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Christy, Eva Oktoberyani
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Agriculture, Biological Sciences & Forestry

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Pengaruh Perlakuan Ekstraksi Terhadap Sifat Fisika dan Mekanika Papan Semen Berbahan Baku Tumbuhan Bamban (Donax canniformis) : The Effect of Extraction Treatment on the Physical and Mechanical Properties of Cement Boards Made from Bamban (Donax canniformis) Luhan, Gimson; Santoso, Mahdi; Putra, Apri Wijaya; Supriyati, Wahyu; Christy, Eva Oktoberyani; Silvianingsih, Yosefin Ari; Yanciluk, Yanciluk
HUTAN TROPIKA Vol 18 No 2 (2023): Volume 18 Nomor 2 Tahun 2023
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v18i2.11961

Abstract

Wood or lignocellulosic materials with high extractives are not recommended for making cement boards. Extraction of raw materials before the cement board manufacturing is a treatment carried out to address this issue. The aim of this research is to determine the influence of cold and hot water extraction treatment on Bamban particles on the quality of the cement boards. This research was conducted by immersion bamban particles on hot water (boiling at 100°C) for 3 hours. The mixture ratio between cement and bamban particles was 1.5:1 (w/w), and it was compressed for 1 hour at a pressure of 30 bar, followed by manual pressure (clamping) for 24 hours. The physical and mechanical properties of cement boards was conducted according to SNI 03-2104-1991 for wood-wool cement boards. The results of the study show that hot water extraction treatment has a very significant effect on the quality of the resulting cement boards.
Kualitas Papan Semen dari Partikel Bamban (Donax canniformis): Quality of Cement Board of Bamban (Donax canniformis) Particles Santoso, Mahdi; Luhan, Gimson; Putra, Apri Wijaya; Christy, Eva Oktoberyani; Silvianingsih, Yosefin Ari; Yanciluk, Yanciluk; Pidjath, Chartina
HUTAN TROPIKA Vol 19 No 1 (2024): Volume 19 Nomor 1 Tahun 2024
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v19i1.14252

Abstract

The aim of this research is to determine the influence of mixture rasio of cement/bamban particles on the quality of the cement boards. This research was conducted by four mixture rasio cement/bamban particles (w/w) that was 1.25/1, 1.5/1, 1.75/1 and 2/1. Bamban particles was immersion on hot water (boiling at 100°C) for 3 hours to remove the extractives compounds. The mixture ratio between cement and bamban particles was compressed for 1 hour at a pressure of 30 bar, followed by manual pressure (clamping) for 24 hours. The physical and mechanical properties of cement boards was conducted according to SNI 03-2104-1991 for wood-wool cement boards. The results of the study show that mixture rasio cement/bamban particles has a very significant effect on the quality of the resulting cement boards.
Studi Pendahuluan Kualitas Kayu Hutan Tanaman Eucalyptus Pellita F. Muell dengan Teknologi Modifikasi Panas Oil Heat Treatment (OHT) : Preliminary Study of Wood Quality of Plantation Forest of Eucalyptus pellita F. Muell with Oil Heat Treatment Heat Modification Technology Christy, Eva Oktoberyani; Siska, Grace
HUTAN TROPIKA Vol 19 No 2 (2024): Volume 19 Nomor 2 Tahun 2024
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v19i2.18591

Abstract

Indonesia's Industrial Forest Plantations (HTI) cultivate various fast-growing tree species such as Eucalyptus pellita F. Muell. Environmentally friendly and appropriate technologies can be used to improve the weaknesses and deficiencies of wood from HTIs. The Oil Heat Treatment (OHT) process does not use chemicals. This research aims to determine the effect of OHT duration of 0.5 hours, 1.5 hours, and 2.5 hours at a temperature of 200 ± 2°C on the physical properties of Eucalyptus pellita F. Muell. The results showed that the OHT heat treatment using used cooking oil significantly affected the moisture content but did not significantly affect the density
Rekayasa Kayu Eucalyptus pellita F. Muell Dengan Teknologi Oil Heat Treatment (OHT) : Wood Engineering Eucalyptus Pellita F. Muell With Oil Heat Treatment (Oht) Technology Siska, Grace; Christy, Eva Oktoberyani; Sihombing, Markus; Rizal, Moh; Pidjath, Chartina
HUTAN TROPIKA Vol 20 No 1 (2025): Volume 20 Nomor 1 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i1.20251

Abstract

Eucalyptus pellita F. Muell is a plant that is widely developed in Indonesia's Industrial Plantation Forest (HTI), because this plant is a fast growing wood. Eucalyptus pellita F. Muell wood has weaknesses in terms of durability quality and strength of its wood. Therefore, an environmentally friendly and effective application of technology is needed. Oil Heat Treatment (OHT) is one of the environmentally friendly and appropriate wood technologies because there are no chemicals during the treatment process. This study aims to determine the effect of the duration of OHT time of 1 hour, 2 hours and 3 hours with a temperature of 200 ± 2°C on changes in the physical properties of wood mechanics of Eucalyptus pellita F. Muell. The research results indicate that the heat treatment method known as Oil Heat Treatment (OHT) using used cooking oil can reduce the moisture content of wood over the duration of heating, as well as increase the density, Modulus of Elasticity (MoE), and Modulus of Rupture (MoR) of Eucalyptus pellita F. Muell wood, although the statistical analysis in the study showed that the treatment did not have a significant effect.
Analisis Sifat Kimia Kayu Meranti Tembaga (Shorea leprosula Mig.) Dari Hutan Alam Dan Hutan Tanaman Di PT. Dwima Jaya Utama : Chemical Properties Analysis of Meranti Tembaga Wood (Shorea leprosula Mig.) from Natural Forests and Plantation Forests at PT. Dwima Jaya Utama Joni, Herwin; Santoso, Mahdi; Wahyudi, Wahyudi; Sosilawaty, Sosilawaty; Tanduh, Yusintha; Triyadi, Antonius; Toni, Hendra; Christy, Eva Oktoberyani; Silvianingsih, Yosefin Ari
HUTAN TROPIKA Vol 20 No 1 (2025): Volume 20 Nomor 1 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i1.21999

Abstract

This study analyzes the chemical properties of Meranti Tembaga wood (Shorea leprosula Mig.) from natural forests and intensively managed plantation forests (Silin) at PT. Dwima Jaya Utama. Samples were taken from trees with diameters of 28 cm, 36 cm, 43 cm, and 51 cm to compare extractive content (cold water, hot water, ethanol-toluene), holocellulose, α-cellulose, lignin, and ash levels. Results showed that Silin-grown wood had higher extractive content in cold and hot water but lower lignin and ash levels compared to natural forest wood. α-Cellulose content was consistently high across all diameters, meeting industrial standards. The findings suggest that Silin techniques can produce quality wood with shorter harvest cycles, though chemical properties vary by diameter and origin. This research provides valuable insights for sustainable forest management and industrial applications of Shorea leprosula.
Co-Authors Gimson Luhan Hendra Toni Joni, Herwin Mahdi Santoso Pidjath, Chartina Putra, Apri Wijaya Rizal, Moh Sihombing, Markus Silvianingsih, Yosefin Ari Siska, Grace Sosilawaty, Sosilawaty Tanduh, Yusintha Triyadi, Antonius Wahyu Supriyati Wahyudi Wahyudi Yanciluk, Yanciluk