ETH Min-Carb - Mineral carbonation: flue gas mineralization unit

Facility Location
City & country
Zürich (Switzerland)
Rämistrasse 101, 8006
Description & contacts of the access provider
Legal name of organisation
ETH-Z - Eidgenössische Technische Hochschule Zürich
Infrastructure contact - Primary contact
Marco Mazzotti
RICC contact - Secondary contact
Alba Zappone
Facility Availability
Unit of access
Availability per year
Minimum 1 month
Expected duration of single experiment:
1 month

The unit allows for parametric kinetic studies of mineral dissolution and precipitation reactions. The Facility is a temperature (30-180°C) and pressure (3.6/7 – 40/150 bar) controlled continuous stirred tank reactor (CSTR) with the feature of gas flow through at elevated pressure and any composition (e.g. synthetic flue gas). Residence times for reactor solution and gas phase can be adjusted independently. The rig is automated via LabViewTM routine, hence experiments can be performed in stand-alone mode. Analytical tools included are insitu Raman spectroscopy for solids and molecules in solution, inline ion chromatography for cations in solution, inline pH meter, fractionator (sample collector) for offline analysis of other solutes, and mass spectroscopy for gas composition.

Simplified flow sheet of the flue gas mineralization unit (Mineral Carbonation Rig)
State of the art, uniqueness, & specific advantages

TA11.3 presents the advantage of direct CO2 removal from flue gas by mineralization using various magnesium and/or calcium containing source materials (activated minerals, industrial residues). Its uniqueness lies in the high pressure liquid and gas flow-through set-up, with innovative solid sample loading system.

Scientific Environment

The installations are designed for CO2 capture research. In-house activity based thermodynamic and kinetic models can be used to model the experimental results. Additionally in-house lab equipment for offline analysis of solids related to crystallization research (XRD, TGA, SEM, PSD) can be used to find the speciation in the solids.

The current users at ETH have obtained many scientific achievements based on the services offered by the infrastructures, including EU projects, industrial and National Funded Research projects, and have produced many peer-reviewed scientific papers.


Other Large Initiatives

selected publications

Werner M., Hariharan S., Mazzotti M. (2014)
Flue gas CO2 mineralization using thermally activated serpentine: From single- to double-step carbonation
Physical Chemistry Chemical Physics, vol. 16, pp. 24978-24993
Werner M., Hariharan S., Zingaretti D., Baciocchi R., Mazzotti M. (2014)
Dissolution of dehydroxylated lizardite at flue gas conditions: I. Experimental study
Chemical Engineering Journal, vol. 241pp. 301-313
Hariharan S., Werner M., Hänchen M., Mazzotti M. (2014)
Dissolution of dehydroxylated lizardite at flue gas conditions: II. Kinetic modelling
Chemical Engineering Journal, vol. 241, pp.314-326