Modification of natural clinoptilolite for nitrate removal from aqueous media
Апстракт
Natural zeolitic tuff from the Zlatokop mine (Vranjska Banja deposit, Serbia) was investigated as the starting material to obtain a low cost adsorbent for the removal of nitrate from aqueous media. The tuff rich in zeolite, clinoptilolite, was modified with several oxides, iron(III), manganese(IV) and magnesium, by simple procedures in order to make the clinoptilolite surface accessible for binding nitrate ions. The obtained oxide-modified zeolite samples were characterized by scanning electron microscopy and energy dispersive X-ray analysis (SEM/EDS), powder X-ray diffraction (PXRD), infrared spectroscopy (FTIR) and by measurement of their specific surface area. The effects of the adsorbent dosage (0.5, 1.0, 1.5 and 2.0 g), temperature (25, 35 and 45 degrees C) and initial nitrate concentration (c(0), 100, 200 and 300 mg dm(-3)) on the binding efficiency were also studied. For all adsorbents, the efficiency increased with temperature. The type of the oxide affected the adsorption mech...anism. The Fe(III) oxide-modified zeolite exhibited the best binding ability. For this adsorbent, the adsorption kinetics were studied and it was found that they were best represented by the pseudo-second-order model.
Кључне речи:
natural zeolite / clinoptilolite / oxide-modified zeolite / nitrate / adsorptionИзвор:
Journal of the Serbian Chemical Society, 2014, 79, 10, 1309-1322Издавач:
- Srpsko hemijsko društvo, Beograd
Финансирање / пројекти:
- Порозни материјали на бази оксида у заштити животне средине од генотоксичних супстанци (RS-MESTD-Basic Research (BR or ON)-172018)
DOI: 10.2298/JSC140116038P
ISSN: 0352-5139
WoS: 000344444800010
Scopus: 2-s2.0-84920715642
Колекције
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Pavlović, Jelena AU - Milenković, Jelena AU - Rajić, Nevenka PY - 2014 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2749 AB - Natural zeolitic tuff from the Zlatokop mine (Vranjska Banja deposit, Serbia) was investigated as the starting material to obtain a low cost adsorbent for the removal of nitrate from aqueous media. The tuff rich in zeolite, clinoptilolite, was modified with several oxides, iron(III), manganese(IV) and magnesium, by simple procedures in order to make the clinoptilolite surface accessible for binding nitrate ions. The obtained oxide-modified zeolite samples were characterized by scanning electron microscopy and energy dispersive X-ray analysis (SEM/EDS), powder X-ray diffraction (PXRD), infrared spectroscopy (FTIR) and by measurement of their specific surface area. The effects of the adsorbent dosage (0.5, 1.0, 1.5 and 2.0 g), temperature (25, 35 and 45 degrees C) and initial nitrate concentration (c(0), 100, 200 and 300 mg dm(-3)) on the binding efficiency were also studied. For all adsorbents, the efficiency increased with temperature. The type of the oxide affected the adsorption mechanism. The Fe(III) oxide-modified zeolite exhibited the best binding ability. For this adsorbent, the adsorption kinetics were studied and it was found that they were best represented by the pseudo-second-order model. PB - Srpsko hemijsko društvo, Beograd T2 - Journal of the Serbian Chemical Society T1 - Modification of natural clinoptilolite for nitrate removal from aqueous media EP - 1322 IS - 10 SP - 1309 VL - 79 DO - 10.2298/JSC140116038P ER -
@article{ author = "Pavlović, Jelena and Milenković, Jelena and Rajić, Nevenka", year = "2014", abstract = "Natural zeolitic tuff from the Zlatokop mine (Vranjska Banja deposit, Serbia) was investigated as the starting material to obtain a low cost adsorbent for the removal of nitrate from aqueous media. The tuff rich in zeolite, clinoptilolite, was modified with several oxides, iron(III), manganese(IV) and magnesium, by simple procedures in order to make the clinoptilolite surface accessible for binding nitrate ions. The obtained oxide-modified zeolite samples were characterized by scanning electron microscopy and energy dispersive X-ray analysis (SEM/EDS), powder X-ray diffraction (PXRD), infrared spectroscopy (FTIR) and by measurement of their specific surface area. The effects of the adsorbent dosage (0.5, 1.0, 1.5 and 2.0 g), temperature (25, 35 and 45 degrees C) and initial nitrate concentration (c(0), 100, 200 and 300 mg dm(-3)) on the binding efficiency were also studied. For all adsorbents, the efficiency increased with temperature. The type of the oxide affected the adsorption mechanism. The Fe(III) oxide-modified zeolite exhibited the best binding ability. For this adsorbent, the adsorption kinetics were studied and it was found that they were best represented by the pseudo-second-order model.", publisher = "Srpsko hemijsko društvo, Beograd", journal = "Journal of the Serbian Chemical Society", title = "Modification of natural clinoptilolite for nitrate removal from aqueous media", pages = "1322-1309", number = "10", volume = "79", doi = "10.2298/JSC140116038P" }
Pavlović, J., Milenković, J.,& Rajić, N.. (2014). Modification of natural clinoptilolite for nitrate removal from aqueous media. in Journal of the Serbian Chemical Society Srpsko hemijsko društvo, Beograd., 79(10), 1309-1322. https://doi.org/10.2298/JSC140116038P
Pavlović J, Milenković J, Rajić N. Modification of natural clinoptilolite for nitrate removal from aqueous media. in Journal of the Serbian Chemical Society. 2014;79(10):1309-1322. doi:10.2298/JSC140116038P .
Pavlović, Jelena, Milenković, Jelena, Rajić, Nevenka, "Modification of natural clinoptilolite for nitrate removal from aqueous media" in Journal of the Serbian Chemical Society, 79, no. 10 (2014):1309-1322, https://doi.org/10.2298/JSC140116038P . .