Sorption capacity of natural and modified montmorillonite in relation to copper ions in the presence of organic acids
Abstract
Natural montmorillonite (Sarigyukh deposit, Armenia) and its monosubstituted sodium form were
characterized by physical and chemical methods. The acid-base characteristics and X-ray pictures of the analyzed
samples are obtained. Sorption isotherms and kinetic characteristics are reported for sorption of copper
cations on natural and modified forms of montmorillonite in the presence of organic acids and without them.
It was found that sorption on cation-substituted sodium form of montmorillonite is higher than natural montmorillonite,
due to the increase in the capacity of cationic exchange. The presence of tartaric acid in the solution
leads to decrease of sorption of copper cations on all forms of montmorillonite, as in this case, the complex
compounds are present as copper tartarate in the solution. Alаnine insignificantly reduces the sorption of
copper cations on montmorillonite, due to a decrease pH of solution in sorption process and instability of
aminocomplexes of copper in acidic media.
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References
al., Catalysis Today, 2014, Vol. 223. pp. 105-
115.
2. Zhu R., Chen Q., Liu H. et. al., Applied
Clay Science, 2014, Vol. 88-89, pp. 33-38.
3. Pontes L.F.B.L., de Souza J.E.G., Galembeck
A. et al., Sensors and Actuators B: Chemical,
2013, Vol. 177, pp. 1115-1121.
4. Dong Y. P., Ding Y., Zhou Y. et al., Journal
of Electroanalytical Chemistry, 2014, Vol.
717-718 (15), pp. 206-212.
5. Dědková K., Matějová K., Lang J. et. al.,
Journal of Photochemistry and Photobiology B:
Biology, 2014, Vol. 135 (5), pp. 17-22.
6. Carretero M.I., Pozo M., Applied Clay
Science, 2010, Vol. 47, No 3-4, pp. 171-181.
7. Roselli S., Bellotti N., Deyá C. et. al.,
Journal of Rare Earths, 2014, Vol. 32 (4), pp.
352-359.
8. Junkes J.A., Prates P.B., Hotza D. et. al.,
Applied Clay Science, 2012, Vol. 69, pp. 50-57.
9. Kudryavsev P.G., Figovskiy O.L., Injenerny
vestnik Dona, 2014, No 2. pp. 1-30 URL:
ivdon.ru/ru/magazine/archive/n2y2014/2476.
10. Campos B., Aguilar-Carrillo J., Algarra M.
et. al., Applied Clay Science, 2013, Vol. 85, pp.
53-63.
11. Dohrmann R., Kaufhold S., Lundqvist B.,
Developments in Clay Science, 2013, Vol. 5, pp.
677-710.
12. Perelomov L., Sarkarb B, Rahman
М.,Goryacheva A. et al., Applied Clay Science,
2015. Vol. 119. pp. 417-423
http://dx.doi.org/10.1016/j.clay.2015.11.004
13. GOST 264323-85, Pochvy. Metody opredeleniya
udel'noj ehlektricheskoj provodimosti,
pH i plotnogo ostatka vodnoj vytyazhki, M.:
Izd-vo standartov, 1985. 4 p.
14. GOST 26423-85, Pochvy. Prigotovlenie
solevoj vytyazhki i opredelenie pH po metodu
CINAO, M.: Izd-vo standartov, 1985, 6 p.
15. Dmitrieva Е, Siundiukova K., Goryacheva
A., Perelomov L. et al., Izvestiya TulGU. Estestvennye
nauki, 2015, Vol. 4, pp. 205-219.
16. Sokolova T.A., Trofimov S.YA.,
Sorbcionnye svojstva pochv. Adsorbciya. Kationnyj
obmen: uchebnoe posobie po nekotorym
glavam himii pochv., Tula: Grif i K, 2009, 172p.
