Controlled release of nitrate fertilizers by using acrylate-zeolite nanocomposite hybrid hydrogels

Preparation of agriculture products are significantly depended on water and fertilizers. Nitrogen which is existed in fertilizers is one the most important nutrient for plants growing. However, nitrogen washes in form of nitrate in farms leads to pollution of underground water. Slow or controlled release of fertilizer technology can be appropriate solution of this problem and can decrease environmental pollution considerably. In addition nutrient is delivered to plant root gradually. In this research by synthesis of zeloite nano-composite with acrylate structure, release behavior of ammonium nitrate as a fertilizer was studied. Since using nano-particle can leads to increase water uptake and improve release behavior in system, Y-type nano-zeolite is used as the dispersed component. The influence of reaction conditions, such as zeolite concentration and amount of fertilizer loading, on the swelling and release behavior of these nano-composite hybid hydrogels was investigated in detail. To verify the structural difference in the synthesized hybrid hydrogels, scanning electron microscopy (SEM) was used to identify the morphological changes as the concentration of nano-zeolite varied.

کلیدواژه ها:

Control release ، Nano-zeolite ، acrylate ، swelling ، hydrogel