Usage Of Zeolite And Chitosan Composites As Slow Release Fertilizer

Abstract

The research with the title usage of zeolite and chitosan composites as slow release fertilizer had been done. In this research, fertilizer was made by mixing zeolite with NaNO 3 as a source of macro nutrients (nitrogen) and chitosan as a crosslinks which will later be used to provide slow release function in fertilizers. The slow release fertilizer was made by impregnating zeolite on NaNO 3 and chitosan solution. Initial characterization of slow release fertilizer functional groups was identified using FTIR instruments. The results of the characterization of slow-release fertilizer functional group are known to have shifted the zeolite characteristic peaks namely Si-O and Al-O groups which indicate the presence of Nitrogen got into the fertilizer. Nitrogen release rates were identified by UV-VIS spectrophotometer. The slowest Nitrogen release rate is zeolite-chitosan fertilizer with the ratio of zeolite and chitosan is 1:1 (%w/w), while the fastest Nitrogen release produced by zeolite fertilizer.

Slow-release Fertilizer Application on Silk (Falcataria moluccana Miq.) and Rice (Oryza sativa L.) Plant Growth and Yield in Agroforestry System

“…Ranking as the second most bioavailable natural fiber following cellulose, CS possesses non-toxic and biodegradable characteristics, ensuring its safe utilization (Sharif et al 2018). Some research results related to CS-SRF in plants indicate slow-release properties, the ability to absorb water, maintain soil moisture, and increase crop production (Handayani 2014;Essawy et al 2016;Nayan et al 2018;Maharani et al 2018;Istiani et al 2020;Pimsen et al 2021;Eddarai et al 2022). CS-SRF experiments on sengon and rice planted with different planting patterns must be carried out to identify the highest plant growth.…”

Pembuatan Zeolit Termodifikasi Heksadesiltrimetilamonium (Hdtma) Untuk Aplikasi Pupuk N Slow Release

“…Sifat pertukaran kation zeolit alam dapat ditingkatkan dengan memodifikasi permukaan secara kimia menggunakan senyawa, terutama anion [9] dan organik non-polar [10]. Salah satu senyawa yang digunakan yaitu amina kuaterner hexadecyltrimethylammonium (HDTMA) adalah surfaktan kationik rantai panjang yang memiliki muatan positif permanen .…”

Modifikasi Pupuk Urea Pelepasan Terkendali dan Pengaruhnya terhadap Lingkungan

“…Akan tetapi, efek negatif dari nitrogen yang berlebihan adalah mencemari lingkungan karena kontaminasi nitrat dalam tanah dan air permukaan. Efek lain adalah urea dapat terhidrolisis dengan cepat menjadi amonium dan menguap menjadi amonia dan dapat menimbulkan permasalahan lingkungan dan kesehatan (Maharani & Novan, 2017;Rekowski et al, 2020). Urea dapat dengan mudah larut dalam air, hal ini yang menyebabkan sisa urea yang tidak terserap oleh tanaman bisa menyebabkan eutrofikasi ekosistem, degradasi kualitas air, menimbulkan efek rumah kaca, dan mengganggu rantai makanan dalam ekosistem (Hussain et al, 2012;Ni et al, 2011;Bortoletto-Santos et al, 2018).…”