Savoie et al. (2025): Novel field trial for ocean alkalinity enhancement using electrochemically derived aqueous alkalinity
Allison M. Savoie, Mallory Ringham, Carolina Torres Sanchez, Brendan R. Carter, Sean Dougherty, Richard Alan Feely, Dave Hegeman, Julian Herndon, Tarang Khangaonkar, Jeremy Loretz, Tyson Minck, Todd Pelman, Lakshitha Premathilake, Chinmayee Subban, Jesse Vance, Nicholas David Ward, IN: Frontiers in Environmental Engineering
Numerous studies have tested various methods of Ocean Alkalinity Enhancement (OAE) in laboratory or mesocosm studies. However, few field trials have been conducted thus far to release alkaline feedstock into the surface ocean. This manuscript details a first-of-its-kind dispersal of electrochemically derived aqueous alkalinity using the wastewater treatment facility at the Pacific Northwest National Laboratory in Sequim, WA. The alkaline signal was modeled at the facility outfall and monitored throughout the wastewater treatment facility. Description of the scale of the study and monitoring results are valuable input for the mCDR community as more experiments advance to field trial stages and require data for discharge permitting.