Experimental study on algae enhancement technology by throwing type of iron fertilizer

Fishery resources in the world are decreasing year by year. The reasons are over-catching, change of habitable environments caused by pollution, global environmental change. As a result, especially, seaweed communities which support marine ecosystems are decreasing in the ocean. Algae enhancement technology is, therefore, most important to improve the living environment of seaweed communities. Ferrous sulfate is a micronutrient considered essential to all algae. The ferrous sulfate that is used is an industrial waste which comes from processing titanium ore and it is very expensive to treat this waste. Slag that is used as a core material is also a waste material from steel works. Our special point is to use ocean fertilizer technology, especially, by using a throwing type of iron fertilizer. It becomes harmless that this type of iron fertilizer had transferred the basic behavior of the slag with ferrous sulfate. Our object is to apply algae enhancement technology to real ocean zone by using this throwing type of iron fertilizer. In this paper, the application used by this fertilizer is introduced and discussed.