Characterization Of Natural Zeolite Research Articles

Characterization of Natural Zeolite and Bentonite and Their Use in CO2 Capture

Bu çalışmada doğal zeolit ve bentonit herhangi bir işleme tabi tutulmadan CO2 tutumunda adsorban malzemesi olarak kullanılmıştır. Temin edilen zeolit ve bentonitin yapısal özellikleri, X-ışını kırınımı (XRD) ve Fourier Dönüşümlü Kızılötesi Spektrofotometresi (FTIR) kullanılarak karakterize edilmiştir. Morfolojik özellikleri Taramalı Elektron Mikroskobu (SEM) ve N2-adsorpsiyon-desorpsiyon ölçümleri ise Brunauer–Emmett–Teller (BET) cihazları kullanılarak karakterize edilmiştir. Zeolit ve Bentonitin BET yüzey alanları ve CO2 yakalama performansı hem statik hem de akış koşulları altında incelenmiştir. Zeolit, yüksek mezogözenek hacmi ile 125,23 m2/g'lık yüksek bir BET yüzey alanı ve 25 °C ve 1 bar'da yüksek CO2 yakalama kapasitesi (38,7 mg/g) sergilemiştir. Buna ek olarak, Bentonit malzemesi zeolite göre daha düşük 53,79 m2/g'lık bir BET yüzey alanı ve daha düşük CO2 yakalama kapasitesi (20,53 mg/g) göstermiştir.

Characterization of Natural Zeolite and Determination of its Ion-exchange Potential for Selected Metal Ions in Water

Characterization of Natural Zeolite and Determination of its Ion-exchange Potential for Selected Metal Ions in Water

The Effect of K2O Concentration in K2O/Al2O3 Catalyst on Methyl Ester (Biodiesel) Synthesis from CPO Off Grade with Ultrasonic Wave

Fatty acid methyl esters can be made through transesterification of vegetable oils with homogeneous or heterogeneous catalysts. Ultrasonic waves and the type of catalyst affect the transesterification reaction. The purpose of this study was to determine the effect of ultrasonic waves on the transesterification of CPO with the K2O/Al2O3 catalyst. Research stages: CPO off grade characterization, activation and characterization of natural zeolite, preparation and characterization of K2O/Al2O3 catalysts, and oil esterification. Transesterification of CPO with K2O/Al2O3 catalyst (3% w/w) at various levels of K2O assisted by ultrasonic waves. The characterization of transesterification results includes density, viscosity, refractive index, and acid number. The use of ultrasonic waves reduces the transesterification reaction time from 120 to 35 minutes. The optimum conditions of methyl ester synthesis were achieved in the K2O/Al2O3 catalyst with K2O levels of 35% w/w, with a yield of 88.06%. Characteristics of the synthesized methyl ester include density, viscosity, refractive index, and acid number respectively are 0.891 g/mol, 7.86 cSt, 1.454 and 0.465 which are in accordance with SNI biodiesel.

Characterization of Badinsk Zeolite and its Use for Removal of Phosphorus and Nitrogen Compounds from Wastewater

The characterization of natural zeolite from Badinsk deposit was carried out by means of X-ray diffraction, scanning electronic microscopy, thermal analysis, Fourier transform infrared spectroscopy. The possibility of water purification from phosphates in dynamic conditions using of natural zeolite as a filtering bed was studied. The effect of the filtration rate of phosphates solution on purification efficiency is investigated. The mechanism of phosphates and ammonium removal with the participation of the zeolite is discussed: in case of phosphates it is the formation of insoluble compounds by reacting of calcium cations and phosphate anions; in case of ammonium ions it is ion exchange.

Synthesis and Characterization of Natural Zeolite with Ordered Ion Imprinted Polymer Structures (IIP@AFINZ) for Selective Cr(VI) Adsorption from Aqueous Solution

In this paper, it is reported for first time about modification of activated natural zeolite from Flores Island Indonesia with ion imprinted polymer (IIP@AFINZ) for selective adsorption of Cr(VI) from aqueous solution. Here, the IIP@AFINZ was prepared by using template ion, complex agent, monomer, cross-linker such as: Cr(VI), 4-Vp, EGDMA, BPO respectively. Polymerization was leading in porogent ethanol : acetone. Several adsorption parameter such as pH effect, mass adsorbent, contact times, temperature and initial sample concentration toward adsorption process of Cr(VI) were also studied. The maximum adsorption capacity for IIP@AFINZ is 6.476 mg/L higher than on the NIP@AFINZ is 3.266 mg/L. The process of adsorption follows pseudo-second-order kinetic model and Langmuir isotherm model. The competitive adsorption studied showed a good performance of IIP@AFINZ to adsorption the Cr(VI) ion from water sample. Moreover, the reusability test for five times Cr(VI) adsorption using IIP@AFINZ showed there was no decrease of adsorption capacity was observed.

