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SIFAT PAPAN PARTIKEL DARI LIMBAH EKSPLOITASI Rozak Memed; I M Sulastiningsih
Jurnal Penelitian Hasil Hutan Vol 3, No 1 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2683.947 KB) | DOI: 10.20886/jphh.1986.3.1.38-41

Abstract

The result of a study on the properties of particle board made from logging waste is reported in this paper. The wood species used in the study as raw material for particle board are meranti (Shorea sp.), ramin (Gonystylus bancanus Kurz.) and combination  of the two species. The result shows that wood species and particle size has a significant effect on the water absorption and thicknessswelling of particle board. Bending strength  (MOR) of particle board is only affected  by wood species, while Modulus  of elasticity, internal bond and shear strength are not affected by wood species and particle size. In general the physical and mechanical properties  of particle  board studied  meet the FAO standard for low density particle board.
Serangan awal kumbang ambrosia Platypus trepanatus Pada dolok kayu ramin P Sukartana
Jurnal Penelitian Hasil Hutan Vol 3, No 2 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14302.442 KB) | DOI: 10.20886/jphh.1986.3.2.25-27

Abstract

Dolok segar kayu ramin  (Gonystylus bancanus Kurz.)  sangat peka terhadap serangan kumbang ambrosia  Platypus trepanatus  (Chapman). Serangan awal kumbang ini terjadi sejak hari pertama atau bahkan mungkin sekali hanya beberapa jam   saja setelah pohon ramin ditebang.Lama  serangan  awal dipengaruhi oleh intensitas serangannya. Serangan awal yang  hebat akan lebih cepat terhenti daripada serangan yang  ringan.
ANALISIS TEKNIS DAN EKONOMIS PRODUKSI TERPADU ARANG DAN CUKA KAYU DARI TIGA JENIS KAYU Tjutju Nurhayati; Sylviani Sylviani; Mahpudin Mahpudin
Jurnal Penelitian Hasil Hutan Vol 21, No 2 (2003): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (12548.742 KB) | DOI: 10.20886/jphh.2003.21.2.154-166

Abstract

Analysis on the integrated production of charcoal and  wood vinegarhas  been conducted using the raw materials  of three wood species, i.e. mangrove (Bruguera sp.), mangium (Acacia mangium), and tusam (Pinus merkusii). As such, those three were each carbonized into charcoal through a direct burning  in a dome kiln with 2 m3 capacity;  and concurrently,  the distillation  through  the cooling of.the generated  gas/vapor fraction  was conducted to collect the wood vinegar. The resulting charcoal werefurther treated  either with or without purification process. To evaluate the qualities of the two products (i.e. charcoal and wood vinegar), the physico-chemical  and economic analyses were examined. Economic analysis covered the collection of data/information on purchasing prices of the equipment.  material-procuring cost for  the kiln, kiln-erection cost. production cost, cost of procuring auxiliary matters,  charcoal and wood vinegar prices,  and others, followed by their assessment. Results of the analysis  were as follows:Integrated production  of charcoal and the one of wood vinegar turned out to be the best with respect to their  technical  aspects and physico-chemical properties was from  the raw material of mangrove  wood species.  In this regard, the yield of charcoal and wood vinegar was the highest. Likewise, the qualities  of the charcoal could correspond to usage standard  of charcoal for iron ore. Also, the qualities of the wood vinegar could meet the Japan Standard Requirement.The implementation of purification treatment on the resulting charcoal could decrease the volatile matter content, and increase fixed carbon content and  calorific  value  without   affecting  the production of  wood  vinegar. As  such,   the  volatile  matter  contents  in mangium charcoal decreased from 27.09 percent  to  17.35   percent,  and  in tusam charcoal from 33.18  percent to 24. 79 percent.Productions of charcoal and wood vinegar for one m3  of wood were in the range of 181- 217 kg and 169 -  205 kg, respectively for mangrove wood;  110  -121 kg and 121 -  125  kg, respectively formangium wood; and 111-121 kg and 141  kg, respectively for tusam wood.Production of charcoal which is in  integration  with the one of wood vinegar can gain  a significant benefit. Such benefit can be achieved after 5 years of wood vinegar production, i.e.  82.6 percent per year from  mangrove wood, and  mangium as well as tusam wood.   Conversely, the production of  wood vinegar in integration with the one of charcoal can gain additional benefit, i.e. 39.7 percent per year from mangrove wood, and 39.9 percent per-year from mangium as well-as-tusam wood. The benefit per year of such integrated  production in the sixth year will be even greater, since the interest payment and loan can be ultimately fulfilled. All  the investment of the factory with implements an integrated production-of  charcoal and wood vinegar can be returned in one year and 3 months.
PERBANDINGAN PENYARADAN KAYU DENGAN SISTIM MANUAL DAN EKSAVATOR DI HUTAN RAWA BAGIAN Ill : KAJIAN TEKNIS, EKONOMIS DAN EKOLOGIS Wesman Endom; Zakaria Basari
Jurnal Penelitian Hasil Hutan Vol 19, No 1 (2001): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6432.656 KB) | DOI: 10.20886/jphh.2001.19.1.19-39

