Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust
Authors
Velić, NatalijaStjepanović, Marija
Pavlović, Stefan
Bagherifam, Saeed
Banković, Predrag
Jović-Jovičić, Nataša
Article (Published version)
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Since the synthetic dye Congo red and nitrate are notorious contributors to water pollution
due to their persistent and potentially toxic nature, it is necessary to develop new efficient methods to
remove them from water bodies. Native lignocellulosic materials as biosorbents are mostly inferior,
i.e., the adsorption capacities of native materials are lower. Therefore, attempts have been made to
improve the adsorption capacities of such materials by physical and/or chemical methods, including
the production of biochar. In this study, adsorptive removal was investigated using a novel biosorbent
(mPWS) obtained by modifying poplar (waste) sawdust through quaternisation. The characterisation
of mPWS included SEM/EDX, FTIR, and MIP analysis. The adsorption of CR and nitrate onto mPWS
was studied in a batch system, as a function of contact time (1–240 min), biosorbent concentration
(1–8 g/dm3), and initial adsorbate concentration (25–200 mg/dm3). In all experiments, a high
removal... of both adsorbates, from 60 to over 90%, was achieved. Langmuir and Freundlich adsorption
isotherm models were used in order to describe equilibrium adsorption data, while pseudo-first-order
and pseudo-second-order kinetic models, and the intraparticle diffusion model, were used to describe
possible adsorption mechanisms. The Langmuir model fit the adsorption data of CR well, while the
nitrate adsorption process was better interpreted with the Freundlich isotherm model. The kinetics
data for both CR and nitrate agreed with the pseudo-second-order kinetics model, while analysis
using the intraparticle diffusion model indicated two rate-limiting steps during the adsorption
process. Based on the results, it can be concluded that the tested novel biosorbent can be effectively
used for the removal of CR and nitrate from water (with its adsorption capacities being 70.3 mg/g
and 43.6 mg/g, respectively).
Keywords:
adsorption / biosorbent; / lignocellulose / poplar sawdust / Congo red / nitrate / isotherm models / kinetic studiesSource:
Water, 2023, 15, 21, 3776-Publisher:
- MDPI
Funding / projects:
- Faculty of Food Technology Osijek, J. J. Strossmayer University of Osijek, Croatia.
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-MESTD-inst-2020-200026)
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Institution/Community
IHTMTY - JOUR AU - Velić, Natalija AU - Stjepanović, Marija AU - Pavlović, Stefan AU - Bagherifam, Saeed AU - Banković, Predrag AU - Jović-Jovičić, Nataša PY - 2023 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/6901 AB - Since the synthetic dye Congo red and nitrate are notorious contributors to water pollution due to their persistent and potentially toxic nature, it is necessary to develop new efficient methods to remove them from water bodies. Native lignocellulosic materials as biosorbents are mostly inferior, i.e., the adsorption capacities of native materials are lower. Therefore, attempts have been made to improve the adsorption capacities of such materials by physical and/or chemical methods, including the production of biochar. In this study, adsorptive removal was investigated using a novel biosorbent (mPWS) obtained by modifying poplar (waste) sawdust through quaternisation. The characterisation of mPWS included SEM/EDX, FTIR, and MIP analysis. The adsorption of CR and nitrate onto mPWS was studied in a batch system, as a function of contact time (1–240 min), biosorbent concentration (1–8 g/dm3), and initial adsorbate concentration (25–200 mg/dm3). In all experiments, a high removal of both adsorbates, from 60 to over 90%, was achieved. Langmuir and Freundlich adsorption isotherm models were used in order to describe equilibrium adsorption data, while pseudo-first-order and pseudo-second-order kinetic models, and the intraparticle diffusion model, were used to describe possible adsorption mechanisms. The Langmuir model fit the adsorption data of CR well, while the nitrate adsorption process was better interpreted with the Freundlich isotherm model. The kinetics data for both CR and nitrate agreed with the pseudo-second-order kinetics model, while analysis using the intraparticle diffusion model indicated two rate-limiting steps during the adsorption process. Based on the results, it can be concluded that the tested novel biosorbent can be effectively used for the removal of CR and nitrate from water (with its adsorption capacities being 70.3 mg/g and 43.6 mg/g, respectively). PB - MDPI T2 - Water T1 - Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust VL - 15 IS - 21 SP - 3776 DO - 10.3390/w15213776 ER -
@article{ author = "Velić, Natalija and Stjepanović, Marija and Pavlović, Stefan and Bagherifam, Saeed and Banković, Predrag and Jović-Jovičić, Nataša", year = "2023", abstract = "Since the synthetic dye Congo red and nitrate are notorious contributors to water pollution due to their persistent and potentially toxic nature, it is necessary to develop new efficient methods to remove them from water bodies. Native lignocellulosic materials as biosorbents are mostly inferior, i.e., the adsorption capacities of native materials are lower. Therefore, attempts have been made to improve the adsorption capacities of such materials by physical and/or chemical methods, including the production of biochar. In this study, adsorptive removal was investigated using a novel biosorbent (mPWS) obtained by modifying poplar (waste) sawdust through quaternisation. The characterisation of mPWS included SEM/EDX, FTIR, and MIP analysis. The adsorption of CR and nitrate onto mPWS was studied in a batch system, as a function of contact time (1–240 min), biosorbent concentration (1–8 g/dm3), and initial adsorbate concentration (25–200 mg/dm3). In all experiments, a high removal of both adsorbates, from 60 to over 90%, was achieved. Langmuir and Freundlich adsorption isotherm models were used in order to describe equilibrium adsorption data, while pseudo-first-order and pseudo-second-order kinetic models, and the intraparticle diffusion model, were used to describe possible adsorption mechanisms. The Langmuir model fit the adsorption data of CR well, while the nitrate adsorption process was better interpreted with the Freundlich isotherm model. The kinetics data for both CR and nitrate agreed with the pseudo-second-order kinetics model, while analysis using the intraparticle diffusion model indicated two rate-limiting steps during the adsorption process. Based on the results, it can be concluded that the tested novel biosorbent can be effectively used for the removal of CR and nitrate from water (with its adsorption capacities being 70.3 mg/g and 43.6 mg/g, respectively).", publisher = "MDPI", journal = "Water", title = "Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust", volume = "15", number = "21", pages = "3776", doi = "10.3390/w15213776" }
Velić, N., Stjepanović, M., Pavlović, S., Bagherifam, S., Banković, P.,& Jović-Jovičić, N.. (2023). Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust. in Water MDPI., 15(21), 3776. https://doi.org/10.3390/w15213776
Velić N, Stjepanović M, Pavlović S, Bagherifam S, Banković P, Jović-Jovičić N. Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust. in Water. 2023;15(21):3776. doi:10.3390/w15213776 .
Velić, Natalija, Stjepanović, Marija, Pavlović, Stefan, Bagherifam, Saeed, Banković, Predrag, Jović-Jovičić, Nataša, "Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust" in Water, 15, no. 21 (2023):3776, https://doi.org/10.3390/w15213776 . .