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All Journal JURNAL KIMIA SAINS DAN APLIKASI Indonesian Journal of Pharmaceutical Science and Technology Indonesian Journal of Pure and Applied Chemistry Klinikal Sains (Jurnal Analis Kesehatan) Ensiklopedia of Journal Menara Ilmu Human Care Journal Abdimasku : Jurnal Pengabdian Masyarakat Jurnal Mata Optik Jurnal Hasi Penelitian Dan Pengkajian Ilmiah Eksakta - JPPIE Indonesian Journal of Community Empowerment and Service Jurnal Katalisator JIKA Indonesian Journal of Pharmaceutical Research Jurnal Sains Farmasi dan Kesehatan Rafflesia Journal of Natural and Applied Sciences (RJNAS)
Mega Elfia
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Workshop Lilin Aromaterapi Sebagai Repellent dari Minyak Atsiri Daun Cengkeh dan Sereh di SMA Negeri 02 Kota Bengkulu Wulandari, Septi; Gustian, Irfan; Oktarini, Dwita; Rahmawati, Reza; Elfia, Mega; Hardiansyah, Yopan; Setianingrum, Siti Ilsah; Nurdiana, Nurdiana; Triananda, Juwita; Kurniawan, Affifa Fitri
ABDIMASKU : JURNAL PENGABDIAN MASYARAKAT Vol 9, No 1 (2026): JANUARI 2026
Publisher : LPPM UNIVERSITAS DIAN NUSWANTORO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62411/ja.v9i1.3161

Abstract

Tujuan workshop ini untuk meningkatkan pengetahuan dan soft skill para siswa/I mengenai manfaat penggunaan bahan alam yaitu minyak atsiri sebagai bahan aktif repellent dalam lilin aromaterapi  dan mengarahkan perilaku dan pola pikir ekonomi produktif metode yang digunakan Adalah pemberian quisioner sebanyak 5 pertanyaan sebelum workshop dilakukan lalu melakukan post-test seletahnya. Hasil yang didapat pada workshop ini Adalah terjadi peningkatan pemahaman siswa/siswi mengenai pemakaian minyak atsiri sebagai repellent. Semua pertanyakan yang diajukan pada saat post-test sudah terjawab lebih dari 80%. Juga membuka pola pikir siswa/siswi mengenai produk ekonomi produktif berupa hampers wisuda dengan berbagai kemasan.
Synthesis of a Slow-Release Fertilizer Composite Based on Microcrystalline Cellulose from Coconut Husk Waste Andini, Vicka; Dwiwibangga, Yoravika; Safniyeti, Safniyeti; Az Zahra, Nasywa; Anis, Ulfah; Elfia, Mega
Jurnal Kimia Sains dan Aplikasi Vol 29, No 2 (2026): Volume 29 Issue 2 Year 2026
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.29.2.149-160

Abstract

This study reports the synthesis and evaluation of a biodegradable slow-release fertilizer based on microcrystalline cellulose (MCC) extracted from coconut husk waste from Seluma Regency, Bengkulu Province. MCC was prepared through sequential acid washing, alkaline delignification, bleaching, and acid hydrolysis. A composite fertilizer was synthesized by incorporating maleate-containing polymer segments into MCC through limited radical grafting and/or esterification, followed by incorporation of polydihydroxymethylurea potassium phosphate (PDMU–KP) using citric acid as an interaction agent. Fourier transform infrared (FTIR) analysis indicates the presence of carbonyl, amide, and phosphate-related functional groups associated with the composite structure. Scanning electron microscopy (SEM) revealed a dense and agglomerated composite morphology with a rough, layered surface and crystalline aggregates, while energy-dispersive X-ray (EDX) analysis verified the presence of C, N, O, P, and K elements within the copolymer matrix. X-ray diffraction (XRD) analysis showed a reduction in cellulose crystallinity after copolymerization, indicating the formation of a polymer composite. Nutrient release tests conducted in distilled water for 28 days demonstrated controlled and differential release behavior governed by polymer swelling and matrix relaxation processes. Phosphate exhibited a maximum release concentration of 0.398 mg/L on day 7, followed by a gradual decrease to 0.058 mg/L by day 28. In contrast, nitrogen release occurred more gradually, reaching a maximum concentration of approximately 3.08 mg/L on day 14 before declining at later stages. These results indicate that the MCC-g-PMA/PDMU–KP copolymer provides sustained nutrient release with distinct release maxima for phosphorus and nitrogen, highlighting its potential as a cellulose-based slow-release fertilizer designed to improve nutrient use efficiency and reduce nutrient losses, derived from locally available coconut husk waste.
Co-Authors Aidil Onasis Alfin Surya Alvia Wesnita Alwa Pascaselnofra Amril Amril, Alwa Pascaselnofra Andini, Vicka Anis, Ulfah Asdim Asdim Astuti Sari, Winda Aulia Febriani Aulia, Nissa Az zahra, Nasywa Billy Harnaldo Putra, Dini Fatmi, Budi Setiawan Buololo, Nadia Buololo Nirmala Dwi, Freshka Aulia Eduwin Saputra Eli Yusrita Elti Fitriani Etriyanto Arman Fatma Fatma Gusriyani, Sri Hardiansyah, Yopan Harni Sepriyani Harni Sepriyani Harni Sepryani Harry Ade Saputra Hikmawati Hikmawati Irfan Gustian Kurniawan, Affifa Fitri Lusiana Lusiana Manisha Tri Cahyani Mentari Dwi Anggraini Nadya Br Debora Nailatul Fadhilah Nurdiana Nurdiana Oktarini, Dwita Oktiarni, ⁠Dwita Putri, Rahayu Nadia Rafa, Huda Nur Rahmawati, Reza Resti wulandari Resti Wulandari Rio Dwi Andika Rosa Devitria Rosa Devitria Roza Devitria Safniyeti Safniyeti, Safniyeti Sarwis, Ynisa Yulan Sepriyani, Harni SEPTI WULANDARI Setianingrum, Siti Ilsah Sidoretno, Wahyu Margi Tri Danang Kurniawan Triananda, Juwita Vicka Andini Wesnita, Alvia Wibowo, Yudhistira Panca Wulandari Ginting, Vina Juni Yoravika Dwiwibangga Yulia Yesti Yulia Yesti, Yulia Yusrita, Eli