Locking up carbon dioxide is a fool’s errand. We could sequester every bit emitted in industrial processes here in the United States, even most of the “first world” countries, and the “emerging nations” could easily take up the slack and replace all that had been sequestered, and more.
And wait until Africa industrializes on a scale approaching that of the late twentieth century of the rest of the world.
Carbon dioxide is not the culprit here.
Africans must first come to terms with mechanized farming before they move toward an industrial society. Only applied abstract thinking combined with a plan toward future goals, will suffice to gain such a status.