Thermogravimetric Study of Napier Grass in Inert and Oxidative Atmospheres Conditions

Boon, Tan Hong; Raheem, Abdul; Ghani, Wan Azlina Wan Ab Karim; Hussain, Siti Aslina; Ng, Denny K. S.

doi:10.21315/jps2017.28.s1.10

Cited by 8 publications

(3 citation statements)

References 34 publications

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“…However, in some works which corn cob was analyzed by TGA, there were only double peaks which separately belonged to hemicellulose and cellulose [53,54]. In case of Napier grass, the single peak was a merging peak [55,56]. Similarly, the single peak of sugarcane residue also agreed with one in the previous work [57].…”

Section: Thermogravimetric Resultsmentioning

confidence: 54%

Pyrolysis Kinetic Analysis of Biomasses: Sugarcane Residue, Corn Cob, Napier Grass and their Mixture

Phuakpunk¹,

Chalermsinsuwan²,

Assabumrungrat³

2020

EngJ

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The aim of this study is to investigate pyrolysis kinetic parameters of three high potential energy biomasses including sugarcane residue (tops and leaves), corn cob and Napier grass via thermogravimetry analysis (TGA). In addition, those of their mixture at 1:1:1 by mass is explored. Activation energy and pre-exponential factor were the two considered parameters calculated by following the Ozawa-Flynn-Wall method using condition of 30-900C with heating rates of 5, 10, 20 and 40C/min. The derivative thermogravimetric (DTG) curves indicated that there might be at least three different component structures in corn cob. The effective values of the both parameters were almost similar as 214.54, 216.60, 212.51 kJ/mol and 1.510E+19, 1.575E+19, 1.562E+19 min -1 for the sugarcane residue, the corn cob, the Napier grass, respectively. Finally, the ternary diagram suggested that the increase of Napier grass proportion would slightly affect the conversion of pyrolysis by reducing the total activation energy of the biomass mixture.

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Section: Thermogravimetric Resultsmentioning

confidence: 54%

Pyrolysis Kinetic Analysis of Biomasses: Sugarcane Residue, Corn Cob, Napier Grass and their Mixture

Phuakpunk¹,

Chalermsinsuwan²,

Assabumrungrat³

2020

EngJ

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“…Since biomass gasification is mostly controlled by a highly endothermic reaction, i.e., Bouduard's and steam methane reforming reactions, therefore heat supply becomes an important parameter that determines the overall process performance [4]. Most of the gasification performance studies have been conducted with externally heated laboratory-scale apparatus (by electrical heater), where the heat supply is relatively stable and well distributed [13][14][15][16][17]. Only a few studies have reported the performance of gasification in the pure autothermal gasification system [18].…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Napier Grass Gasification in an Autothermal Bubbling Fluidized Bed Reactor

et al. 2019

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Air gasification of Napier grass (NG) was studied with the target of producing combustible synthesis gas to be used in direct combustion for power generation. A small-scale autothermal bubbling fluidized bed gasifier was used to investigate the effect of reactor temperature, equivalence ratio (ER), and static bed height (SBH) on gasification performance and combustibility of the producer gas. The main generated species in syngas were identified through gas chromatography (GC) analysis. Minimum fluidization conditions were determined at different levels of SBH. Experiments carried out with two intentions of first, to achieve the highest composition of combustible species to ensure the maximum Lower Heating Value (LHV) of syngas and second, to obtain a high performance process with maximum yield of syngas and minimum residues. The results showed that the temperature and ER have significant effects on syngas yield and composition. SBH was found have a substantial effect on the production of H2 and CO. The results from this study was compared to other gasification studies from literature which have evaluated biomass gasification in bubbling fluidized bed reactors with different scales but almost similar method of experimentation. The purpose of verification was to demonstrate the effect of different reactor scales and heating characteristics on the results.

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“…14 Thermogravimetric analysis (TGA) is the most common and simplest method of evaluating the kinetics of pyrolysis. [15][16][17] The TGA determines the weight loss during sample decomposition as a function of time or temperature under inert atmosphere at a constant heating rate. 18 Pyrolysis kinetics can be analysed under isothermal or non-isothermal conditions.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Pyrolysis of Durian (Durio zibethinus L.) Shell Using Thermogravimetric Analysis

Tan¹,

Ahmed²,

Hummadi³

et al. 2019

JPS

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The characteristics and kinetics of durian shell (DS) pyrolysis were investigated using non-isothermal thermogravimetric analysis (TGA). DS is a celluloserich biomass with high volatile matters content, which is suitable for bio-oil production. Thermal decomposition experiments were performed under nitrogen flow at various heating rates (i.e., 5°C min -1 , 10°C min -1 and 20°C min -1 ). The model-fitting method represented by Coats-Redfern was applied on the experimental TGA data of DS pyrolysis. The decomposition of DS was divided into three stages: first stage (59°C-200°C) involved removal of moisture and light volatiles; second stage (200°C-400°C) showed decomposition of cellulose and hemicellulose; and third stage (above 400°C) presented lignin decomposition. There was 56% weight loss observed in second stage, revealing that decomposition of cellulose and hemicellulose contributed the most on volatile production. The model shows that the activation energy was between 42.08 kJ mol -1 and 84.40 kJ mol -1 for the second stage of the pyrolytic process from 200°C to 400°C using different decomposition mechanisms. The Coats-Redfern method is applied successfully for the correlation of experimental TGA data with an average correlation coefficient (R 2 ) of 0.991 while one-way diffusion model D1 gave the highest correlation coefficient of 0.998. DS biomass is a suitable raw material for energy or chemicals production.

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Thermogravimetric Study of Napier Grass in Inert and Oxidative Atmospheres Conditions

Cited by 8 publications

References 34 publications

Pyrolysis Kinetic Analysis of Biomasses: Sugarcane Residue, Corn Cob, Napier Grass and their Mixture

Pyrolysis Kinetic Analysis of Biomasses: Sugarcane Residue, Corn Cob, Napier Grass and their Mixture

Experimental Evaluation of Napier Grass Gasification in an Autothermal Bubbling Fluidized Bed Reactor

Kinetics of Pyrolysis of Durian (Durio zibethinus L.) Shell Using Thermogravimetric Analysis

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