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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

Arjuna Subject : -

Articles 1,559 Documents

122 123 124 125 126

SEGMENTASI PASAR JASA REKREASI RUTAN Satria Astana
Jurnal Penelitian Hasil Hutan Vol 15, No 5 (1998): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The significant implication of research on further development of forest recreation service depends on the progress of market research on the service itself. As a part of the effort to addressing such issue, this study aims at identifying the market segments of recreation service at three sample forest units, namely: Carita, Situgunung and Sukamantri, all in West Java. The study reveals that university students, private officers and high school students, mostly living in Jakarta, were respectively significant variables for segmenting markets of the service offered. In addition, the marketing management of the service has been ineffectively designed, targeted and promoted to other growing markets such as young families with middle income status.

PENGARUH PERACUNAN TRIKLOPIR DAN POLA PENGGERGAJIAN TERHADAP SIFAT PENGGERGAJIAN KAYU RASAMALA (ALTINGIA EXCELSA NORONHA) Osly Rachman; Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol 6, No 5 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The objective of this study is to determine the sawing properties of triclopyr poisoned rasamala logs compared to the girdled and normal ones. The effect of sawing pattern on sawing properties were also observed.The log samples used in this experiment comprise of 18 pieces which were collected from three different groups of tree (poisoned and girdled in one year periode, and control). Six logs of each group were sawn in two sawing patterns, namely live sawing and semi-quarter sawing. Parameters of sawing observed include recovery, productivity, power con- sumption, and sawn timber defects, particulary splits and bowing.The results of study revealed that moisture content of poisoned logs was 20% lower than the normal one. Mean-while, both moisture content of girdled logs and poisoned ones are not significantly diferent. Poisoning treatment on rasamala trees in comparison to girdled and normal ones did not show significant difference in any sawing properties, except sawing productivity. The sawing recovery, power consumption, splits and bowing of sawn timber were 62%; 32.37 watt sec./cm2, 5.21 cm and 3.91 cm, respectively. The live sawing could increase the pro- ductivity as much as 0.18 m3 /hour higher than semi-quarter sawing.

PENGARUH PERLAKUAN PELAPISAN UJUNG TERHADAP PENGURAN GAN PECAH PADA PATUNG KA YU (BAGIAN I) Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol 12, No 5 (1994): 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.1994.12.5.169-174

Physical deformation such as checks or cracks is commonly encountered in the process of drying wood statues. In the senses of economic and quality improvement, such a case has long been a serious handicap to the Balinese crofters. A number of trials have been made through modification of drying schedules, but these gave little protection agents check/crack development, particularly for the medium to large size statues. The use of polyethylene glycol (PEG-1000) has significantly reduced the rate of physical deformation, however, it raised another problem in finishing and could promote a surface discoloration. This study examined another approach of cracking prevention by application of coating treatments to the end grain of wood structure.Fresh logs of two wood species, i.e., sengon (Paraserianthes falcataria {L.) Nielsen.) and mindi (Melia azedarach L.) were crosscut to 50 cm long specimens, and then shaped into a simple cat-form statues sizing of approximately 21 cm wide and 46 cm long. End coatings were applied separately using 4 different materials, i.e., resorcinol formaldehyde, polyvinyl acetate, wood filler and cement. All treatments were accomplished approximately 30 minutes prior to oven drying, Physical deformation of wood statues was de/ermined by measuring the width, length and gap-size of cracks using a digital caliper. The related physical characteristics, such as moisture content and specific: gravity of each species were also determined.Sengon had a lower specific: gravity, but a greater green moisture content and dry-ability than mindi. Wood physical deformation of both treated and untreated sengon was obviously greater than mindi. The effectiveness of end coating treatments in reducing wood cracks varied according to wood species and the coating materials. Wood statues of sengon experienced more rigorous cracks than those of mindi. The use of wood adhesives as coating materials gave a helter cracking protection than the wood filling agents. Although polyvinyl acetate could not greatly minimize the physical deformation of belalu, it revealed to be the most effective coating material for cracking prevention.

