Solubility Characteristics and Slow-Release Mechanism of Nitrogen from Organic-Inorganic Compound Coated Urea
A soil incubation method was used to investigate the solubility characteristics and slow-release mechanism of organic-inorganic compound coated urea at temperature of 10, 20, and 30°C. The membrane microstructure with and without incubation was tested via scanning electron microscopy (SEM). Slow rel...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2015/705471 |
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| _version_ | 1832549417171812352 |
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| author | Hongtao Zou Yao Ling Xiuli Dang Na Yu YuLing Zhang YuLong Zhang Jianghui Dong |
| author_facet | Hongtao Zou Yao Ling Xiuli Dang Na Yu YuLing Zhang YuLong Zhang Jianghui Dong |
| author_sort | Hongtao Zou |
| collection | DOAJ |
| description | A soil incubation method was used to investigate the solubility characteristics and slow-release mechanism of organic-inorganic compound coated urea at temperature of 10, 20, and 30°C. The membrane microstructure with and without incubation was tested via scanning electron microscopy (SEM). Slow release of nitrogen (N) from different inorganic minerals was analysed by the activation energy from the nutrient solubility system. The rate of nitrogen solubility increased with temperature increasing. The first-order reaction kinetic equation described the solubility process of coated urea. The rate constant k also increased with temperature increasing. Moreover, the SEM images showed that the microstructure of the coating layer changed into a flocculent structure and the number of tiny pores and holes on the membrane surface increased significantly with temperature increasing, which increased N solubility rate. The Arrhenius equation indicated that activation energy was closely related to k during the solubility process; the activation energy was reduced with k rising, which resulted in N solubility rate increasing. Overall, the N solubility rate of coated urea was affected by temperature. |
| format | Article |
| id | doaj-art-febadb01f45a4b729af4786521c5b179 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-febadb01f45a4b729af4786521c5b1792025-02-03T06:11:21ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2015-01-01201510.1155/2015/705471705471Solubility Characteristics and Slow-Release Mechanism of Nitrogen from Organic-Inorganic Compound Coated UreaHongtao Zou0Yao Ling1Xiuli Dang2Na Yu3YuLing Zhang4YuLong Zhang5Jianghui Dong6College of Land and Environment, Shenyang Agricultural University, Northeast Key Open Laboratory of Soil and Environment, Ministry of Agriculture, State Engineering Laboratory of Efficient Use of Soil and Fertilizer Resources, Shenyang 110866, ChinaCollege of Land and Environment, Shenyang Agricultural University, Northeast Key Open Laboratory of Soil and Environment, Ministry of Agriculture, State Engineering Laboratory of Efficient Use of Soil and Fertilizer Resources, Shenyang 110866, ChinaCollege of Land and Environment, Shenyang Agricultural University, Northeast Key Open Laboratory of Soil and Environment, Ministry of Agriculture, State Engineering Laboratory of Efficient Use of Soil and Fertilizer Resources, Shenyang 110866, ChinaCollege of Land and Environment, Shenyang Agricultural University, Northeast Key Open Laboratory of Soil and Environment, Ministry of Agriculture, State Engineering Laboratory of Efficient Use of Soil and Fertilizer Resources, Shenyang 110866, ChinaCollege of Land and Environment, Shenyang Agricultural University, Northeast Key Open Laboratory of Soil and Environment, Ministry of Agriculture, State Engineering Laboratory of Efficient Use of Soil and Fertilizer Resources, Shenyang 110866, ChinaCollege of Land and Environment, Shenyang Agricultural University, Northeast Key Open Laboratory of Soil and Environment, Ministry of Agriculture, State Engineering Laboratory of Efficient Use of Soil and Fertilizer Resources, Shenyang 110866, ChinaSchool of Natural and Built Environments, University of South Australia, Adelaide, SA 5095, AustraliaA soil incubation method was used to investigate the solubility characteristics and slow-release mechanism of organic-inorganic compound coated urea at temperature of 10, 20, and 30°C. The membrane microstructure with and without incubation was tested via scanning electron microscopy (SEM). Slow release of nitrogen (N) from different inorganic minerals was analysed by the activation energy from the nutrient solubility system. The rate of nitrogen solubility increased with temperature increasing. The first-order reaction kinetic equation described the solubility process of coated urea. The rate constant k also increased with temperature increasing. Moreover, the SEM images showed that the microstructure of the coating layer changed into a flocculent structure and the number of tiny pores and holes on the membrane surface increased significantly with temperature increasing, which increased N solubility rate. The Arrhenius equation indicated that activation energy was closely related to k during the solubility process; the activation energy was reduced with k rising, which resulted in N solubility rate increasing. Overall, the N solubility rate of coated urea was affected by temperature.http://dx.doi.org/10.1155/2015/705471 |
| spellingShingle | Hongtao Zou Yao Ling Xiuli Dang Na Yu YuLing Zhang YuLong Zhang Jianghui Dong Solubility Characteristics and Slow-Release Mechanism of Nitrogen from Organic-Inorganic Compound Coated Urea International Journal of Photoenergy |
| title | Solubility Characteristics and Slow-Release Mechanism of Nitrogen from Organic-Inorganic Compound Coated Urea |
| title_full | Solubility Characteristics and Slow-Release Mechanism of Nitrogen from Organic-Inorganic Compound Coated Urea |
| title_fullStr | Solubility Characteristics and Slow-Release Mechanism of Nitrogen from Organic-Inorganic Compound Coated Urea |
| title_full_unstemmed | Solubility Characteristics and Slow-Release Mechanism of Nitrogen from Organic-Inorganic Compound Coated Urea |
| title_short | Solubility Characteristics and Slow-Release Mechanism of Nitrogen from Organic-Inorganic Compound Coated Urea |
| title_sort | solubility characteristics and slow release mechanism of nitrogen from organic inorganic compound coated urea |
| url | http://dx.doi.org/10.1155/2015/705471 |
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