Abstract

Modified excavator is one of heavy equipment that might be useful and environmentally friendly to be used for operational logging extraction especially in swampforest. It is therefore besides convenient and powerful, it is also helpful as an effective alternative in anticipating the weakness of manual system which is called "kuda-kuda'.Related to the case, a study by implementing both manual system and excavator was done in a forest concession, i.e. PT. Inti Prona, at cutting block covering the 1997/1998 area that located under management of Sub Forest District Dumai, Riau Province. The study covered aspects of extraction productivity, extraction cost, and logging impact on the possible damage of residual forest stands due to the implementation of both systems.The result showed that the average of logs extraction productivity was 16.80 m3.hm per hour. With respect to the ecological impacts, it was found that residual forestst and damage occurred at 17.29% per ha (at pole stage) and 17.17% per ha (at tree stage). Further, operation cost hauling was assessed at Rp 5,600 per m3 of extracted log.Meanwhile, manual log extraction revealed productivity at 2,46 m3.hm per hour. Ecological impact due to constructionsof manual road extraction system and landing site (TPn) was the occurrence of damage to pole and tree stages at 28,25% and 34,33%, respectively. In the same occasion, cost of manual extraction was about Rp 23.000 per m3.Keywords : excavator, productivity, damage, tree, poles and extraction cost
PENGAWETAN KAYU KERUING UNTUK MENARA PENDINGIN (Preservation of keruing woodfor cooling tower) Barly Barly; Abdurahim Martawijaya; Pipin Permadi
Jurnal Penelitian Hasil Hutan Vol 11, No 8 (1993): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8597.099 KB) | DOI: 10.20886/jphh.1993.11.8.303-307

Abstract

The utiliization of wood for cooling tower in Indonesia tends to increase and has become more important. Wood as material for cooling tower has been applied commercially in several developed countries such as New Zealand,USA and Japan. While in indonesia it has just been started in 1981 after the establishment of Kamojang Geothermal Power Station Unit 1. This paper deals with some experience in treating keruing wood (Dipterocarpus spp.) as material for cooling tower by vacuum-pressure impregnation. The result shows that keruing is easy to treat. In other to meet the retention of 24 kg/m3, the concentration of the solution must be at least 6.25 percent and absortion of 384 liters of preservative per cu.m.
SIFAT PEMESINAN 32 JENIS KAYU DARI DAERAH JAWA BARAT DAN NUSA TENGGARA TIMUR Osly Rachman
Jurnal Penelitian Hasil Hutan Vol 5, No 4 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3991.057 KB) | DOI: 10.20886/jphh.1988.5.4.216-225

