Thermogravimetric and Ftir Analyzes of Corn Cob Pyrolysis

Padilla, Elías Ricardo Durango; Nakashima, Gabriela Tami; Larissa, Ana; Hansted, Santiago; Santos, Lídia; Barros, João Lúcio de; Conti, Andrea Cressoni de; Yamaji, Fábio Minoru

doi:10.21577/0100-4042.20170360

Cited by 14 publications

(11 citation statements)

References 7 publications

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“…When passing through 340°C, we can observe that samples in 30% oxygen atmosphere have greater mass loss than the ones under 21% oxygen. Degradation of cellulose occurs between 300°C and 400°C (FIGUEROA; MORAES, 2009;PADILLA et al, 2019), while the degradation of hemicellulose happens between 250°C and 350°C, the latter representing about 20% to 30% of the dry mass of the wood.…”

Section: Resultsmentioning

confidence: 99%

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Avaliação dos lenhos carbonizados de araucariaceae em diferentes concentrações de oxigênio por meio de termogravimetria e microscopia eletrônica de varredura

Marder

Lara

Jasper

et al. 2021

CeN

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Charcoal is one of the few lasting legacies of forest fires during thousands of years, representing a record of the dynamics of terrestrial biomes, as well as the characteristics of atmospheric oxygen throughout its ages. To understand climate change and fluctuations in atmospheric oxygen availability over time, the research used wood carbonization of Araucaria columnaris in thermal degradation (TGA) of 30% and 21% oxygen, and temperatures of 450°C and 600°C. These were then analyzed through Scanning Electron Microscopy (SEM) in different increases, observing the anatomy of the material in its three structural planes, and compared to bibliographies of studies developed in this area. The work highlighted a pattern in wood carbonization in both atmospheres, with significant changes in physical and chemical structure in all samples. The pyrolysis with oxygen and elevated temperatures, demonstrated fire aggressiveness, degrading with greater speed and intensity, observing the anatomical details that characterize gymnosperms. Thus, the studies aim at a greater understanding of the complex relationship between fire and the planet, and how climate change becomes essential for understanding the events of the future.

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Section: Resultsmentioning

confidence: 99%

“…The degradation of lignin occurs over a wide temperature range, starting at 100 °C and up to temperatures near 900°C, peaking at 460°C, representing a more stable component (PEREIRA et al, 2016;PADILLA et al, 2019). Lignin is a compound of three-dimensional macromolecules, amorphous and branched.…”

Section: Resultsmentioning

confidence: 99%

Avaliação dos lenhos carbonizados de araucariaceae em diferentes concentrações de oxigênio por meio de termogravimetria e microscopia eletrônica de varredura

Marder

Lara

Jasper

et al. 2021

CeN

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“…The middle peak might belong to 1) intercomponent between hemicellulose and cellulose, or 2) intermediate of doublestage pyrolysis of cellulose [52]. 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].…”

Section: Thermogravimetric Resultsmentioning

confidence: 99%

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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“…Elemental analysis was applied on different samples of AC prepared under different Table 5. Functional groups of wheat straw [33]. Thermogravimetric analysis was performed to study the stability of the produced AC as demonstrated in Fig.…”

Section: Characterization Of the Produced Activated Carbonmentioning

confidence: 99%

Synthesis of Activated Carbon from Agricultural Wastes and Its Application in Adsorption of Dyes

Hamad¹,

El-Sayed²,

Mohamed³

et al. 2023

Chem Eng & Technol

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Activated carbon (AC) is one of the most used materials in dye removal that can be synthesized using different agricultural wastes. In this work, the effects of waste type and pyrolysis temperature were investigated. Corn cob and wheat straw were used for preparation of activated carbon by applying 10 % H3PO4 as an activating agent, followed by pyrolysis at 400 or 500 °C and then thermal activation at 800 °C for 10 minutes. Elemental analysis, acid soluble matter, ash content, and calorific value were measured for the prepared samples of AC. Finally, the product was applied for adsorption of Congo Red and Nile Blue dyes from wastewater and the maximum adsorption capacity was found to be 99.56 and 85.23 mg g−1, respectively using a corn cob sample activated at 500 °C.

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Thermogravimetric and Ftir Analyzes of Corn Cob Pyrolysis

Cited by 14 publications

References 7 publications

Avaliação dos lenhos carbonizados de araucariaceae em diferentes concentrações de oxigênio por meio de termogravimetria e microscopia eletrônica de varredura

Avaliação dos lenhos carbonizados de araucariaceae em diferentes concentrações de oxigênio por meio de termogravimetria e microscopia eletrônica de varredura

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

Synthesis of Activated Carbon from Agricultural Wastes and Its Application in Adsorption of Dyes

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