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All Journal Reaktor Teknologi Indonesia International Journal of Renewable Energy Development
Dieni Mansur
Research Center for Chemistry, Indonesian Institute of Sciences, Kawasan PUSPIPTEK Serpong, Tangerang Banten 15314
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology

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HYDROTHERMAL LIQUEFACTION OF BLACK LIQUOR INTO PLATFORM CHEMICALS Mansur, Dieni; Simanungkalit, Sabar Pangihutan; Rinaldi, Nino; Abimanyu, Haznan
Teknologi Indonesia Vol 39, No 1 (2016)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (16.054 KB) | DOI: 10.14203/jti.v39i1.245

Abstract

Currently, much attention is devoted to produce bioethanol based on lignocellulosic materials for alternativefuels. Production of bioethanol from lignocellulosic generates black liquor as a waste during the pretreatmentprocess. The black liquor has a potential to produce platform chemicals. Conversion of black liquor into platformchemicals was carried out by hydrothermal liquefaction by involving water as reaction medium at 200275 C.Through the hydrothermal process combined with water at high temperature, catalytic role could be taken over bysodium sulfate. Increase in temperature up to 275C, activity of water combined with sodium sulfate also increasedin decomposition of block chemicals containing in the black liquor. The black liquor was converted into oxygenatedcompounds, such asphenol, propylene oxide, butyrolactone, and quaiacol. The chemicals were recovered as23, 16, 11 and 8 mol%, respectively.
PRELIMINARY STUDY OF PYROLYSIS OF CACAO POD HUSKS AND PRODUCT YIELDS IDENTIFICATION Mansur, Dieni
Teknologi Indonesia Vol 37, No 2 (2014)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (16.051 KB) | DOI: 10.14203/jti.v37i2.221

Abstract

Pyrolysis of cacao pod husks as one of agricultural crop residue took place in a fixed bed type of pyrolyzer under atmospheric pressure at 500oC. The process was studied by varying methods and temperature of feeding.The effect of N2 flow rate as carrier gas was also investigated. These effects influenced yield of product after pyrolysis especially on the char. Char as the main product of pyrolysis was recovered as 70 C mol% with one step feeding at 25oC under 20 ml/min of N2. Pyrolysis of cacao pod husk also produced bio-oil that consisted of several chemical compounds such as aliphatic and cyclic ketones, carboxylic acids, furans, aldehydes, alcohols, phenols and heterocyclic aromatics.
Production of Bio-hydrocarbon from Refined-Bleach-Deodorized Palm Oil using Micro Activity Test Reactor Mansur, Dieni; Aminuddin, Aminuddin; Wargadalam, Verina J
Reaktor Volume 20 No.2 June 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (271.503 KB) | DOI: 10.14710/reaktor.20.2.75-80

Abstract

Catalytic cracking of vegetable oil for the production of bio-hydrocarbons had been developed. In this study, the catalytic cracking of Refined-Bleach-Deodorized Palm Oil (RBDPO) had carried out over Fluid Catalytic Cracking Unit (FCCU) equilibrium catalyst in a micro activity test reactor at 510°C under various catalyst to oil (CTO) ratio of 1.20 - 2.01 g/g. The catalytic cracking of RBDPO had produced the organic liquid product (OLP) containing bio-hydrocarbon, water, gas, and coke on the catalyst converted to CO2 during the catalyst regeneration process. The increase in CTO ratio from 1.20 to 2.01, OLP yield decreased from 80.48% to 70.12%. The OLP was separated into gasoline, light cycle oil (LCO), and heavy cycle oil (HCO) based on boiling point difference by a simulated distillation gas chromatography (SimDis GC). High gasoline fraction as 31.56% was produced at CTO of 2.01 g/g. The gasoline fraction contained olefins, aromatics, paraffin, iso-paraffins, and a small amount of naphthenes and oxygenates. The presence of chemicals in the gasoline fraction influenced the research octane number (RON) of the fuel.Keyword: bio-hydrocarbon; catalytic cracking; micro activity test reactor; RBDPO
Enhancing bio-char calorific value through catalytic pyrolysis: The role of magnesium oxide-zeolite based catalysts Bianasari, Alien Abi; Bakar, Saifullah Abu; Khaled, Md Sarowar; Saepurahman, Saepurahman; Mansur, Dieni; Azad, Abul Kalam
International Journal of Renewable Energy Development Vol 15, No 1 (2026): January 2026
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.61234

Abstract

The current research aims to improve the generation of bio-char with elevated higher heating values (HHVs) by utilizing magnesium oxide-zeolite-based catalysts across various temperature conditions. The exploration of biomass catalytic pyrolysis has intensified in the pursuit of sustainable energy solutions. Catalytic pyrolysis offers a technique to convert abundant and renewable biomass resources into valuable biofuels and bio-char, thereby improving energy security and reducing dependence on fossil fuels. The use of suitable catalysts in biomass catalytic pyrolysis is crucial for enhancing the yield of bio-char with higher calorific value. This investigation explores the impact of magnesium oxide-zeolite-based catalysts on the higher heating values of bio-char generated from coconut shells. The initial findings indicate a notable enhancement in the calorific value of bio-char. The HHV increased from 12.03 MJ/kg for untreated coconut shells to 20.06 MJ/kg with ZSM-5, ultimately reaching an impressive 38.11 MJ/kg with the MgO/ZSM-5 catalyst. The results demonstrate that the addition of magnesium oxide significantly improves the energy content of bio-char. Various combinations of magnesium oxide, such as MgO/ZSM-5, MgO/Y2O3/ZSM-5, and MgO/Mn3O4/ZSM-5, are evaluated for their effects on the pyrolysis process. The results demonstrate that the impregnation of metal oxides into zeolite catalysts enhances catalytic performance and facilitates the efficient conversion of coconut shells into high-energy bio-char. The findings highlight the promise of metal oxide-zeolite catalysts in improving bio-char quality and promoting the development of sustainable energy technologies.
Co-Authors Aminuddin Aminuddin Azad, Abul Kalam Bakar, Saifullah Abu Bianasari, Alien Abi Haznan Abimanyu Khaled, Md Sarowar Nino Rinaldi Sabar Pangihutan Simanungkalit Saepurahman, Saepurahman Wargadalam, Verina J