Techno-economic assessment of a carbon capture and utilization process for the production of plaster-like construction materials
In the context of the decarbonisation of the building sector, this work focuses on the process economics of a carbon capture and utilization alternative for the production of a novel construction material based on magnesium carbonate trihydrate, also known as nesquehonite. This material, after a dehydration-rehydration process, can be conformed into moulds with a significant compressive strength in a very similar mechanism to plasterboard manufacturing. This paper discloses the mass and energy balance of the...
The Conversion of Magnesium Carbonates into Plaster-Like Products: A Preliminary Study of the Hardening Mechanism
Magnesium carbonate trihydrate, nesquehonite, is proposed as a precursor for the production of a construction material similar to plasterboard, in a unique carbon capture and utilisation process [1]. The hardening process is thought to follow a similar mechanism to gypsum in the manufacture of plasterboard, where the hardening is produced in the recrystallization of gypsum crystals. However, nesquehonite [2], during hardening, converts into hydromagnesite, releasing CO2 and H2O during the transformation. In this work, samples...
Conceptual design of a CO2 capture and utilisation process based on calcium and magnesium rich brines
Carbon capture and utilisation processes, CCU, are those processes aiming to produce usable products from CO2-based materials. Although there are a large number of CCU alternatives, only a few are able to propose routes for the massive production of marketable CO2 based products with a negative or neutral carbon footprint in the long term. In this work, a conceptual design of a process aimed to produce a cementitious construction material, based on magnesium carbonate trihydrate,...