Original scientific paper
https://doi.org/10.15255/CABEQ.2014.2115
Effect of Solution pH on the Removal of Paracetamol by Activated Carbon of Dende Coconut Mesocarp
R. C. Ferreira
; Chemical Engineering Department, State University of Maringá (UEM), 5790 Colombo Av., 87020–900, Maringá, Paraná, Brazil
O. M. Couto Junior
; Center of Technology and Exact Science, The University Center of Maringá (Unicesumar), 1610 Guedner Av. – 87050-390 Maringá, Paraná, Brazil
K. Q. Carvalho
; Academic Department of Civil Construction, Federal Technological University of Paraná (UTFPR), 4900 Deputado Heitor Alencar Furtado St., 81280–340, Curitiba, Paraná, Brazil
P. A. Arroyo
; Chemical Engineering Department, State University of Maringá (UEM), 5790 Colombo Av., 87020–900, Maringá, Paraná, Brazil
M. A. S. D. Barros
; Chemical Engineering Department, State University of Maringá (UEM), 5790 Colombo Av., 87020–900, Maringá, Paraná, Brazil
Abstract
Activated carbon of dende coconut mesocarp was used to investigate the removal of paracetamol from water by adsorption. The results indicated that the retention of paracetamol was favored in activated carbon with neutral surface properties. The textural features and presence of a transport pores network contributed to ensuring the accessibility to the inner porosity, and the microporosity must be large enough to accommodate the paracetamol molecule. Chemisorption and mainly physisorption are important in the
paracetamol removal. Pseudo-second order equation and Langmuir model were chosen to best present the experimental data. The adsorption process was non-spontaneous and endothermic with increase in system disorder.
Keywords
paracetamol; adsorption; activated carbon; dende coconut
Hrčak ID:
137554
URI
Publication date:
6.4.2015.
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