Mahreni, Mahreni (2012) Aplikasi dan Peranan Pelarut Ramah Lingkungan (Room Temperature Ionic Liquid, RTIL) dalam proses Konversi Lignoselulosa : Review. In: Seminar Nasional Teknik Kimia “Kejuangan” 2012 Pengembangan Teknologi Kimia untuk Pengolahan Sumber Daya Alam Indonesia Yogyakarta, 6 Maret 2012 ISSN: 1693-439, UPN "Veteran" Yogyakarta.
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Abstract
Abstract
Bio refinery process has an important role in the ethanol production made of the renewable resources
especially agricultural waste (lignocelluloses). Lignocelluloses (woods, grass, leaves) usually consist of
(i) lignin, (ii) cellulose, (iii) hemicelluloses and, (iv) other small molecules such as tannins, turpentine,
waxes and fats. Lignin is a part of the non biodegradable lignocelluloses, non sugar compound, and must
be separated before the cellulose and hemicelluloses could be use as starting materials in the ethanol
production. Delignification process using conventional method as well as explosive steam process fibres
(SEF) is the heating process of lignocelluloses in the alkaline solution at high temperature and pressure
(2120C and 20 atm). The result is a fibre (cellulose and hemicelluloses) and lignin-containing solution
that has been fragmented. SEF process leaves chemical waste and is not economic. In addition, the
residual lignin that is deposited on the surface of the fibre (5% lignin) requires further process by
bleaching. Ionic liquid (RTIL) is one of many solution for delignification. RTIL is a liquid salt at room
temperature and has the ability to dissolve various type of organic and inorganic components so that are
very wide spread used such as: in the electrochemistry, bio-refinery and heavy metal waste treatment.
RTIL solvent that is suitable for lignocelluloses are the type of imidazolium. RTIL role in the
lignocelluloses dissolution is acetylation by cation interaction (aromatic group that is positively charged)
of the RTIL with the lignin in the lignocelluloses. The result is celluloses that are hydrolyzed
enzymatically prepared and fermentation to produces bio-ethanol. Delignification process using RTIL
solvent can be performed at low temperature and pressure (below 1000C and atmospheric pressure) and
almost all the lignin can be separated from the fibre. Solvent separation by adding anti-solvent. The
boiling temperature of the RTIL is above 3000C that is why the vapour pressure would be very low and
almost all the solvent can be reused. Weaknesses are the solvent still relatively expensive, therefore the
attempt to industrial scale production of solvent is a challenge in an effort to decrease the dependency
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | renewable energy, lignocelluloses, bio ethanol, delignification, clean technology. |
| Subjek: | T Technology > TP Chemical technology |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Chemistry |
| Depositing User: | Dr Mahreni Mahreni |
| Date Deposited: | 23 Apr 2019 02:42 |
| Last Modified: | 23 Apr 2019 02:42 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/19441 |
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