TY  - JOUR
AU  - Koprivica, Marija
AU  - Simić, Marija
AU  - Petrović, Jelena
AU  - Ercegović, Marija
AU  - Dimitrijević, Jelena
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/844
AB  - In this study, hydrothermal carbonization (HTC) at five temperatures (180, 200, 220, 240,
and 260  C) was applied to transform Paulownia leaves (PL) into a carbonaceous sorbent of Pb(II)
from aqueous solutions. To enhance the adsorption efficiency of the obtained hydrochar (PH),
subsequent alkali activation was performed using NaOH. Preliminary results of the Pb(II) adsorption
(CPb = 200 mg/L) showed removal coefficients after 48 h of 73.44 mg/g, 82.37 mg/g, and 110.9 mg/g
for PL, PH-220, and MPH-220, respectively. The selected hydrochar (PH-220) and modified hydrochar
(MPH-220) were further investigated by scanning electron microscopy (SEM) and Fourier transform
infrared spectroscopy (FTIR). The results revealed that alkali treatment changed the hydrochar
structure and, thus, improved its adsorption performance. The kinetic parameters showed that
the Pb(II) sorption onto MPH-220 followed a pseudo-second-order model, while the intra-particle
diffusion went through two simultaneous stages. The Langmuir isotherm model best described the
experimental data and indicated the value of 174.75 mg Pb(II)/g as the maximum adsorption capacity.
The two possible mechanisms of Pb(II) binding were complexation and/or Pb-  electron interaction.
The obtained results indicate the great potential of MPH-220 for Pb(II) removal from aqueous media
and its potential utilization as an effective adsorbent for wastewater purification.
PB  - MDPI
T2  - Processes
T1  - Evaluation of Adsorption Efficiency on Pb(II) Ions Removal Using Alkali-Modified Hydrochar from Paulownia Leaves
IS  - 5
VL  - 11
DO  - 10.3390/pr11051327
ER  - 

@article{
author = "Koprivica, Marija and Simić, Marija and Petrović, Jelena and Ercegović, Marija and Dimitrijević, Jelena",
year = "2023",
abstract = "In this study, hydrothermal carbonization (HTC) at five temperatures (180, 200, 220, 240,
and 260  C) was applied to transform Paulownia leaves (PL) into a carbonaceous sorbent of Pb(II)
from aqueous solutions. To enhance the adsorption efficiency of the obtained hydrochar (PH),
subsequent alkali activation was performed using NaOH. Preliminary results of the Pb(II) adsorption
(CPb = 200 mg/L) showed removal coefficients after 48 h of 73.44 mg/g, 82.37 mg/g, and 110.9 mg/g
for PL, PH-220, and MPH-220, respectively. The selected hydrochar (PH-220) and modified hydrochar
(MPH-220) were further investigated by scanning electron microscopy (SEM) and Fourier transform
infrared spectroscopy (FTIR). The results revealed that alkali treatment changed the hydrochar
structure and, thus, improved its adsorption performance. The kinetic parameters showed that
the Pb(II) sorption onto MPH-220 followed a pseudo-second-order model, while the intra-particle
diffusion went through two simultaneous stages. The Langmuir isotherm model best described the
experimental data and indicated the value of 174.75 mg Pb(II)/g as the maximum adsorption capacity.
The two possible mechanisms of Pb(II) binding were complexation and/or Pb-  electron interaction.
The obtained results indicate the great potential of MPH-220 for Pb(II) removal from aqueous media
and its potential utilization as an effective adsorbent for wastewater purification.",
publisher = "MDPI",
journal = "Processes",
title = "Evaluation of Adsorption Efficiency on Pb(II) Ions Removal Using Alkali-Modified Hydrochar from Paulownia Leaves",
number = "5",
volume = "11",
doi = "10.3390/pr11051327"
}

Koprivica, M., Simić, M., Petrović, J., Ercegović, M.,& Dimitrijević, J.. (2023). Evaluation of Adsorption Efficiency on Pb(II) Ions Removal Using Alkali-Modified Hydrochar from Paulownia Leaves. in Processes
MDPI., 11(5).
https://doi.org/10.3390/pr11051327

Koprivica M, Simić M, Petrović J, Ercegović M, Dimitrijević J. Evaluation of Adsorption Efficiency on Pb(II) Ions Removal Using Alkali-Modified Hydrochar from Paulownia Leaves. in Processes. 2023;11(5).
doi:10.3390/pr11051327 .

Koprivica, Marija, Simić, Marija, Petrović, Jelena, Ercegović, Marija, Dimitrijević, Jelena, "Evaluation of Adsorption Efficiency on Pb(II) Ions Removal Using Alkali-Modified Hydrochar from Paulownia Leaves" in Processes, 11, no. 5 (2023),
https://doi.org/10.3390/pr11051327 . .