Abstract

 The paper presents  a  test result of machining properties  of 32 wood species from  West Java  and East of Nusa  Tenggara East. The air dried samples were tested according  to  the ASTM  D­1666/64 standard  that was modified  according  to the Forest Products Research Institute  Report  No. 160  (1982).   In most  of the species 25 or more samples were available  for  test.  The machining  properties   tested  included  planning,  shaping, boring,  turning  and sanding.The  result  reveals  that  eighteen  wood  species have good  to  very good machining   properties, five  species  have  very good  machining  properties namely gintung, pongokan,    rasamala, melur,  tanjung  and leda  II.The  other  species are  good  or fair in some  properties  and poor  or very poor  in other.  The species with poor  or very poor   machining  properties   are  bareuhbeuy, hantap heulang  and  leda   III.
OPrlMALISASI EKSPOR KAYU LAPIS INDONESIA: (Studi Kasus Pabrik Kayu Lapis di Propinsi Sumatra Selatan) Satria Astana; Hariyatno Dwiprabowo; Kirsfianti Linda
Jurnal Penelitian Hasil Hutan Vol 8, No 5 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6076.421 KB) | DOI: 10.20886/jphh.1991.8.5.167-180

Abstract

•Of the forat  pfoductt in •rndonei~,. plywood haa an •im~rlant  '1olitio1'•in mee~•the  need for•t~   f~reiln, ~• By the end of 1986. the contribution of plywood to the tQ.tal export value of forat  pro~ucta ~the     brggest.It accounted for 61. 40~  In the (Qllowingyea.r., the a.,erage gr:owthper. ye~r.of  the•pbwood  expor.t volume was 54.98_%. .          .                                                                                   : The a.im •of  thia atudy   ~  to •know   how far   the a~tual value• of. the plywood  export  aB the fore'!n exchange •Im reached the optimum.  To achieve the aim, two modelB (Model• I and Model II) of linier 11rograming were conatrueted. In •    thia caae, the study   waa conducted on the plywood  mill• in South Sumatra Province.                •                                                                                                                    •The rault   of  the study  revealB that the actual ualue of the plywood  export of thia region has not been optimum. The actual value of the export per month  waa USI 3 342 778 or USI 286. 1/m3. Meanwhile the export ~ue    per month based on the optimizing model of Model I and Model II iB  UBI 4 297 269 or US$'824.  9/m3 and UBI 4 537 673 or UBI 343. 2/m3  respectively.                                                                                                         To reach the optimum  value of export the market area and the export volume• need to be reallocated;tJn increasein volume export  by 1.35%  (Model I) or by  1.04'*'  (Model II) can cause a significant incre•e  in the export value comj'JtJl"ed with the ualue• gained by  the mill.Since the demand of  the Indonesian plywood  export iB prone to increaae, the reault of the optimizing modeZ. can be implemented. However, the optimizing reault of Model II iB preferred particularly with regard to the efficiency of f!&e forest re1ourceuse.
SIFAT PENGKARATAN LIMA JENIS KAYU YANG DISIMPAN DI TEMPAT TERBUKA TERHADAP BESI Djarwanto Djarwanto
Jurnal Penelitian Hasil Hutan Vol 29, No 2 (2011): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2444.907 KB) | DOI: 10.20886/jphh.2011.29.2.104-114

