Preparation of carbonaceous materials from pyrolysis of chicken bones and its application for fuchsine adsorption

Letícia Nascimento Côrtes, Susanne Pedroso Druzian, Angélica Fátima Mantelli Streit, Tito Roberto Sant'anna Cadaval Junior, Gabriela Carvalho Collazzo, Guilherme Luiz Dotto
Environmental Science and Pollution Research International 2018 November 16
Activated carbon and biochar were obtained from chicken bone (CB), characterized, and applied to remove basic fuchsine from aqueous media. The adsorbent dosage and pH effects were studied, as well as kinetic, equilibrium, and thermodynamic curves were constructed. The values of BET surface area and total pore volume were 108.94 m2  g-1 and 0.219 cm3  g-1 for the activated carbon and, 18.72 m2  g-1 and 0.075 cm3  g-1 for the biochar. The dye removal percentages were 93.63 and 55.38% when 2.5 g L-1 of activated carbon and biochar were used, respectively. The adsorption was favored using 0.5 g L-1 of adsorbent and pH of 7.0. Adsorption kinetics was well represented by the pseudo-second-order model. Langmuir model was the best to represent the equilibrium. Maximum adsorption capacity was 260.8 mg g-1 , obtained using activated carbon. The process was endothermic, favorable, and spontaneous. Results showed that alternative carbonaceous materials can be obtained from chicken bones and used as adsorbents to treat colored effluents containing fuchsine.

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