Purammon developed a new technology, named W2toH2, which produces green hydrogen from wastewater. It also lowers wastewater treatment costs and carbon footprint.
The new technology harvest chemical energy from the wastewater which enable hydrogen generation with 15%-20% less energy compared to currently available water/alkaline electrolysis systems.
The innovative electro-catalytic reactor that was developed includes unique knowledge in the fields of catalysts, membranes, and structures.
The new hybrid technology uses an asymmetrical feed (wastewater to the anode and a H2SO4 to the cathode) for electrolysis. The technology oxidizes and treat the wastewater in the anodic part of the reactor in a similar way that was commercialized by Purammon in 2018. The process in the cathodic part of the reactor was separated and simultaneously with the wastewater treatment now produces pure hydrogen.
Compensation for anodic reaction power consumption by wastewater treatment
Acidic cathodic reaction reduces the cell potential and the associated power consumption.
Source for protons is wastewater (and not pure water)
Anodic oxidation of the target pollutants requires a lower potential than oxygen.
This reduces power consumption compared to water electrolysis.
Treated water can be reused for plant procedures.
Technology main advantages are:
Other general advantages are:
Onsite produces hydrogen can be used locally to reduce plant energy consumption and eliminate the costs of hydrogen compression and transportation
Hydrogen can be mixed with natural gas to reduce CO2 emissions
Reduce carbon footprint for industrial plants without major changes
Technology main advantages are:
Compensation for anodic reaction power consumption by wastewater treatment
Acidic cathodic reaction reduces the cell potential and the associated power consumption.
Source for protons is wastewater (and not pure water)
Anodic oxidation of the target pollutants requires a lower potential than oxygen.
This reduces power consumption compared to water electrolysis.
Treated water can be reused for plant procedures.
Onsite produces hydrogen can be used locally to reduce plant energy consumption and eliminate the costs of hydrogen compression and transportation
Hydrogen can be mixed with natural gas to reduce CO2 emissions
Reduce carbon footprint for industrial plants without major changes
Other general advantages are:
Polymer electrolyte membrane water electrolysis (PEMWE) cells are electrochemical devices that convert water into hydrogen and oxygen using an electric current.
Typical modern PEMWE cells consists of a solid electrolyte ion conducting membrane which is pressed between an anode and a cathode, which allow transition of water and gases and enclosed by bipolar plates that serve as current collectors.
Purammon developed a highly efficient, zero gap, polymer electrolyte membrane (PEM) electrolyser.
The reactors contain unique features and know-how which allow operation at low voltage and high current density.
Technology main advantages are:
Low operational expenses
High current density
Small footprint
Flexibility
