Zeolite tuff as strength improver in cements

Research background. In the recent years, considerable attention has been given to selenium (Se) status since its deficiency is linked with various disorders and affects at least 13 % of world population. Additionally, mushrooms are known to possess pronounced capacity for absorption of various micronutrients, including Se, from soil/substrate. Here, the possibility of using Se-rich zeolite tuff as a supplement for production of selenized mushroom is investigated. Further, the impact of enrichment on the activity of antioxidant enzymes and biological potential of Coriolus versicolor medicinal mushroom is studied. Experimental approach. Se(IV)- and Se(VI)-modified natural zeolitic tuff from the Serbian deposit Zlatokop was used as substrate supplement in mushroom cultivation. To examine effectiveness of selenium enrichment, beside inductively coupled plasma mass spectrometry (ICP-MS) analysis of total selenium content, determination of antioxidant enzymes in fresh fruiting bodies as well as testing of biological potential of methanol extracts was done. Antioxidant activity was evaluated using tests pertaining to different ways of antioxidant action: inhibition of lipid peroxidation, DPPH free radical scavenging assay, ferric-reducing antioxidant power assay and chelating ability on ferrous ions. The antibacterial activity against foodborne pathogens was measured by broth microdilution assay. Additionally, chemical composition of prepared extracts was studied using UV-Vis and FTIR spectroscopy analyses. Results and conclusions. Content of selenium detected in biofortified C. versicolor was even 470 times higher compared to control ((140.7±3.8) vs (0.3±0.1) µg/g dry mass), proving that Se-rich zeolite tuff is excellent supplement for mushroom production. Further, the results of monitoring the activity of antioxidant enzymes revealed that most of the Se-enriched mushrooms exhibited higher superoxide dismutase (SOD) and catalase (CAT) and lower glutathione peroxidase (GSH-Px) activity than control. Due to elevated level of enzymes, selenated mushrooms could quickly respond to superoxide radicals, formed as a result of detachment, and thus presumably preserve quality for a longer period of time. Investigation of biological potential indicated that Se-enriched mushroom methanol extracts, generally, expressed enhanced antioxidant properties. Additionally, extracts asserted antibacterial activity against all tested pathogenic microorganisms. Novelty and scientific contribution. Cultivation of mushrooms on Se-enriched zeolite tuff is a new technological approach for obtaining Se-fortified food/supplements with enhanced antioxidant and antibacterial activity.

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Comparative Study of Metakaolin and Zeolite Tuff Influence on Properties of High-Strength Concrete

10.4028/www.scientific.net/cta.1.179 ◽

2022 ◽

Author(s):

Leonid I. Dvorkin ◽

Vadim Zhitkovsky ◽

Nataliya Lushnikova ◽

Mohammed Sonebi

Keyword(s):

High Strength ◽

Economic Feasibility ◽

Mineral Admixture ◽

Mineral Admixtures ◽

High Dispersion ◽

High Dispersity ◽

Energy Consuming ◽

Effective Use ◽

Pozzolanic Properties ◽

Zeolite Tuff

Composite admixtures which include active pozzolanic components and high-range water reducers, allows to obtain high-strength, particularly dense and durable concrete to achieve a reduction in resources and energy consumption of manufacturing.Zeolite, containing a significant amount of active silica, can serve as one of the alternative substances to resources and energy consuming mineral admixtures like metakaolin and silica fume. The deposits of zeolites are developed in Transcarpathia (Ukraine), USA, Japan, New Zealand, Iceland and other countries. It is known that zeolite tuffs exhibit pozzolanic properties and are capable to substitution reactions with calcium hydroxide.However, the high dispersion of zeolite rocks leads to a significant increase in the water consumption of concrete. Simultaneous introduction of zeolite tuffs with superplasticizers, which significantly reduce the water content, creates the preconditions for their effective use in high-strength concrete.Along with dehydrated (calcined) zeolite, natural (non-calcined) zeolite expresses itself as an effective mineral admixture of concrete. When using non-calcined zeolite, the effect of increasing in compressive strength at the age of 3 and 7 days is close to the effect obtained when using dehydrated zeolite: 8-10% and 10- 12%, respectively, and 28 days the strength growth is 13-22%. The use of non-calcined zeolite has a significant economic feasibility, so it certainly deserves attention. There were compared the effect of zeolite to metakaolinThe results of the research indicate that the use of composite admixtures, consisted of calcined (non-calcined) zeolite tuff of high dispersity and superplasticizer of naphthalene formaldehyde type, allows to obtain concretes classes C50…C65.

