- Date
- 09 November 2021
- Time
This event has now ended
Overview
Research has shown that soils containing crushed concrete, brick demolition and basic igneous rocks can remove substantial amounts of CO2 from the atmosphere through the formation of soil carbonates. This is an innovative technique of extracting CO2 from atmosphere which takes into account both climate change on waste management.
The formation of soil carbonates, which are predominately composed of CaCO3, depends on two main factors: (i) the availability of calcium; and (ii) carbonate in solution. Calcium is naturally derived from the weathering of silicate minerals (plagioclase feldspars, pyroxenes etc.) that commonly occur in basic igneous rocks (for example basalts and dolerites), or from artificial calcium silicate and hydroxide minerals within concrete and cement.
Carbonate carbon is mainly derived ultimately from photosynthesis, based on stable isotope studies.
During the process, silicate minerals, in particular calcium silicates, react with dissolved CO2 to form carbonates. This leads to the removal of atmospheric CO2 and its subsequent storage in a stable, inorganic state. Once formed within the substrate, this is a permanent store for CO2.
More like this
- Type
- Lecture
Performance-based structural fire engineering in the energy industry
The talk explores performance-based fire safety strategies for energy infrastructure, highlighting case studies that enhance safety, reduce downtime, and support sustainability through advanced modelling and interdisciplinary collaboration.
- Type
- Webinar
From IPD to professional review
Join this live lunchtime session designed for early-career civil or infrastructure graduate engineers or apprentices in the Republic of Ireland as we unpack ICE’s Initial Professional Development (IPD) journey.
- Type
- Webinar
Designing for all: blind and partially sighted perspectives
This talk from the Royal National Institute of Blind People will focus on inclusive design and the challenges faced by blind or partially sighted individuals. The session aims to equip civil engineers with the knowledge and insights needed to create environments that are accessible to all.