Results 21 to 30 of about 5,396 (208)

H2 separation using pressed clinoptilolite and mixed copper‐clinoptilolite disc membranes

open access: yesThe Canadian Journal of Chemical Engineering, 2016
AbstractDisc membranes machined from high‐purity natural clinoptilolite rocks demonstrated promising hydrogen separation efficiency. However, these membranes cannot be adequately scaled up. To overcome this and provide process flexibility, mixed matrix membranes are required, pairing small particles of natural zeolite with a binder system.
Farjoo, Afrooz   +2 more
openaire   +2 more sources

Cr(VI) sorption by using clinoptilolite and bacteria loaded clinoptilolite rich mineral [PDF]

open access: yesMicroporous and Mesoporous Materials, 2012
Abstract Batch sorption experiments were performed in order to understand the potential value of local clinoptilolite rich mineral and its bacteria loaded form in Cr(VI) sorption. The results indicated that Cr(VI) sorption capacities of the sorbents were increased after bacteria loading and the clinoptilolite rich mineral is a promising material in ...
Cansever Erdoğan, Beyhan, Ülkü, Semra
openaire   +2 more sources

Stimulation of soil microbiological activity by clinoptilolite: The effect on plant growth [PDF]

open access: yesRatarstvo i Povrtarstvo, 2017
Zeolites can mitigate ammonium losses to the environment by taking up the ions from sources such as farmyard manure and ammonium-bearing fertilizers. This ability can improve nitrogen fertilizing practice given that ammonium ions loaded onto zeolite are ...
Karličić Vera   +6 more
doaj   +1 more source

Effects of Formic Acid on the Adsorption of K on Modified Clinoptilolite

open access: yesAdsorption Science & Technology, 2013
Adsorption of Escherichia coli K 88 on natural and acid-modified clinoptilolite was studied under ambient conditions. The materials under study were characterized in terms of surface area and cation-exchange capacity (CEC).
Qiujue Wu, Yanmin Zhou, Tian Wang
doaj   +1 more source

Hydrothermal transformation of clinoptilolite

open access: yesBulletin 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
openaire   +2 more sources

Improving Ammonium and Nitrate Release from Urea Using Clinoptilolite Zeolite and Compost Produced from Agricultural Wastes

open access: yesThe Scientific World Journal, 2015
Improper use of urea may cause environmental pollution through NH3 volatilization and NO3- leaching from urea. Clinoptilolite zeolite and compost could be used to control N loss from urea by controlling NH4+ and NO3- release from urea.
Latifah Omar   +2 more
doaj   +1 more source

Use of a Natural Clinoptilolite Monolith as a Negative Temperature Coefficient Thermistor

open access: yesEngineering 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
doaj   +1 more source

Adsorption of Sulfur Dioxide on Clinoptilolite/Nano Iron Oxide and Natural Clinoptilolite

open access: yesHealth 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
openaire   +2 more sources

Adsorption of uranyl ion on acid-modified zeolitic mineral clinoptilolite [PDF]

open access: yesHemijska 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
doaj   +1 more source

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