Offsetting anthropogenic carbon emissions from biomass waste and mineralised carbon dioxide.

ABSTRACT: The present work investigates biomass wastes and their ashes for re-use in combination with mineralised CO₂ in cement-bound construction products. A range of biomass residues (e.g., wood-derived, nut shells, fibres, and fruit peels) sourced in India, Africa and the UK were ashed and exposed to CO₂ gas. These CO₂-reactive ashes could mineralise CO₂ gas and be used to cement 'raw' biomass in solid carbonated monolithic composites. The CO₂ sequestered in ashes (125-414 g CO₂/kg) and that emitted after incineration (400-500 g CO₂/kg) was within the same range (w/w). The CO₂-reactive ashes embodied significant amounts of CO₂ (147-424 g equivalent CO₂/kg ash). Selected ashes were combine

SUBMITTER: Tripathi N 

PROVIDER: S-EPMC6976572 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature