Co-impregnated Al-pillared clay as catalyst in fenton-like degradation of azo-dyes in the presence of oxone
Аутори
Marinović, SanjaMilutinović Nikolić, Aleksandra
Mojović, Zorica
Jović-Jovičić, Nataša
Ajduković, Marija
Mudrinić, Tihana
Banković, Predrag
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In past decades natural waterbodies have been severely struck by uncontrolled wastewater release. The most
harmful water pollutants include different organic compounds, such as synthetic dyes. Catalytic wet peroxide
oxidation has been widely investigated as a method for catalytic degradation of organic water pollutants. This is
a heterogeneous catalytic process based on the homogeneous Fenton reaction [1,2] that yields hydroxyl radicals
capable of disrupting chemical bonds in organic molecules. Sulphate radicals, generated by the conjunction of
cobalt with peroxymonosulfate (Oxone), are even more efficient oxidants than hydroxyl radicals. It is due to their
higher standard reduction potential comparing with that of hydroxyl radicals [3].
In this work, cobalt impregnated aluminium pillared clay was synthesized, characterized and tested as catalyst in
the catalytic wet peroxide oxidation of tartrazine dye in the presence of Oxone reagent. The synthesis consisted of
the pillaring... of Wyoming bentonite clay (Source Clay Repository of the Clay Minerals Society) with particle sizes
of up to 2 μm, followed by the deposition of cobalt oxide species using the incipient wetness impregnation method.
Phase compositions, textural and chemical properties of the obtained material were investigated using X-Ray
Powder Diffraction, Low Temperature Nitrogen Physisorption, Scanning Electron Microscopy along with Electron
Dispersive X-Ray Spectroscopy, as well as Diffuse Reflectance UV-Vis spectroscopy. The optimization of the
catalytic degradation of tartrazine dye using the obtained cobalt containing pillared clay was performed regarding
heterogeneous catalyst and Oxone concentrations, mixing regime etc. The reaction was monitored with respect to
time using UV-Vis spectroscopy. The obtained spectra implied complex mechanism of the reaction that included
the degradation of the dye, and the occurrence and subsequent removal of intermediates. Tartrazine degradation
using cobalt impregnated aluminium pillared clay and Oxone reagent appears to be efficient since the reaction
conditions under which almost complete removal of species detectable by UV-Vis spectroscopy were established.
Кључне речи:
Oxone / degradation of azo-dye / aluminum-pillared montmorilloniteИзвор:
Scientific research abstracts - XVI International Clay Conference, Granada, Spain, 17-21.07.2017, Granada, Spain, 2017, 7, 512-512Издавач:
- Sociedad Española de Arcillas - SEA
Финансирање / пројекти:
- Наноструктурни функционални и композитни материјали у каталитичким и сорпционим процесима (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45001)
Институција/група
IHTMTY - CONF AU - Marinović, Sanja AU - Milutinović Nikolić, Aleksandra AU - Mojović, Zorica AU - Jović-Jovičić, Nataša AU - Ajduković, Marija AU - Mudrinić, Tihana AU - Banković, Predrag PY - 2017 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/6352 AB - In past decades natural waterbodies have been severely struck by uncontrolled wastewater release. The most harmful water pollutants include different organic compounds, such as synthetic dyes. Catalytic wet peroxide oxidation has been widely investigated as a method for catalytic degradation of organic water pollutants. This is a heterogeneous catalytic process based on the homogeneous Fenton reaction [1,2] that yields hydroxyl radicals capable of disrupting chemical bonds in organic molecules. Sulphate radicals, generated by the conjunction of cobalt with peroxymonosulfate (Oxone), are even more efficient oxidants than hydroxyl radicals. It is due to their higher standard reduction potential comparing with that of hydroxyl radicals [3]. In this work, cobalt impregnated aluminium pillared clay was synthesized, characterized and tested as catalyst in the catalytic wet peroxide oxidation of tartrazine dye in the presence of Oxone reagent. The synthesis consisted of the pillaring of Wyoming bentonite clay (Source Clay Repository of the Clay Minerals Society) with particle sizes of up to 2 μm, followed by the deposition of cobalt oxide species using the incipient wetness impregnation method. Phase compositions, textural and chemical properties of the obtained material were investigated using X-Ray Powder Diffraction, Low Temperature Nitrogen Physisorption, Scanning Electron Microscopy along with Electron Dispersive X-Ray Spectroscopy, as well as Diffuse Reflectance UV-Vis spectroscopy. The optimization of the catalytic degradation of tartrazine dye using the obtained cobalt containing pillared clay was performed regarding heterogeneous catalyst and Oxone concentrations, mixing