Innovative BOxHy Project Launches to Combat Anoxia in the Baltic Sea

A Groundbreaking Approach to Ocean Reoxygenation

The BOxHy project, coordinated by Flexens and funded by the Baltic Sea Action Plan (BSAP) Fund, has embarked on a novel initiative to address the critical issue of anoxia in the Baltic Sea. The project aims to inject oxygen into the sea through offshore hydrogen production from water electrolysis, an adapted and existing technology. This innovative approach could significantly impact the health of marine ecosystems in the Baltic Sea.

Deep Oxygen Injection (DOI) at the Heart of the Project

DOI, a method where pure oxygen gas is released deep underwater, will be the cornerstone of this initiative. The project is set to identify a suitable fjord-scale pilot site for DOI, including stakeholder engagement and identification of potential funding sources. “Restoring the oxygen conditions of the Baltic Sea deep water would have many positive effects on the ecosystem,” notes Jakob Walve, marine ecologist at DEEP, Stockholm University.

Synergy with Green Hydrogen Production

A unique aspect of the BOxHy project is its symbiotic approach, integrating Baltic Sea restoration with the burgeoning sector of green hydrogen production. Utilizing the oxygen co-produced during water electrolysis for marine ecosystem rejuvenation presents a novel and sustainable solution. Project manager Szilvia Haide from Flexens elaborates on the organization’s role in mapping potential Power-to-X projects and determining electrolyzer capacity requirements.

Innovations and Collaborations Driving the Project

The project benefits from the expertise of French energy company Lhyfe, known for its offshore green hydrogen production facilities, and DEEP at Stockholm University, with its extensive marine monitoring research. The involvement of Lhyfe and DEEP will ensure the effective integration of DOI technology with offshore hydrogen production platforms and the evaluation of suitable coastal bays for oxygenation on a pilot scale.

Expert Advisory Committee to Guide the Initiative

The Science and Technology Advisory Committee (STACO), comprising 9 global experts in oxygenation, will offer crucial guidance, bridging the knowledge gap between science and engineering in oxygenation. The committee, co-chaired by Jakob Walve and Patricia Handmann from Lhyfe, aims to expand the horizons for scientific and industrial applications of oxygenation.

Set to conclude in October 2024, the BOxHy project represents a significant step towards restoring the health of the Baltic Sea, utilizing innovative methods and interdisciplinary collaborations to tackle environmental challenges effectively.