Abstract

BRUM, Sarah Silva et al. Preparation and characterization of activated carbon produced from coffee waste. Quím. Nova [online]. 2008, vol.31, n.5, pp.1048-1052. ISSN 1678-7064.  http://dx.doi.org/10.1590/S0100-40422008000500019.

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 m² g^-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.

Keywords : activated carbon; coffee waste; adsorption.

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