Nitrate is an anion of major importance particularly in biological areas. Excessive amounts in water supplies indicate pollution from sewage or agricultural effluents. The effects of excessive quantities of nitrate in water are well known. In this research structural modification of natural clinoptilolite by isomorphic substitution was performed. Isomorphously substituted zeolite was prepared under melting conditions from natural clinoptilolite. [...]

Clinoptilolite (a natural zeolite) was used to investigate its adsorption capacity for the lead (II) ions from artificial polluted tap water in this study. For the experimental studies, Clinoptilolite mineral which is 25-140 mesh size was used by activating with HCl, and lead ion removal efficiencies were examined. Experiments were studied under laboratory batch and [...]

Zeolites are defined as aluminum silicates that have  made up of oxygen, aluminum and silicon. SiO4 and Alo4 tetrahedrals are the smallest units that give the specific shape to the molecule. There are more than 40 types of natural and over 150 types of  synthetic zeolites occurs and those zeolites are used in agriculture, animal husbandry, architecture, pharmaceuticals and [...]

The  calcium  exchanged  form  of   the  purified  natural  clinoptilolite  (NZ)  from  the  Tasajeras  deposit,  Cuba,  is the  active ingredient  o f  a drug  designed to  reduce total  blood  chole ste rol   and prevent atherosclerosis.  The  study  o f  the  Ca2+-NZ  -  human   bile  reaction  has  revealed  that  it occurs  through  the  adsorption  o f   three  [...]

Some   porous   materials, typically fibrous erionite, are toxic per se.  Others may be used as  ”model   solids ”  to  mimic   real pathogenic   minerals.  It has been hypothesized that erionite catalyses free radical generation which damage  DNA. Erionite released  OH”  only  when  incubated  with  ferric  iron.  Iron  mobility  in  asbestos  has  been  studied  by [...]