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Kiky Corneliasari Sembiring
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology

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Carbonization of Palm Oil Empty Fruit Bunch (EFB) in Hydrothermal Processes to Produce Biochar Rakhman Sarwono; Silvester Tursiloadi; Kiky Corneliasari Sembiring
Jurnal Kimia Terapan Indonesia Vol 18, No 02 (2016)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.746 KB) | DOI: 10.14203/jkti.v18i02.46

Abstract

ABSTRACT Empty fruit bunch (EFB) of palm oil is a waste from the palm oil industries which in a large amount, those waste is not properly utilized yet.  EFB is a lignocelluloses waste as a polymer with big molecule such as cellulose, lignin, and hemicelluloses that can be degraded into smaller molecules in hydrothermal carbonization (HTC) process. The HTC process of EFB will result three fractions such as gas, organic water soluble and biochar as solid residue or bio-char-water-slurry. EFB degradation is influenced by the operation conditions such as temperature, pressure, catalysts, reaction time, stirring and ratio liquid and solid. The HTC  process involved many routes of reaction such as liquefaction, hydrolysis, dehydration, decarboxylation, condensation, aromatization, and polymerization. In this experiment 60 ml closed vessel was used as the HTC reactor to degrade of EFB. EFB concentration of 6.44%   resulted 62%  of conversion. Reaction time of 6 hours resulted    62 % of conversion. Increasing the reaction time and temperature increase the conversion  of  EFB. Liquid products of organic water soluble has cleared  yellow color, after several hours the color become darkness that is further reaction still occurs in that solution.  Solid products is biochar  as brown coal,  that can be easily separated and processed into powder, pellet or briquette form with outstanding storage and transport characteristics. For further economic development, biochar with excellent transport characteristics, the possibility of exporting this commodity to the world’s energy market is possible.   Key words: EFB, hydrothermal, carbonization, conversion, biochar
Synthesis Gas Production via Aqueous Phase Reforming over Hydrotalcite-supported Catalysts Luthfiana Nurul Hidayati; Anis Kristiani; Kiky Corneliasari Sembiring; Fauzan Aulia; Sudiyarmanto Sudiyarmanto
Jurnal Kimia Terapan Indonesia Vol 23, No 1 (2021)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/inajac.v23i1.479

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Depletion of fossil fuel has gained attention to find an alternative of energy resources. The consumption of fossil fuel is increased gradually, raising many unfavourable challenges such as exploiting the unrenewable resources and causing environmental damages. This study aimed to produce clean energy derived from renewable resources. Glycerol as a by-product from biodiesel production from palm oil through  esterification process. Conversion of glycerol to synthetis gas (syngas) which produced hydrogen as the main product is considered as a renewable-clean fuel. Glycerol has been successfully converted to syngas by Aqueous Phase Reforming (APR) process over solid base catalysts. Hydrotalcite which is a layered double hydroxide used as catalyst support was impregnated with various metal promoters such as Ni, Cu, Co, Zn, and Sn. Those catalysts were characterized by Brunauer-Emmett-Teller surface area analysis, Thermal Gravimetry Analysis, Fourier Transform Infrared Spectrometry and X-Ray Diffraction to investigate the properties and structure of the catalysts. Catalytic activity was evaluated in a continuous fixed- bed reactor to produce syngas through APR reaction. The gas products were analyzed by GC-TCD, resulting Cu/hydrotalcite catalyst produced hydrogen, 55.2% v/v.
HIDROLISIS LIGNOSELULOSA PELEPAH DAN TANDAN KOSONG KELAPA SAWIT DENGAN KATALIS ZIRKONIA TERSULFATASI Anis Kristiani; Kiky Corneliasari Sembiring; Haznan Abimanyu; Fauzan Aulia
Jurnal Kimia Terapan Indonesia Vol 15, No 2 (2013)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2609.593 KB) | DOI: 10.14203/jkti.v15i2.112

Abstract

Lignocellulosic biomass which are frond and empty fruit bunches (EFB) is second generation raw material for ethanol production. Lignocellulose usage is expected to create a green process. Utilization of lignocellulose materials into ethanol involved four main processes, i.e pretreatment, hydrolysis/sacharification, fermentation, distillation and dehydration ethanol that was product. This research aims to optimize hydrolysis process of EFB and frond by using sulfated zirconia catalyst characterized its physical and chemical properties as a solid acid catalyst. Catalytic hydrolysis process conducted at 160 DCfor 3 hours gave the highest TRS (Total Reducing Sugar) which is 17,51 % for EFB while for frondfor 2 hours which is 19,23 % .Keyword: Hydrolysis, solid acid catalyst, lignocellulose, frond, EFB, sulfated zirconia
Co-Authors Anis Kristiani Anis Kristiani Haznan Abimanyu I Gusti Ngurah Antaryama Luthfiana Nurul Hidayati Rakhman Sarwono Silvester Tursiloadi Sudiyarmanto Sudiyarmanto