Results 21 to 30 of about 2,160 (179)
Use of Clinoptilolite in Ethanol Dehydration [PDF]
Separation Science and Technology, 1996 Clinoptilolite-type natural zeolite, which exists in various regions of Turkey, has been experimentally studied. For the ethanol-water-local clinoptilolite system, uptake and breakthrough curves were determined under a nitrogen gas atmosphere. In adsorption kinetics and adsorption equilibrium studies, the effects of particle size, temperature and ...
Tihmillioglu, F, Ulku, S
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Improved modification of clinoptilolite with silver using ultrasonic radiation
Ultrasonics Sonochemistry, 2021 The modification of natural clinoptilolite with silver ions using ultrasound has been investigated in the current work. The modification process was performed using clinoptilolite of different fractions (0–3.0 mm) over the temperature range of 25–55 °C ...
Z. Znak +7 more
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Clinoptilolite-Based Adsorbents for Paracetamol Removal. [PDF]
MoleculesThis study investigates the adsorption of paracetamol from aqueous solutions using natural clinoptilolite and its modified forms. The raw zeolite (p-CLI) was converted into its protonic (H-CLI) and organo-modified (o-CLI) counterparts through ammonium exchange and calcination, and treatment with hexadecyltrimethylammonium bromide (HDTMA-Br ...
Wójcik S +3 more
europepmc +3 more sources
Adsorption of Sulfur Dioxide on Clinoptilolite/Nano Iron Oxide and Natural Clinoptilolite
Health Scope, 2019 Background: Sulfur dioxide gas is known to include pollutants that are harmful to human health and the environment. Therefore, due to the increase of industrial activities, SO2 gas pollution control is very important. Objectives: The purpose of this study was to investigate the efficiency of sulfur dioxide removal by iron oxide nanoparticles deposited ...
Mina Mahmoodi Meimand +2 more
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Use of a Natural Clinoptilolite Monolith as a Negative Temperature Coefficient Thermistor
Engineering Proceedings, 2023 Geomorphic clinoptilolite, a mechanically and thermally stable mineral substance, has very useful electrical properties due to the presence of extra-framework cations in the crystal structure. Indeed, owing to the electrical transport that alkaline earth
Loredana Schiavo, Gianfranco Carotenuto
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Removal of ammonia by clinoptilolite [PDF]
Global NEST Journal, 2013 The important advantage of zeolite applied to water treatment is its high porosity when comparing to other minerals. The porosity results in good hydrodynamic properties (the increase in the pressure loss on the zeolite filters is 1.5-2.0 times smaller than in the case of sand filters) and adsorption roperties, and in turn high capacity which allows
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The Canadian Journal of Chemical Engineering, EarlyView.Abstract This study examines the microwave‐assisted catalytic pyrolysis (MACP) of individual and blended textiles (cotton, polyester, nylon 6) using ZnO and a ZnO/natural zeolite catalyst. In a custom‐built microwave reactor operated at 500°C, 1 kW power, and a 15‐min residence time, textile wastes were pyrolyzed.
Peyman Alizadeh +3 more
wiley +1 more source
Hydrothermal transformation of clinoptilolite
Bulletin of Materials Science, 1985 Procedure for hydrothermal transformation of natural clinoptilolite at 160°C is described. The synthesis is carried out in the system Na2O-Al2O3-SiO2-H2O. Products of 24–168 hr runs are characterized by x-ray diffraction,ir spectroscopy, energy dispersive analysis of x-rays (edax), and electron microscopy.
M S Joshi, V V Joshi
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Adsorption of uranyl ion on acid-modified zeolitic mineral clinoptilolite [PDF]
Hemijska Industrija, 2009 In this paper, the results of adsorption of uranyl ion on acid-modified zeolitic mineral clinoptilolite are presented. Adsorption was investigated at different amounts of solid phase in suspension, as well as at different pH values.
Matijašević Srđan D. +3 more
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Automated particle analysis of D.B. Cooper's tie
Journal of Forensic Sciences, EarlyView.Abstract Automated particle analysis (APA) using scanning electron microscopy (SEM) and energy‐dispersive x‐ray spectrometry (EDS) is a well‐known method in forensics, especially as it is applied to gunshot residue analysis. Here we describe the analysis of particles lifted from D.B. Cooper's tie, which was left on the hijacked plane in 1971.
Thomas G. Kaye, Kent L. Rhodes
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