How zeolite works on ammonia absorption in shrimp pond?

Hello everyone:
Everyone knows, In shrimp ponds, if ammonia increases then add zeolite to reduce ammonia. Everyone tells zeolite removes ammonia. But we must know the reaction for better clarification. 

Zeolite:
We can tell it is the type of mineral which contains sodium, aluminium, silicate. It has special function called adsorption (உறிஞ்சுதல்).
Zeolite have tetrahedral shape, it has a entry channels for adsorption. Zeolite can adsorbs 30% from their body weight. Imagine it can adsorbs how much? It is in powdered form.

Zeolite have pores for absorbing gases. It is mainly works on cationic exchange. 

How it works?

We don't directly apply zeolites granules to the water because if we applied directly means, there is chance for absorbing water and atmospheric air or other things through the pore size in zeolite in shrimp pond. So it make competition for absorbing ammonia.Our aim is for removing Ammonia. If we make some small balls or mixed the with sand and make balls is better for application. Because at this time if we make balls means there is less chance for contact with air . Then it will moves down to the pond and it's work will start.

Zeolites leaves it's negative charges on its surface. It attracts the positive ammonium ions and some other toxic metals. In the high concentration of ammonium ion, it absorbs this ion and leaves it's sodium to the water(cationic exchange process).
It is also used for the softening of water.

Zeolites functions based on salinity.

High salinity - reduces the ammonia adsorption.
Low salinity - increases the ammonia adsorption.

Why salinity affects adsorption?

Because high salinity have high concentration of minerals and cations. If the concentration of ammonium is lower than the minerals then the minerals make compete for the adsorption.
In this the zeolite will take some of minerals also due to their high concentration. It leads to reduce the level of minerals in water.

Less than 1 ppt Salinity have high adsorption of 9gm of ammonia per kilogram zeolite. Salinity increases then we have to add more zeolite.

                      Zeolite

                 Applied in water

            Sodium ions released

   Ammonia and toxic metals adsorbed

After adsorption of ammonia in water, zeolite makes the tight bond with ammonia and other toxic metals. It doesn't release it in water, then after some time it leached out very slowly and decomposed. I hope it will clears your doubt. 
Next blog will come with intresting topic.

I would like to thank the people who reads my blog from 22 different countries. Your reading gives some energy to me.

                               Thank you😊.

Mail: dhivagarfcri2000@gmail.com
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