Cathode, electrochemical cell and its use
AssigneeHöGanäS AB (Publ)
InventorsMadan Tandukar, Kyle Unger, Paul Endler
Life of this patent
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Abstract
An electrochemical cell containing a sacrificial electrode suitable for electrocoagulation as well as an electrocoagulation process for removing various pollutants from water or wastewater by the use of the electrochemical cell. Also, the sacrificial electrode itself. Several electrochemical cells can be coupled to an electrochemical cell assembly. Certain aspects and embodiments are especially suitable for reduction of fluoride or fluoride in combination with heavy metals such as hexavalent chromium or arsenic.
Claims25
A sacrificial anode containing a compacted sacrificial part and a non-sacrificial electrical conductive part, the sacrificial part having porosity between 20-60% by volume and containing iron powder, wherein, in the iron powder, the amount of particles below 45 μm is at most 20% by weight.
A method for removal of pollutants from water by electrocoagulation comprising:
- providing at least one electrochemical cell containing a sacrificial electrode and a cathode, and
- contacting water to be purified with the at least one electrochemical cell while supplying an electric potential difference between the cathode and the anode,
- wherein the sacrificial electrode is a sacrificial anode containing a compacted sacrificial part and a non-sacrificial electrical conductive part, the sacrificial part having porosity between 20-60% by volume and containing iron powder, wherein, in the iron powder, the amount of particles below 45 μm is at most 20% by weight.
Dependencies are inferred from the claim text.