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The effect of zeolite addition on parameters of concrete containing recycled ceramic aggregate

E3S Web of Conferences ◽

10.1051/e3sconf/20184500116 ◽

2018 ◽

Vol 45 ◽

pp. 00116

Author(s):

Jacek Szulej ◽

Paweł Ogrodnik

Keyword(s):

Compressive Strength ◽

Material Properties ◽

Frost Resistance ◽

Environmentally Friendly ◽

Concrete Material ◽

Dominant Component ◽

Concrete Mix ◽

Aluminous Cement ◽

Compressive Strength Of Concrete ◽

Zeolite Tuff

In the paper it was decided to recognize the material characteristics of concrete based on ceramic aggregate, aluminous cement with the addition of zeolite (5%, 10%, 15%) and air entraining admixture. Aggregate crushed to 2 fractions was used for designing the concrete mix : 0-4 mm, and 4-8 mm. The research involved the use of clinoptilolite derived from the zeolite tuff deposit at Sokyrnytsya (Transcarpathia, Ukraine). The dominant component in the zeolite is clinoptilolite in an amount of about 75%. The research carried out by the authors showed that the addition of zeolite, among others, increases the compressive strength of concrete, significantly improves the frost resistance, which in the case of using only aluminous cement is very low. The obtained results confirm the possibility of using the above-mentioned components, which improve the concrete material properties and are environmentally friendly.

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Adsorption of Cu(II), Pb(II) and humic acid on natural zeolite tuff in single and binary systems

Separation and Purification Technology ◽

10.1016/j.seppur.2008.01.004 ◽

2008 ◽

Vol 62 (1) ◽

pp. 64-70 ◽

Cited By ~ 99

Author(s):

Shaobin Wang ◽

T. Terdkiatburana ◽

M.O. Tadé

Keyword(s):

Humic Acid ◽

Natural Zeolite ◽

Binary Systems ◽

Single And Binary Systems ◽

Zeolite Tuff

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ChemInform Abstract: Removal of Lead and Nickel Ions Using Zeolite Tuff.

ChemInform ◽

10.1002/chin.199736281 ◽

2010 ◽

Vol 28 (36) ◽

pp. no-no

Author(s):

A. AL-HAJ ALI ◽

R. EL-BISHTAWI

Keyword(s):

Nickel Ions ◽

Zeolite Tuff

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The use of natural sorbents in the technology of obtaining a source of trace element additives in the soil

E3S Web of Conferences ◽

10.1051/e3sconf/202021004001 ◽

2020 ◽

Vol 210 ◽

pp. 04001

Author(s):

Irina Bardamova ◽

Svetlana Doroshkevich ◽

Nadezhda Khiterkheeva ◽

Sofya Petrova ◽

Tatiana Kocheva

Keyword(s):

Trace Element ◽

Production Technology ◽

Natural Sorbents ◽

Green Mass ◽

Sorption Method ◽

Zeolite Tuff ◽

Grain Diameter

Molybdenum-containing non-traditional fertilizers based on zeolite tuff of the Kholinsky deposit were obtained by sorption method. The main stages of the production technology: granulation-screening with a grain diameter of 1÷2 mm; modification with molybdenum (VI) ions. Molybdenum-containing zeolite tuffs of the Kholinsky Deposit increase the yield of peas by a green mass.

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Ammonium adsorption by chabazite zeolite-tuff from swine manure for soil amendment

10.5194/egusphere-egu2020-17916 ◽

2020 ◽

Author(s):

Giulio Galamini ◽

Giacomo Ferretti ◽

Valeria Medoro ◽

Nicola Tescaro ◽

Barbara Faccini ◽

...

Keyword(s):

Grain Size ◽

Free Energy ◽

Soil Amendment ◽

Swine Manure ◽

Standard Entropy ◽

Order Kinetic ◽

Natural Sorbent ◽

Grain Sizes ◽

Sorption Dynamics ◽

Zeolite Tuff

The use of natural sorbent geomaterials, like zeolitites (rocks containing > 50% of zeolites) is recognized as a valid method to recover N in the form of ammonium ions (NH4+) from Zootechnical Wastewaters (ZoWs).Using zeolite-rich tuff as N sorbent from ZoWs lead to varius advantages like the decrease in environmental impact of ZoWs (decreased N content) and the subsequent creation of a high-value soil amendment employable also in organic agriculture (NH4-charged zeolite-tuff).In order to understand the characteristics of NH4-charged zeolites (CZ) as sorbent, it is mandatory a deep investigation on their sorption dynamics when they react with ZoWs. Scientific literature is rich of studies about sorption in sintetic solutions (especially NH4CL) while it lacks studies about sorption in real ZoWs.The aim of this work was therefore to characterize the NH4 sorption dynamics of a chabazite zeolite tuff from swine manure. In particular, two grain sizes were selected, a micronized (< 125 &#181;m, CHA&#181;) and a granular one (0.7-2.0 mm, CHAg). A series of batch experiments were performed to investigate the effects of temperature, contact time and grain size on sorption of NH4. Equilibrium data were fitted with appropriate isothermal models; kinetic models were also investigated to characterize the kinetik sorption reactions and the thermodinamic parameters like change in free energy (&#916;G), enthalpy (&#916;H) and entropy (&#916;S).Results have shown a significant grain size effect with respect to the equilibrium loading (qe), with better performances for CHA&#181; in all the temperatures investigated; the isothermal data showed that the influence of temperature is less for CHA&#181; with respect to CHAg.The kinetic data differs from the two grain size investigated, in particular CHAg showed an initial external surface adsorption and macropore diffusion during the first 60 minutes of contact, then the diffusion occurs also inside the micropores. The Intraparticle Diffusion model (ID) for CHA&#181; showed that the diffusion in the macropores are much more fast than CHAg and the intercept indicates the formation of a boundary layer thicker than CHAg. Pseudo-second-order kinetic model well explained CHAg behavior but not that of CHA&#181;. Both grain sizes were well explained by Elovich equation wich is a model used to explain the sorption kinetics for energetically heterogeneous solids surfaces (as likely the surface of the zeolite-tuff employed).Thermodinamic data showed that the energy in the liquid-solid adsorption surfaces increased during adsorption (&#916;H &#707; 0), thus the cation exchange reaction needs energy from the liquid phase.The free standard entropy change (&#916;S) is also positive, indicating that the NH4 sorption is a directional process with no significant differences with respect to the tested temperatures and that the randomness at the solid-solution interface increased during adsorption.The negative values of Gibbs free energy (&#916;G) indicates that the NH4 sorption is an exergonic process (spontaneous reaction).

