Valorization of potato peels and eggshells wastes: Ca-biocomposite to remove and recover phosphorus from domestic wastewater

Astrid Quisperima, Sebastián Pérez, Elizabeth Flórez, Nancy Acelas

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

Potato peel (PP) waste are generated in huge quantities, causing environmental pollution and health problems. Therefore, obtaining value-added products from PP is a current research challenge. In this work, novel Ca-biocomposites for phosphorus (P) removal were prepared by pyrolysis (500–800 °C) using eggshell (ES) and PP (ES/PP = 1:2 ratio by weight). ESPP-700 (pyrolyzed at 700 °C), reached a Qmax of 174.8 mg P/g, while the application of Ca-biocomposites in domestic wastewater showed 85.96% of P removal. According to the pseudo-second-order kinetic model, P adsorption was dominated by chemisorption, follows by apatite precipitation. The P solubility (62.5 wt.%) in formic acid (2.0 wt.%) and the water-soluble P (3.2 wt.%) for ESPP-700 after P adsorption, indicated that the final product would work as fertilizer for acidic soils. This is an important step in the management of agricultural wastes to implement the 3R slogan “Reduce, Reuse, Recycle” towards a circular economy.

Idioma originalInglés
Número de artículo126106
PublicaciónBioresource Technology
Volumen343
DOI
EstadoPublicada - ene 2022

Tipos de productos de Colciencias

  • Artículo A1 - Q1

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