Preparation and characterization of controlled-release fertilizers coated with marine polysaccharide derivatives
Encapsulation of water-soluble nitrogen fertilizers by membranes can be used to control the release of nutrients to maximize the fertilization effect and reduce environmental pollution. In this research, we formulated a new double-coated controlled-release fertilizer (CRF) by using food-grade microc...
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Published in | Chinese journal of oceanology and limnology Vol. 35; no. 5; pp. 1086 - 1093 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Heidelberg
Science Press
01.09.2017
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
ISSN | 0254-4059 2096-5508 1993-5005 2523-3521 |
DOI | 10.1007/s00343-017-6074-9 |
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Summary: | Encapsulation of water-soluble nitrogen fertilizers by membranes can be used to control the release of nutrients to maximize the fertilization effect and reduce environmental pollution. In this research, we formulated a new double-coated controlled-release fertilizer (CRF) by using food-grade microcrystalline wax (MW) and marine polysaccharide derivatives (calcium alginate and chitosan-glutaraldehyde copolymer). The pellets of water-soluble nitrogen fertilizer were coated with the marine polysaccharide derivatives and MW. A convenient and eco-friendly method was used to prepare the CRF. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were used to characterize the morphology and composition of the products. The nitrogen-release properties were determined in water using UV-Vis spectrophotometry. The controlled-release properties of the fertilizer were improved dramatically after coating with MW and the marine polysaccharide derivatives. The results show that the double-coated CRFs can release nitrogen in a controlled manner, have excellent controlled-release features, and meet the European Standard for CRFs. |
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Bibliography: | WANG Jing1,2, 3, LIU Song 1, 3 QIN Yukun 1, 3 CHEN Xiaolin 1, 3, XING Rong'e 1, 3, YU Huahua 1, 3, LI Kecheng 1, 3, LI Pengcheng 1,3(1 Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China 2 University of Chinese Academy of Sciences, Beijing 100049, China 3 Key Laboratory ofExperimen tal Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China) Encapsulation of water-soluble nitrogen fertilizers by membranes can be used to control the release of nutrients to maximize the fertilization effect and reduce environmental pollution. In this research, we formulated a new double-coated controlled-release fertilizer (CRF) by using food-grade microcrystalline wax (MW) and marine polysaccharide derivatives (calcium alginate and chitosan-glutaraldehyde copolymer). The pellets of water-soluble nitrogen fertilizer were coated with the marine polysaccharide derivatives and MW. A convenient and eco-friendly method was used to prepare the CRF. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were used to characterize the morphology and composition of the products. The nitrogen-release properties were determined in water using UV-Vis spectrophotometry. The controlled-release properties of the fertilizer were improved dramatically after coating with MW and the marine polysaccharide derivatives. The results show that the double-coated CRFs can release nitrogen in a controlled manner, have excellent controlled-release features, and meet the European Standard for CRFs. 37-1150/P marine polysaccharide; microcrystalline wax; double-coating; controlled-release; water-soluble fertilizer ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 |
ISSN: | 0254-4059 2096-5508 1993-5005 2523-3521 |
DOI: | 10.1007/s00343-017-6074-9 |