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All Journal Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Kimia Terapan Indonesia
Dian Burhani
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Materials Science & Nanotechnology Other

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Alkaline Pretreatment Effect on Sweet Sorghum Bagasse for Bioethanol Production Yanni Sudiyani Sudiyani; Eka Triwahyuni; . Muryanto; Dian Burhani; Joko Waluyo; Anny Sulaswaty; Haznan Abimanyu Abimanyu
Proceedings of The Annual International Conference, Syiah Kuala University - Life Sciences & Engineering Chapter Vol 5, No 1 (2015): Engineering
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (156.155 KB)

Abstract

Lignocellulosic material, which consist mainly of cellulose, hemicelluloses and lignin, are among the most promising renewable feedstock for the production of energy and chemicals. The bagasse residue of sweet sorghum can be use utilized as raw material to alternative energy such as bioethanol. Bioethanol production consist of pretreatment, saccharification, fermentation and purification process. The pretreatment process is of great importance to ethanol yield. In the present study, alkaline pretreatment was conducted using a steam explosion reactor at 1300C with concentrations of NaOH 6, and 10% (kg/L) for 10, and 30 min. For ethanol production separate hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SSF) process were conducted with 30 FPU of Ctec2 and Htec2 enzyme and yeast of Saccharomyces cerevisiae. The results shows that maximum cellulose conversion to total glucose plus xylose were found to be greatest with NaOH 10% for 30 min. Maximum ethanol yield 92.19% and high concentration of ethanol 66.88g/L were obtained at SSF condition after 24 h.
The Effect of Acid Hydrolysis Treatment on the Production of Nanocellulose Based on Oil Palm Empty Fruit Bunches Athanasia Amanda Septevani; Dian Burhani; Yulianti Sampora; Yenni Apriliany Devy; Gita Novi Ariani; Sudirman Sudirman; Dewi Sondari; Khairatun Najwa Mohd Amin
Jurnal Kimia Terapan Indonesia Vol 21, No 1 (2019)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (41.173 KB) | DOI: 10.14203/jkti.v21i1.416

Abstract

Nanocellulose has been known as promising reinforcing material in various polymer based product resulted to remarkable improvement in mechanical and thermal properties. Hence, studies to date have developed and explored various sources of biomass to produce nanocellulose. The aims of this study are to synthesize and fully characterize nanocellulose obtained from abundantly available oil palm empty fruit bunches via two different methods which are strong (H2SO4) and mild acid (H3PO4) hydrolysis at 50 °C for 3.5 hours. Based on the morphological study using Transmission Electron Microscopy, rod like nanocellulose was obtained using strong acid hydrolysis while mild acid hydrolysis produced long filament shape. X-Ray diffraction analysis showed that the degree crystallinity of nanocellulose produced from strong acid hydrolysis was higher which is 96% than that of mild acid hydrolysis recorded with 86%. While the sulphuric acid hydrolysis usually produces lower thermal stability than that of other types acid hydrolysis, surprisingly, in this study, the thermal stability of nanocellulose from strong acid hydrolysis was relatively similar to mild acid hydrolysis due to the formation of single crystal structure affording unique characteristic of the obtained nanocellulose.
Co-Authors . Muryanto Anny Sulaswaty Athanasia Amanda Septevani Dewi Sondari Eka Triwahyuni Gita Novi Ariani Haznan Abimanyu Abimanyu Khairatun Najwa Mohd Amin Luh Putu Ratna Sundari Sudirman Sudirman Yanni Sudiyani Sudiyani Yenni Apriliany Devy Yulianti Sampora