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Jurnal Penelitian Hasil Hutan
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Search results for , issue " Vol 10, No 1 (1992): Jurnal Penelitian Hasil Hutan" : 3 Documents clear
ANALISIS KIMIA 6 JENIS KAYU UNTUK HUTAN TANAMAN INDUSTRI Pari, Gustan; Hudaya, Nurmala
Jurnal Penelitian Hasil Hutan Vol 10, No 1 (1992): 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.1992.10.1.7-11

Abstract

This paper  deals with  a  chemical  analysis  of  six wood  species  obtained   from  industrial plantation Forest. The  analysis  comprises  of  the  determination    of  holocellulose.  lignin, pentosan,  moisture  content,   ash content, silica content  and  solubility  in cold water  hot  water,  sodium  hydroxide and ethanol  benzene   content. The result  shows  that  holocellulose  content  ranges  from  50.2  -   63.2 percent,    cellulose from  42.6  -   56.2 percent. The  high. celloluse content  are Dipterocarpus  haseltii,   Diryobalanops     lanceollata,  Shorea    and Agathis  ]orantifo1ia. Lignin   (rom  .24. 7  -    32.4  percent,    pentosan   from   15.2  -    19.0  percent.   ash cotent  from   0. 4 - 1. 8 percent.   Silica content from 0.1 -    a. 2 percent,   moisture   content from    10.2 -   32.0 percent.   Solubility  in cold water  from  2. 0 - 5.1 percent,    hot  water  from  3.5 -   5.8 percent,  in one percent   sodium  hydroxide  from  12.9 -   17. 6 percent   and so lubility in  ethano1-benzene   (1:2)  from   5.2 - 13.2 percent.Based  on  chemical  analysis, especially  the  cellulose  contants  the ,six  wood species for  timber  estate  are suitable  as raw material  for pulp  and paper  industry.
HUBUNGAN ANTARA KETEGUHAN GESER DENGAN KETEGUHAN REKAT INTERNAL PAPAN PARTIKEL Sutigno, Paribotro; Sulastiningsih, I M
Jurnal Penelitian Hasil Hutan Vol 10, No 1 (1992): 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.1992.10.1.16-19

Abstract

One of  the  partideboard  properties that  must be tested  is internal  bond  strength  or tensile  strength  perpendicular to surface. the  testing  procedure is relatively  difficult   because  before  applying  a tension  load vertically  to the  board  face, the  specimen  must   be  adhere  to  steel  or  wood   blocks  for  seuerol hours  to obtain  good  adhesion.  To  simplify   the pro- cedure, the  use  of  another   testing procedure called shear  strength   test  was tried.  It  is found   that  there  is  a relationship between   shear strength   (X)  and  internal  bond  strength   (Y)   which  can  be expressed   by   linear  regression  equations  i.e,: Y  = -  0.105  +  0.180   X  for  interior  particleboard  and  Y =  -  0.925  + 0.398  X  for  exterior  particleboard.   The  interior particleboard  specimens were  tested   under  dry   condition  whereas  exteriorparticleboard  specimem were boiled  for  two hours  before  testing.  Both regression equations can not  be pooled,  Based  on  the  result  it can be cohcluded  that  internal bond  strength   of  particleboard  can  be estimated by  using  its shear strength value. 
PENGARUH LAJU AIR UMPAN DAN UDARA PADA GASIFIKASI FLUIDIZED BED LIMBAH KAYU KAMPER (DRYOBALANOPS SPP) Nurhayati, Tjutju; Hartoyo, Hartoyo
Jurnal Penelitian Hasil Hutan Vol 10, No 1 (1992): 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.1992.10.1.24 - 28

Abstract

This research studied  the  fluizided bed gasification  process of wood  waste that could produce  highly yield  and good quality   of fuel gas.The processing  treatments  were conducted at 3 levels of  wood  feed flow  rate i.e 3. 6., 3.8 and 4.2  kgs/hour and 5 leveis  of air flow rate i.e  4.4,  4.7, 5.0,5.4 and 6.5  m3/hour.The  result  revaled that highest  caloriffic  value of produced gas was 7.106  MJ/m3   which  resulted  from  wood  feed and air  flow  rate  3. 6 kg/hour  and  4. 4  m3 /hour, respectively.  The product   gas composition  of  this  rate  was H2  = 5. 62 .CH = 3.99; CO=  11.77; C2H4 = 4.34;  C2H6 = 0.21; N2 = 57.69; 02 = 0.40 and C02 = 15. 71 (in  %  volume)The highest  total  energy  of product   gas was 20.36  MJ/m3  with fuel gas efficiency 26.16% which  resulted  from  feed and  air flow rote  4.2 kg/hour  and  6.5  m3/hour, respectively.  The product   gas composition at this rate  was H2  = 6.03; CH4  = 3.51;  CO=  12.60;  C2H4  = 2.46; C2H6  = 0.16; N2  = 57.23;  02  = 0.45  and C02   = 17.58,  while  the fluidued   bed gasification process  was held at 97oᵒC.

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