KETEGUHAN LENTUR STATIS BALOK LAMINA DARI TIGA JENIS KAYU LIMBAH PEMBALAKAN HUTAN TANAMAN Jamaludin Malik; Adi Santoso
Jurnal Penelitian Hasil Hutan Vol 23, No 5 (2005): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Penelitian ini bertujuan untuk mengetahui sifat keteguhan lentur dan patah (MOE dan MOR) balok lamina dari kayu limbah pembalakan hutan tanaman dengan menggunakan tiga jenis perekat yaitu lignin resorsinol formaldehida (LRF), tanin resorsinol formaldehida (TRF) dan phenol resorsinol formaldehida (PRF). Kayu lamina dibuat dari komposisi tiga jenis kayu yaitu tusam (Pinus merkusii), damar (Agathis sp.). dan gmelina (Gmelina arborea).Hasil penelitian menunjukkan bahwa masa kempa 8 jam menghasilkan nilai MOE lebih besar sedangkan masa kempa 12 jam meningkatkan MOR. Komposisi jenis terbaik dari kayu lamina berdasarkan MOE dan MOR-nya adalah agatis-agatis-agatis pada masa kempa 8 jam. Ketiga jenis kayu limbah pembalakan memiliki sifat perekatan yang baik dan cocok dibuat produk kayu rekonstitusi khususnya kayu lamina tipe eksterior untuk keperluan struktural.

PENGAWETAN LIMA BELAS JENIS KAYU SECARA RENDAMAN PANAS-DINGIN DENGAN BAHAN PENGAWET BFCA Sasa Abdurrohim; Barly Barly
Jurnal Penelitian Hasil Hutan Vol 10, No 2 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Wood samples of 15 species measuring 5 x 5 x 30 cm were treated with 5 percent of BFCA preservative by hot and cold soaking. Hot soaking period was respectiuely 1 hour, 3 houn and 5 hours, with temperature range of 65ᵒC - 70ᵒ C, followed by cold soaking for 24 hours. The test result of experiment, after taking both retention and penetration requirements into consideration for wood uses under roof, and in the open air both without ground contact, showed that nine Wood species could be satisfactorily treated under the experimental conditions. However, it is important to note that one of the nine species, i.e. benuang (Octomeles sumatrana) fulfilled the requirements for wood usage under the roof only without ground contact. The preservation schedule proposed for nine wood species is also presented in this paper.

ARANG AKTIF SERBUK GERGAJI KAYU SEBAGAI BAHAN ADSORBEN PADA PEMURNIAN MINYAK GORENG BEKAS Gustan Pari; Dudi Tohir; Mahpudin Mahpudin; Januar Ferry
Jurnal Penelitian Hasil Hutan Vol 24, No 4 (2006): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Tulisan ini mengemukakan hasil penelitian pembuatan arang aktif dari serbuk gergaji kayu dengan proses aktivasi kombinasi antara cara kimia dan fisika. Tujuan dari penelitian ini adalah untuk mengetahui 1) Pengaruh konsentrasi asam fosfat sebagai bahan pengaktif kimia, 2) Pengaruh suhu dan lama waktu aktivasi terhadap mutu arang aktif dan 3) Pengaruh penambahan arang aktif terhadap mutu minyak goreng bekas. Sebelum dibuat arang aktif, terlebih dahulu serbuk gergaji kayu dibuat arang dengan menggunakan tungku semi kontinyu pada suhu 300OC. Arang yang dihasilkan selanjutnya direndam dalam larutan asam fosfat dengan konsentrasi 5,0 dan 10% selama 24 jam. Proses aktivasi dilakukan di dalam retort yang terbuat dari besi tahan karat pada suhu 800, 850, 900OC dengan lama waktu aktivasi masing-masing 30, 60 dan 90 menit. Dalam penelitian ini digunakan larutan (NH4)2CO30,20% sebagai gas pengoksid.Hasil penelitian menunjukkan bahwa kualitas arang aktif serbuk gergaji kayu yang terbaik adalah arang aktif yang direndam asam fosfat 5% pada suhu 900oC selama 30 menit. Pada proses aktivasi tersebut diperoleh rendemen arang aktif sebesar 72,71%, dan arang aktif yang dihasilkan mengandung kadar air 4,23%, kadar zat terbang 5,84%, kadar abu 42,53%, kadar karbon terikat 52,25%, daya serap terhadap kloroform 24,86%, benzena 16,97% dan daya serap terhadap yodium sebesar 668,63 mg/g. Nilai daya serap ini memenuhi syarat Standar Amerika dan arang aktif yang dihasilkan permukaannya lebih bersifat polar sehingga dapat digunakan untuk menyerap polutan yang juga bersifat polar seperti aldehida. Kualitas minyak goreng bekas menjadi lebih baik setelah ditambahkan dengan arang aktif sebanyak 2,5% yang ditunjukkan dengan menurunnya kandungan asam lemak bebas dan bilangan peroksida masing-masing dari 0,27% menjadi 0,17% dan dari 18,87 menjadi 10,96 meq O2/kg. Sedangkan untuk kecerahan warna mengalami peningkatan dari 13,98 menjadi 16,02%. Mutu minyak goreng ini terutama asam lemak bebas dan bilangan perokisda memenuhi syarat minyak goreng yang ditetapkan SNI.

