Purification of commercial grade bentonite from LamDong, Vietnam for nano-size  montmorillonite

Nguyen Quoc Trung; Nguyen Hong Nhung; Nguyen Phuong Thao; Nguyen Van Chien

doi:10.51316/jca.2021.151

Authors

Nguyen Quoc Trung Institute of Materials Science, Vietnam Academy of Science and Technology (VAST), Hanoi, VIETNAM Author
Nguyen Hong Nhung Institute of Materials Science, Vietnam Academy of Science and Technology, Hanoi, VIETNAM Author
Nguyen Phuong Thao Institue of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), Hanoi, VIETNAM Author
Nguyen Van Chien Institute for Tropical Technology, Vietnam Academy of Science and Technology, Hanoi, VIETNAM Author

DOI:

https://doi.org/10.51316/jca.2021.151

Keywords:

Nano montmorillonite, bentonite purification, (NaPO3)6

Abstract

The article will report the purification of Dilinh bentonite sample deposits of Lamdong province in Vietnam. The combination of sonication, sedimentation and dispersant (NaPO₃)₆ were applied to increase the montmorillonite (MMT) content. To evaluate the effect of (NaPO₃)₆ concentration, X-ray diffraction, Infra-red spectra, X-ray fluorescence spectra, dynamic light scatteringand scanning electron microscopy analyses were carried out. The results showed that, when (NaPO₃)₆content increased, the fraction of MMT increased and that of quartz decreased. The optimum (NaPO₃)₆content was 5 wt%,to eliminate maximum of quartz and other non clay minerals, the recovery yield was 71.2%.This was a high quality MMT selection process; the purified MMT is suitable for application as nanofiller in high performance polymer nanocomposites.

Downloads

Download data is not yet available.

References

M. Önal, Physicochemical properties of bentonites: an overview, Commun. Fac. Sci. Univ. Ank. Series B 52 (2006) 7-21. https://doi.org/10.1501/COMMUB_0000000349

T.S.N. Phan, N.T.V. Truong, V.T. Truong, Modified Binh Thuan bentonite as an efficient and recyclable catalyst fro the suzuki reaction between iodobenzene and phenylboronic acid, Vietnam J. Chem. 46 (2008) 509-514.

H.C. Nguyen, Report of Project: Research to evaluate the possibility of using value enhancement and development of bentonite processing technology in Lam Dong as feed additive for poultry, Ha Noi, 2015, p. 68.

T.P. Dang, Chemical and physical structure study and some applications of bentonite Thuan Hai Vietnam, Doctor thesis, Hanoi, 1994, p. 92.

T.H.T. Pham, X.T. Nghiem, Bentonite: natural resourses, processing technology and application in Vietnam, J. of Sci. and tech Univ of . ThaiNguyen 65 (2010) 159-164.

S.J. Chipera, D.L. Bish, Baseline studies of the clay minerals society source clays:powder X-ray diffraction analyses, Clays and Clay Miner. 49 (2001) 398-409. https://doi.org/10.1346/CCMN.2001.0490507

Theophanides Theophile (Ed), Infrared Spectroscopy - Materials Science, Engineering and Technology, InTech, Brazil, 2012, p. 52.

H. Sedighi, M. Irannajad, M. Gharabaghi, Silica Impurities Removal on Bentonite Sample for Nanoclay Production, Amirkabir J. of Civil Eng. 45 (2013) 35-42.

V.C. Farmer, J.D. Russell, The infra-red spectra of layer silicates. Spectrochim. Acta. 20 (1964) 1149-1173. https://doi.org/10.1016/0371-1951(64)80165-X

V.C. Farmer (Ed). The Infrared Spectra of Minerals, Cambridge University Press, London, 1974, p. 239.

J. Madejova, FTIR techniques in clay mineral studies, Vibrational Spectroscopy 31 (2003) 1-10. https://doi.org/10.1016/S0924-2031(02)00065-6

M.J. Wilson (Ed) Clay Mineralogy: Spectroscopic and Chemical Determinative Methods, Chapman & Hall, London, 1994, p. 60.

J.L. Bishop, C.M. Pieters, J.O. Edwards, Infrared Spectroscopic Analyses on the Nature of Water in Montmorillonite , Clays and Clay Mineral 42 (1994) 702-716. https://doi.org/10.1346/CCMN.1994.0420606