Preparation of Porous Carbon from Coffee Ground Waste as Matrix of Urea Slow Release Fertilizer

Diana Diana, Nur Indah Fajar Mukti, Fakhri Fachreza, Irfansyah Irfansyah


Urea is one of the fertilizers that are widely used in agriculture. However, the absorption efficiency of urea for plants is currently only around 30%. Therefore, to increase its absorption in plants it is necessary to control the release of urea by making it a Slow Release Fertilizer (SRF) fertilizer. The use of SRF is expected to control the release of nutrients according to the time and amount needed by plants. Natural material which has the potential as a matrix of SRF fertilizer is coffee grounds waste. This research produces carbon from coffee pulp waste which can be used as a matrix in the manufacture of urea SRF fertilizer. With the addition of a matrix of coffee carbon is expected to slow the rate of release of urea into nature. So that the process of absorption of urea into plants will be more leverage. Coffee pulp was pyrolysed with pyrolysis temperature variation (400 - 600oC) using ZnCl2 as activator. The iodine number value of coffee grounds carbon produced decreases with increasing temperature. The addition of carbon coffee grounds can inhibit the release of urea from 81.5% to 26% for 30 days.


karbon berpori, ampas kopi, slow release fertilizer


Alemi, H., Kianmehr, M.H., Borghaee, A.M., 2010, “Effect of Pellet Processing of Fertilizer on Slow-Release Nitrigen in Soil, Asian Journal of Plant Sciences.;

Altenor S1, Carene B, Emmanuel E, Lambert J, Ehrhardt JJ, Gaspard S., 2009 “Adsorption Studies of Methylene Blue and Phenol onto Retriever Roots Activated Carbon Prepared by Chemical Activation”. Journal of Hazardous Material, Vol. 165, pp.1029-1039.;

Alves, R.C., Oliveira, M.B.P.P., Casal, S., 2011. Coffee authenticity. In: Oliveira, M.B.P.P., Mafra, I., Amaral, J.S. (Eds.), Current Topics on Food Authentication. Transworld Research Network, Kerala, India.;

Azeem, B., K. KuShaari, Z.B. Man, A. Basit., and T.H Thanh., 2014, “Review on Materials & Methods to Produce Controlled Release Coated Urea Fertilizer”, Journal of Controlled Release, Vol. 181, pp. 11 – 21.;

Dobermann, A and Thomas Fairhurst., 2000, “Nutrient Disorder & Nutrient Managemen”, 1st ed., PPIC Canada.;

Escobar, R.F., Benloch, M., Herrera, E., Gracia-Novelo,J.M., 2003, “Effect of Traditional and Slow-Release N Fertilizer on Growth of Olive Nursery Plants and N Losses by Leaching”. Scientia Horticulturae ed. 101, 39-49.;

Fawzi Banat, Sameer Al-Asheh, Leema Al-Makhadmeh, 2003, “Evaluation of the use of raw and activated date pits as potential adsorbents for dye containing waters”, Process Biochemistry, Vol. 39, Issue 2, pp. 193-202.;

Ferrão, J.E.M., 2009. O Café, A Bebida Negra Dos Sonhos Claros. Chaves Ferreira- Publicações S. A, Lisboa, Portugal.;

Guo, J. and Lua, 2003, “A.C.: Surface functional groups on oil-palm-shell adsorption prepared by H3PO4 and KOH activation and their effects on adsorptive capacity”. J. Trans IChemE, 81, pp. 585-590.;

Hardjowigeno, S, 2003, “Ilmu Tanah”, Akademika Presindo, Jakarta. ;

Hariyati, N., 2015, “Pengujian Pupuk Slow Release Urea Media Abu Terbang Bagas pada Tanah Pasir Pantai dengan Indikator Pertumbuhan Tanaman Jagung (Zea mays L.)” Fakultas Pertanian Universitas Gadjah Mada.;

Kobya, Mehmet & Demirbas, Prof. Erhan & Senturk, E & Ince, M., 2005, “Adsorption of Heavy Metal Ions from Aqueous Solution by Activated Carbon Prepared from Apricot Stone”, Bioresource technology, Vol. 96, pp. 1518-21.;

Lan W., Mingzhu L., Rui L., 2007, “Preparation and Properties of a Double Coated Slow Release NPK Compound Fertilizer with Superabsorbent and Water Retention”. Biosecure Technology, p.1.

Lixiang, Y., N. Xiaoyu, W. Lin, W. Zhengyan, W. Yuejin, Zhanghong, C. Dongqing, and Q. Guannan, 2011, “Built – in Screen Type Controlled – Release Urea as well as Production Method and Application Thereof”, Chinese Patent Specification CN 102173962 A.



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