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All Journal JURNAL HUTAN TROPIS Jurnal Penelitian Hasil Hutan
Sofia Mustamu
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Materials Science & Nanotechnology

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KARAKTERISTIK BIOPELET DARI LIMBAH PADAT KAYU PUTIH DAN GONDORUKEM Sofia Mustamu
Jurnal Penelitian Hasil Hutan Vol. 36 No. 3 (2018): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2018.36.3.191-204

Abstract

Biopelet is a solid fuel made of forging a cylindrical biomass and it could be used as an alternative energy. Cajuput and pine resin wastes are two potential material for biopellet. Biomass fuel in the form of biopellet provide better heat quality than direct biomass combustion. This paper studies the particle size and process temperature in producing optimum and environmentally friendly biopellet. Raw materials of cajuput and pine resin wastes were mixed, powdered and sieved into 20, 40, 60 and 80 mesh. Thirty grams of each powder was molded with the composition of 70% cajuput solid waste and 30% of pine resin. Biopellet was compressed using compression hydraulic press machine of 526.48 kg/cm2 with a temperature of 120, 150, 180, 200, 230 and 260°C. The results showed that the biopellet made of 40 mesh mixed powder and temperature process of 230°C produced the optimum quality of biopellets. Thr physical properties of the biopellet made of 40 mesh powder and 230°C processing temperature were: 1.905% moisture content; 3.955% ash content; 72.189% vollatile matter; 21.949% fixed carbon; 5,097.5 kcal/kg calorific value and compression strength of 53.746 kgf/cm2.
KAJIAN KEANEKARAGAMAN FLORA & FAUNA DI NEGERI TITAWAAI PULAU NUSALAUT, KABUPATEN MALUKU TENGAH Research on the Flora and Fauna Diversity in Titawaai Village, Nusalaut Island, Central Maluku Regency Henderina Lelloltery; Andry Tuhumury; Edward Ridolf Kesaulya; Fransina Sarah Latumahina; Herman Siruru; Sofia Mustamu
Jurnal Hutan Tropis Vol 14, No 2 (2026): Jurnal Hutan Tropis Volume 14 Nomer 2 Edisi Juni 2026
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v14i2.24338

Abstract

This research aims to determine the level of flora and fauna diversity in Titawaai Village. Data collection focused on plant species diversity using the quadrat strip method and on wildlife observation using the variable circular-plot method. Wildlife observation during the research period included both direct and indirect sightings (sounds, tracks, droppings, nests, feeding remains, scratch marks, and/or other indications). The floral and faunal potential in Titawaai Village includes 15 species of birds and 1 species of mammal, with a conservation status comprising 5 endemic animal species. This potential is supported by habitat conditions in the form of vegetation which serves as a food source, seed disperser, and canopy layer that plays a role in maintaining microclimate stability and providing energy resources. The diverse vegetation composition consists of : 21 species at the tree level, dominated by several local species such as clove (Syzygium aromaticum (L.)); 17 species at the pole level, dominated by kayu kinar (Mallotus japonicus); 15 species at the sapling level, dominated by red gohi (Ficus melinocarpa Blume); and 7 species at the seedling level, dominated by kayu raja (Endospermum moluccanum).
Co-Authors Andry Tuhumury Edward Ridolf Kesaulya Fransina Sarah Latumahina Henderina Lelloltery Herman Siruru