Characterization of Natural Zeolite and Chicken Manure Derived Biochar for Carbon Dioxide Adsorption in Biogas

Although biogas is clean and environmentally friendly, its existence is often unsustainable, especially in rural area. Consumption of fossil fuel energy still dominates because cheaper, higher in energy efficiency and ready to use than biogas. One of the efforts to make biogas can compete with fossil fuel energy is by increasing calorific value. Reduction of carbon dioxide by adsorption enhances the calorific value that evidenced by methane enrichment. In this study, we investigated the effect three types of combined adsorbent: pure natural zeolite (Z-Z), zeolite-biochar from chicken manure (Z-B1) and zeolite-modified biochar (Z-B2) on methane content. The result showed that adsorption of biogas using Z-Z, Z-B1 and Z-B2 increased methane level with enhancement of 1,36; 28,92; and 11,27% respectively compared before adsorption. To confirm whether these results were influenced by adsorbent’s character or not as consequence adsorbent characterization have been done in this study.

Characterization and Utilization of Natural Zeolites in Technical Applications

Zeolites and zeolite rocks are commonly used in different industrial applications. Natural zeolites present an attractive material for environmental applications because of their high abundance, availability and low costs. Depending on geological settings and conditions during mineral formation, natural zeolite deposits usually represent a heterogeneous mixture of zeolite minerals together with varying amounts of gangue minerals (e. g. quartz, feldspars and phyllosilicates). Hence, profound mineralogical knowledge and a detailed characterization of natural zeolites are essential for tapping their full potential in any practical application. However, this is rarely done as detailed mineralogical characterizations are elaborate and often neglected in favour of bulk chemical analyses (e. g. XRF).In this paper we describe typical technical applications for natural zeolites as well as the requirements demanded for their use. An analytical protocol has been developed for the detailed characterization of natural zeolites for ammonium exchange consisting of a combination of mineralogical and chemical methods and is exemplarily demonstrated. The methodology comprises mineralogical investigations with X‑ray diffraction (XRD) and electron microprobe analyses (EPMA) to provide qualitative data on mineral compositions and in-situ analysis of mineral chemistry (Si/Al-ratio, cation contents). The examinations are accompanied by bulk chemical analysis (XRF) as well as thermoanalytical investigations (TG/DSC) to distinguish between certain zeolite minerals. Finally, ion exchange experiments for ammonium have been carried out to determine the cation exchange capacity (CEC) of zeolite samples for a defined range of concentrations.The aim of the study is to develop an analytical routine in order to enable the detailed characterization of natural zeolite samples with standardized means of mineralogical/chemical analysis prior to their application in technical processes. This is important for quality assurance and for identifying the best suited zeolites for specific technical processes, especially when the proposed applications are not standardized.

Characterization of Natural Zeolite and Study of Adsorption Properties of Heavy Metal Ions for Development of Zeolite Mine

The six natural zeolites collected in Pohang area, Kyungsangbuk-do, Korea, were characterized by XRD, XRF, DTA, TGA, and CEC analysis. The primary species of these zeolite are modenite, albite, and quarts in Kuryongpo-A (Ku-A), Kuryongpo-B (Ku-B), Kuryongpo-C (Ku-C), Donghae-A (Dh-A), Donghae-B (Dh-B), and Donghae-C (Dh-C) samples. The XRF analysis showed that the six zeolites contain Si, Al, Na, K, Mg, Ca, and Fe. Cation exchange capacity of Kuryongpo-C (Ku-C) zeolite was the highest compared to other zeolites. The capabilities of removing heavy metal ions such as , and were compared. The effect of reaction time in removing heavy metal ions was studied. The experimental results showed that the efficiency of removal was low for , and ions. These may be caused by the low content of zeolite in the six natural zeolites. This indicates that the adsorption capacity roughly tends to depend on the zeoite contents, ie., the grade of zeolite ore.

Mineralogical and geochemical characterization of natural zeolites from southwest Syria

The zeolitic minerals were recorded in association with the Upper Pliocene volcanic sequences in the southwestern region of Syria. As far as the authors are aware, the present work is first to characterize these potential deposits from the mineralogical and geochemical points of view. Three natural zeolite samples were collected from sedimentary–pyroclastic deposits of Om Ozon (OZ), Mukeihlat (MK), and Jabal Al-Sis (JS) areas. These samples were studied by x-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, x-ray fluorescence spectrometer (XRF), scanning electron microscopy (SEM), in combination with thermo analytical methods (differential thermal analysis (DTA) and thermo gravimetric analysis (TGA)). A variety of zeolite species, including phillipsite, analcime, and chabazite were identified in addition to variable quotients of calcite and quartz. Several characteristics of these minerals were determined such as chemical functional groups, chemical components, morphology of crystals, and thermal behaviors.

방사성 핵종 제거를 위한 천연 제올라이트 특성 연구

방사성 핵종 제거를 위한 천연 제올라이트 특성 연구

Characterization of Natural Zeolites and Clay Minerals by High-Resolution Solid-State NMR

Characterization of Natural Zeolites and Clay Minerals by High-Resolution Solid-State NMR

Characterization of Natural Zeolites and Three Kinds of Inorganic Admixtures for Concrete

Characterization of Natural Zeolites and Three Kinds of Inorganic Admixtures for Concrete