Preparação e caracterização de carvão ativado produzido a partir de resíduos do beneficiamento do café Preparation and characterization of activated carbon produced from coffee waste

• Main Authors: Sarah Silva Brum, Maria Lucia Bianchi, Vanésia Liane da Silva, Maraísa Gonçalves, Mário César Guerreiro, Luiz Carlos Alves de Oliveira
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2008-01-01
• Series: Química Nova
• Subjects: activated carbon; coffee waste; adsorption
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000500019

<abstract language="eng">Coffee fruit processing is one of the most polluting activities in agriculture due to the large amount of waste generated in the process. In this work, coffee parchment was employed as precursor for the production of carbons activated with ZnCl2 (CAP). The material was characterized using N2 adsorption/desorption at 77 K, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The material showed a surface area of 521.6 m²g-1 and microporous structure. CAP was applied as adsorbent for the removal of methylene blue dye in aqueous medium. The adsorption capacity was found to be about 188.7 mg g-1.