A process for producing zeolites comprising: a) calcining a clay material to form an amorphous material from clay components in the clay material, b) leaching the material from step (a) in a leaching solution to produce a solution containing dissolved aluminium and dissolved silica and a solid residue, c) separating the solid residue from the solution, and d) crystallising zeolites from the solution from step (c).

A process for producing zeolites comprising: a) calcining a clay material to form an amorphous material from clay components in the clay material, b) leaching the material from step (a) in a leaching solution to produce a solution containing dissolved aluminium and dissolved silica and a solid residue, c) separating the solid residue from the solution, and d) crystallising zeolites from the solution from step (c).

The present invention provides a treatment method of a radioactive iodine-containing fluid, comprising passing the radioactive iodine-containing fluid through an adsorbent for iodine consisting of a silver-containing binderless zeolite molded body having a silver content of 50 mass % or less, to adsorb the radioactive iodine on the adsorbent for iodine.

The present invention provides a treatment method of a radioactive iodine-containing fluid, comprising passing the radioactive iodine-containing fluid through an adsorbent for iodine consisting of a silver-containing binderless zeolite molded body having a silver content of 50 mass % or less, to adsorb the radioactive iodine on the adsorbent for iodine.

A method of plant growth promotion includes the steps of mixing synthetic high aluminum zeolite A with soil around seeds of a desired plant. The zeolite A may be ion exchanged with nutrients including a plant growth promoter chosen from the group consisting of copper, zinc and mixtures thereof included in the amount of at least about 0.04 meq/g. Preferably, the zeolite A has a moisture reserve capacity of at least about 30 wt %. Preferred synthetic zeolite A compositions may have at least double the ion exchange capacity of Clinoptilolite.

A method of plant growth promotion includes the steps of mixing synthetic high aluminum zeolite A with soil around seeds of a desired plant. The zeolite A may be ion exchanged with nutrients including a plant growth promoter chosen from the group consisting of copper, zinc and mixtures thereof included in the amount of at least about 0.04 meq/g. Preferably, the zeolite A has a moisture reserve capacity of at least about 30 wt %. Preferred synthetic zeolite A compositions may have at least double the ion exchange capacity of Clinoptilolite.

Provided are a novel synthesis technique for producing a metal promoted aluminosilicate zeolite having a small pore framework comprising the step of reacting a synthesis gel comprising at least one promoter metal containing zeolite, a structure directing agent and an optional additional silica source; and methods of using the same.

Provided are a novel synthesis technique for producing a metal promoted aluminosilicate zeolite having a small pore framework comprising the step of reacting a synthesis gel comprising at least one promoter metal containing zeolite, a structure directing agent and an optional additional silica source; and methods of using the same.

The present invention provides a treatment method of a radioactive iodine-containing fluid, comprising passing the radioactive iodine-containing fluid through an adsorbent for iodine consisting of a silver-containing binderless zeolite molded body having a silver content of 50 mass % or less, to adsorb the radioactive iodine on the adsorbent for iodine.

A method of forming a zeolite composition for waste treatment is disclosed herein. The method includes refining kaolin to form a metakaolin; mixing the metakaolin with sodium hydroxide (NaOH) to obtain a mixture; aging and heating the mixture; washing the mixture; drying the mixture in a microwave to obtain crystals; and obtaining a zeolite composition.