{"title":"Bahasa Indonesia","authors":"H. Kusuma, A. A. Putra, P. Suarya","doi":"10.24843/jchem.2023.v17.i01.p15","DOIUrl":null,"url":null,"abstract":"ABSTRAK \n \nNitrogen memiliki peranan utama dalam proses pertumbuhan tanaman. Namun, keberadaan dan ketersediaan nitrogen di dalam tanah terbatas, karena mudah hilang dan terbawa air, sehingga menyebabkan efisiensi pemupukan nitrogen yang rendah. Peningkatan efisiensi pemupukan nitrogen dapat diupayakan melalui formulasi pupuk dalam bentuk slow release fertilizer (SRF) dan pemberian unsur nitrogen dalam jumlah yang banyak. Tujuan dari penelitian ini adalah untuk mengetahui pola pelepasan nitrogen total dalam tanah setelah terikat pada bentonit teraktivasi asam yang terlapisi amonium nitrat. Pada pembuatan SRF, pelapisan amonium nitrat pada bentonit teraktivasi dilakukan dengan perbandingan massa (gram) 20:20. Penentuan kadar nitrogen total dilaksanakan menggunakan metode Kjeldahl. Hasilnya menunjukkan bahwa SRF 20 memiliki kandungan nitrogen total tertinggi sebesar 0,77%. Karakterisasi SRF 20 menggunakan FTIR mengindikasikan adanya amonium nitrat yang terikat pada SRF 20. Gugus fungsi yang menyatakan adanya ikatan amonium nitrat pada SRF 20 adalah C-O dan N-H. Untuk pengulangan 1, 2, dan 3 selama 7 hari leaching, nitrogen total yang terlepas masing-masing sebanyak 0,0051; 0,0075; dan 0,0067 gram dengan sisa nitrogen 0,61; 0,60; dan 0,60 gram. Hal ini membuktikan bahwa nitrogen berhasil terperangkap dalam permukaan maupun struktur pori-pori adsorben, yaitu bentonit teraktivasi. \n \nKata kunci: amonium nitrat-bentonit teraktivasi, pelepasan nitrogen, Slow Release Fertilizer \n \n \nABSTRACT \n \nNitrogen has a major role in the process of plant growth. Unfortunately, the presence and availability of nitrogen in the soil are limited because nitrogen is easily lost and carried away by water causing low nitrogen fertilization efficiency. Increasing the efficiency of nitrogen fertilization can be pursued through the formulation of fertilizer in the form of Slow Release Fertilizer (SRF) and the application of nitrogen in large quantities. The purpose of this study was to determine the total nitrogen release pattern in the soil after being bound to acid-activated bentonite coated with ammonium nitrate. In the preparation of the SRF, the activated bentonite was coated by ammonium nitrate with a mass ratio (grams) of 20:20. The tests for determining the total nitrogen content were done using Kjeldahl method. The results showed that SRF 20 had the highest total nitrogen content of 0.77%. The characterization of SRF 20 using FTIR revealed that the ammonium nitrate bound to the SRF 20. The functional groups indicating the presence of ammonium nitrate in the SRF 20 were C-O and N-H. In repetitions 1, 2, and 3 for 7 days of leaching, the total nitrogen released was 0.0051; 0.0075; and 0.0067 grams, with nitrogen remaining 0.61; 0.60; and 0.60 grams, respectively. This proved that nitrogen was successfully trapped in the surface and pore structure of the adsorbent, activated bentonite. \n \nKeywords: ammonium nitrate-bentonite, nitrogen release, Slow Release Fertilizer","PeriodicalId":17780,"journal":{"name":"Jurnal Kimia","volume":"45 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Jurnal Kimia","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.24843/jchem.2023.v17.i01.p15","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
ABSTRAK
Nitrogen memiliki peranan utama dalam proses pertumbuhan tanaman. Namun, keberadaan dan ketersediaan nitrogen di dalam tanah terbatas, karena mudah hilang dan terbawa air, sehingga menyebabkan efisiensi pemupukan nitrogen yang rendah. Peningkatan efisiensi pemupukan nitrogen dapat diupayakan melalui formulasi pupuk dalam bentuk slow release fertilizer (SRF) dan pemberian unsur nitrogen dalam jumlah yang banyak. Tujuan dari penelitian ini adalah untuk mengetahui pola pelepasan nitrogen total dalam tanah setelah terikat pada bentonit teraktivasi asam yang terlapisi amonium nitrat. Pada pembuatan SRF, pelapisan amonium nitrat pada bentonit teraktivasi dilakukan dengan perbandingan massa (gram) 20:20. Penentuan kadar nitrogen total dilaksanakan menggunakan metode Kjeldahl. Hasilnya menunjukkan bahwa SRF 20 memiliki kandungan nitrogen total tertinggi sebesar 0,77%. Karakterisasi SRF 20 menggunakan FTIR mengindikasikan adanya amonium nitrat yang terikat pada SRF 20. Gugus fungsi yang menyatakan adanya ikatan amonium nitrat pada SRF 20 adalah C-O dan N-H. Untuk pengulangan 1, 2, dan 3 selama 7 hari leaching, nitrogen total yang terlepas masing-masing sebanyak 0,0051; 0,0075; dan 0,0067 gram dengan sisa nitrogen 0,61; 0,60; dan 0,60 gram. Hal ini membuktikan bahwa nitrogen berhasil terperangkap dalam permukaan maupun struktur pori-pori adsorben, yaitu bentonit teraktivasi.
Kata kunci: amonium nitrat-bentonit teraktivasi, pelepasan nitrogen, Slow Release Fertilizer
ABSTRACT
Nitrogen has a major role in the process of plant growth. Unfortunately, the presence and availability of nitrogen in the soil are limited because nitrogen is easily lost and carried away by water causing low nitrogen fertilization efficiency. Increasing the efficiency of nitrogen fertilization can be pursued through the formulation of fertilizer in the form of Slow Release Fertilizer (SRF) and the application of nitrogen in large quantities. The purpose of this study was to determine the total nitrogen release pattern in the soil after being bound to acid-activated bentonite coated with ammonium nitrate. In the preparation of the SRF, the activated bentonite was coated by ammonium nitrate with a mass ratio (grams) of 20:20. The tests for determining the total nitrogen content were done using Kjeldahl method. The results showed that SRF 20 had the highest total nitrogen content of 0.77%. The characterization of SRF 20 using FTIR revealed that the ammonium nitrate bound to the SRF 20. The functional groups indicating the presence of ammonium nitrate in the SRF 20 were C-O and N-H. In repetitions 1, 2, and 3 for 7 days of leaching, the total nitrogen released was 0.0051; 0.0075; and 0.0067 grams, with nitrogen remaining 0.61; 0.60; and 0.60 grams, respectively. This proved that nitrogen was successfully trapped in the surface and pore structure of the adsorbent, activated bentonite.
Keywords: ammonium nitrate-bentonite, nitrogen release, Slow Release Fertilizer