Background: Biochar is a primary co-product produced in the manufacturing of biofuels. Converting this waste product into something useable would greatly improve the economic sustainability and viability of the biofuel production process. One potential conversion is activated carbons. All of the current activation processes are expensive and not capable of producing high-quality activated carbons because of high ash content in the starting feedstock.
Description: This technology provides materials and methods for the production of activated carbons from biochar, where such activated carbons have specific area and pore volume characteristics. The activated carbons may be used for any purpose necessitating the need for them, such as water purification, air-cleaning, solvent recovery, catalyst supports and as an energy storage form. They may also be useful in the production of a super anode for a super capacitor or battery.
Advantages: This technology is directed to improve methods for producing high-quality activated carbons from biochar. This technology also provides materials and methods for creation of activated carbons useful for purification of water, adsorption of gases or vapors and catalyst supports. The methods include ash modification, physical activation, the addition of a catalyst, chemical activation, and removal and/or recycling of the catalyst.