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Showing 1 to 19 of 19 for “"clinoptilolite"”.
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A study on the removal of common analgesics from waste water, using zeolites Clinoptilolite and Beta
… their adsorptive possibilities. The zeolites clinoptilolite and beta (BEA) were used as the absorbents and were ion-exchanged with Cu (II), Fe (III) and NH4+ ions, with the aim of removing acetaminophen and ibuprofen from water. IR, XRD, HPLC and BET experiments were performed to measure …
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Bioremediation of modelled petroleum-contaminated soils of the Niger Delta and the impact of zeolite augmentation
… crude oil. The influences of a zeolite (clinoptilolite), soil structure and particle size on biodegradation of crude oil in modelled silt-clay and sandy soil of Niger Delta was investigated. Soils from the Hilton site, East-Shropshire, United Kingdom were used for the Niger Delta soils …
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Characteristics and Mechanisms of Heavy Metal and MTBE Adsorption on Zeolites and Applications in Permeable Reactive Barriers
… to explore the mechanisms of Pb adsorption onto clinoptilolite and ZSM-5 with or without the presence of MTBE. The batch tests show that ZSM-5 has a low adsorption capacity towards Pb, while clinoptilolite is efficient (14.39 mg/g versus 94.38 mg/g at pH 4) due to their hydrophobicity and CEC. In …
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Wastewater treatment by novel hybrid biological – ion exchange processes
… advantages and reliability of ion exchanging clinoptilolite in combination with biological treatment to remove ammonium from municipal sewage. A second process, HAMBgR (Hybrid Adsorption Membrane Biological Reactor), combines both ion exchange resin and bacteria into a single reactor to treat …
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Equilibrium studies of ion sorption on zeolitized tuff from Rainier Mesa, Nye County, Nevada
… tuff from Rainier Mesa, Nevada, and on clinoptilolite from Jordan Valley, Oregon. The fractional uptake of the ions on the zeolitized tuff was investigated so that sorption isotherms and partitioning coefficients describing the affinity of the ions for the zeolitized tuff could be …
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Origin and Diagenesis of Lacustrine Sediments of the Late Oligocene Creede Formation, Southwestern Colorado
… The abundance of clinoptilolite - Al-smectite in drillcore CCM-2 is consistent with diagenetic waters having low to moderate salinity and a pH of 7-9. The higher-grade mineral assemblage (analcime, K-feldspar, quartz, interstratified illite/smectite and …
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Physical and geochemical characterisation of canal sediments in the Black Country, West Midlands.
… pilot study to investigate the efficiency of the clinoptilolite showed that there was a concentration difference between PHEs adsorbed by the clinoptilolite and the PHE concentration lost from the sediments from three sites in the West Midlands. Thorough characterisation of the sediments was …
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ΠΑΡΑΓΩΓΗ ΕΔΑΦΟΒΕΛΤΙΩΤΙΚΩΝ ΥΛΙΚΩΝ ΚΑΙ ΔΕΣΜΕΥΣΗ ΒΑΡΕΩΝ ΜΕΤΑΛΛΩΝ ΤΟΥ ΜΕ ΤΗ ΧΡΗΣΗ ΚΛΙΝΟΠΤΙΛΟΛΙΘΟΥ
… REFUSE, ITS EVALUATION AND THE USE OF GREEK CLINOPTILOLITE FOR THE IMMOBILIZATION OF THE HEAVY METALS PRESENT . THE COMPOSTING OF THE BIODEGRADABLE MATTER WAS PERFORMED IN AN OPEN SYSTEM AND THE AERATION OF THE SUBSTRATE WAS ACHIEVED BY PERIODICAL MIXING. THE COMPOSTING PROCESSES WERE STUDIED …
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Petrology and Diagenesis of Medium-Grained Clastic Sediments in the Back-Arc Basins of the Western Pacific Ocean (Japan, Daito)
… minerals and calcite, pore-fill cementation by clinoptilolite, heulandite, analcite and later sparry calcite, than those deposited during later and post stages of rifting and at a more rapid rate of burial. This observation implies that the large heat flow and fluid circulation associated with …
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Sediment-water interactions in three Holocene saline, alkaline playas, south-central Oregon: Mineralogy and geochemistry
… reactions in playa sediments are formation of clinoptilolite $(\pm$ searlesite) at 2 to 4 m depth in the Alkali playa, probably reflecting an influx of volcanic ash and K$\sp+$-fixation within collapsed smectite interlayers at the Alvord playa. Authigenic illite was not found.
