Abstract – PCCC7: Development needs and knowledge gaps of CESAR1 solvent

από | Νοέ 7, 2023

Reducing carbon dioxide (CO₂) emissions is one of the most critical challenges in combating climate change. To address this, scientists are developing technologies that can capture CO₂ released from industrial plants and power stations.

Among the various methods available, amine-based absorption is currently the most developed and cost-effective option for capturing CO₂ after combustion (known as post-combustion CO₂ capture). However, this method requires a significant amount of energy, which has spurred efforts to find more energy-efficient alternatives.

Read the whole abstract

One promising alternative to the widely used solvent ethanolamine (MEA) is CESAR1, a blend of two chemicals—2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ). Specifically, CESAR1 contains 3.0 M (molar concentration) AMP and 1.5 M PZ. Research has shown that CESAR1 performs better than MEA in several key areas:

  • Lower energy consumption: It requires less energy to absorb and release CO₂, making it more efficient.
  • Lower degradation rates: The solvent breaks down more slowly, which extends its lifespan and reduces waste.
  • Higher CO₂ loading capacity: CESAR1 can absorb more CO₂ per unit of solvent, improving its overall performance.

Another advantage of CESAR1 is its non-proprietary nature, meaning it is not tied to any specific technology provider. This makes it accessible to more industries and a strong candidate to replace MEA as the standard solvent for CO₂ capture.

The combination of lower energy use, slower degradation, and higher efficiency makes CESAR1 a highly attractive solution for large-scale CO₂ capture. If implemented widely, it can help reduce the energy costs and environmental impacts of capturing CO₂, contributing to global climate goals.

This research has received funding from the European Union’s Horizon Europe research and innovation programme under grant agreement No. 101096521.

Check out the author's presentation

Publication – Development of a Validated Rate-Based Model

|

Abstract In this work, we developed a new e-NRTL thermodynamic framework for CO2 absorption in aqueous mixtures of 2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ) in Aspen Plus. The e-NRTL AMP/PZ/H2O/CO2 model was fitted on experimental data covering a range of AMP concentration from 12 to 48 mass % and PZ concentration…

Publication – Pilot-scale CO2 capture in a cement plant with CESAR1

|

Abstract Carbon capture from hard-to-abate industries is essential. This study investigates the effect of stripper pressure on the performance of amine-based CO2 capture from cement flue gas, using the CESAR1 solvent. Through a rigorous data filtering and binning methodology, experimental results were systematically categorized, enabling a precise evaluation of how…

New Publication: Aerosol Modeling in CO2 absorption using CESAR1

|

We are proud to announce that Hallvard F. Svendsen, Hanna K. Knuutila, Ardi Hartono, Maxime Francois and Diego Morlando at NTNU, together with external collaborators Peter Moser (RWE) and Georg Wiechers (RWE) have published a new article presenting results from the AURORA and SCOPE projects.The publication introduces a new class-based…

Conference publication – GHGT-17: “Storage potential evaluation of eastern Mediterranean area as final step of the full chainassessment”

|

The final step in capturing and storing carbon dioxide (CO₂) emissions is geological storage, where CO₂ is injected deep underground into carefully chosen locations. These locations could be natural formations like saline aquifers (underground reservoirs filled with salty water) or empty oil and gas fields.This work, part of the AURORA…

Turning Waste Into Opportunity: Thermal Reclamation Chemistry of Common Amine Solvents

|

CO2 capture technology is vital for reducing greenhouse gas emissions. But what happens when the chemicals used in this process wear out or degrade? Scientists have been studying how to rejuvenate these chemicals through a method called thermal reclaiming. This research focuses on ethanolamine (MEA), a widely used solvent for…

Closing Knowledge Gaps – Density and Viscosity of Unloaded and CO2-loaded Aqueous AMP-PZ blends  

|

AURORA’s latest scientific journal publication provides experimental density and viscosity data on different unloaded and CO2-loaded aqueous blends of  2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ) used for absorption-based CO2 capture. The paper also provides correlations for density and viscosity suitable for various modelling works.In our previous review article, we identified knowledge…