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The Active Fe range is a range of non-hazardous iron products supplied to the anaerobic industry for the minimisation of hydrogen sulphide levels in the fermenter.
Biogas can often contain hydrogen sulphide which needs to be removed to avoid odour and corrosion issues occurring which can cause structural damage to the fermenter, the CHP engines and reduce the performance of the biology in the plant. These high concentrations of dissolved H2S can be toxic to the microorganisms in the digestate, which can inhibit the production of biogas and cause its’ quality to deteriorate. The presence of hydrogen sulphide in biogas makes it corrosive to metal parts. Iron is subject to surface attack, although not major corrosion and helps to minimise these hydrogen sulphide levels.
Active Fe binds the hydrogen sulphide immediately before formation therefore allowing the AD process to occur uninhibited resulting in optimal biogas yields and methane content. Active Fe also prevents acidification and corrosion of the tank and metal parts.