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Jurnal Penelitian Hasil Hutan

JPHH
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Published by Badan Penelitian dan Penegembangan Kehutanan

ISSN : 02164329 EISSN : 24428957 DOI : -

Core Subject : Science, Agriculture,

Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management

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Articles 1,559 Documents

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PEMBUATAN ARANG AKTIF DARI BATUBARA Gustan Pari
Jurnal Penelitian Hasil Hutan Vol 17, No 4 (2000): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Dalam tulisan ini dikemukakan hasil penelitian tentang pembuatan arang aktif dari batubara dengan cara aktivasi uap kimia. Tujuan penelitian ini adalah untuk mengetahui pengaruh suhu aktivasi dan konsentrasi bahan pengaktif terhadap hasil dan kualitas arang aktif Proses pembuatan arang aktif dilakukan dalam retor ba}a tahan karat yang dilengkapi dengan pemanas listrik pada suhu 700°C, 800°C, 900°C dan sebagai bahan pengaktif digunakan LaHutan NH4HC03dengan konsentrasi masing-masing 0,0; 0,5; 1,0; 3,0; 5,0 dan 10,0%.Kualitas a rang aktif batubara yang baik, dihasilkan dari arang aktif yang dibuat pada suhu 800°C dengan konsentrasi NH4HC03 5,0 % yang menghasilkan rendemen sebesar 84,5%, kadar air 5,77%, abu 19,74%, zat terbang 6,60%, karbon terikat 73,66%, daya serap terhadap yodium 424,20 mg/g dan daya serap terhadap benzena sebesar 10,17%. Dilihat dari besamya daya serap terhadap yodium dan kadar abu arang aktif batubara, maka bahan pengaktif NH4HC03 kurang baik untuk digunakan sebagai bahan pengaktif dalam pembuatan arang aktif dari batubara. Namun demikian arang aktif dari batubara ini dapat digunakan untuk menjemihkan air.

SIFAT PEMESINAN ENAM JENIS KAYU INDONESIA Bakir Ginoga
Jurnal Penelitian Hasil Hutan Vol 13, No 6 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The quality of machining properties of six Indonesian wood species, i.e. meranti merah (Shorea selanica BI .), medang lesa (Cinnamomum parthenoxylon Meissn.), dahu (Draconto-melon mangiferum BI.), kaya (Khaya anthoteca Cdc.), bawang (Melia excelsa Jack.), and merawan (Hopea odorata , from Darmaga Experimental forest, has been investigated. The testing was carried out based on air dried specimen. The results revealed that the planing and moulding quality varies from good (II) to very good classes(1); turning and sanding belong to good class (II). while boring quality varies from medium (III) to good (II) classes.

BIODEGRADASI KOMPONEN KIMIA PADA LIMBAH LIGNOSELU- LOSA OLEH JAMUR PERUSAK KAYU (Biodegradation of wood chemical components in lignocellulosic wastes by whiterot fungi) Sri Komarayati; TjuTju Nurhayati; Gusmailina Gusmailina
Jurnal Penelitian Hasil Hutan Vol 11, No 2 (1993): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

This paper reports the result of an experiment on the treatment of different forestry wastes, i.e., the sawdust of Hevea brasiliensis Pinus merkusii, Paraserianthes falcataria and the leaves of melaleuca leucodendron with Schizophyllum commune Fr for 7 weeks.The purpose of this study is to assess the effect of white-rot fungi inoculation to the decrease of chemical components like cellulose, lignin and hemicellulose.the results reveal that after treating for 7 weeks, sengon sawdust still has a very .high cellullose content of 22.55% in rubber tree sawdust, lignin and hemicellulose contents are 32.66% and 47.39%, respectively.After decreasing chemical components. Lignocellulose waste could be fermented by solid state fermentation for biogas.

