Biofiltración de aguas residuales de industrias arroceras de San Jacinto de Yaguachi, Ecuador mediante cascarilla de arroz

Xavier Andrés Iturralde Jácome; Arturo Andrés Hernández Escobar

doi:10.46380/rias.vol5.e271

Autores

Xavier Andrés Iturralde Jácome Universidad Estatal del Sur de Manabí, Ecuador https://orcid.org/0000-0001-5506-7147
Arturo Andrés Hernández Escobar Universidad Estatal del Sur de Manabí, Ecuador

DOI:

https://doi.org/10.46380/rias.vol5.e271

Palavras-chave:

carbonização, carvão ativado, economia circular, eutrofização, poluição ambiental, sólidos totais

Resumo

Estima-se que no mundo mais de 80% dos efluentes gerados por atividades antrópicas são despejados diretamente no meio ambiente. A descarga dessas águas é um problema ainda não resolvido nas cidades, portanto, tecnologias econômicas são necessárias para serem implementadas em nível doméstico. Diante desse problema, o presente trabalho teve como objetivo avaliar a eficiência de um biofiltro utilizando substratos de carvão ativado e cinzas (produzidas a partir de casca de arroz) para o tratamento de efluentes domésticos. A ativação dos substratos foi realizada por meio de processos físico-químicos a temperaturas de 450 °C e com o uso de ácido fosfórico. Como resultado da biofiltração do efluente, as cinzas permitiram uma remoção de cor verdadeira (Pt-Co) de até 99%. O carvão ativado reduziu a turbidez em até 95.3%; enquanto o teor de sólidos totais praticamente não foi diminuído por nenhum dos substratos. Esta pesquisa está ligada à economia circular dada a utilização de um resíduo de produção como a casca de arroz.

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