title: Release of agronomical nutrient from zeolitite substrate containing phosphatic waste.
abstract: The principal plant nutrients are phosphorous, nitrogen and potassium. Among these compounds, phosphorous is the most critical: it reacts rapidly, becoming an insoluble compound. The combination of zeolitites with phosphate materials (zeoponic substrate) agrees to a gradual and controlled phosphorous release in soils: phosphorous for plant uptake is released by the combination of dissolution and ion-exchange reactions. Animal bone ashes, rich in phosphorous and leached alone, release little amounts of soluble phosphorous and a great deal of alkaline sodium and potassium. Concerning chabazitic-zeolitite, it encourages a both gradual and growing soluble phosphorous release from animal bone ashes, in accordance with clinoptilolitic- and phillipsitic-zeolitite abilities; in particular, that release increases, thanks to both a higher zeolitite/bone ash ratio and ammonium enrichment of zeolitite. The use of zeolitite is environmentally sustainable in Italy because large amounts of deposits of zeolitite were present in Italy.
authors: Department of Engineering "Enzo Ferrari", University of Modena and Reggio Emilia, Modena, Italy, isabella.lancellotti@unimore.it.
authors: I
authors: I
authors: Lancellotti
authors: T
authors: T
authors: Toschi
authors: E
authors: E
authors: Passaglia
authors: L
authors: L
authors: Barbieri
mesh_terms: D000818:Animals; D001031:Apatites / Q000737:chemistry; D004784:Environmental Monitoring; D007558:Italy; D008903:Minerals / Q000737:chemistry; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis*; D063245:Plant Development; D011188:Potassium / Q000032:analysis; D012987:Soil / Q000737:chemistry*; D012995:Solubility; D014866:Waste Products; D017641:Zeolites / Q000737:chemistry*
chemical_list: D001031:Apatites; D008903:Minerals; D012987:Soil; D014866:Waste Products; D017641:Zeolites; D010758:Phosphorus; C028705:bone ash; D009584:Nitrogen; D011188:Potassium