PENELAAHAN SIFAT PRIORITAS PEMANFAATAN JENIS TANAMAN UNTUK KAYU BAKAR Rachman Effendi; Suwidji Basuki; Han Roliadi
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

There is a need to classify fire wood for flue/ based on energy content. This research is conducted to categorized fire wood species using discriminant analysis.Data of which collected from each of research areas are plant varieties for fire wood, age classification, annual volume increase, specific gravity, calor value and volume of extractive elements.Variety of woods used for fire wood are Akasia (Acacia auriculiformis), Akasia (Acacia decurrens), Kaliandra (Calliandra callothyrsus), Gamal (Gliricidia maculata), Kemlandingan (Leucaena glauca), Turi (Sesbania grandiflora) and Jati (Tectona grandis). For the purpose of analysis of the type of relationship between annual volume increase (X1), specific gravity (X2), calor value (X3), volume of extractive elements (X4) and the adaptation order of plant varieties for fire wood is clasified by the discriminant function.The function is also used for determining adaptation order of utilization of plant varieties for fire wood.Based on the discriminant analysis it can be expressed as:Yj = 0.2148X1j + 9.7184X2j + 0.7231 X3j - 6.7121 X4j..................................................................(1). The result of average substitutions of annual volume increase, as specific gravity, ca/or value increase and volume of extractive elements decreased as described by the equation (I). It can be said that (the adaptation order of plant varieties for fire wood) produced from the most to the least based on its number of heat of combustion at the plantation age 2, 3 and 4 years are Akasia (Acacia decurrens), Akasia (Acacia auriculiformis), Kaliandra (Calliandra callethyrsus), Gamal (Gliricidia maculata), Kemlandingan (Leucaena glauca), Turi (Sesbania grandiflora) and Jati (Tectona grandis).

BAGAN PENGERINGAN BEBERAPA JENIS KAYU HUTAN TANAMAN INDUSTRI Efrida Basri
Jurnal Penelitian Hasil Hutan Vol 6, No 7 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

This paper describes a kiln drying experiment of wood, with several species that proposed as industrial timber estate. There are eight species were investigated five of which taken from natural forest, while the others are from plantation. The experiment was conducted in two stages, quick drying tests in an electrical oven and actual drying in two small dry kilns. Result of quick drying tests are rough kiln schedules and the schedules were tested in the small kilns.Drying properties of wood taken from natural forest are practically similar to those of plantation stands, Tengkawang, begontoi, kuntui, damar mata kucing and jeungjing have the same kiln drying schedule.

KEAWETAN KAYU TUSAM (Pinus merkusii Jungh. et de Vr.) DAN MANGIUM (Acacia mangium Willd.) SETELAH FURFURILASI Jamal Balfas; Ginuk Sumarni
Jurnal Penelitian Hasil Hutan Vol 13, No 7 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Two regrowth wood species, i.e. tusam (Pinus merkusii Jungh. et de Vr.) and mangium (Acacia mangium Wild.) were used in this study. Specimens measuring 25 mm x 25 mm x 50 mm and 5 mm x 25 mm x 25 mm were prepared for testing against dry-wood termite (Cryptotermes) and subteranean termite (Coptotermes) respectively. All specimens were air-dried to approxi mately 16-18% moisture content. One group of the specimens was further oven - dried to reach moisture content of 6-8%. Furfurylation was carried out by soaking wood specimens for 24 hours in a 98% fuifuryl alcohol solution containing 0.35% (v/v) of ZnCl2 as catalyst. Furfurylated specimens were then cured at l000C for 48 hours. Control and treated specimens were exposed to dry-wood and subteranean termites for 12 and 4 weeks respectively.Treated specimens revealed a weight gains of 10 to 40 % depending on size of specimens and wood species. Speciesmens usd for testing drywood termites gained less weight than those of subteranean termites. Tusam specimens markedly showed a higher weight gain than mangium. Furfurylation using method 1 resulted in comparable weight gain to that of method 2. Control specimens of tusam an mangium are both encountered susceptible to dry-wood and subteranean termite attacts. Tusam had less initial durability against Coptotermes than mangium, but the wood species had a similar durability against Cryptotermess. The modified wood with furfuryl alcohol abviously possessed an improved durability upon the two termites. Tusam specimens gained more durability improvement than mangium.

