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US 7,678,351 B2Granted
High temperature CO2 capture using engineered eggshells: a route to carbon management
AssigneeThe Ohio State University
InventorsMahesh V. Iyer, Liang-Shih Fan
Life of this patent
Estimating the term…
Abstract
Applying an acid treatment to eggshells provides a sorbent with unexpectedly high CO2 capture capacity and ability to regenerate.
Claims20
A method for producing a sorbent, said method comprising the steps of:
- obtaining an eggshell;
- treating said eggshell with an acid so as to form an acid treated eggshell;
- and
- calcining said acid treated eggshell so as to produce said sorbent.
1 more element
A method for producing a sorbent, said method comprising the steps of:
- obtaining an eggshell;
- treating said eggshell with an acid to separate an organic membrane from said eggshell so as to form an acid treated eggshell;
- and
- calcining said acid treated eggshell so as to produce said sorbent.
1 more element
A method for producing a sorbent, said sorbent method comprising the steps of:
- obtaining an eggshell;
- treating the said eggshell with an acid to separate an organic membrane from said eggshell;
- calcining said eggshell;
- hydrating said eggshell so as to form a hydrated eggshell;
- and
- calcining the said hydrated eggshell to so as to produce said sorbent.
3 more elements
A method for producing a sorbent, said method comprising the steps of:
- obtaining an eggshell;
- treating said eggshell with an acid to separate an organic membrane from said eggshell so as to form an acid treated eggshell;
- and
- calcining said acid treated eggshell so as to produce said sorbent, wherein said sorbent has a CO2 capture capacity of at least about 56% in a first cycle.
1 more element
Dependencies are inferred from the claim text.