Solid-state mechanochemical activation of clay minerals and soluble phosphate mixtures to obtain slow-release fertilizers
This work describes the development of potential multi-element slow-release fertilizers obtained by mechanochemical activation of mixtures of kaolinite and ammonium or potassium monohydrogen phosphates. Preliminary results of talc amorphization have also been included. The methodology consists of mi...
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| Veröffentlicht in: | Clay minerals 2015-06, Vol.50 (2), p.153-162 |
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| container_title | Clay minerals |
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| creator | Borges, Roger Brunatto, Silvio F Leitao, Alexandre A de Carvalho, Gustavo S. G Wypych, Fernando |
| description | This work describes the development of potential multi-element slow-release fertilizers obtained by mechanochemical activation of mixtures of kaolinite and ammonium or potassium monohydrogen phosphates. Preliminary results of talc amorphization have also been included. The methodology consists of milling the materials in a high-energy ball mill, where the influence of rotation and time of milling were investigated. The samples were characterized by XRD, FTIR, TGA/DTA, SEM and MAS-NMR. The experimental results explain the slow-release behaviour of the amorphous nanostructured materials in aqueous suspensions, especially the MAS-NMR spectra, which showed the changes in the chemical environment of the elements analysed. The materials displayed slow-release behaviour for phosphates probably because the aluminium ions in the mineral structure interact more thoroughly with phosphate than potassium or ammonium. Nevertheless, in general, all of the nutrients were released slowly. |
| doi_str_mv | 10.1180/claymin.2015.050.2.01 |
| format | Article |
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G ; Wypych, Fernando</creator><creatorcontrib>Borges, Roger ; Brunatto, Silvio F ; Leitao, Alexandre A ; de Carvalho, Gustavo S. G ; Wypych, Fernando</creatorcontrib><description>This work describes the development of potential multi-element slow-release fertilizers obtained by mechanochemical activation of mixtures of kaolinite and ammonium or potassium monohydrogen phosphates. Preliminary results of talc amorphization have also been included. The methodology consists of milling the materials in a high-energy ball mill, where the influence of rotation and time of milling were investigated. The samples were characterized by XRD, FTIR, TGA/DTA, SEM and MAS-NMR. The experimental results explain the slow-release behaviour of the amorphous nanostructured materials in aqueous suspensions, especially the MAS-NMR spectra, which showed the changes in the chemical environment of the elements analysed. 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G</creatorcontrib><creatorcontrib>Wypych, Fernando</creatorcontrib><title>Solid-state mechanochemical activation of clay minerals and soluble phosphate mixtures to obtain slow-release fertilizers</title><title>Clay minerals</title><description>This work describes the development of potential multi-element slow-release fertilizers obtained by mechanochemical activation of mixtures of kaolinite and ammonium or potassium monohydrogen phosphates. Preliminary results of talc amorphization have also been included. The methodology consists of milling the materials in a high-energy ball mill, where the influence of rotation and time of milling were investigated. The samples were characterized by XRD, FTIR, TGA/DTA, SEM and MAS-NMR. The experimental results explain the slow-release behaviour of the amorphous nanostructured materials in aqueous suspensions, especially the MAS-NMR spectra, which showed the changes in the chemical environment of the elements analysed. The materials displayed slow-release behaviour for phosphates probably because the aluminium ions in the mineral structure interact more thoroughly with phosphate than potassium or ammonium. Nevertheless, in general, all of the nutrients were released slowly.</description><subject>Activation</subject><subject>Aluminum</subject><subject>Amorphous materials</subject><subject>chemical properties</subject><subject>chemical reactions</subject><subject>clay mineral</subject><subject>Clay minerals</subject><subject>experimental studies</subject><subject>Fertilizers</subject><subject>geochemistry</subject><subject>kaolinite</subject><subject>macronutrients</subject><subject>mechanical properties</subject><subject>Mechanochemical activation</subject><subject>mineral composition</subject><subject>mineral fertilizers</subject><subject>Nutrients</subject><subject>Phosphates</subject><subject>Potassium</subject><subject>rock, sediment, soil</subject><subject>sheet silicates</subject><subject>silicates</subject><subject>soils</subject><subject>solid phase</subject><subject>solution</subject><issn>0009-8558</issn><issn>1471-8030</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqNkU-LFDEQxYMoOK5-BCFHQbqtJJ1N-iiD_2BhD-o5pNPVO1nSnTFJO46f3oy94E02l0rBe78q6hHymkHLmIZ3Ltjz7JeWA5MtSGh5C-wJ2bFOsUaDgKdkBwB9o6XUz8mLnO9rKzotduT8NQY_NrnYgnRGd7BLdAecvbOBWlf8T1t8XGic6GUMrXMw2ZCpXUaaY1iHgPR4iPl4-Evwv8qaMNMSaRyK9QvNIZ6ahAFtRjphKj7435jyS_JsqiB89VCvyPePH77tPzc3t5--7N_fNLYTujSj6LWcOu4USo7XiFLJDmodJmDXo4AeJO8EWtFZnHh9GsWESrtBDAyEuCJvNu4xxR8r5mJmnx2GYBeMazb1glooAPUIqVIgmGCKV6ncpC7FnBNO5pj8bNPZMDCXVMxDKuaSiqmpGG6AVd9-851sKJhGvEvruX7MfVzTUu_wf78EzuRl0bcb5Q5jdh4Xh6eYwviPsrl0D70UfwBDrqnX</recordid><startdate>201506</startdate><enddate>201506</enddate><creator>Borges, Roger</creator><creator>Brunatto, Silvio F</creator><creator>Leitao, Alexandre A</creator><creator>de Carvalho, Gustavo S. 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The experimental results explain the slow-release behaviour of the amorphous nanostructured materials in aqueous suspensions, especially the MAS-NMR spectra, which showed the changes in the chemical environment of the elements analysed. The materials displayed slow-release behaviour for phosphates probably because the aluminium ions in the mineral structure interact more thoroughly with phosphate than potassium or ammonium. Nevertheless, in general, all of the nutrients were released slowly.</abstract><pub>Mineralogical Society</pub><doi>10.1180/claymin.2015.050.2.01</doi><tpages>10</tpages></addata></record> |
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| ispartof | Clay minerals, 2015-06, Vol.50 (2), p.153-162 |
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| language | eng |
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| source | Cambridge University Press Journals Complete |
| subjects | Activation Aluminum Amorphous materials chemical properties chemical reactions clay mineral Clay minerals experimental studies Fertilizers geochemistry kaolinite macronutrients mechanical properties Mechanochemical activation mineral composition mineral fertilizers Nutrients Phosphates Potassium rock, sediment, soil sheet silicates silicates soils solid phase solution |
| title | Solid-state mechanochemical activation of clay minerals and soluble phosphate mixtures to obtain slow-release fertilizers |
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