Oxidized and Ethylenediamine-Functionalized Multi-Walled Carbon Nanotubes for the Separation of Low Concentration Arsenate from Water
Само за регистроване кориснике
2013
Аутори
Veličković, ZlateMarinković, Aleksandar
Bajić, Zoran J.
Marković, Jelena M.
Perić-Grujić, Aleksandra
Uskoković, Petar
Ristić, Mirjana
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In this work multiwalled carbon nanotubes (MWCNTs) modified by oxidation (o-MWCNTs) and by aminofunctionalization (e-MWCNTs) were examined as potential adsorbents for arsenate removal from water. Adsorption characteristics of raw and modified MWCNTs were investigated in batch adsorption experiments. The influence of solution pH (pH range 3-10), contact time, and temperature (25, 35, and 45 degrees C) were studied. Ethylenediamine-functionalized MWCNTs have the greatest affinity for arsenate ions, followed by o-MWCNTs and raw-MWCNTs. The obtained experimental data for raw- and o-MWCNTs fitted Sips isotherm model, while for the e-MWCNTs, the Freundlich model provided the best fit to the experimental points. The maximum adsorption capacity for arsenate ions was achieved using e-MWCNTs, 12.18mgg(-1). The presence of the arsenate on the adsorbent is confirmed by FTIR spectroscopy. Thermodynamic studies indicated the spontaneity and endothermic nature of the adsorption. Sodium hydroxide solu...tion (0.1M) was found to desorb about 70% of arsenate from e-MWCNTs. The results with spiked drinking water samples demonstrated that e-MWCNTs, due to the present basic and acidic groups, were very efficient for the removal of arsenate ions, as well as of some cations, at pH 4.
Кључне речи:
adsorption / arsenate / equilibrium / kineticsИзвор:
Separation Science and Technology, 2013, 48, 13, 2047-2058Издавач:
- Taylor & Francis Inc, Philadelphia
Финансирање / пројекти:
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-45019)
- Развој и примена метода и материјала за мониторинг нових загађујућих и токсичних органских материја и тешких метала (RS-172007)
DOI: 10.1080/01496395.2013.790446
ISSN: 0149-6395
WoS: 000322867500016
Scopus: 2-s2.0-84881649784
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Veličković, Zlate AU - Marinković, Aleksandar AU - Bajić, Zoran J. AU - Marković, Jelena M. AU - Perić-Grujić, Aleksandra AU - Uskoković, Petar AU - Ristić, Mirjana PY - 2013 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2386 AB - In this work multiwalled carbon nanotubes (MWCNTs) modified by oxidation (o-MWCNTs) and by aminofunctionalization (e-MWCNTs) were examined as potential adsorbents for arsenate removal from water. Adsorption characteristics of raw and modified MWCNTs were investigated in batch adsorption experiments. The influence of solution pH (pH range 3-10), contact time, and temperature (25, 35, and 45 degrees C) were studied. Ethylenediamine-functionalized MWCNTs have the greatest affinity for arsenate ions, followed by o-MWCNTs and raw-MWCNTs. The obtained experimental data for raw- and o-MWCNTs fitted Sips isotherm model, while for the e-MWCNTs, the Freundlich model provided the best fit to the experimental points. The maximum adsorption capacity for arsenate ions was achieved using e-MWCNTs, 12.18mgg(-1). The presence of the arsenate on the adsorbent is confirmed by FTIR spectroscopy. Thermodynamic studies indicated the spontaneity and endothermic nature of the adsorption. Sodium hydroxide solution (0.1M) was found to desorb about 70% of arsenate from e-MWCNTs. The results with spiked drinking water samples demonstrated that e-MWCNTs, due to the present basic and acidic groups, were very efficient for the removal of arsenate ions, as well as of some cations, at pH 4. PB - Taylor & Francis Inc, Philadelphia T2 - Separation Science and Technology T1 - Oxidized and Ethylenediamine-Functionalized Multi-Walled Carbon Nanotubes for the Separation of Low Concentration Arsenate from Water EP - 2058 IS - 13 SP - 2047 VL - 48 DO - 10.1080/01496395.2013.790446 ER -
@article{ author = "Veličković, Zlate and Marinković, Aleksandar and Bajić, Zoran J. and Marković, Jelena M. and Perić-Grujić, Aleksandra and Uskoković, Petar and Ristić, Mirjana", year = "2013", abstract = "In this work multiwalled carbon nanotubes (MWCNTs) modified by oxidation (o-MWCNTs) and by aminofunctionalization (e-MWCNTs) were examined as potential adsorbents for arsenate removal from water. Adsorption characteristics of raw and modified MWCNTs were investigated in batch adsorption experiments. The influence of solution pH (pH range 3-10), contact time, and temperature (25, 35, and 45 degrees C) were studied. Ethylenediamine-functionalized MWCNTs have the greatest affinity for arsenate ions, followed by o-MWCNTs and raw-MWCNTs. The obtained experimental data for raw- and o-MWCNTs fitted Sips isotherm model, while for the e-MWCNTs, the Freundlich model provided the best fit to the experimental points. The maximum adsorption capacity for arsenate ions was achieved using e-MWCNTs, 12.18mgg(-1). The presence of the arsenate on the adsorbent is confirmed by FTIR spectroscopy. Thermodynamic studies indicated the spontaneity and endothermic nature of the adsorption. Sodium hydroxide solution (0.1M) was found to desorb about 70% of arsenate from e-MWCNTs. The results with spiked drinking water samples demonstrated that e-MWCNTs, due to the present basic and acidic groups, were very efficient for the removal of arsenate ions, as well as of some cations, at pH 4.", publisher = "Taylor & Francis Inc, Philadelphia", journal = "Separation Science and Technology", title = "Oxidized and Ethylenediamine-Functionalized Multi-Walled Carbon Nanotubes for the Separation of Low Concentration Arsenate from Water", pages = "2058-2047", number = "13", volume = "48", doi = "10.1080/01496395.2013.790446" }
Veličković, Z., Marinković, A., Bajić, Z. J., Marković, J. M., Perić-Grujić, A., Uskoković, P.,& Ristić, M.. (2013). Oxidized and Ethylenediamine-Functionalized Multi-Walled Carbon Nanotubes for the Separation of Low Concentration Arsenate from Water. in Separation Science and Technology Taylor & Francis Inc, Philadelphia., 48(13), 2047-2058. https://doi.org/10.1080/01496395.2013.790446
Veličković Z, Marinković A, Bajić ZJ, Marković JM, Perić-Grujić A, Uskoković P, Ristić M. Oxidized and Ethylenediamine-Functionalized Multi-Walled Carbon Nanotubes for the Separation of Low Concentration Arsenate from Water. in Separation Science and Technology. 2013;48(13):2047-2058. doi:10.1080/01496395.2013.790446 .
Veličković, Zlate, Marinković, Aleksandar, Bajić, Zoran J., Marković, Jelena M., Perić-Grujić, Aleksandra, Uskoković, Petar, Ristić, Mirjana, "Oxidized and Ethylenediamine-Functionalized Multi-Walled Carbon Nanotubes for the Separation of Low Concentration Arsenate from Water" in Separation Science and Technology, 48, no. 13 (2013):2047-2058, https://doi.org/10.1080/01496395.2013.790446 . .