Ion exchange of Cs+ and Sr2+ by natural clinoptilolite from bi-cationic solutions and XRD control of their structural positioning

Lihareva, N.; Petrov, O.; Dimowa, L.; Tzvetanova, Y.; Piroeva, Iskra; Ublekov, Filip; Nikolov, A.

doi:10.1007/s10967-020-07018-7

Cited by 19 publications

(5 citation statements)

References 35 publications

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“…This, in turn, requires monitoring of the natural radioactivity of synthetic zeolites during their synthesis [119]. The aforementioned properties of clinoptilolite support its superiority in the application of radionuclide sorption processes, as confirmed in their studies by Osmanlioglu [116] or Lihareva et al [117].…”

Section: Kind Of Application Zeolite Type Referencementioning

confidence: 89%

“…Lihareva et al [ 117 ] also demonstrated the usefulness of clinoptilolite for the removal of Cs + and Sr + from aqueous solutions, reporting a maximum adsorption capacity of 122.7 and 21.50 mg g −1 , respectively. Borai et al [ 118 ] evaluated four different zeolite minerals (natural clinoptilolite, chabazite, mordenite, and synthetic mordenite) for their utility in removing certain radionuclides from low-level radioactive liquid waste (LLRLW).…”

Section: Applications Of Zeolitesmentioning

confidence: 99%

“…It is also characterized by a high ion exchange capacity and a particular affinity for heavy metal cations. It can adsorb elements such as 137 Cs, 90 Sr, and other radioactive isotopes from solution and hold them in its three-dimensional crystal structure [117]. The low cost of clinoptilolite makes its use in the treatment of radioactive waste very attractive [116].…”

Section: Kind Of Application Zeolite Type Referencementioning

confidence: 99%

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Zeolite Properties, Methods of Synthesis, and Selected Applications

Kordala,

Wyszkowski

2024

Molecules

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Zeolites, a group of minerals with unique properties, have been known for more than 250 years. However, it was the development of methods for hydrothermal synthesis of zeolites and their large-scale industrial applications (oil processing, agriculture, production of detergents and building materials, water treatment processes, etc.) that made them one of the most important materials of the 20th century, with great practical and research significance. The orderly, homogeneous crystalline and porous structure of zeolites, their susceptibility to various modifications, and their useful physicochemical properties contribute to the continuous expansion of their practical applications in both large-volume processes (ion exchange, adsorption, separation of mixture components, catalysis) and specialized ones (sensors). The following review of the knowledge available in the literature on zeolites aims to present the most important information on the properties, synthesis methods, and selected applications of this group of aluminosilicates. Special attention is given to the use of zeolites in agriculture and environmental protection.

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Section: Kind Of Application Zeolite Type Referencementioning

confidence: 89%

Section: Applications Of Zeolitesmentioning

confidence: 99%

Section: Kind Of Application Zeolite Type Referencementioning

confidence: 99%

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Zeolite Properties, Methods of Synthesis, and Selected Applications

Kordala,

Wyszkowski

2024

Molecules

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“…Petrov and co-workers studied the ion exchangeability of a single solution of CsCl or SrCl 2 •2H 2 O with Bulgarian zeolitized tuffs and indicated the high selectivity over a wide range of concentrations of Cs + and Sr 2+ [7]. They also examined the kinetics of the ion exchangeability of both Cs + and Sr 2+ in the same solution and found that the equilibrium ion-exchange data (qmax (mg/g)) were 122.7 and 21.50 for Cs + and Sr 2+ , respectively [8]. However, they did not mention what inorganic ions in Bulgarian zeolitized tuffs did exchange ions with Cs + and Sr 2+ in solution.…”

Section: Introductionmentioning

confidence: 99%

Paper Sludge Carbon as an Adsorbent for Fukushima Radiocontaminated Paddy Soil

Tran

Yanaga

2020

Applied Sciences

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Radiocontaminated soil in a paddy field in the Iitate village in Fukushima was treated with an industrial paper sludge carbon (PSC) prior to growing rice in May 2011. The results showed that the sum of the activity concentrations of 134Cs and 137Cs in the polished rice harvested in October 2011 was 30 Bq·kg−1, a level much lower than the Japanese governmental safeguard value of 100 Bq·kg−1. Upon contacting with the contaminated soil, the contents of calcium, magnesium, copper, potassium, and barium in the PSC were decreased. Among the PSCs impregnated with various chlorides and sulfates of the previously mentioned minerals, potassium chloride, copper sulfate, magnesium sulfate, and potassium sulfate yielded higher decontamination degrees compared to the original PSC. The results imply that radioactive cesium in the soil exchanges cations with these minerals.

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“…2 O : SiO 2 : 0.52Al 2 O 3 : 67H 2 O (no. 15 in Table1), we varied the Na 2 O/SiO 2 ratio to 2.6, 2.4, 2.0, 1.9 and 1.7 (nos[19][20][21][22][23] and the XRD patterns of the corresponding products are provided in Fig.S2. † Fig.S2† shows that the impurity sodalite (SOD) is formed when the Na 2 O/SiO 2 ratio is reduced to 2.0, while the crystallinity of zeolite A is decreased if the Na 2 O/SiO 2 ratio is greater than 2.2 (2.4 and 2.6).…”

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confidence: 99%