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Environmentally Sustainable Mining: Reusable Zeolite for Sodium Mitigation from Potash Brine Impacted Groundwater
… is a significant concern. Zeolites, specifically clinoptilolite-rich zeolites, have drawn significant attention as a viable and cost-effective treatment method for contaminated solutions. Zeolite has been successful in the reclamation of saline coalbed natural gas co-produced solutions; however, …
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Synthesis of zeolites and their application as soil amendments to increase crop yield and potentially act as controlled release fertilizers.
… slow-release fertilizers has focused on natural Clinoptilolite, Phillipsite and Chabazite. The aim of this study was to synthesize zeolites, study their effectiveness as soil amendments and their ability to act as controlled release fertilizers to decrease nitrate leaching. Nitrate pollution of …
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The Provenance of Eocene Tuff Beds in the Fossil Butte Member of the Green River Formation of Wyoming: Relation to the Absaroka and Challis Volcanic Fields
… matrices have been altered to illite, calcite, clinoptilolite, analcime, albite, and K-feldspar. The variable alteration of the tuff beds confirms previous studies of Fossil Lake's salinity fluctuation through time. One outcrop (FB-10), which was previously interpreted to represent the K-spar …
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Improving bioenergy recovery from municipal wastewater with a novel cloth-filter anaerobic membrane bioreactor
… from permeate. Specifically, a natural zeolite (clinoptilolite) and two synthetic ion exchange resins (Purolite SSTC60 and Purolite C160) achieved an average effluent concentration of 1 mg/L TAN after 60, 118, and 107 bed volumes (BV), respectively. Alkaline regeneration of these adsorbents …
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Petrology and geochemistry of the Killdeer carbonates
… pyroluaite(?), rare clay, and zeolites.</p> <p>Clinoptilolite is the most common zeolite occurring in most of the rock types. Offretite and chabazite occur in intimate association; offretite rarely occurs alone in some of the rocks.</p> <p>The paragenetic sequence for the Killdeer sediments …
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Stratigraphy and sedimentary history of middle Cenozoic (Oligocene and Miocene) deposits in North Dakota
… mineral in these deposits and that the zeolites clinoptilolite, erionite, and heulandite are present in both the mudstone and sandstone units. No distinct mineralogic criterion for distinguishing the new units was found. Although previous workers have mentioned the tuffaceous aspect of these …
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Advancing wastewater valorization using anaerobic membrane bioreactors with bioaugmentation and ion-exchange, and bio-plastic production
… ammonium-nitrogen feed mixture. Application of clinoptilolite was determined to be an effective means for reducing ammonium-nitrogen concentration in the fermentation liquid and improved PHA accumulation by up to 29%. Overall, this study demonstrated the feasibility of using a complex organic …
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INNOVATIVE SYSTEMS FOR THE MITIGATION OF RISKS: CATALYSTS AND SMART MATERIALS FOR DETECTION AND DECONTAMINATION OF HAZARDOUS CHEMICAL, BIOLOGICAL AND EXPLOSIVE SUBSTANCES
… including bentonite montmorillonite and zeolite clinoptilolite, were selected to find an alternative and sustainable approach against the olive fruit fly parasite, Bactrocera oleae, the most damaging pest of olive tree cultivations in the Mediterranean area. The implementation of sustainable pest …