P-5 Large algae culture experiments using blast furnace slag

Abstract

The current utilization of large-sized algae culture is difficult because deep sea water and nutrition salt are expensive. Iron and steel slag contains silicon and iron minerals necessary for the growth of algae. In this research, blast furnace slag we used as substitution of nutrition salt for cost reduction. We followed by the addition of carbon dioxide to aim to further growth. We are conclude that can be used slag to culture a large sized algae.