Surface Coated Urea with Bio-Degradable Materials Using a Fluidized Bed

Document Type : Research Article

Authors

School of Chemical Engineering, Iran University of Science and Technology (IUST), P.O. Box 16765-163 Tehran, I.R. IRAN

Abstract

Due to the high solubility rate of urea in water, a noticeable portion of this fertilizer migrates into the underneath layers of soil and will be out of access of plants. This leakage not only is non-economic but also is dangerous for the environment. To avoid this leakage, different methods have been used which one of more applicable methods is the coating of the urea for controlling its solubility rate in the water. In this paper, xanthan gum and alginate powder were used as coating materials for urea pellets and the effects of these coatings on the releasing rate of urea was investigated. Single and double layer coatings were produced in a gas-solid-liquid fluidize bed. The best result has been obtained from the two-layer coating of xanthan gum and alginate. The results showed that this coating increases the urea release time up to 12 days.

Keywords

Main Subjects

References

[1] Thanh H. Trinh, KuZilati KuShaari, Abdul Basit, Modeling the Release of Nitrogen from Controlled-Release Fertilizer with Imperfect Coating in Soils and Water, Ind. Eng. Chem. Res. 54: 6724−6733 (2015).
[2] کورش اخلاقی، "فرمولاسیون و ساخت سیلنت مناسب جهت استفاده در فرایند تولید کود اوره با پوشش گوگردی"، اولین کنفرانس پتروشیمی ایران، (1387).
[3] Yue-chao Yang, Min Zhang, Yuncong Li, Xiao-hui Fan, and Yu-qing Geng, Improving  the Quality of Polymer-Coated Urea with Recycled Plastic, Proper Additives, and Large Tablet, J. Agric. Food Chem. 60: 11229−11237 (2012).
[4] M.E.Trenkel, “Slow- and Controlled-Release and Stabilized Fertilizers: An Option for Enhancing Nutrient Use Efficiency in Agriculture”, International Fertilizer Industry Association (IFA), Paris, France, 17-22 (2010)
[5] Farahnaz Eghbali Babadia et al, New Coating Formulation for the Slow Release of Urea Using a Mixture of Gypsum and Dolomitic Limestone, Partiuology, 34: 62-67 (2014).
[6] Rui Lan, Yonghui Liu, Guanda Wang, Tingjie Wang, Chengyou Kan, Yong Jin, Experimental Modeling of Polymer Latex Spray Coating for Producing Controlled-Release Urea, Particuology, 9: 510– 516 (2011).
[7] Azeem B., KuShaari K, Zakaria B. Man, Abdul Basit, Trinh H. Thanh, Review on Materials & Methods to Produce Controlled Release Coated Urea Fertilizer, Journal of Controlled Release. 181: 11–21 (2014).
[8] Tsai B.S., “Continuous Spouted Bed Process for Sulphur-Coating Urea”, University of British Colombia, Canada, (1986).
[9] Ayub G., Rocha S., Perrucci A., Analysis of the Surface Quality of Sulphur-Coated Ureaparticles in a Two-Dimensional Spouted Bed, Braz. J. Chem. Eng., 18(1): 13–22 (2001).
[10] Wu S., et al., Synthesis and Performance of Polyurethane Coated Urea as Slow/Controlled Release Fertilizer, J. Wuhan Univ. Technol. Mater. Sci. Ed., 27(1): 126–129 (2012).
[11] Guo M., et al., Preparation and Properties of a Slow-Releasemembrane-Encapsulated Urea Fertilizer with Superabsorbent and Moisture Preservation, Ind. Eng. Chem. Res., 44(12): 4206–4211 (2005).
[12]  Liang R., Liu M., Wu L., Controlled Release NPK Compound Fertilizer with the Function of Water Retention, React. Funct. Polym., 67(9): 769–779 (2007).
[13] Liang R., Liu M., Preparation and Properties of a Double-Coated Slow-Release and Water-Retention Urea Fertilizer, J. Agric. Food Chem., 54: (4) 1392–1398 (2006).
[14] Ni B., et al., Environmentally Friendly Slow-Release Nitrogen Fertilizer, J. Agric. Food Chem., 59(18): 10169–10175 (2011).
[15] Tao S., et al., Preparation and Characterization of Triple Polymer‐Coated Controlledrelease Urea with Water‐Retention Property and Enhanced Durability, J. Appl. Polym. Sci. 120(4): 2103–2111 (2011).
[16] Ito R., Golman B., Shinohara K., Design of Multi-Layer Coated Particles with Sigmoidal Release Pattern, Chem. Eng. Sci. 60(20): 5415–5424 (2005).
[17]  Suherman, Producing Slow Release Urea by Coating with Starch/Acrylic Acid in Fluid Bed Spraying, Int. J. Eng. Technol. IJET-IJENS. 11(06): 4 (2011).
[18]  Riyajan S.-A., Sasithornsonti Y., Phinyocheep P., Green Natural Rubber-g-Modified Starch
for Controlling Urea Release, Carbohydr. Polym., 89(1): 251–258 (2012).
[19]  Mulder W.J, Gosselink R.J.A, Vingerhoeds M.H., Harmsen P.F.H., Eastham D., Lignin Based Controlled Release Coatings, Ind. Crop. Prod., 34(1): 915-920 (2011).
Nashrieh Shimi va Mohandesi Shimi Iran
Volume 37, Issue 3 - Serial Number 89
October 2018
Pages 119-126

Files

Share

How to cite

Statistics