STABILISASI DIMENSI PADA KAYU TANAMAN KARRI (EUCALYPTUS DIVERSICOLOR) DAN JARRAH (E. MARGINATA) BAGIAN I : ASETILASI Dimensional stabilization on regrowth karri (Eucalyptus diversicolor) and jarrah (E. Marginata) Part I : Acetylation Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol 11, No 3 (1993): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Wood blocks of karri and jarrah measuring 10 mm (radial) x 25 mm (longitudinal) x 100 mm (tangential) were ovendried for 48 hours at 105°C prior to treatment. Acetylation was carried out in 250 ml- reactor vessels using a 25 % (v/v) solution of acetic anhydride in xylene. Three reaction times, i.e., 8, 16 and 24 hours were used for each wood type. Treatment results are expressed in terms of weight gain (VG) and volumetric gain (VG). The ability of treatment to restrict dimensional changes is expressed as anti swelling efficiency (ASE). Results showed that the weight and volume of both eucalypts specimens substantially increased after acety- lation. In all cases, karri specimens showed higher weight gain, volumetric gain and ASE than jarrah. The effectiveness of acetylation increased with increases in reaction time. Volumetric swelling reduction of more thaw 80% was found in the two regrowth eucalvots.

GASIFICATION OF CHARCOAL IN FLUIDIZED BED FOR MANUFACTURING ACTIVE CARBON Hartoyo Hartoyo
Jurnal Penelitian Hasil Hutan Vol 5, No 1 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Percobaan gasifikasi arang dalam fluidized bed untuk pembuatan arang aktif ini, dilakukan dalam rangka kerjasama penelitian ATA 251 Indonesia - Belgia yang diselenggarakan oleh Pusat Penelitian dan Pengembangan Hasil Hutan, Bogor.Aspek yang dibahas dalam penelitian ini adalah kondisi pengolahan dengan maksud untuk mempelajari pengaruh suhu dan waktu reaksi aktivasi terhadap rendemen dan kualitas karbon aktif yang dihasilkan. Kondisi perlakuan yang diberikan pada percobaan ini adalah temperatur aktivasi tiga tingkat (731°C, 767°C, 827°C) dengan masing-masing waktu reaksi lima tingkat (10, 20, 30, 40, 50 menit). Kondisi gasifikasi untuk aktivasi dibuat tetap yaitu laju alir uap 0,41 kg/jam dan nitrogen sekitar I,70 kg/jam.Hasil penelitian menunjukkan bahwa semua kondisi perlakuan yang diberikan dapat menghasilkan karbon aktif kualitas baik yang ditetapkan oleh daya serap terhadap jodium yaitu 510 sampai 1068 mg/g. Kualitas tersebut termasuk dalam standar perdagangan yang dibuat oleh "American Water Work Association" (AWWA) yaitu sebesar tidak kurang dari 500 mg/g.Kondisi optimum proses dicapai pada suhu 827°C dengan waktu reaksi 10 menit. Pada kondisi ini memberikan rendemen karbon aktif 61,7% dengan daya serap jodium 687 mg/g. Selanjutnya waktu reaksi optimum terhadap daya serap karbon aktif hasil untuk masing-masing perlakuan suhu reaksi kelihatannya sama yaitu sekitar 40 menit.Konsumsi uap optimum dalam percobaan ini adalah 3,7 kg untuk tiap kg karbon aktif hasil. Konsumsi uap yang diperlukan tersebut lebih rendah jika dibandingkan dengan kebutuhan uap untuk produksi karbon aktif skala komersial dengan cara kiln berputar di Jerman yang dilaporkan oleh Hormat (1952) yaitu 8 kg uap untuk 1 kg karbon aktif.

PEMANFAATAN LIMBAH LIGNOSELLULOSA UNTUK GAS BAKAR DENGAN METODE FERMENTASI Tjutju Nurhayati Syahri
Jurnal Penelitian Hasil Hutan Vol 6, No 7 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The gasification of lignocellulosic waste was conducted by fermentation method at thermophilic condition (45 -55°C). The material was obtained from vegetable market at Bogor. The gasification trial made in pilot scale reactor of having capacity of 30 m3 and equipped with gas holder of 50 m3, steam boiler of 50 kg/h and dual generator of 17.5 kVA. The waste was cut first become 1-3 cm long on choper of 0.3 m3/h volume. Parameter of fermentation choosed on 10 m3 volume actif and retention time was 20.9 daysThe result revealed that thermophilic fermentation of waste which had total solid about 22.3 % and ash about 33.9 % and feeding about 478 kg fresh waste per day produced biogas about 28.7 m3 per day on methane content about 54.5 %, productivity about 2.9 m3 per m3 reactor per day and efficiency of conversion about 57 %.The total of fuel consumption along fermentation per day was 4.34 hours of man hours work about 1.16 MJ and it was from 1 tube LPG of 12.5 kg and 14.31 diesel. LPG was used for steam boiler can be changed with 31.2 m3 biogas per day. In this case the production of biogas per day cannot be dropped for the total of fuel consumption even steam boiler. The fermentation of 22965 kg wet lignocellulosic waste produced gas bio about 1380 m3 and wet residu for compos raw material about 16430 kg. The biogas production was equavalent with 44 LPG container of 12.5 kg.