regime etc. The reaction was monitored with respect to time using UV-Vis spectroscopy. The obtained spectra implied complex mechanism of the reaction that included the degradation of the dye, and the occurrence and subsequent removal of intermediates. Tartrazine degradation using cobalt impregnated aluminium pillared clay and Oxone reagent appears to be efficient since the reaction conditions under which almost complete removal of species detectable by UV-Vis spectroscopy were established. PB - Sociedad Española de Arcillas - SEA C3 - Scientific research abstracts - XVI International Clay Conference, Granada, Spain, 17-21.07.2017, Granada, Spain T1 - Co-impregnated Al-pillared clay as catalyst in fenton-like degradation of azo-dyes in the presence of oxone VL - 7 SP - 512 EP - 512 UR - https://hdl.handle.net/21.15107/rcub_cer_6352 ER -
@conference{ author = "Marinović, Sanja and Milutinović Nikolić, Aleksandra and Mojović, Zorica and Jović-Jovičić, Nataša and Ajduković, Marija and Mudrinić, Tihana and Banković, Predrag", year = "2017", abstract = "In past decades natural waterbodies have been severely struck by uncontrolled wastewater release. The most harmful water pollutants include different organic compounds, such as synthetic dyes. Catalytic wet peroxide oxidation has been widely investigated as a method for catalytic degradation of organic water pollutants. This is a heterogeneous catalytic process based on the homogeneous Fenton reaction [1,2] that yields hydroxyl radicals capable of disrupting chemical bonds in organic molecules. Sulphate radicals, generated by the conjunction of cobalt with peroxymonosulfate (Oxone), are even more efficient oxidants than hydroxyl radicals. It is due to their higher standard reduction potential comparing with that of hydroxyl radicals [3]. In this work, cobalt impregnated aluminium pillared clay was synthesized, characterized and tested as catalyst in the catalytic wet peroxide oxidation of tartrazine dye in the presence of Oxone reagent. The synthesis consisted of the pillaring of Wyoming bentonite clay (Source Clay Repository of the Clay Minerals Society) with particle sizes of up to 2 μm, followed by the deposition of cobalt oxide species using the incipient wetness impregnation method. Phase compositions, textural and chemical properties of the obtained material were investigated using X-Ray Powder Diffraction, Low Temperature Nitrogen Physisorption, Scanning Electron Microscopy along with Electron Dispersive X-Ray Spectroscopy, as well as Diffuse Reflectance UV-Vis spectroscopy. The optimization of the catalytic degradation of tartrazine dye using the obtained cobalt containing pillared clay was performed regarding heterogeneous catalyst and Oxone concentrations, mixing regime etc. The reaction was monitored with respect to time using UV-Vis spectroscopy. The obtained spectra implied complex mechanism of the reaction that included the degradation of the dye, and the occurrence and subsequent removal of intermediates. Tartrazine degradation using cobalt impregnated aluminium pillared clay and Oxone reagent appears to be efficient since the reaction conditions under which almost complete removal of species detectable by UV-Vis spectroscopy were established.", publisher = "Sociedad Española de Arcillas - SEA", journal = "Scientific research abstracts - XVI International Clay Conference, Granada, Spain, 17-21.07.2017, Granada, Spain", title = "Co-impregnated Al-pillared clay as catalyst in fenton-like degradation of azo-dyes in the presence of oxone", volume = "7", pages = "512-512", url = "https://hdl.handle.net/21.15107/rcub_cer_6352" }
Marinović, S., Milutinović Nikolić, A., Mojović, Z., Jović-Jovičić, N., Ajduković, M., Mudrinić, T.,& Banković, P.. (2017). Co-impregnated Al-pillared clay as catalyst in fenton-like degradation of azo-dyes in the presence of oxone. in Scientific research abstracts - XVI International Clay Conference, Granada, Spain, 17-21.07.2017, Granada, Spain Sociedad Española de Arcillas - SEA., 7, 512-512. https://hdl.handle.net/21.15107/rcub_cer_6352
Marinović S, Milutinović Nikolić A, Mojović Z, Jović-Jovičić N, Ajduković M, Mudrinić T, Banković P. Co-impregnated Al-pillared clay as catalyst in fenton-like degradation of azo-dyes in the presence of oxone. in Scientific research abstracts - XVI International Clay Conference, Granada, Spain, 17-21.07.2017, Granada, Spain. 2017;7:512-512. https://hdl.handle.net/21.15107/rcub_cer_6352 .
Marinović, Sanja, Milutinović Nikolić, Aleksandra, Mojović, Zorica, Jović-Jovičić, Nataša, Ajduković, Marija, Mudrinić, Tihana, Banković, Predrag, "Co-impregnated Al-pillared clay as catalyst in fenton-like degradation of azo-dyes in the presence of oxone" in Scientific research abstracts - XVI International Clay Conference, Granada, Spain, 17-21.07.2017, Granada, Spain, 7 (2017):512-512, https://hdl.handle.net/21.15107/rcub_cer_6352 .