2024 - Sustainable Industrial Processing Summit
SIPS 2024 Volume 8. Monteiro Intl. Symp / Composite, Ceramic and Nano Materials Processing
| Editors: | F. Kongoli, P. Assis, H.A.C. Lopera, S. Diaz, V. Scarpini Candido |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2024 |
| Pages: | 288 pages |
| ISBN: | 978-1-998384-18-1 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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GREEN COMPOSITES WITH EUCALYPTUS NANOFIBERS TO ADSORB PETROLEUM
Ana Paula Soares1; Michelle Mothé1; Maria de Fatima Marques1; Sergio Monteiro2;1FEDERAL UNIVERSITY OF RIO DE JANEIRO, Rio de Janeiro, Brazil; 2MILITARY INSTITUTE OF ENGINEERING, Rio de Janeiro, Brazil;
Type of Paper: Regular
Id Paper: 297
Topic: 18
Abstract:
The use of cellulose nanofibers and post-use coffee capsules for composites is a sustainable option to minimize environmental impacts, reduce waste generated, and add value to the materials [1]. Applying these composites as adsorbent material is a promising solution to guarantee a circular economy aimed at sustainability, making it possible to integrate the environmental problems caused by plastic and forestry waste with the remediation of areas affected by oil spills [2]. In obtaining cellulose nanofibers, the bark fibers and chips were pre-treated with an alkaline solution to remove amorphous components such as lignin and hemicellulose and subjected to the steam explosion process for defibrillation [3,4]. Polymeric composites were obtained with a coffee capsule matrix reinforced with 5, 10, and 20% (m/m) of bark and chips. These composites were used to obtain test specimens and were subjected to tests to evaluate the oil adsorption capacity. The thermal analysis results (TG/DTG and DSC) showed that the alkaline treatment followed by steam explosion increased the thermal stability of the fibers present in the Eucalyptus bark and decreased the stability of the chip flakes. The micrographs showed better adhesion of cellulose nanofibers from the bark and chip chips to the polymer matrix than cellulose microfibers. The BET/ BJH results showed that the bark has a larger surface area and larger pore volume but a smaller pore size, which may influence adsorption. Alkaline and steam explosion treatments increased the crystallinity of all samples. Specimens obtained from composites reinforced with 20% m/m of exploded showed the best adsorption efficiency, representing an unprecedented and encouraging result.