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Effectiveness of Nanocatalyst in the Improvement of Sorghum Bagasse Particleboard Bonded with Bio-Adhesive Yunia Frida Adelka; Deni Purnomo; Sudarmanto; Narto; Bernadeta Ayu Widyaningrum; Murni Handayani; Jajang Sutiawan; Kenji Umemura; Dede Hermawan; Sukma Surya Kusumah
Jurnal Sylva Lestari Vol. 11 No. 3 (2023): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v11i3.765

Modification in the manufacturing process of bio-adhesive need to be carried out to improve the properties of sorghum bagasse particleboard, such as adding nanocatalyst into the bio-based adhesive. This study was conducted to determine the effectiveness of nanocatalyst in enhancing the properties of sorghum bagasse particleboard. Each nanocatalyst, such as zinc oxide (ZnO) and graphene oxide (GO), has been added to the citric acid and molasses-based adhesives. The target density of the particleboard was 0.8 g/cm3, with a board size of 350 mm × 350 mm × 6 mm. The particleboard was pressed using a hot-pressing machine at a temperature of 200°C and 10 MPa of pressure for 10 min. The physical and mechanical properties of the particleboard were evaluated, referring to JIS A 5908:2022 standard. The result showed that adding GO into the citric acid-based adhesive obtained a higher modulus of rupture (MOR) and lower thickness swelling (TS) than the others. Consequently, adding GO is more effective than adding ZnO into the bio-based adhesive in enhancing the properties of the particleboard. Keywords: bagasse sorghum, citric acid, molasses, Nanocatalyst GO, Nanocatalyst ZnO

KARAKTERISTIK PAPAN PARTIKEL DARI CAMPURAN LIMBAH AKASIA (Acacia mangium Willd.) DAN KULIT KELAPA MUDA (Cocos nucifera L.): Characteristics of Particle Board from Mixed Waste of Acacia (Acacia mangium Willd.) and Coconut Shell (Cocos nucifera L. Anggraini, Riana; Khabibi, Jauhar; Adelka, Yunia Frida
Jurnal Silva Tropika Vol. 5 No. 1 (2021): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jsilvtrop.v5i1.12170

The aim of this research is to make an effort to utilize forestry waste, in the form of harvesting waste of acacia (Acacia mangiumWilld.) and coconut shells (Cocos nucifera L.) into particle boards by considering the evaluation of the value of particle board characteristics, both physical and mechanical characteristics in accordance with standards JIS A 5908-2003.This study used a factorial analysis where the first factor was the composition of the raw material for acacia: coconut (100: 0, 60:40, 50:50, 40:60 and 0:100). While the second factor is the provision of pretreatment on particles (cold soak, hot soak and without immersion).This analysis was carried out in a completely randomized design (CRD) with three repetitions.The results showed that the composition of the raw materials had a significant effect on the value of water content, water absorption, modulus of rupture and modulus of elasticity.The pretreatment had a significant effect on the thickness swelling, water absorption, modulus of rupture and modulus of elasticity. Meanwhile, the interaction of these two factors has a significant effect on the internal bond value, modulus of rupture and modulus of elasticity.Based on the results, it is known that only the density parameters that meet the JIS A 5908-2003 standard, the moisture content and thickness development parameters have not met the standards, while the mechanical characteristics of the particle board have not met the standards.Overall particle board with the composition of acacia raw material: young coconut 60:40 and heat soaking pre-treatment can produce good quality particle board.

The Potential of Forestry Sector Waste for Biochar Production: Characteristics and Production Challenges Simanullang, Sumiati; Andika, Riki; Adelka, Yunia Frida; Fadia, Saviska Luqyana; Ridho, Muhammad Rasyidur
West Science Interdisciplinary Studies Vol. 3 No. 12 (2025): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v3i12.2477

Timber harvesting has long been the primary focus of forest utilization as a major economic resource, yet more efficient strategies are needed to reduce excessive logging by implementing measured harvesting and maximizing the use of all wood components. Branches, logging residues, sawmill by-products, and discarded wooden furniture remain underutilized and are often treated as waste. These materials have high potential to be converted into value-added products such as biochar. Forestry waste is particularly suitable as a feedstock for biochar due to its lignocellulosic richness. Biochar is a carbon-rich material produced through pyrolysis. Biochar derived from forestry waste has significant potential to improve soil structure and water-holding capacity, while also contributing to long-term carbon storage and climate change mitigation. However, challenges remain, including variability in biochar quality, absence of global standards, high production costs, contaminant risks, and limited formal guidelines.

