Bibliographic Details
| Title: |
Comparative analysis of seed biomass from Amazonian fruits for activated carbon production. |
| Authors: |
Mafra, Edina Ruth Mendes Leal, de Paula Protásio, Thiago, Bezerra Bezerra, Jefferson, Pedroza, Marcelo Mendes, Barbosa, Daianna Batista, Viana, Melissa Ferreira, de Souza, Tiago Marcolino, Bufalino, Lina |
| Source: |
Biomass Conversion & Biorefinery; May2024, Vol. 14 Issue 10, p11279-11293, 15p |
| Abstract: |
Amazon offers several lignocellulosic biomasses with unknown technological properties contrasting with a growing demand for activated charcoal for water decontamination. Thus, this work investigated the chemical features of the murumuru (MS) and patauá (PS) palm seeds and their thermal behavior during pyrolysis up to 600 °C to verify their suitability for the future production of chemically activated carbon. The biomasses showed similar H(%)/C(%) ratios (≈ 0.13) and lignin contents (≈ 24%), both features closely related to increased activated carbon yield. Regarding the possibility of providing highly porous adsorbents, PS depicted more cellulose and hemicelluloses favorably. On the other hand, MS showed an outstandingly high level of total extractives (31%) compared to PS and most lignocellulosic biomasses of literature. Ultimately, the proximate analysis revealed that PS's volatile material (%)/fixed carbon (%) was 2.4, much lower than MS's one of 3.8. As a drawback for pyrolysis yield, both palm wastes showed ash levels (≈2%) above many other previously studied lignocellulosic biomasses. However, near-infrared spectroscopy analysis revealed some oxygenized chemical groups able to raise the acidity of derived activated carbons, promising to adsorb cations. Murumuru (23.7%) showed a lower pyrolysis yield than patauá (30.7%) at 600 °C. Temperatures below 400 °C are more suitable for the pyrolysis of murumuru seeds, while patauá seeds stand higher temperatures without compromising the charcoal yield. Therefore, high extractive content surpassed other chemical traits in influencing pyrolysis yield. Statement of novelty This thermo-chemical and thermal characterization study makes it possible to trace the potential of understudied palm seeds, such as murumuru and patauá, for producing activated carbon. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
