Enzyme-accelerated CO₂ capture and storage (CCS) using paper and pulp residues as co-sequestrating agents.

ABSTRACT: In the present work, four CaCO₃-rich solid residues from the pulp and paper industry (lime mud, green liquor sludge, electrostatic precipitator dust, and lime dregs) were assessed for their potential as co-sequestrating agents in carbon capture. Carbonic anhydrase (CA) was added to promote both CO₂ hydration and residue mineral dissolution, offering an enhancement in CO₂-capture yield under atmospheric (up to 4-fold) and industrial-gas mimic conditions (up to 2.2-fold). Geological CO₂ storage using olivine as a reference material was employed in two stages: one involving mineral dissolution, with leaching of Mg²⁺ and SiO₂ from olivine; and the second involving mineral carbonation, converting Mg²⁺ and bicarbonate t

SUBMITTER: De Oliveira Maciel A 

PROVIDER: S-EPMC10878411 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature