The porous clay granules have numerous positive properties and are therefore very popular in plant breeding. If the beads are no longer useful, many hobby gardeners are faced with the question of how to dispose of them properly.
Expanded clay can be put in the residual waste or in the compost
How to dispose of expanded clay (19.73€):
- residual waste: if the shares are small
- rubble: for large quantities that occur, for example, during renovation work
- compost: ideal for granules from your own hydroponics
residual waste
If you accumulate large amounts of clay granulate that you no longer want to use, you can dispose of the material in the residual waste bin provided. This waste is then thermally recycled.
rubble
Expanded clay is occasionally used as an insulating material, which offers protection against heat and noise and has a positive effect on the indoor climate. If expanded clay pellets occur during renovation work on buildings, these residues can be disposed of as construction waste.
This includes mineral products that are not contaminated. The granules are environmentally neutral and can be recycled without any problems. Cleaned clay balls serve as a basis for lightweight concrete or act as a binding element in the cement. In road construction they provide a filling material.
costs
Many recycling centers accept small quantities of expanded clay up to 0.1 cubic meters (corresponds to 100 liters) free of charge. In Munich, a flat fee of 18 euros is charged for mineral waste up to 200 kilograms. This can vary in other regions and cities, so you should inquire at the recycling facility in your area beforehand.
Beware of contamination
It can happen that expanded clay does not appear as the sole building material. Paints, varnishes and resins used in the construction industry can adhere to the beads. Then there is a risk that residues of chemicals have been deposited in the pores. If in doubt, you should ask at the local recycling center.
compost
Although the clay granulate is not biodegradable, as a natural substrate it can easily be mixed into the compost. It remains in the soil and then provides a loose structure in beds. In addition, the beads increase the water storage capacity of the subsoil without promoting waterlogging.
tips
Small amounts of expanded clay adhering to roots are not a problem in composting plants. You can therefore easily dispose of them in the compost bin.