Iron additives come in powder form, consist of a basis of iron(hydr)oxide, such as FeO (Wüstite), Fe2O3 (Hematite), FeOOH (Goethite). The iron additive reacts with hydrogen sulphide (H2S) in the digester during the process of anaerobic digestion.
FeSfix : iron oxide based on one third FeO and two thirds Fe2O3 with 50% iron (Fe) and natural trace elements.
FeSfix-Red : iron hydroxide based on two thirds FeOOH and a significant amount of Fe2O3 with 50% iron (Fe).
FeSfix-Red Plus : iron oxide based on >80% Fe2O3 with >55% iron (Fe) and an average particle size of 1µm, 25µm or 50µm.
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