Thekenoloji
Letoto la carbon activated le entsoe ka mashala a boleng bo holimo a khethiloeng ka thata le mashala a kopantsoeng. Ho kopanya phofo ea mashala le tar le metsi, extrusion ea lintho tse tsoakiloeng ho Columnar tlas'a khatello ea oli, e lateloa ke carbonization, activation le oxidation.