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Tjutju Nurhayati Syahri
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PEMBUATAN GLUKOSA DAN ALKOHOL DARI SAGU (Metroxylon spp.) Tjutju Nurhayati Syahri; Hartoyo Hartoyo
Jurnal Penelitian Hasil Hutan Vol 5, No 2 (1988): 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.1988.5.2.93-96

Abstract

A study for  production  of glucose   and  alcohol  from  sago  (Metroxylon Spp)  was conducted   on a  laboratory  scale in  the  Forest  Product Research and  Development Centre, Bogor.Treatment condition given  for hydrolysis of  sago in order   to produce   glucose  was three  levels of  sulfuric  acid  (of 0.5 N; 0,75 N and 1.0 N)  with  three levels of  temperature and pressure  (of 250°F/15psi, 259°F/20psi,  and 274oF/30psi).The  reaction time  for hydrolysis at  each  treatment combination were three levels  (of  90  minutes, 120  minutes and 150 minutes). Glucose obtained from sago hydrolysis   in this experiment  was then  fermented for producing  alcohol  by means of  Sacharomyses cereuiciae  enzym   activity    from  yeast.The  result  showed   that  glucose  yield   during  these experiment  ranged  from 42.8 to  77,6  percent. The  maximum glucose  yield is obtained from the 274°F/30psi treating  condition   and  sulfuric  acid concentration of  1.0 N  within 120 minutes of  hydrolysis time.  Until 120  minutes   of  hydrolysis  period   the glucose  yield  tend  to increase with  the increasing treatment   combination level.   The  results  of glucose tends to  decrease afterwards  at hydrolysis  period  of 1.50 minutes.The highest  alcohol  yield  is 14.2  percent and is obtained  from  fermentation  of highest  glucose yield of 77.6 percent. Based on the result of chromatographic analysis  of alcohol  revealed  that alcohol produced is classified cu. ethanol  (C2H50H)
FERMENTASI PADAT DARI BEBERAPA LIMBAH LIGNOSELULOSA Tjutju Nurhayati Syahri; Sri Komarayati; Gusailina Gusailina
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 | Full PDF (5722.132 KB) | DOI: 10.20886/jphh.1989.6.2.106 - 112

Abstract

Lignocellulosic     wastes  such  as  rubber  wood  saw  dust,   bagasse,   cayuput   oil  waste,  municipal  solid  waste,   vegetable waste  were  digested   by  solid  state  fermentation    at Thermophillic   temperature    (55°C),  and dry  matter  condition   of 20-40Percent  in 25 liter anaerobic   fermentors.All  of  the  lignocellulosic   wastes,   except  for cayuput   oil waste  can be digested.   The  result  revealed  that  the  biogas productivity   is about   1.6­6.5   V/V.r.d,   methane   content   about  48.8­53.3    percent,   retention   time  about   13­34    days and efficiency   of  conversion  about   12-61 percent.Solid  state   fermentation    at  the  above  mentioned    conditions   increases  the  biogas productivity     of  about  2-6   times more  than  that  of  the  conventional    method.Solid  state  fermentation   of  a mixture  of  rubber  wood  saw dust and water hyacinth   (ratio  90/10) revealed that  bioga» productivity   was the  lowest,   retention  time  appeared  to be the longest and the efficiency of  conversion  was relatively  low (15%),,    On the  other  hand,  solid  state   fermentation    of  fresh  municipal  solid  waste gave  the  highest  productivity    of about 6.5 V/V,r,d,  relatively short retention  time  (16.6  days) and high efficiency  of about  57%.  Solid  state  fermentation   of  mixture of  rice straw and  water hyacinth   (95/5)  and  also of  the municipal  solid waste,  rubber  wood  saw dust,  bagasse and water hya- cinth  (68/ 15/ 1214) gave   a high productivity    and  efficiency.
PEMANFAATAN LIMBAH LIGNOSELLULOSA UNTUK GAS BAKAR DENGAN METODE FERMENTASI Tjutju Nurhayati Syahri
Jurnal Penelitian Hasil Hutan Vol 6, No 7 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7337.821 KB) | DOI: 10.20886/jphh.1990.6.7.452-458

