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May 31, 2004 - Teng, 2000). Almost any carbonaceous material can be con- ... 1000 m²/g and pore volume 0.50 cm/g. Baquero et al. ... application of coffee residues, as activated carbons by. ZnCl, and ... preparation of activated carbon in the present study. The coffee ... of a nitrogen molecule to be 0.162 nm². In addition,.