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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Teknologi Industri Pertanian Reaktor Jurnal Sains Materi Indonesia Jurnal Matematika & Sains Program Kreativitas Mahasiswa - Penelitian Majalah Kulit, Karet, dan Plastik Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat JOURNAL ONLINE OF PHYSICS PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Jurnal Riset Fisika Indonesia Jurnal Ilmu Kehutanan
Mersi Kurniati
Department Of Physics, Institut Pertanian Bogor
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Physics Other

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Journal : Reaktor

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The Effect of Variation of Raw Material Ratio on Hydrogel Based on K-Carrageean - Acrylamide as a Carrier of Ammonium Nitrate Fertilizer Hendrawan Laksono; Mersi Kurniati; Yessie Widya Sari; Christina Winarti
Reaktor Volume 21 No. 3 September 2021
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.328 KB) | DOI: 10.14710/reaktor.21.3.103-108

Abstract

Hydrogels based on natural polymers such as carrageenan are currently being developed to improve efficiency in agriculture. By enriching hydrogels with fertilizers, they will be released slowly into the soil. Enrichment of fertilizers on carrageenan-based hydrogels was carried out and analyzed with the response of swelling ability, gel fraction value of grafting degree, to the hydrogel's ability to release the fertilizer trapped in it. Carrageenan is used because its use as a natural polymer has not been widely explored, especially in the non-food sector. The results showed that the average swelling value of carrageenan-based hydrogel to ammonium nitrate solution ranged from 750.00% - 1,633.33%. The gel fraction values obtained ranged from 74.06% to 87.51%, and the degree of grafting ranged from 85.33% to 93.59%. These values indicate a relatively high degree of tissue density and grafting of acrylamide monomer on carrageenan, which means that the carrageenan:AAm based hydrogel has strong mechanical properties. The ability to release ammonium nitrate samples from the hydrogel carrageenan-based has a value ranging from 8.86% to 44.92% in five days of observation. Interpretation of the test results, the best ratio of carrageenan:AAm is 1:1, due to its relatively low release value but still has good swelling and mechanical properties.Keywords: Hydrogel; Carrageenan; Acrilamyde; Fertilizer release
The Release of Fertilizer on Corncob Cellulose – Based Acid-Acrylamide Hydrogel Prepared by Chemical Cross-Binding Method Renda Amalia Anggraini; Mersi Kurniati; Christina Winarti; Irmansyah Irmansyah
Reaktor Volume 21 No. 3 September 2021
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (607.039 KB) | DOI: 10.14710/reaktor.21.3.109-115

Abstract

Farmers' knowledge of the amount and dosage of fertilizers recommended for a practical fertilization system is low. As the result, the plant does not fully absorb the given fertilizer. Some fertilizers are leached by the flowing water and wasted into the soil layer. In long term basis, this practice can cause environmental pollution, especially on the land, water and air. Due to this fertilization problem in agriculture practice, a material with a high-water absorption capacity, which further releases it together with the fertilizer over a desirable period of time, is needed. One way to effectively provide water and nutrients to the plants and improve the physical and chemical properties of the fertilizzer is by the application of hydrogel. In this work, the release of urea fertilizer in a hydrogel-based on corncob cellulose was prepared using N, N'-Methylene Bis-acrylamide (MBA) as a crosslinker was studied. This research aims to produce a hydrogel with good physical and mechanical properties using acrylamide based on corn cobs cellulose and can be applied as a fertilizer carrier matrix whose structure can regulate fertilizer release. The treatments tested were MBA concentrations of 0%, 1%, and 2%, while the ratio of cellulose: solvent was 1: 2 and the addition of urea fertilizer with a concentration of 5%. The results showed that the swelling value increased with increasing acrylamide in the treatment ratio of the concentration of cellulose: acrylamide-acrylamide (NS: AAm). Fertilizer factors also gave a good swelling value. This shows that the addition of fertilizers gives maximum results. The hydrogel with the best treatment, namely the concentration ratio of 1% MBA, produced a swelling value of 7633.3%, a gel fraction of 76.51%, 1.73 miligram fertilizer loading, fertilizer release by 2.9%, a hardness of 7,865 N, with the morphology showing urea crystals in the form of white spots and showing the results of a slow but optimum release rate of fertilizer so that it can be applied for agriculture that requires a lot of nutrients at the beginning of growth.Keywords: corncorb; cellulose; hydrogel; N’,N’-Methylene Bis-acrylamide (MBA), slow released fertilizer
Co-Authors . Masitoh . Mursyidah Abu Sonip Ade Irma Akhiruddin Maddu Akhrudin Maddu Ana Fitriana Arifianto, Muhammad Lutfi Christina Winarti Christina Winarti Christina Winarti Eni Septi Wahyuni Erni Apriliana Erni Aprilina Esti Prihatini Fitrah Hadi Firdaus Fitrah Hadi Firdaus Hendrawan Laksono Horasdia Saragih Indah Puspita Irlian Nurmaniah Irmansyah Irmansyah Irzaman, Irzaman Istie Rahayu Jumardin Jumardin Leni Ariyanti LISDAR I. SUDIRMAN Lusia Anita Boru Sagala Lusia Anita Br. Sagala Made Dirgantara Maya Risanti Maya Risanti Miko Saputra Moehamad Barmawi Muhammad Khalid Muhammad Lutfi Arifianto Mujamilah Mujamilah Napthaleni , Pepen Arifin Purwantiningsih Sugita Puspitasari, Santi Rahmaniah Nalwi Renda Amalia Anggraini Santi Puspitasari Siti Nikmatin Sonny Affandi Sudaryanto Sudaryanto Tuti Wukirsari Yessie Widya Sari