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All Journal G-Tech : Jurnal Teknologi Terapan
Mutasim Billah
Universitas Pembangunan Nasional “Veteran” Jawa Timur, Indonesia
Computer Science & IT Decision Sciences, Operations Research & Management Energy Engineering

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Briket Arang dari Limbah Tempurung Kemiri dan Serbuk Gergajian Kayu Sengon dengan Perekat Arpus (Gum Resin) Menggunakan Proses Karbonisasi Raffi Abimanyu; Farhan Muhammad Zuhdi; Mutasim Billah; Novel Karaman; Caecilia Pujiastuti
G-Tech: Jurnal Teknologi Terapan Vol 8 No 3 (2024): G-Tech, Vol. 8 No. 3 Juli 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v8i3.4831

Abstract

The type of alternative energy that can be used to replace non-renewable energy is biomass. Researchers will focus on making biomass, namely making charcoal briquettes from candlenut shell waste and wood sawdust, where these two basic materials have very good potential to be used as basic materials for making charcoal briquettes. Each material is carbonized to become charcoal. The carbonized charcoal is uniform in size to 60 mesh. Candlenut shell charcoal and sawdust charcoal are mixed in a ratio of 9:1, 8:2, 7:3, 6:4, 5:5 and arpus adhesive 7, 9, 11, 13, 15 grams. The briquette samples are molded and dried. The research results obtained the highest fixed carbon value from a 9:1 composition with 15gram adhesive of 73.77% and a calorific value of 5375.25 cal/g. These results have met quality standards according to SNI No.1/6235/2000.
Selulosa Asetat dari Batang Singkong dengan Proses Cellanase Yogi Irfan Maulana; Esa Wahyu Nur Hidayat; Mutasim Billah
G-Tech: Jurnal Teknologi Terapan Vol 9 No 2 (2025): G-Tech, Vol. 9 No. 2 April 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i2.6872

Abstract

Cassava stalks waste can be used as a material for making particleboard, crafts, briquettes, charcoal, bioethanol, and producing alpha-cellulose. Alpha-cellulose produced from cassava stems can be used as Cellulose Acetate. This study aims to obtain cellulose acetate from cassava stems and find relatively good conditions based on variations in acetylation time and volume of acetic anhydride. The process of making cellulose into cellulose acetate is carried out in several stages, namely pre-treatment, cellulose isolation, and acetylation. In the pre-treatment process, cassava stems will be reduced in size and softened to facilitate fiber extraction. Next, cellulose isolation is carried out by delignification and bleaching to obtain alpha-cellulose. In the acetylation stage, cellulose is first activated with glacial acetic acid before being acetylated with acetic anhydride. In this study, the effect of acetylation time (30, 60, 90, 120, 150 minutes) and the effect of adding volume (10, 12.5, 15, 17.5, 20 ml) on the acetyl content and degree of substitution of cellulose acetate from cassava stlaks were investigated. Based on the results of the study, the relatively good acetyl content and degree of substitution were obtained at a volume of 20 ml and a time of 150 minutes, with an acetyl content of 34.8% and a degree of substitution of 1.987. The synthesized cellulose is classified as monoacetate cellulose, which can be used in the manufacture of plastics and paints.
Co-Authors Caecilia Pujiastuti Esa Wahyu Nur Hidayat Farhan Muhammad Zuhdi Novel Karaman Raffi Abimanyu Yogi Irfan Maulana