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INDONESIA
Jurnal Penelitian Hasil Hutan
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
 101   102   103   104   105 
PENGARUH KERAPATAN KAYU, TEKANAN PENGEMPAAN DAN JENIS PEREKAT TERHADAP SIFAT BRIKET KAYU R Sudradjat
Jurnal Penelitian Hasil Hutan Vol 1, No 1 (1984): 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.1984.1.1.11-16

Abstract

            Chips of eight wood species were milled and briquette with varying pressure. Cassava flour and molasse were used as binders.            Briquette density ranged from 0,875 to 1.037 g/cm3; compressive strength from 216.32 to 604.12 kg/cm2; calorific value from 4318 to 4668 cal./g, moisture content from 3.58 to 6.12%, and ash content from 1.61 to 3.91%.             Higher density woods produced higher density briquette but lower in moisture and ash contents. Briquettes bonded with cassava flour were higher in density and ash content but lower in compressive strength and calorific value.             The relationship between pressing pressure and briquette density can be expressed in a linear regression equation. The effect of pressing pressure on compressive strength follows a quadratic regression equation for briquettes bonded with molasse.          
SIFAT VENIR DAN KAYU LAPIS 8 JENIS KAYU DARI SULAWESI TENGAH M I Jslrandar; Suwandi Kliwon; Paribotro Sutigno
Jurnal Penelitian Hasil Hutan Vol 8, No 4 (1990): 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.1990.8.4.150 - 156

Abstract

A muly  reault on• the suitability  of 8 wood 1peciesfrom Central Sulawesia  raw  material-for veneeri and plywood  iB re~rted   in ~hiB paper. 1'ae •tudy cons!ited of log peeling characteristic, veneerpropgty 'and  tome phy~cal/mechanical AU  of  ita.  lo,. Tram wood  speciu  could  be peeled in cold c0ndition, producing 0.9 mm and 1.6  mm veneer at propertitia  of plywood  (tripl•     and multiplaa cuffln6 angle between 910  -   92080'.                      •                                                       -                                                                            .7'le average111rinkage of  veneer iB   6.27%,  with  a minimum of 4.98'fo  (Nyatoh) and maximum of 8.14%  (Palapi). Veneer •welling from oven_-dry  to aiNlry  condition  varied between 2.lB'fo   (Nyatoh) and 8.60%  (Durian) with an avera.e-    2.81'-'.                                                                                             '7'1, bondi!JI atrerwth of _p_'f¥_~~     fro_~-~   woo4_•!!1!'*-• (76_'fo)  ti>ntOrms with the Indonaian ttandard for  type IIor ""*" rniatant,  6 wood specia  (62,6'fo) with Japanue standard and 4 specia  (60!1>) with German 1tandard•a:Peciflc •fnJvlty   of  multiplex  ;.  higher than triplex.  Some. mechanical propertie• of multiple% are higher than
EKSTRAKSI LEMAK DARI BIJI TENGKAWANG TUNGKUL (SHOREA STENOPTERA BURCK) DENGAN BEBERAPA PELARUT ORGANIK Bambang Wiyono
Jurnal Penelitian Hasil Hutan Vol 6, No 2 (1989): 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.1989.6.2.121-124

Abstract

The  purpose   of  this  research   is  to  study   the  effect  of  several  organic  solvents   and  storage  time  on fat  content, acidify,   and  free  fatty acid  content   of  Illipe  nut  hernels   (S.   stenoptera    Burck).  The  treatment   effect   was analysed  by using a randomized  complete   block  design.The  result  indicated   that  storage  time   reduced  moisture   content   of  Illipe  nut  kernels   (S. stenoptera   Burck),  but on the  contrary   the  storage  treatment    tended    to  increased  the  ash  content.   Extended  storage  time  decreased  fat  content significantly.   Acetone    solvent   extraction   produced   highly  significantly    effect   on  fat  and  free  fatty  acid  content    than that  of  the  other  solvents.   Biochemical  activity   of  lllipe   nut   hernels  (S.   stenoptera  Burck)  degraded  the quality,  and  the rate of  degradation   was influenced   by  humidity   and temperature.   Therefore,     to  maintain.    good  kernels  quality,   optimum storage  condition  is desired.
PEMBUATAN ARANG AKTIF DARI KAYU ACACIA MANGIUM DENGAN GASIFIKASI "FLUIDIZED BED" Djeni Hendra; Gustan Pari
Jurnal Penelitian Hasil Hutan Vol 13, No 6 (1995): 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.1995.13.6.252-257

