TY - JOUR
T1 - Tailor-made biochar-based nanocomposite for enhancing aqueous phase antibiotic removal
AU - Shaikh, Wasim Akram
AU - Chakraborty, Sukalyan
AU - Kumar, Abhishek
AU - Biswas, Jayanta Kumar
AU - Jha, Aditya Kr
AU - Bhattacharya, Tanushree
AU - Vithanage, Meththika
AU - Ansar, Sabah
AU - Hossain, Nazia
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/10
Y1 - 2023/10
N2 - In the present study, an innovative biochar-based metal(loid) oxide nano-matrix doped hybrid nanocomposite (nMOC) from kitchen waste-derived biochar (KWB) and ZnO/SiO2 was used for aqueous phase tetracycline removal. It involved a three-stage process, entailing thermal conversion of biomass to KWB, synthesis of ZnO/SiO2 nano-matrix, and nMOC fabrication via ball-milling. Advanced characterizations were employed to determine surface chemistry, surface morphology, surface area, and elemental composition, exhibited thermostable, mesoporous, heterogeneous, ZnO/SiO2-doped matrix with rich active surface-functional groups. The nMOC showed excellent performance (95.27 ± 0.304 %) for TC removal through batch mode adsorption study for 7.0 mg L−1 aqueous TC solution at ambient temperature. The sorption data were statistically evaluated through linear and non-linear isotherms, kinetics, and thermodynamics modelling incorporating error function analysis, suggested spontaneous, exothermic, and multilayer chemisorption with complex diffusional adsorption phenomenon. The adsorption mechanisms were governed by, electrostatic interaction, H-bonding, π-π stacking interactions, and pore-filling. Regeneration study demonstrated the maximum efficiency using EDTA (81.39 ± 1.234 %). Experiments on interference by co-existing ions suggested lesser impact by monovalent anions (NO3−) than divalent anions (SO42−), and monovalent cations (NH4+). The nMOC showed enhanced TC adsorption and excellent reusability along with dual benefits of minimization of solid kitchen waste and very effective antibiotic removal from (waste)water.
AB - In the present study, an innovative biochar-based metal(loid) oxide nano-matrix doped hybrid nanocomposite (nMOC) from kitchen waste-derived biochar (KWB) and ZnO/SiO2 was used for aqueous phase tetracycline removal. It involved a three-stage process, entailing thermal conversion of biomass to KWB, synthesis of ZnO/SiO2 nano-matrix, and nMOC fabrication via ball-milling. Advanced characterizations were employed to determine surface chemistry, surface morphology, surface area, and elemental composition, exhibited thermostable, mesoporous, heterogeneous, ZnO/SiO2-doped matrix with rich active surface-functional groups. The nMOC showed excellent performance (95.27 ± 0.304 %) for TC removal through batch mode adsorption study for 7.0 mg L−1 aqueous TC solution at ambient temperature. The sorption data were statistically evaluated through linear and non-linear isotherms, kinetics, and thermodynamics modelling incorporating error function analysis, suggested spontaneous, exothermic, and multilayer chemisorption with complex diffusional adsorption phenomenon. The adsorption mechanisms were governed by, electrostatic interaction, H-bonding, π-π stacking interactions, and pore-filling. Regeneration study demonstrated the maximum efficiency using EDTA (81.39 ± 1.234 %). Experiments on interference by co-existing ions suggested lesser impact by monovalent anions (NO3−) than divalent anions (SO42−), and monovalent cations (NH4+). The nMOC showed enhanced TC adsorption and excellent reusability along with dual benefits of minimization of solid kitchen waste and very effective antibiotic removal from (waste)water.
KW - Antibiotic
KW - Chemisorption
KW - Kitchen waste
KW - Nanocomposite
KW - Tetracycline
UR - http://www.scopus.com/inward/record.url?scp=85170080846&partnerID=8YFLogxK
U2 - 10.1016/j.jwpe.2023.104215
DO - 10.1016/j.jwpe.2023.104215
M3 - Article
AN - SCOPUS:85170080846
SN - 2214-7144
VL - 55
JO - Journal of Water Process Engineering
JF - Journal of Water Process Engineering
M1 - 104215
ER -