—This paper presents a comparative evaluation of
two activated carbons produced from different lignocellulosic
residues (spent coffee grounds and Raphanus Sativus press cake),
as adsorbents for removal of phenol from aqueous solutions in
fixed-bed column studies. Both the prepared adsorbents
presented outstanding adsorption capacities when compared to
other low-cost adsorbents presented in the literature.
Breakthrough curves were produced and several breakthrough
models were evaluated for adequate description of the
adsorption process in the column, with the Dose-Response model
presenting the best fit to the experimental data.
—Adsorption, agricultural residues, fixed bed,
Marcus V. Faustino is with Colégio Militar de Belo Horizonte, Brazil
Cibele C. O. Alves, Adriana S. Franca and Leandro S. Oliveira are with
DEMEC, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627,
Belo Horizonte, MG, 31270-901, Brazil (e-mail:
Cite: Cibele C. O. Alves, Marcus V. Faustino, Adriana S. Franca, and Leandro S. Oliveira, "Comparative Evaluation of Activated Carbons Prepared by
Thermo-Chemical Activation of Lignocellulosic Residues
in Fixed Bed Column Studies," International Journal of Engineering and Technology vol. 7, no. 6, pp. 465-469, 2015.