Abstract

Lima jenis kayu yang berasal dari Kabupaten Ciamis dan Tasikmalaya yaitu Litsea roxburghii Hassk. (tangkalak), Erythrina fusca Lour. (cangkring), Melaleuca cajuputi Powell (kayu putih), Zanthoxylum rhetsa D.C. (ki tanah) and Sterculia cordata (Blume) BL. (huru leueur) di uji sifat pengkaratannya terhadap sekrup logam di tempat terbuka. Contoh uji diambil dari bagian tepi (A), tengah (B), dan dalam (C) dolok. Sifat pengkaratan ditunjukkan dari besarnya kehilangan berat sekrup. Hasilnya menunjukkan bahwa pengkaratan besi terjadi pada semua jenis kayu yang diuji. Pelunturan warna karat sekrup telah terjadi pada umur 2 minggu setelah pemasangan. Tingkat pengkaratan ditunjukkan oleh variasi besarnya kehilangan berat sekrup. Sifat korosif logam yang besar umumnya terjadi pada kayu putih. Kehilangan berat sekrup tertinggi didapatkan pada kayu putih yang berasal dari pohon P-II bagian tepi (A) yaitu 5,96%. Sedangkan kehilangan berat sekrup terendah terjadi pada kayu huru leueur dari pohon P-II bagian tepi (A) yaitu 0.04%.
KUALITAS POLITUR ORGANIK DARI EKSTRAK KAYU JATI DAN SIRLAK Jamal Balfas
Jurnal Penelitian Hasil Hutan Vol 35, No 1 (2017): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1618.296 KB) | DOI: 10.20886/jphh.2017.35.1.53-71

Abstract

Penggunaan bahan finishing kayu dewasa ini dikuasai oleh bahan finishing dengan pelarut mineral, seperti melamin dan nitroselulosa. Meskipun bahan finishing ini dapat memberikan kualitas finishing yang baik, awet serta harga yang terjangkau, namun kelompok bahan finishing ini melepas banyak polutan, sehingga dapat merusak lingkungan dan berbahaya bagi kesehatan. Dalam penelitian ini dilakukan eksplorasi penggunaan bahan alternatif berupa ekstrak kayu jati yang dicampur dengan sirlak untuk produksi pewarnaan kayu atau lapisan atas. Performa bahan finishing alternatif diuji secara fisis, mekanis dan kimia pada kayu tusam dan karet, serta dibandingkan dengan performa bahan finishing komersial, yaitu melamin formaldehida (MF) dan nitroselulosa (NS). Contoh uji kedua jenis kayu direndam dalam larutan bahan finishing kemudian dikeringkan. Perubahan berat dan dimensi contoh uji akibat rendaman ditentukan pada kondisi basah dan kering. Hasil penelitian menunjukkan bahwa pertambahan berat dan perubahan dimensi akibat rendaman beragam menurut jenis kayu, orientasi serat dan jenis bahan finishing yang digunakan. Contoh kayu tusam mengalami perubahan berat dan dimensi lebih besar daripada kayu karet. Semua formula finishing organik mampu melindungi kayu dari intrusi air, namun tidak sebaik kelompok komersial MF dan NS. Formula lapisan atas ekstrak jati dan sirlak memiliki daya tahan terhadap larutan kimia dan ketahanan gores lebih rendah daripada MF dan NS. Namun demikian, formula pewarnaan kayu ekstrak jati dan sirlak memiliki nilai warna lebih baik daripada wood stain komersil. 
PENGOLAHAN LEMAK TENGKAWANG DENGAN CARA PENGEMPAAN HIDRAULIK Bambang Wiyono
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 | Full PDF (1354.258 KB) | DOI: 10.20886/jphh.1995.13.6.215-221

Abstract

Observations in this research were conducted in the IIIipe fat industry and in the laboratory. The observation in the fat industry was to get a clear discription of the fat processing of IIIipe nut, whilts in the laboratory was to study the extraction process of IIIipe fat with a hydraulic pressing technique. The pressure were conducted at several pressing levels: 25, 50, and 75 kg/cm2, at a pressing temperature of 50-60 oC for 20 minutes respectively.To produce IIIipe fats, the industry applies a combination technique of hydraulic pressure and hexane extraction. The yield of fat with this combination technique is around 40-50 %. However, the results of experiment in the laboratory showed that at an 50 kg/cm2 pressure produced yield of fat with a high quality indicated by the highest value of iodine number.

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