TY - JOUR
T1 - Adsorption of anti-inflammatory drug diclofenac by MgAl/layered double hydroxide supported on Syagrus coronata biochar
AU - de Souza dos Santos, Grazielle Emanuelle
AU - Ide, Alessandra Honjo
AU - Duarte, José Leandro Silva
AU - McKay, Gordon
AU - Silva, Antonio Osimar Sousa
AU - Meili, Lucas
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/3/15
Y1 - 2020/3/15
N2 - The increasing levels of diclofenac sodium (DS) detection in aquatic environments have been causing great concern, thus the efficient removal of DS is of urgent importance. In this study, for the first time a composite with MgAl/layered double hydroxide supported on Syagrus coronata biochar was fabricated, characterized and used for diclofenac sodium adsorption. The physicochemical characterizations, including X-ray, FT-IR, N2 adsorption and microscopy, confirmed the composite was successfully synthesized. Adsorption batch experiments demonstrated a high DS removal efficiency (higher of 82% for 200 mg.L−1 of DS). Kinetic and equilibrium studies indicated the limiting adsorption mechanism was chemisorption providing maximum adsorption capacity of 138.83 and 168.04 mg.g−1 at 30 and 60° C, respectively. Thermodynamics suggested DS adsorption was spontaneous, exothermic and created modification in the adsorbent structure.
AB - The increasing levels of diclofenac sodium (DS) detection in aquatic environments have been causing great concern, thus the efficient removal of DS is of urgent importance. In this study, for the first time a composite with MgAl/layered double hydroxide supported on Syagrus coronata biochar was fabricated, characterized and used for diclofenac sodium adsorption. The physicochemical characterizations, including X-ray, FT-IR, N2 adsorption and microscopy, confirmed the composite was successfully synthesized. Adsorption batch experiments demonstrated a high DS removal efficiency (higher of 82% for 200 mg.L−1 of DS). Kinetic and equilibrium studies indicated the limiting adsorption mechanism was chemisorption providing maximum adsorption capacity of 138.83 and 168.04 mg.g−1 at 30 and 60° C, respectively. Thermodynamics suggested DS adsorption was spontaneous, exothermic and created modification in the adsorbent structure.
KW - Clays
KW - Emerging pollutants
KW - High capacity removal
KW - Pharmaceuticals
KW - Wastewater
UR - https://www.scopus.com/pages/publications/85079318018
U2 - 10.1016/j.powtec.2020.01.083
DO - 10.1016/j.powtec.2020.01.083
M3 - Article
AN - SCOPUS:85079318018
SN - 0032-5910
VL - 364
SP - 229
EP - 240
JO - Powder Technology
JF - Powder Technology
ER -