Use of Zeolite in animal, poultry and aquatic nutrition

Zeolits are groups of aluminniuosilicate minerals of crystallized hydrated with small pores containing interchangeable cations from alkaline and alkaline earth metals with tridimentional lattice. these minerals are formed tetrahedral units AL04 and –SiO4 which are joined with oxygen atoms, that this structure produces channels and pores for passing water or exchangeable cat ions. formation of zeolites are in both natural and artificial methods: in natural method, it is formed at Salter alkaline lakes, alteration toufha,open system of underground water, alkaline medium soils and deep sediments of sea. In artificial method, zeolite formation has been done in two cases of kaolin alteration or solving H2O2 and AL2O3 at NaOH hot solution and mixing with sodium silicate ( Na2SiO3 ) .so far, more than 85 types of natural zeolite and 100 types of artificial zeolites have been presented to market that kelinoptilolite, analism, lamonite, flipside, murdenite and hulandite are the most abundant natural zeolites which there are a large resources of those in America, Bulgaria, Italy, Russia, geographically.in Iran this mineral substance has also been recognized that the most favorable regions for producing are zeolite resources like: the south of Damavand, around Varamin, in the southern part of talhe mountain and Semnan desert.