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Isotherms, Kinetics, and Thermodynamics of NH4+ Adsorption in Raw Liquid Manure by Using Natural Chabazite Zeolite-Rich Tuff

Water ◽

10.3390/w12102944 ◽

2020 ◽

Vol 12 (10) ◽

pp. 2944

Author(s):

Giulio Galamini ◽

Giacomo Ferretti ◽

Valeria Medoro ◽

Nicola Tescaro ◽

Barbara Faccini ◽

...

Keyword(s):

Swine Manure ◽

Animal Manure ◽

Liquid Manure ◽

Liquid Swine Manure ◽

Adsorption Capacities ◽

Natural Adsorbents ◽

Pseudo Second Order ◽

Effects Of Temperature ◽

Adsorption Rates ◽

Zeolite Tuff

The search for safer and sustainable management of animal manure is a global and topical challenge, in particular for the reduction of nitrogen (N) content. The use of natural adsorbents as zeolite-rich tuffs is recognized as a valid method to recover N, in the form of ammonium (NH4+), from animal manure. While the scientific literature is rich in studies performed on synthetic solutions and using clinoptilolite zeolites as adsorbent, it lacks information concerning adsorption in real liquid manure and using other types of zeolite-rich tuffs (e.g., chabazite). This work aims at exploring the NH4+ adsorption process from raw liquid swine manure, using a chabazite-rich zeolite tuff as adsorbent. The effects of temperature, contact time, and grain size have been assessed. Isotherms, kinetic models, and thermodynamic parameters have been investigated. Harkins-Jura isotherm correlates well with the observed data, in accordance with the formation of an adsorption multilayer. Kinetic data have been explained by intraparticle diffusion and pseudo-second-order models. In conclusion, the natural chabazite tuff has proven to be a valid material for NH4+ adsorption from raw liquid swine manure. In particular, to reach the highest adsorption capacities and adsorption rates, it is recommended to use it at a fine particle size and with dosages < 6 %.

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Crop response to the application of special natural amendments based on zeolite tuff

Plant Soil and Environment ◽

10.17221/4210-pse ◽

2011 ◽

Vol 48 (No. 3) ◽

pp. 118-124

Author(s):

A. Butorac ◽

T. Filipan ◽

F. Bašić ◽

J. Butorac ◽

M. Mesić ◽

...

Keyword(s):

Ion Exchange ◽

Crop Yield ◽

Yield Components ◽

Soil Acidity ◽

Harmful Effect ◽

Crop Response ◽

Fertilizing Effect ◽

Zeolite Tuff ◽

Increase Crop Yield ◽

Better Than

The conception of these investigations is based on the premise that a way should be found to eliminate, or at least mitigate, the harmful effect of excessive soil acidity without resorting to the massive and costly measures of liming. The main issue addressed in this study is how to increase crop yield by increasing nutrient availability rather than how to neutralize the soil. This as well as our earlier investigations, conducted on pseudogley of mesoelevations, indicate that this can be achieved by the application of special natural amendments (SNA) based on zeolite tuff, under the name Agrarvital (AV), in which clinoptilolite prevails while the remaining part is a mixture of soft lithothamnian limestone and dolomite (SLL+D). These amendments enhance ion exchange in the soil and their activation at a considerably lower pH than it is the case after liming. Fertilizing value of Agrarvital (AV) and lime materials (LM) was evaluated according to the yields achieved and some yield components of the crops grown. The results point to the good fertilizing effect of AV upon yields of winter wheat, maize, soybean and winter barley, equal to or better than the effect of conventional LM applied at several times higher rates. 

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