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All Journal Jurnal DISPROTEK G-Tech : Jurnal Teknologi Terapan Journal of Engineering Science and Technology Management JES-TM Social and Community Service
Dhora, Anna
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Other

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ANALISIS KARAKTERISTIK PAPAN KOMPOSIT DARI SERAT PELEPAH KELAPA SAWIT Patitis, Niken; Wahyuni, Sri; Dhora, Anna
Jurnal Disprotek Vol 15, No 2 (2024)
Publisher : Universitas Islam Nahdlatul Ulama Jepara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34001/jdpt.v15i2.6369

Abstract

Komposit adalah bahan yang dihasilkan dari gabungan dua atau lebih bahan dasar yang disusun sehingga mendapatkan bahan baku yang baru. Pelepah kelapa sawit memiliki potensi yang sangat baik untuk dimanfaatkan sebagai pengganti kayu dalam pembuatan papan komposit. Resin Polyester BQTN-157 merupakan jenis resin thermoset atau lebih sering disebut polyester. Resin Polyester BQTN-157 berupa resin cair dengan viskositas yang cukup rendah, mengeras pada suhu kamar dengan penggunaan katalis tanpa menghasilkan gas sewaktu pencetakan. Tujuan dari penelitian ini adalah untuk mengetahui proses pembuatan papan komposit berbahan baku serat pelepah kelapa sawit, mengetahui komposisi dan bahan terbaik dalam pembuatan papan komposit berbahan baku serta pelepah kelapa sawit sesuai standar SNI 03-2105-2006 serta untuk mengetahui karakteristik pembuatan papan komposit berbahan baku serta pelepah kelapa sawit sesuai standar SNI 03-2105-2006. Metode penelitian terdiri dari tiga tahapan yaitu persiapan bahan baku, pembuatan papan komposit dan uji karakteristik papan komposit. Pelakuan pada penelitian ini yaitu pembuatan bahan baku dengan campuran serat pelepah dan resin dengan variasi 1:2 (P1), 1:2,5 (P2), 1:3 (P3), 1:3,5 (P4), 1:4 (P5). Hasil penelitian menunjukkan bahwa papan komposit kualitas terbaik terdapat pada perlakuan 1:3 (P3) dengan penilaian karakteristik kadar air sebesar 0,5 %, uji bending sebesar 112,16 kg/cm2, dan uji tarik sebesar 40,78 kg/cm2 sesuai dengan standar SNI 03-2105-2006.ANALYSIS OF COMPOSITE BOARD CHARACTERISTICS FROM PALM OIL FRONDSA composite is a material obtained from a combination of two or more basic materials that are assembled so as to obtain a new raw material. Palm oil fronds have excellent potential to be used as a replacement for wood in composite board manufacturing. The BQTN-157 polyester resin is a type of thermoset resin, or more commonly called a polyester. It is a liquid resin with a relatively low viscosity, hardening at room temperature with the use of catalysts without generating gasses during printing. The underlying issue of this research is to find out the composite board manufacturing and characteristics of composite boards made from palm oil fronds released according to SNI 03-2105-2006. The research methodology includes preparation of raw materials, manufacture of composite boards, and characteristic testing of composites. The method of this study consists in making raw materials with a mixture of fiber and resin with a variation of 1:2 (P1), 1:2,5 (P2), 1:3 (P3), 1:3,5 (P4), and 1:4 (P5). The results of the study show that the best quality composite board is found at treatment 1:3 (P3) with a water content characteristic assessment of 0.5%, a bending test of 112.16 kg/cm2, and a pull test of 40.78 kg/cm2 according to SNI standard 03-2105-2006.
Influence of Hydrogen Peroxide on the Bleaching Process of Pulp Derived from Oil Palm Fronds and Empty Fruit Bunches Hariani, Razita; Asma Deli, Nur; Dhora, Anna
Journal of Engineering Science and Technology Management (JES-TM) Vol. 5 No. 1 (2025): Maret 2025
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v5i1.249

