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All Journal Jurnal Ilmu dan Teknologi Kayu Tropis JURNAL HUTAN TROPIS Jurnal Penelitian Hasil Hutan
Herman Siruru
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Materials Science & Nanotechnology

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Pengaruh Durasi Steam terhadap Kualitas Arang Aktif Limbah Sagu (The Effect of Steam Duration on Quality and Characteristics of Activated Charcoal of Sago Waste) Herman Siruru; Wasrin Syafii; Nyoman J Wistara; Gustan Pari
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3037.633 KB) | DOI: 10.51850/jitkt.v16i2.447

Abstract

Sago waste is a potential biomass that can be used as active charcoal raw material. The objectives of this research were to know the effect of steam duration on quality and characteristics of activated charcoal of sago waste. Carbonization process was carried out at 400 ⁰C for four hours, then activation was carried out at 100 ml bar steam pressure, at a temperature of 800 ⁰C with variations of steam duration 60, 80 and 100 minutes and activation without steam, only heating for 60 minutes. The proximate test used the SNI standard, observed the functional group using Fourier Transform Infrared Spectrophotometer (FTIR) and observed the active charcoal structure using X-ray diffraction (XRD). The results showed that the yield, moisture content, volatile, ash content, fixed carbon, iodine absorption of activated charcoal of sago bark and sago soft core were, respectively, 39.22–84.10%, 4.63–6.39%, 3.03–5.06%, 7.74–33.43%, 61.54–88.63%, 158.60–972.60 mg g-1. XRD analyzes showed that the degree of crystalline activated charcoal of sago bark waste with the highest steam time of 100 minutes (35.98%) compared with the degree of crystalline other activated charcoal is only about 20.57-7.30%. FTIR spectroscopy results from activated charcoal of sago waste also identified nitrogen compounds such as NO­2 at wave numbers 1370-1390 cm-1; 1530-1560 cm-1; 1620-1660 cm-1 and phosphorus compounds such as P-S at 200-500 cm-1 wave number; P=S at the wave number 500-850 cm-1.
COMPATIBILITY OF FOUR TROPICAL WOOD SPECIES AND SAGO STEM TO CEMENT AND PROPERTIES OF MANGIUM CEMENT BONDED PARTICLEBOARD Dede Hermawan1; Ismail Budiman; Herman Siruru; Jessica Hendrik; Gustan Pari
Jurnal Penelitian Hasil Hutan Vol. 38 No. 2 (2020): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2020.38.2.81-90

Abstract

The quality of the cement board depends on the compatibility between cement and particles fromlignocellulosic biomass. The purpose of this study was to determine the compatibility between cementand particles from four tropical wood namely mangium (Acacia mangium Willd), teak (Tectona grandisLinn. F.), gelam (Melaleuca leucadendron (L.), dadap (Erythrina variegata L.), and sago stem (Metroxylonsago Rottb.), and to determine the physical and mechanical properties of the mangium cement boardproduced by adding magnesium chloride (MgCl2) as an accelerator. This research was conducted intwo steps. The first step consisted of measuring the hydration temperature of a mixture of cement with particles from the four wood species and sago stems by adding magnesium chloride (MgCl2),with variations of 0%, 2.5%, 5%, and 7.5% based on the cement weight. Two types of mixturesfrom the first step were then used in the second step, namely the manufacture of cement board. The cement board was made using a weight ratio of mangium particles:cement:water of 1:2.7:1.35. Theboard is made with a target density of 1.2 g/cm3. Physical and mechanical testing refers to the ISO8335-1987 standard. The results of the hydration temperature showed that all of the mixtures wereclassified into “low inhibition”, except for mixture between cement and mangium particles without a catalyst which was included in the classification of “moderate inhibition”. While the results of cement board tests indicate that the cement boards made from mangium wood particles with 5%MgCl2addition had better properties compared to mangium cement boards without catalysts.
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 Dede Hermawan1 Edward Ridolf Kesaulya Fransina Sarah Latumahina Gustan Pari Henderina Lelloltery I Nyoman Jaya Wistara Ismail Budiman Jessica Hendrik Sofia Mustamu Wasrin Syafii