CHEMICAL MODIFICATION OF PINEAPPLE (Ananas comosus L. Merril) PEEL WASTE FOR USE AS AN ADSORBENT OF Fe (III)

• DOI: 10.22533/at.ed.3173322322099

• Palavras-chave: Lignocellulosic waste, iron adsorption, bioadsorbent, ion exchange.

• Keywords: Lignocellulosic waste, iron adsorption, bioadsorbent, ion exchange.

• Abstract:

  The removal of metals dissolved in wastewater using agroindustrial waste turns out to be an economical and environmentally friendly method. These wastes contain functional groups that can be chemically modified, increasing their capacity to accommodate contaminants within their structure. In this work, the effect of chemical modification of pineapple peel with NaOH/CaCl2 was studied for the adsorption of Fe(III) through an ion exchange reaction. The characterization was carried out by studying the surface of the materials and their elemental compositions by SEM-EDX scanning electron microscopy. The studies demonstrated the effectiveness of the adsorption process, since there was an exchange of Ca (II) ions for Fe (III) atoms, quantitatively. Therefore, pineapple waste could be incorporated into the value chain as low-cost, high-performance adsorbents for application in the treatment process of water contaminated by metals.