Activated charcoal

摘要

The invention provides a method for preparing activated charcoal from a precursor material comprising high mineral content plant or algal material by heating the precursor material under suitable conditions sufficient to produce activated charcoal therefrom. The invention also provides various applications of the activated charcoal per se.

主权项

1. A method of making activated charcoal, comprising:
heating a precursor material having a high mineral content to a temperature of between 600° C.-1000° C., for at least 10 minutes to obtain an activated charcoal, wherein the concentration of alkali and/or alkaline earth metals of the precursor material in a dry state is at least 20,000 mg/kg; and no exogenous activating material is added to obtain the activated charcoal and washing the activated charcoal with acid to remove an activating mineral ion to reveal a pore structure; and collecting the mineral ion in the acid wash.