TY - JOUR
T1 - Multi-component adsorption study by using bone char: modelling and removal mechanisms
AU - Ferreira, Regiane C.
AU - Dias, Diogo
AU - Fonseca, Isabel
AU - Bernardo, Maria
AU - Willimann Pimenta, João Lourenço Castagnari
AU - Lapa, Nuno
AU - de Barros, Maria A. S. D.
N1 - This study was supported by the National Council for Scientificand Technological Development (CNPq) and the Coordinationfor the Improvement of Higher Level (CAPES) by the CAPES /Chemical Engineering Department / process 88881.135075 /2016-01.
FCT/MCTES (UID/QUI/50006/2019).
PY - 2022
Y1 - 2022
N2 - Highly efficient simultaneous removal of paracetamol and Cu2+ ions from aqueous solutions was accomplished by using bovine bone char (BC). The adsorption behaviour was determined by kinetic and equilibrium studies of both single and binary system solutions. BC is a predominantly mesoporous material with a surface area of 103 m2 g−1. The influence of the initial pH on Cu2+ removal was tested, suggesting that the optimal pH was 3.0. The removal of paracetamol from single and binary systems was 9.45 and 12.7%, respectively. On the other hand, the Cu2+ removal was 36.2% for a single system, suggesting a higher affinity for BC. Moreover, in the case of binary mixtures, the presence of paracetamol led to an enhanced affinity of Cu2+ due to a synergistic/cooperative mechanism, which led to a copper removal of 97.3%. The cooperative model was successfully adjusted to the equilibrium data of the binary systems. The modelling results indicated the formation of a first adsorption layer where paracetamol and copper are retained, and a second layer with a great affinity for copper ions after the formation of a Cu-paracetamol complex, leading to higher removal of Cu2+.
AB - Highly efficient simultaneous removal of paracetamol and Cu2+ ions from aqueous solutions was accomplished by using bovine bone char (BC). The adsorption behaviour was determined by kinetic and equilibrium studies of both single and binary system solutions. BC is a predominantly mesoporous material with a surface area of 103 m2 g−1. The influence of the initial pH on Cu2+ removal was tested, suggesting that the optimal pH was 3.0. The removal of paracetamol from single and binary systems was 9.45 and 12.7%, respectively. On the other hand, the Cu2+ removal was 36.2% for a single system, suggesting a higher affinity for BC. Moreover, in the case of binary mixtures, the presence of paracetamol led to an enhanced affinity of Cu2+ due to a synergistic/cooperative mechanism, which led to a copper removal of 97.3%. The cooperative model was successfully adjusted to the equilibrium data of the binary systems. The modelling results indicated the formation of a first adsorption layer where paracetamol and copper are retained, and a second layer with a great affinity for copper ions after the formation of a Cu-paracetamol complex, leading to higher removal of Cu2+.
KW - Bone char
KW - co-adsorption
KW - competitive adsorption
KW - heavy metal
KW - paracetamol
UR - http://www.scopus.com/inward/record.url?scp=85089505816&partnerID=8YFLogxK
U2 - 10.1080/09593330.2020.1805026
DO - 10.1080/09593330.2020.1805026
M3 - Article
C2 - 32744169
AN - SCOPUS:85089505816
SN - 0959-3330
VL - 43
JO - Environmental Technology (United Kingdom)
JF - Environmental Technology (United Kingdom)
IS - 6
ER -