Abstract

The gasification of  lignocellulosic waste  was conducted by fermentation method at  thermophilic condition  (45 -55°C).  The  material  was  obtained   from vegetable  market  at Bogor.  The gasification trial  made  in pilot  scale reactor  of having  capacity  of 30 m3 and equipped with gas holder of 50 m3, steam boiler of 50 kg/h and dual generator  of  17.5 kVA. The waste  was cut first become 1-3 cm  long on choper  of  0.3  m3/h  volume. Parameter  of  fermentation  choosed  on 10 m3  volume  actif  and  retention time  was 20.9 daysThe result revealed that  thermophilic fermentation of waste which had total solid about 22.3 % and ash about 33.9 % and  feeding about 478 kg fresh  waste per day produced   biogas about  28.7 m3 per day  on methane  content about 54.5 %, productivity  about 2.9 m3  per  m3  reactor per  day  and  efficiency  of  conversion  about 57  %.The total  of  fuel  consumption  along fermentation   per day was 4.34 hours of man hours  work  about  1.16 MJ and it was   from 1 tube  LPG  of  12.5 kg and  14.31 diesel. LPG  was used for  steam  boiler can  be changed  with  31.2 m3 biogas per  day. In  this  case the production of  biogas per day cannot be dropped for  the  total  of  fuel  consumption   even  steam boiler.  The  fermentation  of 22965  kg wet lignocellulosic   waste produced  gas bio about  1380 m3 and wet  residu for compos raw material  about  16430  kg. The  biogas production  was equavalent  with  44 LPG  container of  12.5 kg.
ANALISIS KIMIA 75 JENIS KAYU DARI BEBERAPA LOKASI DI INDONESIA Tjutju Nurhayati Syahri
Jurnal Penelitian Hasil Hutan Vol 5, No 1 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3962.336 KB) | DOI: 10.20886/jphh.1988.5.1.6-11

Abstract

The result of chemical analyses of 205 wood species has been published in previous reports.  The analyses comprised determination of content of cellulose, lignin, pentosan, ash, solubility in alcohol benzene 1:2, hot and cold water and In 1:2 sodium hydroxide. As a continuation of the above work, the result of chemical analyses of 75 wood species is presented in this report.The analyses reveal that cellulose content ranges from  40.58-62.50  percent, lignin from  21.10-35.03 percent, pentosan from 8.90-19.96 percent and ash from 0.08-3.40 percent. The solubility in alcohol benzena 1  :  2 ranges from  0.54-11.90 percent, hot water 0.39-12.95 percent and 1% natriumhidroxide from 0.50-22.27 percent. There are 43 wood species with cellulose content above 45 percent, 8 species with lignin content above 33 percent, and there are respectively 25 and 39 wood species with solubility in alcohol benzena 1 : 2 and hot water above 4 percent.
SIFAT DAN KUALITAS GAHARU (GONYSTILLUS SPEC.) Tjutju Nurhayati Syahri
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.1989.6.2.129-132

Abstract

Gaharu of  Gonystillus spec.  from  South  Kalimantan   has the following  properties   :   moisture  content   5%,  essential  oil content   51%,  caloriffic   value  5655  cal/g, ash content   0.24%,   and  specific  gravity  0. 76. According   to  the  quality   clasifi­ cation,  the gaharu  of  Gonystillus spec.  belong  to  no.  I -   b,  and  its sales was Rp.   250,000.-Lignin  content   of gaharu was about  the same as lignin content   of wood,  cellulose  and pentosan  are somewhat   lower.It  was meant  that  lignin  was not  be degradated,   but  cellulose  and pentosan   was degradated  by fungi  in the production of gaharu.
PEMBUATAN GLUKOSA DAN ALKOHOL DARI SAGU (Metroxylon spp.) Tjutju Nurhayati Syahri; Hartoyo Hartoyo
Jurnal Penelitian Hasil Hutan Vol 5, No 2 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7517.68 KB) | DOI: 10.20886/jphh.1988.5.2.93-96

