Kinetic Study of Pyrolysis of Ulin Wood Residue using Thermogravimetric Analysis

Widiyannita, Aitia Mulyawati; Pradana, Yano Surya; Cahyono, Rochim Bakti; Sutijan,; Akiyama, Tomohiro; Budiman, Arief

doi:10.18517/ijaseit.10.4.3640

Cited by 2 publications

(2 citation statements)

References 27 publications

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“…Besides, the higher the heating rate, the wider and higher the peaks of the DTG curve, shifting towards higher temperatures. The same trend was also reported by previous researchers [40,42,43]. This phenomenon assumably occurs because of the thermal lag during the biomass decomposition process due to the heat transfer and the kinetics of decomposition of rice husk pellets at different heating rates [44].…”

Section: Effect Of Heating Ratesupporting

confidence: 87%

Kinetics of In-Situ Catalytic Pyrolysis of Rice Husk Pellets Using a Multi-Component Kinetics Model

Wibowo

Cahyono

Rochmadi

et al. 2023

Bull. Chem. React. Eng. Catal.

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Ash-based catalysts, as low-cost materials, are applicable in biomass pyrolysis and play a role in lowering the activation energy. This study enriched the insights of different method of catalyst addition into biomass in the catalytic pyrolysis. The addition of rice husk ash as a catalyst into rice husk pellets allows for better solid-solid contact between the biomass and the catalyst, since the common methods were only solid mixing. This research aimed to investigate the thermal characteristics and kinetics of the biomass components (hemicellulose, cellulose, lignin) in the in-situ catalytic pyrolysis of rice husk pellets with the addition of husk ash. The three-independent parallel reaction kinetics model was used to calculate the kinetics parameters based on thermogravimetric analysis conducted at 303-873 K with various heating rates (5, 10, 20 K/min) and ash addition ratios (10:0, 10:1, 10:2). The thermogram shows that the pyrolysis of rice husk pellets was divided into two stages. Stage 1, ranging from 510-650 K, represented the decomposition of hemicellulose and cellulose, occurring faster with high mass loss, while Stage 2, starting at around 650 K, represented lignin decomposition, occurring more slowly with low mass loss. The catalytic activity of the ash was only apparent at high temperatures, where cellulose and lignin decomposition were more dominant. Activation energy, as a representation of catalytic activity for each component, was not always lower in catalytic pyrolysis. However, the average activation energy decreased with increasing heating rates and ash addition ratios. The addition of the catalyst slowed the decomposition of hemicellulose but accelerated the decomposition of cellulose and lignin. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Section: Effect Of Heating Ratesupporting

confidence: 87%

Kinetics of In-Situ Catalytic Pyrolysis of Rice Husk Pellets Using a Multi-Component Kinetics Model

Wibowo

Cahyono

Rochmadi

et al. 2023

Bull. Chem. React. Eng. Catal.

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“…However, the utilization of NRE in Indonesia has only reached 2% of the total NRE potential. Meanwhile, Indonesia has various and abundant sources of biomass as an NRE alternative (Jamilatun et al, 2017a;Widiyannita et al, 2020). To overcome this imbalance, the government projects the use of biomass as an energy source to reach 22.7 million tons by 2050 (Yudiartono et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst

Wibowo

Cahyono

Rochmadi

et al. 2021

Int. J. Renew. Energy Dev.

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The thermogravimetric behaviors and the kinetic parameters of uncatalyzed and catalyzed pyrolysis processes of a mixture of powdered raw rice husk (RRH) and its ash (RHA) in the form of pellets were determined by thermogravimetric analysis at three different heating rates, i.e., 5, 10, and 20 K/min, from 303 to 873 K. This research aimed to prove that the rice husk ash has a catalytic effect on rice husk pyrolysis. To investigate the catalytic effect of RHA, rice husk pellets (RHP) with the weight ratio of RRH:ARH of 10:2 were used as the sample. Model-free methods, namely Friedman (FR), Kissinger-Akahira-Sunose (KAS), and Flynn-Wall-Ozawa (FWO), were used to calculate the apparent energy of activation ( ). The thermogravimetric analysis showed that the decomposition of RHP in a nitrogen atmosphere could be divided into three stages: drying stage (303-443 K), the rapid decomposition stage (443-703 K), and the slow decomposition stage (703-873 K). The weight loss percentages of each stage for both uncatalyzed and catalyzed pyrolysis of RHP were 2.4-5.7%, 35.5-59.4%, and 2.9-12.2%, respectively. Using the FR, FWO, and KAS methods, the values of for the degrees of conversion (a) of 0.1 to 0.65 were in the range of 168-256 kJ/mol for the uncatalyzed pyrolysis and 97-204 kJ/mol for the catalyzed one. We found that the catalyzed pyrolysis led the to have values lower than those got by the uncatalyzed one. This phenomenon might prove that RHA has a catalytic effect on RHP pyrolysis by lowering the energy of activation.

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Kinetic Study of Pyrolysis of Ulin Wood Residue using Thermogravimetric Analysis

Cited by 2 publications

References 27 publications

Kinetics of In-Situ Catalytic Pyrolysis of Rice Husk Pellets Using a Multi-Component Kinetics Model

Kinetics of In-Situ Catalytic Pyrolysis of Rice Husk Pellets Using a Multi-Component Kinetics Model

Thermogravimetric Analysis and Kinetic Study on Catalytic Pyrolysis of Rice Husk Pellet using Its Ash as a Low-cost In-situ Catalyst

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