Advances in Controlled Release Fertilizers. High Performance Polymers and Composites. Kroschwitz, F.I., LV Mc Adams, and JA Gannon. Nutrient-impregnated Charcoal: Environmentally friendly Slow Release Fertilizer. Comersial Fertilizer Thier Sources and Use, 5thedition. Chemical Engineering Journal, Vol 155(3): 892-898.Ĭollings, G.H. Multifunctional Sow Release Urea Fertilizer From Ethylcellulose and Superabsorbent Coated Formulations. Jakarta : EGC.īoli, Ni, Mingzhu, L, Shaoyu, L.
Buku Ajar Vogel: Kimia Analisis Kuantitatif Anorganik. Pusat Penelitian dan Pengembangan Teknologi Mineral dan Batubara.īasset, J., et al. Buku pedoman ini menggaris bawahi praktek untuk pengelolaan sianida dari sudut pandang pengelolaan risiko dan memberikan sejumlah studi kasus yang menyoroti strategi yang saat ini sedang digunakan oleh industri pertambangan Australia. Pembuatan Pupuk Kieserite Dari Dolomit Gresik. As result, polyacrylamide-kieserit-cellulose can be developed as slow release fertilizer to increase fertilizer using efficiency and to avoid excessive water and ground contaminationĪgung, Budhy. Release profile of urea from composite is slower than the urea granules or tablets. The adsorption of urea by composite is 2.3115 g urea/g composite. Testing adsorption and desorption performed on the composite of the best(of 2 g kieserite, 0,15 g cellulose, and kieserite mesh -60 +80). Result of variations in kieserite shows that the addition up to 3 grams kieserit mass causes an increasing in the swelling and porosity.Addition of cellulose increased the swelling power of composite but it lowers the porosity of the composite.
Adsorption and desorptionpower of composite was determined by UV-Vis spectrophotometer with Nessler method. Setelah Vogel meninggal, revisi lebih lanjut dibuat oleh berbagai penulis baru. Functional cluster and bond was investigated by FTIR (Fourier Transform Infra Red). Buku karya Vogel termasuk: 7 Buku Teks Analisis Kimia Kualitatif (1937) Buku Teks Analisis Kimia Kuantitatif (1939) Kimia Organik Praktis (1948) Karya-karyanya telah direvisi dan diterjemahkan dalam berbagai edisi bahasa. The compositequality as slow release agent is measured by characterizationanalysisincluding porosity, swelling power, adsorption of urea, and urea released profile from composite compared to urea granules and tablets.
Therefore, the aim of this study was to develop slow release fertilizer using urea fertilizer and kieserite in polyacrylamide-cellulose composite.Composite preparation was carried out by two variables that are kieserite mass variation and cellulose mass variation. The spread of contamination to ground water and surface water from excessive fertilizer become major concern.
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