Abstract

A study for  production  of glucose   and  alcohol  from  sago  (Metroxylon Spp)  was conducted   on a  laboratory  scale in  the  Forest  Product Research and  Development Centre, Bogor.Treatment condition given  for hydrolysis of  sago in order   to produce   glucose  was three  levels of  sulfuric  acid  (of 0.5 N; 0,75 N and 1.0 N)  with  three levels of  temperature and pressure  (of 250°F/15psi, 259°F/20psi,  and 274oF/30psi).The  reaction time  for hydrolysis at  each  treatment combination were three levels  (of  90  minutes, 120  minutes and 150 minutes). Glucose obtained from sago hydrolysis   in this experiment  was then  fermented for producing  alcohol  by means of  Sacharomyses cereuiciae  enzym   activity    from  yeast.The  result  showed   that  glucose  yield   during  these experiment  ranged  from 42.8 to  77,6  percent. The  maximum glucose  yield is obtained from the 274°F/30psi treating  condition   and  sulfuric  acid concentration of  1.0 N  within 120 minutes of  hydrolysis time.  Until 120  minutes   of  hydrolysis  period   the glucose  yield  tend  to increase with  the increasing treatment   combination level.   The  results  of glucose tends to  decrease afterwards  at hydrolysis  period  of 1.50 minutes.The highest  alcohol  yield  is 14.2  percent and is obtained  from  fermentation  of highest  glucose yield of 77.6 percent. Based on the result of chromatographic analysis  of alcohol  revealed  that alcohol produced is classified cu. ethanol  (C2H50H)
FERMENTASI PADAT DARI BEBERAPA LIMBAH LIGNOSELULOSA Tjutju Nurhayati Syahri; Sri Komarayati; Gusailina Gusailina
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.1989.6.2.106 - 112

Abstract

Lignocellulosic     wastes  such  as  rubber  wood  saw  dust,   bagasse,   cayuput   oil  waste,  municipal  solid  waste,   vegetable waste  were  digested   by  solid  state  fermentation    at Thermophillic   temperature    (55°C),  and dry  matter  condition   of 20-40Percent  in 25 liter anaerobic   fermentors.All  of  the  lignocellulosic   wastes,   except  for cayuput   oil waste  can be digested.   The  result  revealed  that  the  biogas productivity   is about   1.6­6.5   V/V.r.d,   methane   content   about  48.8­53.3    percent,   retention   time  about   13­34    days and efficiency   of  conversion  about   12-61 percent.Solid  state   fermentation    at  the  above  mentioned    conditions   increases  the  biogas productivity     of  about  2-6   times more  than  that  of  the  conventional    method.Solid  state  fermentation   of  a mixture  of  rubber  wood  saw dust and water hyacinth   (ratio  90/10) revealed that  bioga» productivity   was the  lowest,   retention  time  appeared  to be the longest and the efficiency of  conversion  was relatively  low (15%),,    On the  other  hand,  solid  state   fermentation    of  fresh  municipal  solid  waste gave  the  highest  productivity    of about 6.5 V/V,r,d,  relatively short retention  time  (16.6  days) and high efficiency  of about  57%.  Solid  state  fermentation   of  mixture of  rice straw and  water hyacinth   (95/5)  and  also of  the municipal  solid waste,  rubber  wood  saw dust,  bagasse and water hya- cinth  (68/ 15/ 1214) gave   a high productivity    and  efficiency.
PEMANFAATAN LIMBAH LIGNOSELLULOSA UNTUK GAS BAKAR DENGAN METODE FERMENTASI Tjutju Nurhayati Syahri
Jurnal Penelitian Hasil Hutan Vol 6, No 7 (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.1990.6.7.452-458

