Study of Porosity and Surface Groups of Activated Carbons Produced from Alternative and Renewable Biomass: Buriti Petiole

• Main Authors: Cristiane Freitas de Almeida, Robson Carlos de Andrade, Giulyane Felix de Oliveira, Patricia Hatsue Suegama, Eduardo José de Arruda, José Augusto Texeira, Claudio Teodoro de Carvalho
• Format: Article
• Language: English
• Published: Universidade Federal de Mato Grosso do Sul 2017-04-01
• Series: Orbital: The Electronic Journal of Chemistry
• Subjects: buriti petiole; activated carbon; ft–ir; tg/dtg/ft–ir; sem; bet
• Online Access: http://orbital.ufms.br/index.php/Chemistry/article/view/878
• ISSN: 1984-6428

<p class="orbitalabstract">This study reports the production of activated carbon (AC) from chemical activation with sodium hydroxide in pyrolysis temperature of 500 to 600 °C using alternative and renewable material, Buriti petiole. The characterization of the material was performed by simultaneous thermogravimetry-differential thermal analysis (TG–DTA), scanning electron microscopy (SEM), nitrogen adsorption–desorption isotherms at -196 °C by the BET (Brunauer, Emmett and Teller) and BJH (Barrett, Joyner and Halenda) methods for mesoporous materials. Infrared spectroscopy (FT–IR) and TG/DT–FTIR coupled system were used to study the surface groups. Adsorption tests for the activated carbons samples (ACs) were carried out using the methylene blue (MB) cationic and anionic orange G (OG) dyes, the most satisfactory results were methylene blue dye. These results indicated the formation of mesoporous adsorbent materials with BET surface areas obtained between 340 m²g^-1 and 1715 m²g^-1. The chemical activation of the carbons with sodium hydroxide produced highly mesoporous material suitable for adsorption of cationic and anionic dyes in aqueous solution.</p><p class="orbitalabstract"> </p><p class="orbitalabstract">DOI: <a href="http://dx.doi.org/10.17807/orbital.v9i1.878">http://dx.doi.org/10.17807/orbital.v9i1.878</a></p>