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US 2017/0036983 A1Published application
Ozonized biochar compositions and methods of making and using the same
OwnerJames Weifu Leeinventor
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Abstract
Ozonized biochar compositions and methods for creating advanced hydrophilic biochar materials are provided with higher cation exchange capacity, optimized pH, improved wettability, and free of potential toxic components. These ozonized biochar compositions are used as filtration materials, as biochar soil additives and as carbon sequestration agents to help control climate change for energy and environmental sustainability on Earth.
Claims20
A method for industrial production of an ozonized biochar composition, the method comprising:
- reacting a biochar source with an ozone-containing gas stream in a biochar ozonization treatment reactor system using an ozone-enabled biochar-surface oxygenation operational process that is operated in combination with the use of hydrogen peroxide, wherein reacting the biochar source comprises:
- contacting the biochar source with the ozone-containing gas stream;
- enabling biochar-surface oxygenation;
- destroying a potential biochar toxin;
- producing an ozonized biochar composition having an optimal set of characteristics selected from the group consisting of enhanced cation exchange capacity, optimal pH value, optimal carboxyl content, optimal hydrophilicity and wettability, optimal water-holding field capacity, optimal oxygen-to-carbon molar ratio, surface area, composition, nutrient contents, biochar particle size, uniformity, and any combination thereof;
- and
- producing a special ozonized biochar composition having an enhanced filtration property for removing at least one contaminant from a medium selected from the group consisting of water and air.
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Dependencies are inferred from the claim text.