PERBANDINGAN PERSENTASE VOLUME TERAS KAYU JATI CEPAT TUMBUH DAN KONVENSIONAL UMUR 7 TAHUN ASAL PENAJAM, KALIMANTAN TIMUR Krisdianto Krisdianto; Ginuk Sumarni
Jurnal Penelitian Hasil Hutan Vol 24, No 5 (2006): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Kayu jati (Tectona grandis L.f.) telah dikenal sebagai bahan baku mebel dan konstruksi dengan kualitas tinggi. Jati cepat tumbuh atau dikenal dengan nama dagang 'Jati super', 'Jati unggul', 'Jati prima' atau 'Jati emas' merupakan tanaman jati yang dikembangkan melalui kultur jaringan dan bertujuan menambah pasokan bahan baku kayu jati. Sedangkan kayu jati konvensional merupakan tanaman yang dikembangkan melalui perkecambahan biji. Informasi mengenai kualitas kayu jati cepat tumbuh belum diketahui. Salah satu parameter kualitas kayu jati dapat dilihat dari persentase kayu terasnya dalam batang. Penelitian ini bertujuan membandingkan persentase teras kayu jati super dan konvensional pada umur dan lokasi yang sama. Hasil pengamatan menunjukkan bahwa pada umur 7 tahun, kayu teras telah terbentuk pada seluruh lempengan kayu jati super maupun konvensional dari bagian ujung, tengah dan pangkal. Persentase kayu teras jati super rata-rata 39,6%, lebih besar dari jati konvensional 20,3%. Berdasarkan persentase kayu terasnya kayu jati konvensional lebih baik dari jati super. Namun, parameter kualitas kayu yang lain juga harus diperhatikan seperti kualitas serat, kandungan bahan kimia dan keawetan alaminya. Berdasarkan SNI 01-5007.1-2003, batang kayu jati super dan konvensional pada umur 7 tahun dapat masuk dalam kriteria kayu bulat kecil (KBK, A.I.).

SIFAT ARANG AKTIF DARI TEMPURUNG KEMIRI Djeni Hendra; Saptadi Darmawan
Jurnal Penelitian Hasil Hutan Vol 25, No 4 (2007): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Kemiri merupakan hasil hutan bukan kayu (HHBK) potensial dengan beragam kegunaan, diantaranya yang belum banyak disentuh adalah pemanfaatan tempurung kemiri. Pada umumnya masyarakat menjadikan tempurung kerniri sebagai limbah dan hanya sebagian kecil saja yang memanfaatkannya sebagai pengeras jalan dan lantai rumah. Tempurung kemiri sebenarnya mempunyai prospek sebagai bahan baku pada pembuatan arang aktif. Tujuan penelitian ini adalah untuk mengetahui sifat dan kualitas arang aktif dari tempurung kemiri. Tempurung kemiri dibuat arang menggunakan tungku dari drum bekas pakai kapasitas 200 liter yang dimodifikasi, kemudian arang yang dihasilkan direndam dalarn larutan H3PO4 pada konsentrasi 2,5%, 5,0% dan 7,5% selama 24 jam. Selanjutnya di-panaskan dalam retort pada suhu 750°C dan 800ºC. Apabila suhu telah dicapai maka dialirkan uap air panas selama 60 dan 90 menit pada tekanan 4 bar dengan laju alir 1,5 - 2,5 ml/ menit yang sebelumnya melewati ruang pemanas pada suhu 400°C. Arang yang direndam dengan menggunakan larutan H3PO4 2,5%, 5% dan 7,5%, pada suhu 750°C dan 800°C yang dialiri uap air panas selama 90 menit telah menghasilkan daya serap terhadap yodium di atas 750 mg/g (SNI), kecuali pada suhu 750°C yang direndam dalam larutan H3PO4 7,5%. Kondisi optimum pembuatan arang aktif dihasilkan pada suhu 750°C, direndam dalam larutan H3PO4 2,5% dengan waktu aktivasi selama 90 menit.

