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Abstract
Alginate is an organic polymer that is isolated from brown algae and bacteria, while the zeolite is an aluminosilicate mineral sample. The purpose of this study was to synthesize composite alginate / zeolite / Fe, characterize composite alginate / zeolite / Fe, and assessing the release properties of Fe (III) of the composite alginate / zeolite / Fe. Characterization of the composite is done by observing the color composite macroscopically, and observing the pattern of distribution of zeolite particles in composites using SEM (Scanning Electron Microscope). As for assessing the release of Fe (III) of the composite system made by soaking the composite in a solution of citric acid 0,33M for nine hours. Components of Fe (III) were dissolved in acid systems were analyzed using UV-Vis spectrophotometer.
The results showed that the composite alginate / zeolite / Fe have colors that are significantly dependent on the component ratio of alginate and zeolitnya. SEM analysis provides information that the zeolites distributed evenly on alginate-Fe phase. The release profile of Fe (III) of the composite alginate / zeolite / Fe weight variation component alginate produced three mechanisms to increase and decrease the rate of release of Fe (III). While the release profile of Fe (III) of the composite alginate / zeolite / Fe by weight of the zeolite component generates two mechanisms that increase and decrease the rate of release of Fe (III).Keywords
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References
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- Trenkel, M.E. 2010. Slow- and Controlled-Release and Stabilized Fertilizers: An Option for Enhancing Nutrient Use Efficiency in Agriculture. International Fertilizer Industry Association, Paris.
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References
Bhattacharya, I., Bandyopadhyay, S., Varadachari, C., Ghosh, K., 2007. Development of a Novel Slow-Releasing Iron−Manganese Fertilizer Compound. Ind. Eng. Chem. 46, 2870–2876.
Capek, L., Kreibich, V., Dedecek, J., Grygar, T., Wichterlova, B., Sobalık, Z., Martens, J.A., Brosius, R., Tokarova, V. 2005. Analysis Of Fe Species In Zeolites By UV–VIS–NIR, IR Spectra And Voltammetry. Effect Of Preparation, Fe Loading And Zeolite Type. Micro. Meso. Materials 80, 279–289.
Chandra, P. K., Ghosh, K., Chandrika, V. 2009. A New Slow-Releasing Iron Fertilizer. Chem. Eng. J. 155, 451–456.
Chaplin, Martin. 2012. Water Structure and Science : Alginate. ARTICLE
Chmielewská, E., Sabová. 2005. Contemporary And Prospects For New Generation Of Environmental Nanocomposed Zeoadsorbents. Petrol. Coal 47 (3), 6-9.
Hochmuth, G. 2011. Iron (Fe) Nutrition of Plants. IFAS extension.SL353.
Janardhanan K., Shrivastava, Y., Nair, B.U. 2004. Studies On the Nature of Interaction of Iron(III) With Alginates. Biochimica et Biophysica Acta 1670, 121– 125.
Monsanto company. 2010. Iron Deficiency Chlorosis in Soybean. Agronomic Alert.
Pandey, A., Bera, D.,Shukla, A., and Ray, L., 2007. Studies on Cr(VI), Pb(II), and Cu(II) Adsorption-Desorption Using Calcium Alginate as Biopolymer. Chem.Spec.Bio., 19(1), 17-24.
Sartori, C. 1997. The Characterization of Alginate System for Biomedical Application. Thesis of Doctor Philosophy. Department of Materials Engineering, Brunei University
Shaviv, A., Mikkelsen, R.L., 1993. Controlled-Release Fertilizers To Increase Efficiency Of Nutrient Use And Minimize Environmental Degradation - A Review. Fertilizer research 35, 1–12.
Singh, K., Sharma, H.C., Singh, C.S., Singh, Y., Nishizawa, N.K., Mori, S. 2004. Effect Of Polyolefin Resin Coated Slow Release Iron Fertilizer And Its Methods Of Application On Rice Production In Calcareous Soil. Soil Sci. Plant Nutr. 50 (7), 1037-I042.
Trenkel, M.E. 2010. Slow- and Controlled-Release and Stabilized Fertilizers: An Option for Enhancing Nutrient Use Efficiency in Agriculture. International Fertilizer Industry Association, Paris.
Unuabonah, E.I., Adebowale, K.O., Olu-Owolabi, B.I., Yang, L.Z., Kong, L.X. 2008. Adsorption Of Pb (II) And Cd (II) From Aqueous Solutions Onto Sodium Tetraborate-Modified Kaolinite Clay: Equilibrium And Thermodynamic Studies. Hydrometallurgy, 93, pp 1-9.