Cite this article as:

Komov D. N., Kazarinov I. А., Nikitina N. V. Sorbents Based on Natural Bentonites Modified with Iron (III) and Aluminum Polyhydroxocations by the Sol-Gel Method. Izvestiya of Saratov University. Chemistry. Biology. Ecology, 2015, vol. 15, iss. 2, pp. 27-34. DOI: https://doi.org/10.18500/1816-9775-2015-15-2-27-34

This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Heading: 
Chemistry
UDC: 
541.183
Language: 
Russian

Sorbents Based on Natural Bentonites Modified with Iron (III) and Aluminum Polyhydroxocations by the Sol-Gel Method

Authors: 
Komov Dmitry N., SSU. Institute of Chemistry., 410012, Saratov, Astrakhanskaya str., 83, building. 1, Institute of Chemistry, SSU, kazarinovia@mail.ru
Kazarinov Ivan А., Saratov State University , 83, Astrakhanskaya str., Saratov, 410012, Russia , kazarinovia@mail.ru
Nikitina Nadezhda V., Saratov State University , 83, Astrakhanskaya str., Saratov, 410012, Russia , kazarinovia@mail.ru
Abstract

Natural bentonite was modified with iron (III) and aluminum polyhy- droxocations by the sol–gel technique. This modification of natural bentonite has been found to cause changes in its chemical composi- tion, structural and sorption properties. The modified sorbents are fine-porous (nanostructured) objects with the predominance of 1.5–6.0 nm pore size. The specific surface area of our sorbents depends on the method of modification and the amount of the modifying component introduced (iron (III) or aluminum). The sorption capacity of the sorbents for permanganate anions was studied. The adsorption isotherms in this case are like Langmuir’s one by shape. The modification of bentonite with iron (III) and aluminum polyhydroxocations causes a significant increase in its sorption capacity for permanganate ions.

Key words: 
bentonite, nanosorbent, pore structure, surface area, permanganate ion sorption, polyhydroxocations
DOI: 
https://doi.org/10.18500/1816-9775-2015-15-2-27-34
References

1. Орлов Д. С., Садовникова Л. К., Лозановская И. Н. Экология и охрана биосферы при химическом загряз-нении : учеб. пособие для вузов. 2-е изд., перераб. и доп. М. : Высш. шк., 2002. 336 с. 

2. Смирнов А. Д. Сорбционная очистка воды. Л. : Химия, Ленингр. отд-ние, 1982. 169 с. 

3. Тарасевич Ю. И. Природные сорбенты в процессах очистки воды. Киев : Наук. думка, 1981. 207 с. 

4. Тарасевич Ю. И. Адсорбция на глинистых минералах. Киев : Наук. думка, 1975. 329 с. 

5. Narayanan С. Alumina pillared montmorillonite: characterization and catalysis of toluene benzylation and aniline ethylation // Appl. Catalysis A : Genegal. 2000. Vol. 193, № 1‒2. P. 17‒27. 

6. Brindley G. W., Sempels R. E. Preparation and properties of some hydroxyl-aluminum beidellites // Clays and Clay Minerals. 1977. Vol. 12, № 3. P. 229‒237. 

7. Комаров В. С. Влияние условий синтеза на физикохимические свойства сорбентов на основе монтмориллонита и основных солей железа // Коллоид. журн. 1995. Т. 57, № 1. С. 51‒54. 

8. Tichit D., Fajula F., Figuera F. Sintering of montmorillonites pillared by hydroxy-aluminum species // Clays and Clay Minerals. 1988. Vol. 36, № 4. P. 369‒375.

Full text (in Russian): 
himiya_2015_2_27-34.pdf