Margie , Agami Haq, and Septiana , Triwiningsih, and S, Suherman (2012) PEMBUATAN UREA PELEPASAN LEPAS LAMBAT MELALUI PELAPISAN DENGAN AMILUM-ACRYLIC. JURNAL TEKNOLOGI KIMIA DAN INDUSTRI, 1 (1). pp. 229-236. ISSN Diponegoro University
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Official URL: http://ejournal-s1.undip.ac.id/index.php/jtki/arti...
The controlled release technology by coating for increasing the efficiency of fertilizer can reduce fertilizer’s losses and minimize environmental pollution. Starch mixed with acrylic acid, PEG and water were used as coating solution. The coating process of granular urea was conducted in fluid bed spray coater. The influence of bed temperature, and concentration of starch on properties of coated urea product was investigated. Microscopic analysis by SEM shows the formation of a thin layer on the surface of coated urea product that has a different morphology, more compact, and any irregularities of the crystal. The dissolution rate of the product decraesed with increasing concentration of starch and decreasing bed temperature. The percent coating of the product increased with increasing concentration of starch and decreasing bed temperature. The dustiness of the product increased with increasing starch concentration and bed temperature.
|Uncontrolled Keywords:||Keywords : acrylic, coating, fluid bed, starch, urea|
|Subjects:||T Technology > TP Chemical technology|
|Divisions:||Faculty of Engineering > Department of Chemical Engineering|
Faculty of Engineering > Department of Chemical Engineering
|Deposited By:||teknik kimia|
|Deposited On:||01 Nov 2012 15:20|
|Last Modified:||02 Nov 2012 08:15|
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