Abstract

Experimental study on activated charcoal from Acacia mangium by using "fluidized bed" gasification is presented in this paper. Tire result shows that yield ranges from 14. 79 to 25. 03 %, moisture content from 9.17 to 14.42 %, ash content from 2.36 to 2.94, volatile matter from 7.44 to 9. 79 %, fixed carbon from 73.28 to 80. 71 %. adsorptive capacity of benzene from 1.38 to 18.56 % and adsorptive iodine from 511.37 to 961.87 %.Based on adsorptive capacity of iodine, the maximum activation reaction time is 45 minutes. At this time the adsorptive of iodine is 961.87 which meet American and Indonesian standard.
PEMANFAATAN ASAP CAIR KAYU PINUS (Pinus merkusii Jungh. & de Vriese) SEBAGAI KOAGULAN GETAH KARET Santiyo Wibowo; Gustan Pari; Raden Esa Pangersa Gusti
Jurnal Penelitian Hasil Hutan Vol 34, No 3 (2016): 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.2016.34.3.199-205

Abstract

Smoke liquid is a liquid obtained from smoke condensation during charcoal firing process. The main content of the smoke liquid is acetic acid, hence, can be used as an alternative latex coagulant. Acid in vinegar can reduce the pH of latex and  cause the latex to coagulate rapidly. This paper determines effectiveness of using  smoke liquid as a latex coagulant and characteristics of the treated latex. The smoke liquid  in this study was derived from pine wood. The smoke liquid solutions consisted of  the crude smoke liquid and the diluted solution in various concentrations of 5, 10, 15 and 20%. The smoke liquid solution was then each poured into a container of  latex. Testing was undergone by observing latex coagulating time, coagulate condition, texture, color, odor and homogenity. The most effective smoke liquid which produced the best latex based on its performances was then taken for further testing of physico-chemical properties which included dry rubber content, plasticity retention index (PRI), initial plasticity (Po), final plasticity (Pa), dirt content, ash content, volatile matter content (Vm), and nitrogen content. Results were then compared with the conventional use of formic acid as a control coagulant. The result showed that the crude and distillate smoke liquid solutions with concentration of  10% produced the best coagulantperformances than the other solutions. Rubber latex treated with the crude smoke liquid produced the best physico-chemical properties and could meet requirements of the Indonesian National Standard (SNI) for Rubber Quality.
PENGARUH SUHU DAN TEKANAN EKSTRAKSI METODE FLUIDA SUPERKRITIS C02 TERHADADAP KADAR SANTALOL KAYU CENDANA Bambang Wiyono; Chilwan Panji; Silvia Silvia; Poedji Hastoeti
Jurnal Penelitian Hasil Hutan Vol 18, No 1 (2000): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2000.18.1.10-18

