Activated carbon from bamboo (Bambusa vulgaris) waste using CO2 as activating agent for adsorption of methylene blue and phenol

• Autor(a) principal: Santana, Gregório Mateus
• Data de Publicação: 2019
• Outros Autores: Trugilho, Paulo Fernando, Borges, Willian Miguel da Silva, Bianchi, Maria Lucia, Paes, Juarez Benigno, Nobre, João Rodrigo Coimbra, Morais, Rayssa de Medeiros
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Ciência Florestal (Online)
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/28648
• topic: Physical activation; Adsorbent development; Environmental applications; Ativação física; Desenvolvimento de adsorvente; Aplicações ambientais

Bamboo (Bambusa vulgaris) waste were used as a raw material for producing activated carbon (AC). The materials were collected and turned into AC by carbonization (500 °C, 1.67 °C.min-1, 60 min) and activation (800 °C, 10 °C.min-1, 60 min) processes with CO2 (100 mL.min-1). The obtained material (CO2 AC) was characterized by its yield, elemental analysis, ash content, methylene blue and iodine indexes, surface area (SBET), Boehm titration method, scanning electron microscopy and used as adsorbent for removing the methylene blue and phenol contaminants. The Langmuir and Freundlich isotherms models were selected for understanding the adsorption process. CO2 AC produced showed yield of 21.6%, carbon content of 82.13% and SBET of 856.78 m2.g-1, presenting rapid removal and high adsorption capacity for methylene blue (298.82 mg.g-1) and phenol (558.29 mg.g-1).