Work

A Model of Large Scale Electrochemical Direct Ocean Capture Under Variable Power

Year: 2024

Type: article

Abstract: Since limiting warming to 1.5 degrees C by 2100 will not only require an energy transition but also billions of tons of carbon dioxide (CO2) removal per year, it is essential to expand these efforts. This can be done offshore via electrochemical direct ocean capture (eChem DOC) which extracts CO2 from seawater that can later be stored underground or converted to products. Deployments of eChem DOC will be powered by renewable energy and therefore need to function with variable power inputs. This project aims to support future large-scale deployments by developing a model of eChem DOC operation, informed by industry and literature, and assessing its performance under variable power and varying designs. Initial analysis suggests that discretizing the eChem system has a higher impact on increasing overall capture than storing the chemical solutions to continue capture during periods of lower power availability, but this is likely situation dependent. Future work will use more realistic power profiles.

Source: OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)

Author: Niffenegger, James Salvador; Deutsch, Todd; Lawson, Michael; Thresher, Robert; Brunik, Kaitlin

Institution: National Laboratory of the Rockies

Language: English

Topic: Carbon Dioxide Capture Technologies

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Climate action, Life below water, Industry, innovation and infrastructure

Open Access status: green

Funder: U.S. Department of Energy

Awards: G14908310, G7021897321, G847654844, G944719100