Email this article PROPERTIES AND NUTRITION RELEASE RATE IN THE SOIL OF SLOW-RELEASE POTASSIUM FERTILIZER VIA POLYMER COATING LAYER
About this article
Received: 12/08/19 Revised: 28/11/19 Published: 29/11/19Authors
Tran Quoc Toan
, University of Education – TNU
Abstract
A slow-release potash fertilizer was prepared by coating polyacrylamitde onto granular potash fertilizer, which could minimize nutrient loss. Granular potash has been synthesized from conventional K2SO4, bentonite and polyacrylamitde. The structure and nutrient release characteristics of it via polyacrylamide coating layer were investigated by FTIR, TGA and EDX. The results revealed that the sample with mass ratio of K2SO4 : bentonit : polyacrylamitde of 80:20:0,25, coating layer of about 1% of polyacrylamitde released 81,25% potash in soil, in 7 weeks. The kinetic study showed that the potash release rate from the granular slow-release potash fertilizers could be represented by pseudo-first-order equation at 250C with R2 ~1.
Keywords
Full Text:
PDF (Tiếng Việt)References
[1]. Trenkel M.E, Slow-and Controlled - release and Stabilized Fertilisers: An Option for Enhancing Nutrient Use Efficiency in Agriculture. International Fertilizer Industry Association, Paris, 2010.
[2]. Hai-lianWang, Ya-fanBi, HaoXia,Hui-xingXie, MoWang, Wang-wangLi, “Study on Preparation of Sustained-Release Potassium Fertilizer with Bentonite as Carrier and Slow Release Performance of Potassium”, 2013 Third International Conference on Intelligent System Design and Engineering Applications, pp.1348-1351, 2013.
[3]. Yanle Guo, Zhiguang Liu, Min Zhang, Xiaofei Tian, Jianqiu Chen, and Lingli Sun, ”Synthesis and Application of Urea-Formaldehyde for Manufacturing a Controlled-Release Potassium Fertilizer”, Ind. Eng. Chem. Res., 57 (5), pp. 1593–1606, 2018.
[4]. Ch. V . Subbarao, G . Kartheek, and D. Sirisha, “Slow Release of Potash Fertilizer Through Polymer Coating”, International Journal of Applied Science and Engineering, 11(1), pp. 25-30, 2013.
[5]. Lan Wu, Mingzhu Liu, “ Slow-Release Potassium Silicate Fertilizer with the Function of Superabsorbent and Water Retention”, Ind. Eng. Chem. Res.,46 (20), pp. 6494–6500, 2007.
[6]. Trần Quốc Toàn, Nguyễn Thanh Tùng, Nguyễn Trung Đức, Phạm Thị Thu Hà, “Tốc độ nhả nitơ của phân bón ure nhả chậm trong môi trường đất”, Tạp chí Phân tích Hóa, Lý và Sinh học, 23(3), tr. 41-47, 2018.
[7]. Trần Quốc Toàn, Chế tạo và nghiên cứu động học quá trình nhả chất dinh dưỡng của một số loại phân bón nhả chậm, Luận án Tiến sĩ Hóa học, Học viện KH&CN, Viện Hàn lâm KH&CN Việt Nam, 2017.
[8]. N.K.Brar, D.S.Benipal and B.S.Brar, ‘‘Potassium Release Kinetics in Soils of a Long –Term Fertilizer Experiment”, Indian Journal of Ecology, 35(1), pp. 9-15, 2008.
[9]. Shaviv, A.; Raban, S.; Zaidel, E, ‘‘Modeling Controlled Nutrient Release from a Population of Polymer Coated Fertilizers: Statistically Based Model for Diffusion Release”, Environ. Sci. Technol, 37, pp. 2257–2261, 2003.
[10]. Trần Quốc Toàn, Ma Thị Bích Vân, Hoàng Việt Duy, Hoàng Như Ngọc, ‘‘Ảnh hưởng của chất phụ gia tới độ bền và động thái nhả dinh dưỡng của phân bón kali nhả chậm dạng viên”, Tạp chí Khoa học và Công nghệ , Đại học Thái Nguyên, 185(09), tr. 199-204, 2018.
[11]. Marcus J. Caulfield, Greg G. Qiao, and David H. Solomon, “Some Aspects of the Properties and Degradation of Polyacrylamides”, Chem. Rev., 102, pp. 3067−3083, 2002.Refbacks
- There are currently no refbacks.