Abstract

Santalol merupakan senyawa utama dari minyak cendana yang dapat dijadikan tolok ukur untuk mengetahui kualitas kayu cendana. Semakin tinggi kadar santalol, semakin tinggi kualitas kayu tersebut. Salah satu altematif untuk mengevaluasi kualitas kayu cendana dari pohon yang masih hidup dapat diterapkan metode ekstraksi fluida superkritis CO2 yang dikombinasikan dengan analisis kromatografigas. Metode ini hanya memerlukan pengambilan contoh kayu yang sangat kecil yang dapat diperoleh dari pengeboran pohon tersebut.Sehubungan dengan hal tersebut, penelitian ini bertujuan untuk mengetahui kondisi perlakuan suhu dan tekanan ekstraksi yang terbaik dengan menggunakan metode fluida superkritis CO2 yang menghasilkan kadar santalol yang maksimal. Proses ekstraksi dengan metode ini dilakukan selama 30 menit dengan variasi suhu 30ºC, 40ºC dan 50ºC; serta dengan variasi tekanan 1100 psi, 1800 psi dan 2000 psi. Kemumian minyak yang dihasilkan dari ekstraksi dianalisis dengan menggunakan kromatografi gas merk Perkin Elmer. Untuk mengetahui pengaruh suhu dan tekanan ekstraksi terhadap rendemen minyak dan kadar santalol dilakukan analisis dengan rancangan acak lengkap faktorial.Hasil penelitian menunjukkan bahwa tekanan hanya berpengaruh nyata terhadap rendemen minyak, tetapi tidak pada kadar santalol. Analisis lebih lanjut menunjukkan bahwa diantara tekanan ekstraksi mempunyai perbedaan yang sangat nyata terhadap rendemen minyak. Selanjutnya, suhu ektraksi dan interaksi antara suhu dan tekanan tidak berpengaruh nyata terhadap rendemen minyak dan kadar santalol. Rendemen minyak yang diperoleh berkisar antara 0,09%-3,57%, sedangkan kadar santalol yang diperoleh berkisar 63,29-82,58%. Kondisi terbaik untuk menghasilkan kadar santalol tertinggi (82,68%) adalah suhu ekstraksi 40ºC dan tekanan ekstraksi 1800 psi dengan waktu ekstraksi 30 menit. Kondisi optimum ini diharapkan dapat digunakan untuk mendeteksi kualitas pohon cendana (Santalum album L.) sebagai dasar untuk menentukan waktu penebangan. 
ANALISIS BIAYA ENERGI PADA BEBERAPA INDUSTRI KAYU LAPIS DI KALIMANTAN TIMUR. Analysis of Energy Cost at Several Plywood Factories in East Kalimantan SYLVIANI SYLVIANI
Jurnal Penelitian Hasil Hutan Vol 11, No 2 (1993): 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.1993.11.2.80-85

Abstract

Several plywood factories in East Kalimantan showed that they use wood waste and diesel fuel for energy sources for power generation and electricity. Five plywood factories surveyed produced wood waste with average of 112,590 cubic m in 1991 and its utilization for energy source amounted to 59,601 cubic m on average, while average consumed diesel fuel was 10,000 litres / month .This study showed that operational cost of power generation on average was Rp 290,394,316 per year in which the cost for fuel was Rp 204,122,020 ( 70 % from total operational cost) while the cost of fuel in the factories that used wood waste was Rp 26,535,863.Besides factories that used wood produced electricilymore, so that average cost / kwh was smaller namely Rp 71.50 / kwh compared with those used diesel, namely Rp 307 / kwh.
PENERAPAN SISTEM MEKANISASI DALAM KEGIATAN PENEBANGAN JATI UNTUK MENGURANGI KETERGANTUNGAN TERBATASNYA PENYEDIAAN TENAGA BLANDONG DI JAWA Maman Mansyur Idris; Soenarno Soenarno
Jurnal Penelitian Hasil Hutan Vol 6, No 8 (1990): 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.1990.6.8.476 - 481

Abstract

Sastrodimedjo, (1975) pointed out that the present trend of wood processing  industry development and formal education of younger  generation  caused some problems,  especially in the sustainabiliy  of forest  worker supply  in Java.Based on this  consideration  an  alternatif   for  most  widely  applied  felling  system,   i.e.  manual  felling  system, needs to  be sought. With  regard to this problem a study  was conducted at three Sub Forest District (RPH), namely Temenggeng, Pasar Sore and Sumberogo in Central Java to compare  3 (three)   felling  systems  in teak forest.The result  of  the  study  revealed  that  the  teak  felling  productivity  averages on 2 years gilrded  teak with  mechanical, manual  and  combination systems applied to flat  terrain  were 2.5359 m3/hour,  0.7128  m3/hour and  0.8186 m3/hour, respectively. But   those on hilly terrain were 1.5540 m3/hour, 0.7374 m3/hour and 0.796 m3/hour,   respectively.   The average cost  of  full  mechanical  felling  system applied to flat  terrain  was Rp 1,586.23/m3,  while  that  of on  hilly  terrain was Rp 2,l  65.93/m3
ANATOMI DAN KUALITAS SERAT LIMA JENIS KAYU KURANG DIKENAL DARI LENGKONG, SUKABUMI Krisdianto Krisdianto
Jurnal Penelitian Hasil Hutan Vol 24, No 3 (2006): 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.2006.24.3.201-218

