Zeolite - Volcanic Raw Materials
What are zeolites?
The term zeolite is generally used to describe rocks that consist mainly of minerals from the zeolite group. They belong to the tectosilicates. Their outstanding properties can be explained by their mineralogical structure, which, in a simplified manner, can be divided into three components:
- Three-dimensional, negatively charged crystal lattice of silicon and aluminum oxide with a pronounced pore system
- Cations for charge equalization
- Water inside the cavities
Zeolites are microporous, crystalline aluminosilicates of mineral origin characterized by a unique structure. This structure consists of a three-dimensional framework of SiO4 and AlO4 tetrahedra, connected to each other via oxygen atoms. The substitution of silicon by aluminum in the crystal structure creates negatively charged frames, which are balanced by the presence of cations such as potassium, sodium, calcium and magnesium. These cations are located in the pores and channels of the zeolite and can be easily exchanged for other cations, making zeolites excellent ion exchangers.
Due to their properties as ion exchangers, zeolites can have positive effects on the soil and thus indirectly on plant growth:
Water storage:
Due to their porous structure, zeolites can store large quantities of water and release it back into the environment as required. This supports the regulation of soil moisture – a particular advantage in dry regions.
Nutrient storage and release:
The ability of zeolites to exchange cations enables them to chemically store nutrients such as nitrogen, potassium and magnesium and release them slowly to the plants as required. This leads to a more efficient use of fertilizers and a reduction in nutrient wastage.
Improvement of the soil structure
The addition of zeolites can improve the soil structure by increasing aeration and reducing compaction. This promotes root development and improves water and air flow in the soil.
Improvement of the soil structure
The addition of zeolites can improve the soil structure by increasing aeration and reducing compaction. This promotes root development and improves water and air flow in the soil.
pH value regulation
Zeolites can help to stabilize the pH value of the soil. This is an important factor for the growth of many plants.
Effect on plant growth
The positive effects of zeolites on the soil indirectly promot plant growth:
Improved nutrient availability
By storing and releasing nutrients in a controlled manner, plants can absorb them more efficiently. Reduced stress during dry periods The ability of zeolites to store water and release it when required helps plants to survive dry periods better.
Disease prevention
Improving soil structure and aeration can help reduce the risk of root diseases.
Overall, zeolites can be used as soil conditioners to optimize the physical and chemical properties of the soil and thus increase plant growth and yield.