Thermogravimetric characteristics and pyrolysis kinetics of Alga Sagarssum sp. biomass
Abstract
Alga Sagarssum sp. can be converted to bio-oil, gas, and char through pyrolysis. In this study, the pyrolysis characteristics and kinetics of Sagarssum sp. were investigated using a thermogravimetric analyzer and tubing reactor, respectively. Sagarssum sp. decomposed below 550°C, but the majority of materials decomposed between 200 and 350°C at heating rates of 5-20°C/min. The apparent activation energy increased from 183.53 to 505.57 kJ mol(-1) with increasing pyrolysis conversion. The kinetic parameters of Sagarssum sp. pyrolysis were determined using nonlinear least-squares regression of the experimental data, assuming second-order kinetics. The proposed lumped kinetic model represented the experimental results well and the kinetic rate constants suggested a predominant pyrolysis reaction pathway from Sagarssum sp. to bio-oil, rather than from Sagarssum sp. to gas. The kinetic rate constants indicated that the predominant reaction pathway was A (Sagarssum sp.) to B (bio-oil), rather than A (Sagarssum sp.) to C (gas; C1-C4).
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The second stage of S. horneri weight loss was approximately 38% between 200 and 400 °C, corresponding to decomposition of biopolymer fractions.
“In the second stage, a significant weight loss of approximately 38% was achieved between 200 and 400 ° C, corresponding to the decomposition of biopolymer fractions [41].”
From Preparation of Microporous Carbon from <i>Sargassum horneri</i> by Hydrothermal Carbonization and KOH Activation for CO<sub>2</sub> Capture (2018) · cites this paper as [41]
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Zeng, G., Lou, S., Ying, H., Wu, X., Dou, X., Ai, N., & Wang, J. (2018) · Journal of Chemistry · doi:10.1155/2018/4319149 · Cited by 39 · see citing works
“In the second stage, a significant weight loss of approximately 38% was achieved between 200 and 400°C, corresponding to the decomposition of biopolymer fractions [41].”
Background
- Authors
- Kim, S.-S., Ly, H. V., Kim, J., Choi, J. H., & Woo, H. C.
- Affiliations
- Kangwon National University (KR)
- Kyung Hee University (KR)
- Pukyong National University (KR)
- Corresponding author
- Kim, Seung-Soo
- Kim, Jinsoo
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2013-07
- Volume
- 139
- Pages
- 242-248
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2056516984
- Cited by
- 201
- References
- 30
- Citations by year
- 2026: 9 · 2025: 9 · 2024: 11 · 2023: 19 · 2022: 21 · 2021: 24 · 2020: 18 · 2019: 19 · 2018: 14 · 2017: 18 · 2016: 12 · 2015: 12 · 2014: 12 · 2013: 3
- FWCI
- 7.18
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- the Ministry for Food, Agriculture, Forestry and Fisheries (12128295500)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Thermochemical Biomass Conversion Processes
- Physical Sciences › Materials Science › Materials Chemistry › Thermal and Kinetic Analysis
- Physical Sciences › Engineering › Ocean Engineering › Coal Properties and Utilization
- Keywords
- Sargassum, seaweed biomass, pyrolysis kinetics, thermogravimetric analysis, apparent activation energy, second-order kinetics, lumped kinetic model, bio-oil, char, rate constants
- MeSH terms
- Elements, Hot Temperature, Kinetics, Gas Chromatography-Mass Spectrometry, Plant Oils, Seaweed, Thermogravimetry, Biomass
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