Zeolite & pomice 3/7 mm (circa 31 kg - 33 lt), ammendante per piante Zeolite & pomice 3/7 mm (circa 31 kg - 33 lt), ammendante per piante
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Zeolite & pomice 3/7 mm (circa 31 kg - 33 lt), ammendante per piante

Zeolite & pumice 3/7 mm (about 27 kg - 33 l), plant amendment

0,50 €
13,00 €

(Price per liter (L)
0,39 €
)
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Product SKU: 000013

ZEOLITE & PUMICE 3/7 mm (c.ca 27 Kg - 33 lt) , SOILER FOR PLANTS.

50% blend of zeolite & pumice; the material has a small amount of processing dust useful for the growth and nourishment of plants. The product is a natural mix of the two minerals (not an artificial mix of pumice and zeolite); it is therefore a rock that has a composition that is halfway between pumice and zeolite.

Group of minerals consisting of 52 mineralogical species chemically defined as "hydrated aluminosilicates of alkaline and/or alkaline-earth elements" (essentially, Na, K and Ca) and structurally constituting the tectosilicate family with feldspars, feldspathoids and silica minerals. In this family of silicates, the primary structural units, tetrahedrons [(Si,Al)O4], are linked together in the three directions of space to form three-dimensional scaffolds resulting in a tetrahedral cation (Si, Al) to oxygen ratio of 1: 2.

Unlike what occurs in other silicate families where the same structural units are isolated (nesosilicates, e.g. olivine), connected in one direction (inosilicates, e.g. pyroxenes) or in two directions (phyllosilcates, e.g. clay minerals ), the three-dimensional tetrahedral scaffolding of tectosilicates gives rise to "open" structures due to the presence of extra-tretrahedral cavities of increasing volume from feldspars and silica minerals to feldspathoids and zeolites.

The three-dimensional tetrahedral scaffold of zeolites is "very open" (low tetrahedral density) and, as such, has large internal cavities (from 20 to 50% of the crystal volume) communicating with each other and with the outside through molecular-sized channels (from 2.5 to about 7 Å; 1 Å = 10 ?8 cm).

In their natural state, cavities and channels are occupied by cations (Na, K, Ca) and water molecules. The cations, necessary to balance the negative electric charges of the tetrahedral scaffold due to the partial replacement of Si4+ with Al3+, being weakly bound to the tetrahedral scaffold, enjoy a certain freedom of movement and can exit, through the channels, from the cavities and therefore from the crystal only if replaced by other cations carrying the same number of positive electric charges.

This property, known as "cation exchange capacity" (CSC), has an intensity (expressed in meq/g) that increases with the increase of the Al content in the tetrahedra and varies from about 2 meq/g in Al-poor zeolites (clinoptilolite , ferrierite mordenite) at 3-4 meq/g in Al-rich zeolites (chabasite, phillipsite).

The water, from 10 to 20% by weight depending on the zeolite species, can be easily and more or less continuously removed by heating below 300-350°C with no or modest modifications of the tetrahedral scaffolding.

The zeolites thus dehydrated have a large internal surface (up to a few hundred m2 per gram of substance) available to still host water molecules or other molecules with natural or induced polarity. The dehydration-rehydration process is almost infinitely reversible and the absorption of polar molecules takes place according to a strict "selection" based "firstly" on the size of the molecules and, secondly, on their degree of polarity.

 

AVERAGE CHEMICAL ANALYSIS

SiO 2 : 46.5%

Al 2 O 3 : 15.0%

2 O: 6.0%

Fe 2 O 3 : 3.0%

CaO: 10.0%

Na2O : 0.6%

TiO 2 : 0.5%

MgO: 2.3%

SO 3 : 0.3%

MnO: 0.1%

SrO: 0.1%

BaO: 0.05%

2 Or 5 : 0.1%

TECHNICAL FEATURES

pH: 6.9 ? 7.1;

HIGH CATION EXCHANGE CAPACITY: (CSC = 2 - 4 meq/g) and selective for cations with low solvation energy (NH4, K, Cs, Pb);

HIGH STRUCTURAL CRYPTOPOROSITY: (from 20 to 50% of the crystal volume);

REVERSIBLE DEHYDRATION ;

MOLECULAR SIEVING ;

WATER RETENTION ;

MECHANICAL RESISTANCE ;

PERMEABILITY ;

LOW DENSITY .

FUNCTIONAL CHARACTERISTICS AND FIELDS OF USE

Lightweight natural aggregate, ideal for:

? allows you to reduce watering by 30-40% thanks to the characteristics described above;

? neutralizes harmful elements, ammonium, heavy metals, organic molecules;

? absorbs odorous gases, ammonia, hydrogen sulphide, mercaptans;

? improves the exploitation of fertilizers, consequently reducing the quantities to be used;

? purification of waste water;

? rooting substrate (sowing, cuttings, transplants, soilless crops and hydroculture);

? preparation of universal soils;

? preparation of specific soils (annual plants, acidophilic plants, succulents, houseplants, turf?);

? preparation of professional soils for outdoor horticulture and for protected crops;

? land amendment;

? hydroculture;

? drainages;

? animal feeding, in quantities varying between 2 and 3% (reduction of the N-ammoniacal content of sewage, reduction of intestinal and respiratory diseases, inhibition of the absorption by animals of afla- and mycotoxins, slight improvement of feed conversion index, reduction of NH3 content and bad odors in farms and surrounding areas).

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Scheda sicurezza
https://docs.geosism.com/info-prodotti/schede-di-sicurezza?download=423:scheda-di-sicurezza-zeolite-pomice
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https://docs.geosism.com/info-prodotti/schede-tecniche?download=198:scheda-tecnica-zeolite-pomice&start=80
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