TY - JOUR
T1 - A biodegradable magnetic nanocomposite as a superabsorbent for the simultaneous removal of selected fluoroquinolones from environmentalwater matrices
T2 - Isotherm, kinetics, thermodynamic studies and cost analysis
AU - Mashile, Geaneth Pertunia
AU - Dimpe, Kgokgobi Mogolodi
AU - Nomngongo, Philiswa Nosizo
N1 - Publisher Copyright:
© 2020 by the authors.
PY - 2020/5/1
Y1 - 2020/5/1
N2 - The application of a magnetic mesoporous carbon/β-cyclodextrin-chitosan (MMPC/Cyc-Chit) nanocomposite for the adsorptive removal of danofloxacin (DANO), enrofloxacin (ENRO) and levofloxacin (LEVO) from aqueous and environmental samples is reported in this study. The morphology and surface characteristics of the magnetic nanocomposite were investigated by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) adsorption-desorption and Fourier transform infrared spectroscopy (FTIR). The N2 adsorption-desorption results revealed that the prepared nanocomposite was mesoporous and the BET surface area was 1435m2 g-1. The equilibrium data for adsorption isotherms were analyzed using two and three isotherm parameters. Based on the correlation coefficients (R2), the Langmuir and Sips isotherm described the data better than others. The maximum monolayer adsorption capacities ofMMPC/Cyc-Chit nanocomposite for DANO, ENRO and LEVO were 130, 195 and 165 mg g-1, respectively. Adsorption thermodynamic studies performed proved that the adsorption process was endothermic and was dominated by chemisorption.
AB - The application of a magnetic mesoporous carbon/β-cyclodextrin-chitosan (MMPC/Cyc-Chit) nanocomposite for the adsorptive removal of danofloxacin (DANO), enrofloxacin (ENRO) and levofloxacin (LEVO) from aqueous and environmental samples is reported in this study. The morphology and surface characteristics of the magnetic nanocomposite were investigated by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) adsorption-desorption and Fourier transform infrared spectroscopy (FTIR). The N2 adsorption-desorption results revealed that the prepared nanocomposite was mesoporous and the BET surface area was 1435m2 g-1. The equilibrium data for adsorption isotherms were analyzed using two and three isotherm parameters. Based on the correlation coefficients (R2), the Langmuir and Sips isotherm described the data better than others. The maximum monolayer adsorption capacities ofMMPC/Cyc-Chit nanocomposite for DANO, ENRO and LEVO were 130, 195 and 165 mg g-1, respectively. Adsorption thermodynamic studies performed proved that the adsorption process was endothermic and was dominated by chemisorption.
KW - Cost analysis
KW - Desirability function
KW - Fluoroquinolones
KW - Mesoporous carbon
KW - Thermodynamics
KW - Ultrasound radiation
KW - Wastewater
UR - http://www.scopus.com/inward/record.url?scp=85085740000&partnerID=8YFLogxK
U2 - 10.3390/POLYM12051102
DO - 10.3390/POLYM12051102
M3 - Article
AN - SCOPUS:85085740000
SN - 2073-4360
VL - 12
JO - Polymers
JF - Polymers
IS - 5
M1 - 1102
ER -