Abstract

Sumber bahan baku alternatif untuk industri perkayuan nasional saat ini dan masa yang akan datang berasal dari hutan tanaman dan pemanfaatan jenis kayu kurang dikenal. Dalam pemanfaatan kayu kurang dikenal diperlukan informasi struktur anatomi dan kualitas seratnya untuk keperluan pengenalan jenis dan pemanfaatannya.  Untuk keperluan identifikasi, ciri utama dari kelima jenis tersebut adalah :1.  Kayu ki hantap (Sterculia oblongata R.Br.) berwarna kuning keabu-abuan, corak bergaris, dengan lin gkaran tumbuh jelas oleh parenkim pita. Parenkim bentuk sayap, dan difus berkelompok, jari-jari2 ukuran.2.  Kayu ki kuya (Ficus vasculosa Wall. ex Miq.) berwarna kuning cerah, lingkaran tumbuh jelas oleh parenkim pita. Parenkim pita tebal membentuk corak garis-garis putih pada produk kayunya.3. Kayu ki lubang (Calophyllum grandiflorum J.J.S.) berwarna coklat kemerahan dan termasuk dalam kelompok kayu perdagangan bintangur. Pembuluh kayu ki lubang bersusun dalam kelompok radial atau diagonal dan parenkim pita memanjang yang kadang terputus.4. Kayu ki bancet (Turpinia sphaerocarpa Hassk.) berwarna kekuningan, agak lunak. Lingkaran tumbuh kayu ki bancet kurang jelas, pembuluhnya agak banyak dan berukuran agak kecil, jari-jari 2 macam ukuran.5.  Kayu ki bulu (Gironniera subaequalis Planch.) berwarna kuning keputihan dan agak keras. Lingkaran tumbuhnya jelas oleh adanya parenkim pita tipis dan perbedaan ketebalan dinding selnya, jari-jari 2 ukuran.     Serat kelima jenis kayu termasuk dalam kelas kualitas I sebagai bahan baku pulp untuk   kertas. 
PENGARUH PENAMBAHAN UREA DAN MELAMIN PADA PEREKAT UREA FORMALDEHIDA TERHADAP EMISI FORMALDEHIDA DAN KETEGUHAN REKAT TRIPLEKS MERANTI Paribotro Sutigno; Adi Santoso
Jurnal Penelitian Hasil Hutan Vol 13, No 4 (1995): 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.1995.13.4.144-152

Abstract

The problem in using plywood bonded with urea formaldehyde (UF) is formaldehyde emission, especially in a room with limited ventilation. To reduce formaldehyde emission, the glue can be mixed with catching agent. In this paper the effect of urea and melamine as catching agent on formaldehyde emission and on bonding strength of UF bonded plywood made from red meranti (shorea. spp) is discussed.The effect of catching agent type on formaldehyde emission is not significant while the effect of percentage of catching agent is highly significant on formaldehyde emission. The higher percentage of catching agent, the lower formaldehyde emission of plywood.The effect of catching agent type on plywood bonding strength is not significant, but the effect of percentage of catching agent is highly significant. The higher percentage of urea the lower plywood bonding strength, while the higher percentage of melamine and urea-melamine cause the higher plywood bonding strength. To meet formaldehyde emission of 0.165 ug/ml, it is recomended to use 10% urea on the weight basis of liquid UF.

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