ACCSESS webinar

ACCSESS Open Webinar – CCUS Regulations, Utilisation and LCA

When: 30 March 2023, 13:00 – 14:00

ACCSESS warmly invites you to its first open webinar. The webinar will comprise three presentations (see below), as well as time for questions.

Update 25/04/2023: You can now view a recording of the webinar (minus Q+A) on YouTube:


Topic 1: Life Cycle Assessment of CO capture, transport and storage value chains

Presenter: Johannes Burger (Institute of Energy and Process Engineering, ETH Zürich)

The transition to net-zero emissions requires large amount of CO₂ to be captured and permanently stored in geological storage. In order to initiate the large-scale deployment of CO₂ capture, transport and storage (CCTS) value chains, immediate deployment of infrastructure is required. The environmental impacts of a value chain relying on ready-to-use technologies instead of optimal ones with long lead times, such as pipelines, is so far unclear. Using a life cycle assessment (LCA), we will present the environmental impact of an exemplary CCTS value chain from Switzerland to Norway that only uses immediately available technologies. Even though the system relies on suboptimal technologies and has not been optimised to have a low-climate impact, it shows the capability to effectively sequester CO₂, without emitting more CO₂ during its life cycle than is stored. We present the share of each of the components of the CCTS value chain in total global warming impact (GWI).

Topic 2: CO₂ utilisation with indirect mineral carbonation of recycled concrete: experimental assessment of a solid-bed reactor for improved calcium extraction.

Presenter: Antonio Gasós (Institute of Energy and Process Engineering, ETH Zürich)

One CO₂ capture and storage solution can be through the indirect mineral carbonation of alkaline industrial wastes using CO₂. In this presentation, we explain how we can use recycled concrete aggregate as the industrial waste stream. We focus on the calcium extraction in the dissolution step of the process, using aqueous ammonium nitrate as a leaching agent. Usually, the dissolution occurs in batch reactors, which are simple to design and build, but whose performance is limited due to solubility limits and kinetics. A novel solid-bed reactor is therefore presented, which has the potential to outperform the dissolution performance of traditional batch reactors, while avoiding the need of an expensive solid filtration unit to recover the leached material.

Topic 3: Legal and regulatory gaps for CO₂ capture, transport and storage deployment

Presenter: Linda Frattini (Institute of Energy and Process Engineering, ETH Zürich)

Carbon capture and storage (CCS) is an emerging technology in Europe. Several industries and European Member States are collaborating to enhance CCS pathways, connecting CO₂ sources, which are mostly from inland Europe, to storage hubs, which are currently being developed in areas such as the North Sea (e.g. in Norway and Iceland). International and European legislation and regulations have already engaged in clearing the path for CCS deployment, but there are still some aspects to be addressed. In this presentation, we provide the CCS community with an overview of the international and European legal and regulatory landscape relevant to the large-scale deployment of CCS.