Abstract

Oil palm fronds and empty fruit bunches (EFB) are the main by-products of oil palm plantations. Typically, these residues are used for organic fertilizer, mat production, or as a growing medium for plants and fungi. However, oil palm fronds and EFB have high cellulose content, making them promising raw materials for pulp and paper production. This study aimed to investigate the pulp and papermaking process using oil palm fronds and EFB as raw materials. A soda pulping process was applied, followed by bleaching using various concentrations of hydrogen peroxide, namely 8%, 10%, 12%, 14%, and 16%. The results showed that optimal pulp and paper quality was achieved using 16% hydrogen peroxide, which produced pulp with a brighter and whiter appearance. The resulting paper showed a thickness of 0.62 mm, a grammage of 56.58 g/m², and a density of 35.07 kg/m³.  
Peningkatan Kompetensi IT Guru Kelas di SD Negeri Induk Bangkinang Kota Dalam Pelaksanaan Kurikulum 2013 Marwa, Safni; Dhora, Anna
Journal of Social and Community Service Vol. 2 No. 1 (2023): Maret 2023
Publisher : Faculty of Engineering University of Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestmc.v2i1.80

Abstract

In implementing the 2013 curriculum, competence and creative class teachers based IT (information technology) is essential. Not only is the use of the application reporting the results of students' studies, but also in the practice of teaching such as the use of computers and the Internet as a learning media. It's mostly class teachers, especially in the elementary school of the country in the Bangkinang Kota district, still not mastering and using the information technology. This led to a low level of basic schooling against both private primary schools carrying out the 2013 curriculum. For that, there needs to be an effort to improve class teacher competence at the primary school in the mastery of it in order to sustain the execution of the 2013 curriculum. As the elementary schools (SD Negeri) leader in the Bangkinang Kota, consists of three schools following: SD Negeri 003 Bangkinang Kota, SD Negeri 005 Langgini and SD Negeri 006 Langgini. Efforts to improve the competence of class teachers starting from evaluation, which is based on the evaluation will continued to the application usage and making media learning. As the end result, in classes and evaluation done enrichment capability it so teachers back against the more ready to the learning. Guiding primary the nucleus it needs to be done to giving effect to other public school Bangkinang Kota in particular
Optimizing Biobriquette Quality : The Role of Raw Material Selection in Tapioka Based Binder System Fatmayati, Fatmayati; Dhora, Anna; Romiyadi, Romiyadi
G-Tech: Jurnal Teknologi Terapan Vol 9 No 4 (2025): G-Tech, Vol. 9 No. 4 October 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i4.7960

Abstract

The continuous increase in energy consumption, along with the gradual depletion of fossil fuel reserves, highlights the need for sustainable alternative energy sources. Oil palm biomass waste is a promising raw material due to its abundance and high calorific value. This study aims to investigate the production process of biobriquettes made from four types of oil palm waste leaves, fronds, trunks, and shells using natural tapioca starch as a binder. The experimental procedure consisted of several stages: raw material preparation (cleaning, cutting into 1–3 cm pieces, and sun-drying), carbonization by incomplete combustion (pyrolysis) for approximately three hours, grinding and sieving through a 60-mesh screen, mixing the charcoal with 17% tapioca binder solution (starch-to-water ratio of 1:7), manual pressing, and oven drying at 105°C for ten hours. The resulting biobriquettes were evaluated based on SNI 01-6235-2000 standards, including moisture content, ash content, volatile matter, fixed carbon, and burning rate. The trunk-based biobriquette exhibited the best performance, with 5.10% moisture, 5.95% ash, 12.95% volatile matter, 76.00% fixed carbon, and a burning rate of 0.1256 g/min. Most parameters met the SNI requirements, except for slightly lower fixed carbon content. Therefore, oil palm trunk biomass is recommended as the most suitable raw material for producing high-quality, eco-friendly biobriquettes.
Co-Authors Asma Deli, Nur Marwa, Safni Niken Ellani Patitis Razita Hariani Romiyadi Romiyadi Sri Wahyuni