PENENTUAN PENUMPULAN PISAU PADA PERMUKAAN KAYU Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol 12, No 2 (1994): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The wear of wood cutting tools is, generally, the process which makes a usable tool unfit for continued use. The replacement of the worn cutter either by reconditioning or substitution of a new one represents a necessary cost which can be minimized by controlling tool wear. Numerous studies have been conducted through direct observations on the cutting edge using a variety of photographic methods. Such observations are quite complicated and can hardly be introduced to industrial practices. This study is aimed to explore a possibility of determining cutting tool wear indirectly through the work piece observation. It is based on assumption that knife blunting has a direct bearing on the quality of the finished product, i.e., changing the geometry of cutting marks on the wood surface.Boards of two wood species, rasamala and mangium, were seasoned to air-dry condition and planed using new sharp knives at one feed speed of 30 m/min. Observations were carried out sequentially at 5 planing distances, i.e., 10, 20, 40, 80 and 160 m. Cutting marks geometry on the wood surface was distinguished by rubbing the surface gently with a carbon paper. Measurements of cutting marks and the width of cutting peak were undertaken using a digital calliper. Results showed that values of cutting marks and width of cutting peaks markedly increased with increasing planing distances. Blunting process was significantly affected by wood species. Knives used for planing rasamala boards blunted quicker than those used for mangium. These, to some extend, revealed a possible use of cutting marks structure on wood surface for determining the wear of cutting edge.

ANALISIS TEKNIS DAN EKONOMIS PRODUKSI ARANG AKTIF INDUSTRI PEDESAAN Tjutju Nurhayati; Saepuloh Saepuloh; Sylviani Sylviani
Jurnal Penelitian Hasil Hutan Vol 20, No 5 (2002): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The objectives of this trial was to produce activated charcoal from 5 raw material species which are abundantly potential. The production was conducted in an experimentally designed kiln, expectedly appropriate as a manufacturing prototype of activated charcoal for the inherent endeavors or small-scale village industries, which would be feasible technically, economically, and environmentally. The parameters related to the technical analysis covered the manufacture of charcoal from three wood species (bakau, mangium, and tusam) and coconut shell; analysis on raw material for such charcoal and on the mixed charcoal from the market; activation process using water vapor and air at consecutively 0.25 bar and 4-5 atmospheric pressures, with the temperature as high as 705-805°C; and analysis on iod number for the quality of activated charcoal. For economic evaluation, the inherent parameters covered production cost, activated charcoal price, and other related aspects. For the comparative assessments were used activated charcoals from sawdust and coconut shell from industry. The results are as follows:The yields of resulting activated charcoal were varying, i.e 77% from mangrove charcoal as the highest, followed in decreasing order at 73% from coconut shell charcoal, 66% from both mangium and mixed charcoal, until 58% from tusam charcoal as the lowest. lod number of activated charcoal ranged between 472-722 mg/g, with the one from coconut shell charcoal as the highest and the mangrove charcoal as the lowest. The increase of iod number in coconut shell activated charcoal was the highest with six times higher in comparison to the one in its regular charcoal, followed in decreasing order by those mixed charcoal, tusam charcoal. until mangrove charcoal as well as mangium charcoal as the lowest ( i.e consecutively 3.98 times, 3.39 times and 2.45 limes).Compared to the Indonesian requirement standard for activated charcoal, such production trial of activated charcoal seemed to be insatis factory. This is caused by overall iod numbers which were still below 750 mg/g. However, the iod number in activated charcoal from coconut shell in this trial was still higher than the one in the corresponding activated charcoal produced commercial industries (i.e 722 mg/g). Meanwhile, the iod number in activated charcoal from mixed charcoal (654 mg/g) was lower, but still higher than those from tusam and mangium.The retort for the production trial activated charcoal was constructed of stainless steel reactor with 120 liter volumetric capacity and capable of producing 10 kg per day, using regular charcoal as raw material and firewood as a fuel. This retort was designed as a prototype model for the production of activated charcoal for small-scale industries. The method of production expectedly will not bring about enviromental impacts, since the generated vapour/gas during the activation was immediately incinerated in the fuelwood fire pol.The analysis revealed that the production using coconut shell charcoal as raw material in the retort with design capacity of 250 kg per month and 5 years technical life could be sold at Rp 6,000.- per kg of activated charcoal and therefore could bring in some net benefit at 5.5%. Activated charcoal production using mixed wood charcoal did not give significant any benefit. The benefit of activated charcoal production using coconut shell in that period would be even higher.

