Zheng et al. (2025): The potential of wastewater treatment on carbon storage through ocean alkalinity enhancement
Li-wen Zheng, Yubin Hu, Bei Su, Qian-ying Chen and Jihua Liu, IN: Science Advances, https://doi.org/10.1126/sciadv.ads0313
Ocean alkalinity enhancement (OAE) implemented through wastewater treatment plants increases the alkalinity of the effluents and discharges them into the ocean, referred to as wastewater-based OAE. However, the alkalization capability and its carbon storage stability when adding alkaline minerals to wastewater treatment are uncertain. In this study, total alkalinity was enhanced to more than 10 millimoles per kilogram and phosphate removal was improved when the authors added olivine to wastewater in a laboratory setting.