Pengawet Alami Kayu Sengon dengan Ekstrak Umbi Gadung terhadap Rayap Kayu Kering: Natural Preservatives of Sengon Wood with Umbi Gadung Extract Against Drywood Termites Anggraini, Riana; Tarmadi, Didi; Ardiansyah, Ardiansyah; Ridho, Muhammad Rasyidur; Adelka, Yunia Frida; Fadia, Saviska Luqyana; Simanullang, Sumiati
Jurnal Silva Tropika Vol. 9 No. 2 (2025): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jurnalsilvatropika.v9i2.49784

ABSTRACT Sengon wood (A. chinensis) is a type of wood that has great potential as a source of industrial raw materials and holds significant economic value. However, sengon wood has low natural durability, classified as durability class IV–V, making it highly susceptible to attack by wood-destroying organisms such as termites. Therefore, wood preservation treatment is necessary to extend its service life. This study aims to analyze the interaction effect between the concentration of gadung tuber (D. hispida) extract with ethanol solvent and the soaking duration on the durability of sengon wood using the cold soaking method. The extract concentrations used were 1%, 3%, and 5%, and the soaking durations were 1 day, 2 days, and 3 days. The preserved samples were subjected to forced feeding tests using 50 healthy and active drywood termites (C. cynocephalus Light) on test specimens measuring 2.5 cm × 2.5 cm × 2 cm. The preservative performance parameters included absorption and retention, while the wood durability parameters included weight loss and termite mortality rate. The interaction between gadung tuber extract concentration and soaking duration significantly affected the retention and absorption values, while weight loss and termite mortality showed no significant effect. The highest retention and absorption values were obtained at a soaking duration of 3 days and a concentration of 5%, with average retention and absorption values of 0.028 g/cm³ and 0.438 g/cm³, respectively Keywords: drywood termites, gadung tuber extract, sengon wood, wood preservation ABSTRAK Kayu sengon (A.chinensis) merupakan kayu yang memiliki potensi sebagai penyedia bahan baku industri dan memiliki nilai ekonomi yang cukup besar. Kayu sengon memiliki tingkat keawetan yang rendah, yaitu kelas awet IV-V sehingga sangat mudah diserang oleh organisme perusak kayu seperti rayap. Perlu dilakukan proses pengawetan kayu untuk meningkatkan umur pakai kayu. Penelitian ini bertujuan untuk menganalisis pengaruh interaksi antara konsentrasi ekstrak umbi gadung (D. hipsida) dengan pelarut etanol dan lama perendaman terhadap keawetan kayu sengon dengan metode perendaman dingin. Konsentrasi ekstrak yang digunakan 1%, 3% dan 5% dan lama perendaman yang dilakukan 1 hari, 2 hari dan 3 hari. Pengawetan diumpan paksa dengan rayap kayu kering (C. cynocephalus Light) yang sehat dan aktif sebanyak 50 ekor pada contoh uji yang berukuran (2,5 cm x 2,5 cm x 2 cm). Parameter pengujian bahan pengawet terdiri dari absorbsi dan retensi, sedangkan parameter pengujian keawetan kayu terdiri dari penurunan bobot dan nilai mortalitas rayap kayu kering. Interaksi antara konsentrasi ekstrak umbi gadung dan lama perendaman terhadap keawetan kayu sengon memberikan pengaruh nyata terhadap nilai retensi dan absorbsi, sedangkan penurunan bobot dan mortalitas tidak memberikan pengaruh nyata. Interaksi retensi dan absorbsi nilai tertinggi diperoleh pada lama perendaman 3 hari dan konsentrasi 5%, dengan nilai rata-rata retensi 0,028 g/cm3 dan absorbsi 0,438 g/cm³. Katakunci: ekstrak umbi gadung, kayu sengon, pengawetan kayu, rayap kayu kering

The Potential of Forestry Sector Waste for Biochar Production: Characteristics and Production Challenges Simanullang, Sumiati; Andika, Riki; Adelka, Yunia Frida; Fadia, Saviska Luqyana; Ridho, Muhammad Rasyidur
West Science Interdisciplinary Studies Vol. 3 No. 12 (2025): West Science Interdisciplinary Studies
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/wsis.v3i12.2477

Timber harvesting has long been the primary focus of forest utilization as a major economic resource, yet more efficient strategies are needed to reduce excessive logging by implementing measured harvesting and maximizing the use of all wood components. Branches, logging residues, sawmill by-products, and discarded wooden furniture remain underutilized and are often treated as waste. These materials have high potential to be converted into value-added products such as biochar. Forestry waste is particularly suitable as a feedstock for biochar due to its lignocellulosic richness. Biochar is a carbon-rich material produced through pyrolysis. Biochar derived from forestry waste has significant potential to improve soil structure and water-holding capacity, while also contributing to long-term carbon storage and climate change mitigation. However, challenges remain, including variability in biochar quality, absence of global standards, high production costs, contaminant risks, and limited formal guidelines.

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