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(1994): Jurnal Penelitian Hasil Hutan Vol 11, No 8 (1993): Jurnal Penelitian Hasil Hutan Vol 11, No 7 (1993): Jurnal Penelitian Hasil Hutan Vol 11, No 6 (1993): Jurnal Penelitian Hasil Hutan Vol 11, No 5 (1993): Jurnal Penelitian Hasil Hutan Vol 11, No 4 (1993): Jurnal Penelitian Hasil Hutan Vol 11, No 3 (1993): Jurnal Penelitian Hasil Hutan Vol 11, No 2 (1993): Jurnal Penelitian Hasil Hutan Vol 11, No 1 (1993): Jurnal Penelitian Hasil Hutan Vol 10, No 6 (1992): Jurnal Penelitian Hasil Hutan Vol 10, No 5 (1992): Jurnal Penelitian Hasil Hutan Vol 10, No 4 (1992): Jurnal Penelitian Hasil Hutan Vol 10, No 3 (1992): Jurnal Penelitian Hasil Hutan Vol 10, No 2 (1992): Jurnal Penelitian Hasil Hutan Vol 10, No 1 (1992): Jurnal Penelitian Hasil Hutan Vol 9, No 7 (1991): Jurnal Penelitian Hasil Hutan Vol 9, No 6 (1991): Jurnal Penelitian Hasil Hutan Vol 9, No 5 (1991): Jurnal Penelitian Hasil Hutan Vol 9, No 4 (1991): Jurnal Penelitian Hasil Hutan Vol 9, No 3 (1991): Jurnal Penelitian Hasil Hutan Vol 9, No 2 (1991): Jurnal Penelitian Hasil Hutan Vol 9, No 1 (1991): Jurnal Penelitian Hasil Hutan Vol 8, No 6 (1991): Jurnal Penelitian Hasil Hutan Vol 8, No 5 (1991): Jurnal Penelitian Hasil Hutan Vol 8, No 4 (1990): Jurnal Penelitian Hasil Hutan Vol 8, No 3 (1990): Jurnal Penelitian Hasil Hutan Vol 8, No 2 (1990): Jurnal Penelitian Hasil Hutan Vol 8, No 1 (1990): Jurnal Penelitian Hasil Hutan Vol 7, No 4 (1990): Jurnal Penelitian Hasil Hutan Vol 7, No 3 (1990): Jurnal Penelitian Hasil Hutan Vol 7, No 2 (1990): Jurnal Penelitian Hasil Hutan Vol 7, No 1 (1990): Jurnal Penelitian Hasil Hutan Vol 6, No 8 (1990): Jurnal Penelitian Hasil Hutan Vol 6, No 7 (1990): Jurnal Penelitian Hasil Hutan Vol 6, No 6 (1989): Jurnal Penelitian Hasil Hutan Vol 6, No 5 (1989): Jurnal Penelitian Hasil Hutan Vol 6, No 4 (1989): Jurnal Penelitian Hasil Hutan Vol 6, No 3 (1989): Jurnal Penelitian Hasil Hutan Vol 6, No 2 (1989): Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): Jurnal Penelitian Hasil 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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