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

Authors

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

Keywords:

activated carbon, carbonization, circular economy, environmental pollution, eutrophication, total solids

Abstract

It is estimated that in the world more than 80% of wastewater generated by anthropogenic activities is discharged directly into the environment. The discharge of these waters is a problem still unresolved in cities, and therefore economic technologies are required to be implemented at the domestic level. Given this problem, the present work aimed to evaluate the efficiency of a biofilter using activated carbon and ash substrates (produced from rice husks) for the treatment of domestic wastewater. The activation of the substrates was carried out by means of physicochemical processes at temperatures of 450 °C and with the use of phosphoric acid. As a result of the biofiltration of the wastewater, the ash allowed a true color (Pt-Co) removal of up to 99%. Activated carbon reduced turbidity up to 95.3%; while the content of total solids was practically not decreased by any of the substrates. This research is linked to the circular economy, given the use of a production residue such as rice husk.

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