The multistage synthesis of the multi-wall carbon nanotubes (MWCNT) modified with polyamidoamine dendrimers, A1/and A2/MWCNT, capable of cation removal, is presented in this work, as well as novel adsorbents based on these precursor materials and modified with goethite nano-deposit, alpha-FeOOH, A1/ and A2/MWCNT-alpha-FeO(OH) adsorbents used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on adsorption efficiency were studied. Adsorption data modelling by the Langmuir isotherm, revealed good adsorption capacities (in mg g(-1)) of 18.8 for As(V) and 60.1 and 44.2 for Pb2+ and Cd2+ on A2/MWCNT, respectively. Also, 27.6 and 29.8 mg g(-1) of As(V) on A1/ and A2/MWCNT-alpha-FeO(OH), respectively, were removed. Thermodynamic parameters showed that the adsorption is spontaneous and endothermic processes. Results of the study of influences of competitive ions: bicarbonate, sulfate, phosphate, silicate, chromate, fluoride and natu...ral organic matter (NOM), i.e., humic acid (HA), showed the highest effect of phosphate on the decrease of arsenate adsorption. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model which predicted intra-particle diffusion as a rate-controlling step. Also, activation energy (E-a/kJ mol(-1)): 8.85 for Cd2+, 9.25 for Pb2+ and 7.98 for As(V), were obtained from kinetic data.
TY - JOUR
AU - Budimirović, Dragoslav
AU - Veličković, Zlate
AU - Bajić, Zoran
AU - Milošević, Dragana
AU - Nikolić, Jasmina
AU - Drmanić, Saša
AU - Marinković, Aleksandar
PY - 2017
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3679
AB - The multistage synthesis of the multi-wall carbon nanotubes (MWCNT) modified with polyamidoamine dendrimers, A1/and A2/MWCNT, capable of cation removal, is presented in this work, as well as novel adsorbents based on these precursor materials and modified with goethite nano-deposit, alpha-FeOOH, A1/ and A2/MWCNT-alpha-FeO(OH) adsorbents used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on adsorption efficiency were studied. Adsorption data modelling by the Langmuir isotherm, revealed good adsorption capacities (in mg g(-1)) of 18.8 for As(V) and 60.1 and 44.2 for Pb2+ and Cd2+ on A2/MWCNT, respectively. Also, 27.6 and 29.8 mg g(-1) of As(V) on A1/ and A2/MWCNT-alpha-FeO(OH), respectively, were removed. Thermodynamic parameters showed that the adsorption is spontaneous and endothermic processes. Results of the study of influences of competitive ions: bicarbonate, sulfate, phosphate, silicate, chromate, fluoride and natural organic matter (NOM), i.e., humic acid (HA), showed the highest effect of phosphate on the decrease of arsenate adsorption. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model which predicted intra-particle diffusion as a rate-controlling step. Also, activation energy (E-a/kJ mol(-1)): 8.85 for Cd2+, 9.25 for Pb2+ and 7.98 for As(V), were obtained from kinetic data.
PB - Srpsko hemijsko društvo, Beograd
T2 - Journal of the Serbian Chemical Society
T1 - Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes
EP - 1191
IS - 10
SP - 1175
VL - 82
DO - 10.2298/JSC170422066B
ER -
@article{
author = "Budimirović, Dragoslav and Veličković, Zlate and Bajić, Zoran and Milošević, Dragana and Nikolić, Jasmina and Drmanić, Saša and Marinković, Aleksandar",
year = "2017",
abstract = "The multistage synthesis of the multi-wall carbon nanotubes (MWCNT) modified with polyamidoamine dendrimers, A1/and A2/MWCNT, capable of cation removal, is presented in this work, as well as novel adsorbents based on these precursor materials and modified with goethite nano-deposit, alpha-FeOOH, A1/ and A2/MWCNT-alpha-FeO(OH) adsorbents used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on adsorption efficiency were studied. Adsorption data modelling by the Langmuir isotherm, revealed good adsorption capacities (in mg g(-1)) of 18.8 for As(V) and 60.1 and 44.2 for Pb2+ and Cd2+ on A2/MWCNT, respectively. Also, 27.6 and 29.8 mg g(-1) of As(V) on A1/ and A2/MWCNT-alpha-FeO(OH), respectively, were removed. Thermodynamic parameters showed that the adsorption is spontaneous and endothermic processes. Results of the study of influences of competitive ions: bicarbonate, sulfate, phosphate, silicate, chromate, fluoride and natural organic matter (NOM), i.e., humic acid (HA), showed the highest effect of phosphate on the decrease of arsenate adsorption. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber-Morris model which predicted intra-particle diffusion as a rate-controlling step. Also, activation energy (E-a/kJ mol(-1)): 8.85 for Cd2+, 9.25 for Pb2+ and 7.98 for As(V), were obtained from kinetic data.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes",
pages = "1191-1175",
number = "10",
volume = "82",
doi = "10.2298/JSC170422066B"
}
Budimirović, D., Veličković, Z., Bajić, Z., Milošević, D., Nikolić, J., Drmanić, S.,& Marinković, A.. (2017). Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 82(10), 1175-1191.
https://doi.org/10.2298/JSC170422066B
Budimirović D, Veličković Z, Bajić Z, Milošević D, Nikolić J, Drmanić S, Marinković A. Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes. in Journal of the Serbian Chemical Society. 2017;82(10):1175-1191.
doi:10.2298/JSC170422066B .
Budimirović, Dragoslav, Veličković, Zlate, Bajić, Zoran, Milošević, Dragana, Nikolić, Jasmina, Drmanić, Saša, Marinković, Aleksandar, "Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes" in Journal of the Serbian Chemical Society, 82, no. 10 (2017):1175-1191,
https://doi.org/10.2298/JSC170422066B . .
