The structural and acid stability of three zeolitic tuffs from Zlatokop Beočin and Novakovići deposits were investigated. The HCl solution of various strengths from 10^-3 to 2M was used. The calculation of Si/Al ratio of starting materials showed that zeolitic tuffs from Zlatokop and Novakovići deposits are rich in clinoptilolite, while zeolitic tuff from Beočin deposit is rich in hettlandite. The acid treatment of all three zeotitic tuffs showed that decationisation was accompanied with dealumination, and both processes were increased with increasing the acid concentration. However, at lower acid concentrations (10^-3-l0^-1 M) primarily, ion exchange of inorganic cations in tuffs was occurred. The content of Al released from zeolitic tuffs during the acid treatment suggested that at HCl concentrations above 10^-1 M dealumination was occurred. From XRPD data, HCl effected a significant reduction in cristallinity of zeolitic tuffs with concentration of IM and above. The acid resistance ...of zeolitic tuffs from different deposits decreased in the following order: Zlatokop > Novakovići > Beočin.
Journal of Mining and Metallurgy A: Mining, 2002, 38, 1-4, 87-96
Publisher:
Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd
Funding / projects:
Projekat Ministarstva nauke Republike Srbije: The physical - chemical and biochemical base for production and application of new materials for toxic substances found in food, water, soil and air
TY - JOUR
AU - Radosavljević-Mihajlović, Ana
AU - Daković, Aleksandra
AU - Tomašević-Čanović, Magdalena
PY - 2002
UR - https://ritnms.itnms.ac.rs/handle/123456789/36
AB - The structural and acid stability of three zeolitic tuffs from Zlatokop Beočin and Novakovići deposits were investigated. The HCl solution of various strengths from 10^-3 to 2M was used. The calculation of Si/Al ratio of starting materials showed that zeolitic tuffs from Zlatokop and Novakovići deposits are rich in clinoptilolite, while zeolitic tuff from Beočin deposit is rich in hettlandite. The acid treatment of all three zeotitic tuffs showed that decationisation was accompanied with dealumination, and both processes were increased with increasing the acid concentration. However, at lower acid concentrations (10^-3-l0^-1 M) primarily, ion exchange of inorganic cations in tuffs was occurred. The content of Al released from zeolitic tuffs during the acid treatment suggested that at HCl concentrations above 10^-1 M dealumination was occurred. From XRPD data, HCl effected a significant reduction in cristallinity of zeolitic tuffs with concentration of IM and above. The acid resistance of zeolitic tuffs from different deposits decreased in the following order: Zlatokop > Novakovići > Beočin.
PB - Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd
T2 - Journal of Mining and Metallurgy A: Mining
T1 - Acid treatment of zeolitic tuffs: Influence of acid concentration on structural and acid stability
EP - 96
IS - 1-4
SP - 87
VL - 38
UR - conv_327
ER -
@article{
author = "Radosavljević-Mihajlović, Ana and Daković, Aleksandra and Tomašević-Čanović, Magdalena",
year = "2002",
abstract = "The structural and acid stability of three zeolitic tuffs from Zlatokop Beočin and Novakovići deposits were investigated. The HCl solution of various strengths from 10^-3 to 2M was used. The calculation of Si/Al ratio of starting materials showed that zeolitic tuffs from Zlatokop and Novakovići deposits are rich in clinoptilolite, while zeolitic tuff from Beočin deposit is rich in hettlandite. The acid treatment of all three zeotitic tuffs showed that decationisation was accompanied with dealumination, and both processes were increased with increasing the acid concentration. However, at lower acid concentrations (10^-3-l0^-1 M) primarily, ion exchange of inorganic cations in tuffs was occurred. The content of Al released from zeolitic tuffs during the acid treatment suggested that at HCl concentrations above 10^-1 M dealumination was occurred. From XRPD data, HCl effected a significant reduction in cristallinity of zeolitic tuffs with concentration of IM and above. The acid resistance of zeolitic tuffs from different deposits decreased in the following order: Zlatokop > Novakovići > Beočin.",
publisher = "Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd",
journal = "Journal of Mining and Metallurgy A: Mining",
title = "Acid treatment of zeolitic tuffs: Influence of acid concentration on structural and acid stability",
pages = "96-87",
number = "1-4",
volume = "38",
url = "conv_327"
}
Radosavljević-Mihajlović, A., Daković, A.,& Tomašević-Čanović, M.. (2002). Acid treatment of zeolitic tuffs: Influence of acid concentration on structural and acid stability. in Journal of Mining and Metallurgy A: Mining
Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd., 38(1-4), 87-96.
conv_327
Radosavljević-Mihajlović A, Daković A, Tomašević-Čanović M. Acid treatment of zeolitic tuffs: Influence of acid concentration on structural and acid stability. in Journal of Mining and Metallurgy A: Mining. 2002;38(1-4):87-96.
conv_327 .
Radosavljević-Mihajlović, Ana, Daković, Aleksandra, Tomašević-Čanović, Magdalena, "Acid treatment of zeolitic tuffs: Influence of acid concentration on structural and acid stability" in Journal of Mining and Metallurgy A: Mining, 38, no. 1-4 (2002):87-96,
conv_327 .