PENERAPAN METODE TREE LENGTH LOGGING SKALA OPERASIONAL DI AREAL TEKNIK SILVIKULTUR INTENSIF (STUDI KASUS DI PT SARMIENTO PARAKANCA TIMBER PROVINSI KALIMANTAN TIMUR) Maman Mansyur Idris; Soenarno Soenarno
Jurnal Penelitian Hasil Hutan Vol 33, No 1 (2015): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2015.33.1.19-34

Metode tree length logging sebagai alternatif cara pemanenan kayu merupakan upaya untuk meningkat-kan efisiensi pemanfaatan hasil hutan kayu dan kelestarian hutan produksi alam. Saat ini kontribusi produksi kayu bulat hutan alam semakin menurun akibat masih borosnya proses pemanenan dan makin terbatasnya luas hutan alam produksi. Penelitian ini bertujuan untuk mengetahui kinerja penerapan metode pembalakan kayu sepanjang mungkin dalam skala operasional. Penelitian dilaksanakan pada areal hutan yang dikelola dengan teknik silvikultur intensif (SILIN) di PT Sarmiento Parakanca Timber (SARPATIM), Kabupaten Kotawaringin Timur, Provinsi Kalimantan Tengah. Pengumpulan data melalui pengamatan dan pengukuran langsung di lapangan meliputi produktivitas kerja dan biaya penebangan dan penyaradan, limbah pembalakan, faktor eksploitasi (FE) dan kerusakan tegakan tinggal. Hasil penelitian menunjukkan bahwa produktivitas penebangan meningkat menjadi 60,535 m /jam dan produktivitas penyaradan sebesar 31,931 m /jam. Selain itu, penerapan metode tree length logging dapat memperkecil biaya penebangan menjadi Rp 1.604,36/m dan penyaradan Rp 21.142,75/m , meningkatkan nilai FE mejadi 0,93 dan dapat menekan kerusakan tegakan menjadi sebesar 20,70%.

Page 28 of 156 | Total Record : 1559

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Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan Vol 5, No 6 (1988): Jurnal Penelitian Hasil Hutan Vol 5, No 5 (1988): Jurnal Penelitian Hasil Hutan Vol 5, No 4 (1988): Jurnal Penelitian Hasil Hutan Vol 5, No 3 (1988): Jurnal Penelitian Hasil Hutan Vol 5, No 2 (1988): Jurnal Penelitian Hasil Hutan Vol 5, No 1 (1988): Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan Vol 4, No 3 (1987): Jurnal Penelitian Hasil Hutan Vol 4, No 2 (1987): Jurnal Penelitian Hasil Hutan Vol 4, No 1 (1987): Jurnal Penelitian Hasil Hutan Vol 3, No 4 (1986): Jurnal Penelitian Hasil Hutan Vol 3, No 3 (1986): Jurnal Penelitian Hasil Hutan Vol 3, No 2 (1986): Jurnal Penelitian Hasil Hutan Vol 3, No 1 (1986): Jurnal Penelitian Hasil Hutan Vol 2, No 4 (1985): Jurnal Penelitian Hasil Hutan Vol 2, No 3 (1985): Jurnal Penelitian Hasil Hutan Vol 2, No 2 (1985): Jurnal Penelitian Hasil Hutan Vol 2, No 1 (1985): Jurnal Penelitian Hasil Hutan Vol 1, No 4 (1984): Jurnal Penelitian Hasil Hutan Vol 1, No 3 (1984): Jurnal Penelitian Hasil Hutan Vol 1, No 2 (1984): Jurnal Penelitian Hasil Hutan Vol 1, No 1 (1984): Jurnal Penelitian Hasil Hutan More Issue

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