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Jurnal Penelitian Hasil Hutan
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Search results for , issue " Vol 21, No 1 (2003): Buletin Penelitian Hasil Hutan" : 3 Documents clear
PRODUKTIVITAS DAN BIAYA ALAT MUAT BONGKAR EXP-2000 Endom, Wesman; Basari, Zakaria; Sumantri, Ishak
Jurnal Penelitian Hasil Hutan Vol 21, No 1 (2003): 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.2003.21.1.67-81

Abstract

Loading  and unloading works are intermediary activities in the logging operation.  The logs after being felled/cut down in the forest will be of economic values when they cannot be brought to the inherent processing industrie. Light­weight and small­size logs favor manual work in their handling as  long  as  man power  is available. Heavy­weight and  large­size  logs, however,  necessitate an auxiliary heavy­duty equipment,  since the manual work is sometimes no longer effective for loading­related operation, e.g. hoisting, placing, regulating their position, etc. The unloading of such logs, conversely, turns out to be easier, but can pose a dangerous threat. Therefore, cautious care is necessary.In dealing with loading/unloading problems as such particularly in plantation forest,  a special equipment that is simple in design has been devised, called as Exp­2000. The equipment, wich is powered by 11­HPs diesel engine, can also perform the skidding­operation.  The overall cost in devising the Exp­2000 s equipment  was Rp. 50,000,000. The trial test as performed on the equipment revealed the following results:                                                                     .The average loading and loading productivities were consecutively 9.54 m3 per hour and  13.18 m3 per hour.Cost of loading as well as unloading was Rp. 1.597,48 per m3.The average skidding productivity was 0.5053 m3.hm/hour with skidding cost at Rp 30,160 per m3.The skidding cost might be reduced to Rp.  21,165 per  m3  and concurrently the productivity increased to 2.25 m3per hour,  if the more powerful diesel engine,  e.g.  25 HP were used.
OPTIMASI PEMBUATAN PERNIS DARI DAMAR Dahlian, Erik; Hartoyo, Hartoyo; Yusnita, Erra
Jurnal Penelitian Hasil Hutan Vol 21, No 1 (2003): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4593.438 KB) | DOI: 10.20886/jphh.2003.21.1.23-30

Abstract

Varnish is a combined  liquid of resin oil, solvent,  pigment,  drying agent, and additives. The additives  in this regard are those  when applied on woods  surface can form  a dry layer which is harder and firmly stick to the  surface.In a effort  to enhance  damar utilization, an investigation has been conducted on  varnishmanufacturing of damar mata kucing of poor quality type. This investigation was intended to apply appropriate and  more efficient  methods of processing of varnish aimed at improving its quality and increasing  commercial  values as­well.  Meanwhile,  the target  of this investigation was to get  the varnish­processing methods with low cost of investment which facilitate its application in the damar producing sites more economical.The results of this investigation  revealed that  the processing methods, implemented  by adopting formula  66,0/24,0 k; 65.5/24,5 s and  65,5/24,5 k; were capable of producing varnish with satis factory quality which comply with the requirement of ICI s paint factory.  The use of low quality damar mata kucing  mixed  with particular  solvent  composed  of toluene   and  kerosene can contribute to the operation of a small­scale industries economically more feasible.  
PEMBUATAN ARANG AKTIF DARI TEMPURUNG KELAPA, SERBUK KAYU, TEMPURUNG DAN TANDAN KELAPA SAWIT Pari, Gustan; Abdurrohim, Sasa
Jurnal Penelitian Hasil Hutan Vol 21, No 1 (2003): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6544.189 KB) | DOI: 10.20886/jphh.2003.21.1.55-65

Abstract

The aim of this experiment was to learn the properties/characteristics of activated charcoal manufacturedfrom various ligno­cellulosic materials, i.e. coconut shell, oil­palm bunches,  wood sawdust (sawn from mixed forest wood species), and empty oil­palm bunches.At first,  each  of the  four  ligno­cellulosic materials  was carbonized into charcoal  under the particular conditions, as follows : the  materials converted to small particles with 0.3 ­ 0.5  cm size, an  implementing carbonization temperature  at  500oC. The charcoal  was  activated  using  the condition:   activating temperature at 900oC for 30 minutes,  and exercising air flow  rate at 800 ­ I,100oC. The variables implemented in this experiment were kinds of raw materials (i.e.  4 kinds as previously mentioned), and soaking  in 1 percent  NaOH (alkali) for 24 hours which was further compared with the one without soaking.Charcoal properties showed that coconut shell obtained the highest in fixed carbon content,  the lowest in volatile matter and ash.  Results in activated charcoal analyses showed that  coconut shell obtained  the highest  in yield  (50.5%)  while the empty fruit bunch was the lowest (29.3%).  The coconut shell also  obtained the   highest  in fixed  carbon  (85.9%)  while the lowest was saw  dust (69.1%).Soaking treatment showed better quality on most of activated charcoal properties.   Coconut shell gave the highest in benzene adsorption (20.17%) and iod adsorption (881.8  mg/g).  In general,  other raw materials showed low adsorption to benzene, while most of them has been met the AWWA B.600 ­ 78 standard or iod adsorption. The CPO refining showed that  saw dust activated charcoal gave the best  in refining (54.8% transmission)  followed by empty fruit bunch, coconut shell and oil palm shell.

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