Abstract: The invention concerns a method for preparing activated carbons based on wood, preferably softwood and in particular pine wood, for making electrodes for energy storage cells, particularly for super-capacitors. Said activated carbons have a volume of mesopores less than 75% of the total pore volume and a volume of micropores less than 57% of the total pore volume. The invention also concerns a method for making an electrode for energy storage cell, comprising the application of such an activated carbon on a support, preferably by coating derived from a slurry. The energy storage cells using said activated carbons advantageously provide a better compromise between energy density and power density.

Abstract: Impure aqueous media, e.g., contaminated white wines or sugar-containing liquors, are purified by (i) immersing therein a package which comprises a unit purifying amount of a characteristically chemical active charcoal powder enveloped within a film of a water-soluble, notably PVA polymer, (ii) permitting such package to dissolve and intimately contacting the active charcoal powder with the impure aqueous medium for such period of time as to sorb the impurities therein onto the active charcoal powder, and (iii) thence recovering and optionally filtering the aqueous medium thus purified, and whereby essentially none of the water-soluble polymer is present therein.