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All Journal Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Penelitian Hasil Hutan
Denny Irawati
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Materials Science & Nanotechnology

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Ethanol Production Using SSF Method from Calcium Hydroxide Pretreated Wood Meal Denny Irawati; Johannes PG Sutapa; Ardi B Firmansyah; Permana A Mardika; Farkhan W Nugroho; Sri N Marsoem
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 1 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1024.398 KB) | DOI: 10.51850/jitkt.v11i1.102

Abstract

The objective of this research was to determine the effect of wood waste pretreatment with calcium hydroxide on the yield of ethanol. Wood waste of jati (Tectona grandhis) and sengon (Paraserianthes falcataria) were treated with 20% of CaOH2 solution for 4 days at 50, 60, and 70 °C preceding ethanol production with simultaneous saccharification and fermentation (SSF) method. In the present SSF process, saccharification and fermentation were respectively carried out by the use of cellulase and Saccharomyces cerevisiae in a shaker incubator with 12 rpm at 30 °C for 72 hours. The resulting ethanol was then analyzed using gas chromatography. The chemical compounds of woods (i.e. extractive, holocellulose, alpha-cellulose, pentose and lignin) were also evaluated. It was found that increasing the temperature of alkaline pretreatment increased ethanol yield for both sengon and jati wood wastes. The ethanol yield was in the range of 0.027-0.054%. CaOH2 pretreatment at 70 oC of sengon wood wastes resulted in the highest yield. At elevated temperature, the pretreatment of wood wastes decreased the content of extractive, holocellulose, lignin and pentosan of sengon and jati wood wastes. These were in the contrary to that of increased alpha cellulose content.Key words: calcium hidroxyde, enzymatic saccharification, ethanol, Paraserianthes falcataria, Tectona grandis
PENGGUNAAN Phanerochaete chrysosporium PADA PENGOLAHAN PULP BIO-SEMI-MEKANIS KAYU TERENTANG (Campnosperma auriculata Hook.f) Yeni Aprianis; Denny Irawati; Sri Nugroho Marsoem
Jurnal Penelitian Hasil Hutan Vol. 34 No. 3 (2016): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2016.34.3.231-239

Abstract

Terentang wood (Campnosperma auriculata Hook.f) is relatively low in specific gravity (0.3), hence its utilization as pulp by chemi-mechanical is an alternative process. Energy consumption was reduced by applying lignin degrading fungi (Phanerochaete chrysosporium) as pretreatment in the chemi-mechanical process. This paper examines the effects of P. chrysosporium incubation periods into chemical components and energy refining consumption of terentang wood. Four percent of NaOH was used in the chemi-mechanical process, and incubation periods studied were 0 (control), 3, 4 and 5 weeks. Results showed that P. chrysosporium significantly affected the weight loss, chemical properties, and refining energy consumption of terentang wood pulping process. Wood chip weight loss was about 15.95-21.31% and alpha-cellulose raised up to 6.77%. Five weeks incubation time decreased lignin content up to 22.97% and saved the refining energy up to 22.7%.
Co-Authors Ardi B Firmansyah Farkhan W Nugroho Johannes PG Sutapa Permana A Mardika Sri N Marsoem Sri Nugroho Marsoem Yeni Aprianis