Abstract

The gasification of  lignocellulosic waste  was conducted by fermentation method at  thermophilic condition  (45 -55°C).  The  material  was  obtained   from vegetable  market  at Bogor.  The gasification trial  made  in pilot  scale reactor  of having  capacity  of 30 m3 and equipped with gas holder of 50 m3, steam boiler of 50 kg/h and dual generator  of  17.5 kVA. The waste  was cut first become 1-3 cm  long on choper  of  0.3  m3/h  volume. Parameter  of  fermentation  choosed  on 10 m3  volume  actif  and  retention time  was 20.9 daysThe result revealed that  thermophilic fermentation of waste which had total solid about 22.3 % and ash about 33.9 % and  feeding about 478 kg fresh  waste per day produced   biogas about  28.7 m3 per day  on methane  content about 54.5 %, productivity  about 2.9 m3  per  m3  reactor per  day  and  efficiency  of  conversion  about 57  %.The total  of  fuel  consumption  along fermentation   per day was 4.34 hours of man hours  work  about  1.16 MJ and it was   from 1 tube  LPG  of  12.5 kg and  14.31 diesel. LPG  was used for  steam  boiler can  be changed  with  31.2 m3 biogas per  day. In  this  case the production of  biogas per day cannot be dropped for  the  total  of  fuel  consumption   even  steam boiler.  The  fermentation  of 22965  kg wet lignocellulosic   waste produced  gas bio about  1380 m3 and wet  residu for compos raw material  about  16430  kg. The  biogas production  was equavalent  with  44 LPG  container of  12.5 kg.
ANALISIS KIMIA 75 JENIS KAYU DARI BEBERAPA LOKASI DI INDONESIA Tjutju Nurhayati Syahri
Jurnal Penelitian Hasil Hutan Vol 5, No 1 (1988): 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.1988.5.1.6-11

Abstract

The result of chemical analyses of 205 wood species has been published in previous reports.  The analyses comprised determination of content of cellulose, lignin, pentosan, ash, solubility in alcohol benzene 1:2, hot and cold water and In 1:2 sodium hydroxide. As a continuation of the above work, the result of chemical analyses of 75 wood species is presented in this report.The analyses reveal that cellulose content ranges from  40.58-62.50  percent, lignin from  21.10-35.03 percent, pentosan from 8.90-19.96 percent and ash from 0.08-3.40 percent. The solubility in alcohol benzena 1  :  2 ranges from  0.54-11.90 percent, hot water 0.39-12.95 percent and 1% natriumhidroxide from 0.50-22.27 percent. There are 43 wood species with cellulose content above 45 percent, 8 species with lignin content above 33 percent, and there are respectively 25 and 39 wood species with solubility in alcohol benzena 1 : 2 and hot water above 4 percent.
SIFAT DAN KUALITAS GAHARU (GONYSTILLUS SPEC.) Tjutju Nurhayati Syahri
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.1989.6.2.129-132

Abstract

Gaharu of  Gonystillus spec.  from  South  Kalimantan   has the following  properties   :   moisture  content   5%,  essential  oil content   51%,  caloriffic   value  5655  cal/g, ash content   0.24%,   and  specific  gravity  0. 76. According   to  the  quality   clasifi­ cation,  the gaharu  of  Gonystillus spec.  belong  to  no.  I -   b,  and  its sales was Rp.   250,000.-Lignin  content   of gaharu was about  the same as lignin content   of wood,  cellulose  and pentosan  are somewhat   lower.It  was meant  that  lignin  was not  be degradated,   but  cellulose  and pentosan   was degradated  by fungi  in the production of gaharu.
Co-Authors Gusailina Gusailina Hartoyo Hartoyo Sri Komarayati