Results 161 to 170 of about 8,256 (210)
Electrokinetic Properties of Clinoptilolite With Mono- and Multivalent Electrolytes
Microporous and Mesoporous Materials, 2002 In this study, electrokinetic properties of clinoptilolite have been determined. A series of systematic zeta potential measurements have been performed to determine the isoelectric point (iep) and potential determining ions (pdi), and the effect of mono-
Bahri Ersoy, Mehmet S. Çelik
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Studies on natural clinoptilolites—II
Journal of Inorganic and Nuclear Chemistry, 1981Abstract The mobilities of Na + , K + , Rb + , Cs + , Ca 2+ , Sr 2+ and Ba 2+ ions in nearly homoionic forms of Hector clinoptilolite have been measured by radiochemical means. Self-diffusion coefficients at various temperatures were determined, enabling the calculation of energies, entropies and free energies of activation for cation migration in ...
A. Araya, A. Dyer
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Journal of Hazardous Materials, 2011
The increasing demands for environmental protection and sustainable food production require an increase in the use of natural and non-toxic materials for agriculture. In this study, the feasibility of using surfactant-modified zeolite (SMZ) in comparison with zeolite clinoptilolite (Cp) application to reduce nitrate leaching and enhance crop growth was
Raheleh, Malekian +2 more
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The increasing demands for environmental protection and sustainable food production require an increase in the use of natural and non-toxic materials for agriculture. In this study, the feasibility of using surfactant-modified zeolite (SMZ) in comparison with zeolite clinoptilolite (Cp) application to reduce nitrate leaching and enhance crop growth was
Raheleh, Malekian +2 more
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Water Research, 2006
Clinoptilolite, a natural zeolite, was used for the synthesis of a high surface area Clinoptilolite-Iron oxide system, in order to be used for the removal of Mn2+ ions from drinking water samples. The new system was obtained by adding natural clinoptilolite in an iron nitrate solution under strongly basic conditions.
Maria Doula
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Clinoptilolite, a natural zeolite, was used for the synthesis of a high surface area Clinoptilolite-Iron oxide system, in order to be used for the removal of Mn2+ ions from drinking water samples. The new system was obtained by adding natural clinoptilolite in an iron nitrate solution under strongly basic conditions.
Maria Doula
exaly +3 more sources
On the state of iron in a clinoptilolite
Hyperfine Interactions, 1995The characterization of an iron-containing natural zeolitic sample from the deposit of Tasajeras (Cuba) has been carried out by means of X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), X-ray photoelectron spectroscopy (XPS),57Fe Mössbauer spectroscopy and Fe K-edge X-ray absorption near-edge ...
Marco, J.F. +5 more
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Natural Clinoptilolite Nanoparticles Coated with Phosphatidylcholine
Doklady Biochemistry and Biophysics, 2022A nanocarrier was obtained by coating the natural clinoptilolite particle surface with a phosphatidylcholine layer. The shell effective size does not exceed the thickness of the phospholipid molecular layer, which was confirmed by UV spectrometry and molecular mass spectrometry.
A G, Pogorelov +5 more
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Antiviral properties of clinoptilolite
Microporous and Mesoporous Materials, 2005The aim of this study was to evaluate the antiviral properties of clinoptilolite, a natural non-toxic zeolite. Herein, a fine powder of micronized zeolite (MZ) was obtained by tribomechanical micronization of natural clinoptilolite. Different viral suspensions were treated with MZ in concentrations ranging from 0.5 to 50 mg/ml.
Grce, Magdalena, Pavelić, Krešimir
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Clinoptilolite, paragenesis and stratigraphy
Sedimentology, 1977ABSTRACTClinoptilolite, a zeolite of the heulandite group, occurs commonly in sediments as an authigenic mineral. In the Middle Eocene of southern Israel, it constitutes from a few per cent up to 80 per cent of the insoluble residue of the chalks and limestones. It is associated with opal C‐T, montmorillonite and palygorskite.
YAACOV NATHAN, AKIVA FLEXER
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Removal of copper and lead by clinoptilolite and clinoptilolite-iron system
2010The increasing levels of toxic metals (copper, zinc, cadmium, lead, nickel, chromium, etc.) that are discharged to the environment as industrial wastes, represent a serious threat to human health, living resources and ecological systems. Due to their tendency to accumulate in living organisms, causing various diseases and disorders, the treatment ...
Kragović, Milan +8 more
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