidade, Poluição, Intensidade elétrica, Tecnologia ambiental.Resumo
O objetivo desta revisão é avaliar a eficácia da eletrocoagulação (EC) como uma alternativa sustentável para o processo de purificação de efluentes domésticos, considerando seu potencial na remoção de contaminantes, viabilidade técnica e econômica, e impacto na proteção da saúde pública e dos ecossistemas. Esta revisão sistemática avalia a EC como uma opção sustentável para o tratamento de águas residuais domésticas, com ênfase na remoção de poluentes. Foram analisados o design de reatores, materiais dos eletrodos, parâmetros operacionais e desafios econômicos e tecnológicos com base na literatura existente. Os resultados revelam que a EC alcança eficiências de remoção superiores a 90% para demanda química de oxigênio, turbidez e matéria orgânica, especialmente com eletrodos de alumínio ou combinações de alumínio e ferro. No entanto, o pH, a intensidade elétrica e o design do reator são fatores críticos para o seu desempenho. Embora os custos operacionais sejam superiores aos dos métodos convencionais, a EC se destaca por sua versatilidade e menor geração de lodo. Este estudo conclui que a EC apresenta um potencial significativo para a purificação de efluentes domésticos, embora sua viabilidade industrial exija a otimização do consumo de energia e a redução de custos.
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