Wang et al. (2023): Feasibility of increasing marine carbon storage through olivine addition
Bin Wang, Xuelu Gao, Jinming Song, Xuegang Li, Huamao Yuan, Lei Xie, Jianmin Zhao, Qianguo Xing, Song Qin IN: Journal of Environmental Chemical Engineering 11 (6), 111221, https://doi.org/10.1016/j.jece.2023.111221
Olivine, (Mg, Fe)2SiO4, is an abundant mineral that can react with CO2 to form carbonates when deliberately introduced into seawater. However, in addition to increasing the additional uptake of atmospheric CO2, it is inevitably accompanied by the release of other elements (e.g. Si, Ca, Mg, Fe and Ni) which could have adverse effects on marine organisms when those elements are at high levels. In this article, the reaction kinetics and mechanisms of olivine dissolution in seawater were introduced, the influencing factors on the olivine dissolution rate under ex situ conditions were highlighted, the possible impacts of the released products on marine organisms (mainly primary producers) and biogeochemical processes controlled by marine organisms were analyzed, and the potential applications to increase marine carbon storage were discussed.