Solvent Technology


Task 1.1: Solvent technology

  • Overall objective: To enhance CO2 capture efficiency by increasing cyclic capacity through solvents engineered into liquid-solid phase change in the presence of CO2 at process conditions and to develop a dynamic model to be used for evaluation of solvents under transient conditions.    


Contribution to one or more of the overall goals/objectives of BIGCCS

A tangible objective of BIGCCS is 50% reduction of CO2 capture cost; increased cyclic capacity of CO2 absorbent is directly coupled to capture cost reduction. Dynamic model of a capture process will enhance the reliability. This task contributes to the scientific and technological objective of BIGCCS by knowledge development through high quality research which has been disseminated through conferences and journal publications. This task currently hires a PhD candidate in line with the recruitment objective of BIGCCS.

Achievements thus far

  1. Absorbents that improve capture efficiency due to precipitation at process condition have been identified. Characterization studies have been carried out on the precipitate and the precipitating systems. Initial results have shown that precipitation at process condition results to significant reduction in energy number.
  2. A dynamic process flowsheet model has been developed in Matlab and also linked to the CO2SIM (SINTEF in-house simulation tool for absorption based processes) framework. Dynamic pilot plant campaign is being concluded.

Figure 1: Illustration of the behavior of a precipitating system at process condition and a precipitated solution after absorption. Absorption rate and pH decrease with CO2 absorption followed by a rapid increase in FBRM number at the onset of precipitation.


Contact Bigccs

Task 1.1 leader
Ugochukwu Aronu
+47 48223272