Removal of Brilliant Green Cationic Dye Using Bioadsorbent Material from Oyster Shells

Andrea Liliana Moreno-Ríos (), Carolanne Coronado-Herrera, Jean C. Rhenals-Navarro, Hugo Gaspar Hernandez-Palma, Guilherme Luiz Dotto, Claudete Gindri Ramos and Leandro Gómez-Plata
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Andrea Liliana Moreno-Ríos: Department of Civil and Environmental, Universidad de la Costa, Barranquilla 080002, Colombia
Carolanne Coronado-Herrera: Department of Civil and Environmental, Universidad de la Costa, Barranquilla 080002, Colombia
Jean C. Rhenals-Navarro: Department of Civil and Environmental, Universidad de la Costa, Barranquilla 080002, Colombia
Hugo Gaspar Hernandez-Palma: Industrial Engineering Program, Corporación Universitaria Iberoamericana, Bogotá 110231, Colombia
Guilherme Luiz Dotto: Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Santa Maria 97105-900, Brazil
Claudete Gindri Ramos: Department of Civil and Environmental, Universidad de la Costa, Barranquilla 080002, Colombia
Leandro Gómez-Plata: Centro para el Desarrollo Agroecológico y Agroindustrial—Regional Atlántico, Servicio Nacional de Aprendizaje (SENA), Barranquilla 085001, Colombia

Sustainability, 2023, vol. 15, issue 23, 1-20

Abstract: This study explored the potential of coral rock, specifically coquina derived from oyster shells, as a bioadsorbent for the removal of dyes from wastewater generated by the textile industry. The investigation included an examination of particle size fractions (300 µm and less than 300 µm) and thermal treatment; the investigation involved drying at 120 °C and calcination at temperatures ranging from 200 °C to 800 °C. The material was subjected to a comprehensive analysis through various characterization techniques. Laboratory-scale experiments were conducted to evaluate the removal capacity and adsorption kinetics of the bioadsorbent utilizing brilliant green dye. The experiments involved varying dye concentrations (25, 50, and 75 mg L −1 ), pH levels (2 to 12), and different doses of biosorbent material (0.2 to 0.6 g L −1 ), with constant agitation. Various kinetic models were applied to fit the experimental data, with the pseudo-second-order model demonstrating the best fit. The findings reveal that coquina rock, characterized by a temperature of 120 °C and a particle size of greater than 300 µm, exhibits remarkable effectiveness. It achieved a removal efficiency of 90% within 15 to 20 min at pH 7.8. This study concludes that coquina rock not only stands out as demonstrating remarkable efficacy in dye removal but also underscores a sustainable approach, leveraging readily available and environmentally friendly materials for wastewater treatment.

Keywords: bioadsorbent; dye; oyster shells; coquina rock; removal (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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