How to engineer the CO2 value-chain

“It takes time and effort to understand the challenges,” said DNV Maritime principal engineer Gabriele Notaro in this sound clip from Riviera’s CO2 Shipping & Terminals Conference in London, which was held at the Hilton Waldorf on 19 June 2025.

He provides a broader view of the role impurities play in vapour return handling. Unlike commercial liquefied gases such as LPG or LNG, captured CO2 is often not subject to purification unless required by the receiver. This leads to variable levels of impurities such as oxygen, nitrogen, argon, sulphur oxides and water. These impurities affect both vapour composition and the physical behaviour of the CO2 stream. Their presence also alters the safety case.