It is very important to develop controlled-release fertilizers to ensure efficiency and environmental protection. This study aims to make a superabsorbent hydrogel-based controlled-release urea fertilizer. Superabsorbent hydrogels were prepared from the cellulose of corn cobs cross-linking with epichlorohydrin, and then an amount of urea as a fertilizer was stored inside the hydrogels (GEL-A). The GEL-A functionalization with carboxy-methyl was also carried out in this study to improve the hydrophilicity of hydrogels (GEL-B). GEL-A and GEL-B were immersed in water at a certain pH and temperature range and the urea concentration released from the hydrogels was monitored by a spectrophotometer. The results showed that the urea released by GEL-A and GEL-B was not much different. Respectively, the urea efficiency of GEL-A and GEL-Bwas around 5.29% and 5.56% for 180 min. The urea released from both hydrogels was not significantly affected by changes in the temperature of the solution. Urea release was influenced by pH, and the rate of urea release of GEL-B was faster than GEL-A, so pH control was needed in the application of this slow-release fertilizer.
| Published by | Universitas Gadjah Mada |
| Journal Name | Indonesian Journal of Chemistry |
| Contact Phone | - |
| Contact Name | - |
| Contact Email | - |
| Location | Kab. sleman, Daerah istimewa yogyakarta INDONESIA |
| Website | ijc| https://journal.ugm.ac.id/index.php/ijc| |
| ISSN | ISSN : 14119420, EISSN : 24601578, DOI : -, |
| Core Subject | Science, Engineering, |
| Meta Subject | Chemical Engineering, Chemistry & Bioengineering, Chemistry, |
| Meta Desc | Indonesian Journal of Chemistry is an International, peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry including applied chemistry. The journal is accredited by The Ministry of Research, Technology and Higher Education (RISTEKDIKTI) No : 21/E/KPT/2018 (in First Rank) and indexed in Scopus since 2012. Since 2018 (Volume 18), Indonesian Journal of Chemistry publish four issues (numbers) annually (February, May, August and November). |
| Penulis | Muharam, Salih , Fitri, Afria , Yuningsih, Lela Mukmilah , Putri, Yulia Mariana Tessa Ayudia , Rahmawati, Isnaini |
| Publisher Article | Universitas Gadjah Mada |
| Subtitle Article | Indonesian Journal of Chemistry ARTICLE IN PRESS |
| Scholar Google | http://scholar.google.com/scholar?q=%2Bintitle%3A&… |
| View Article | https://journal.ugm.ac.id/ijc/… |
| DOI | https://doi.org/10.22146/ijc.44230 |
| DOI Number | DOI: 10.22146/ijc.44230 |
| Download Article [1] | https://journal.ugm.ac.id/ijc/article/do… |
| Download Article [2] | http://download.garuda.ristekdikti.go.id… |
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