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US 2021/0276891 A1Published application
System and method for removing nitrate from water
AssigneeIowa State University Research Foundation, Inc.
InventorsWenzhen Li, Hengzhou Liu, Yifu Chen
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Abstract
The present application relates to a system for removal of nitrate from water. The system includes a first reactor comprising a porous oxide-derived silver electrode (OD-Ag) for electrocatalytic reduction of nitrate (NO3−) to nitrite (NO2−) and a second reactor comprising a Pd-based catalyst for catalytic reduction of nitrite (NO2−). Also disclosed is a method of removing nitrate from water.
Claims20
A system for removal of nitrate from water, said system comprising:
- a first reactor comprising a porous oxide-derived silver electrode (OD-Ag) for electrocatalytic reduction of nitrate (NO3−) to nitrite (NO2−) and
- a second reactor comprising a Pd-based catalyst for catalytic reduction of nitrite (NO2−).
A method of removing nitrate from water, said method comprising:
- providing a system comprising:
- a first reactor comprising a porous oxide-derived silver electrode (OD-Ag) for electrocatalytic reduction of nitrate (NO3−) to nitrite (NO2−) and
- a second reactor comprising a Pd-based catalyst for catalytic reduction of nitrite (NO2−);
- introducing water containing nitrate (NO3−) into the first reactor to cause catalytic reduction of the nitrate into nitrite (NO2−) by the porous oxide-derived silver electrode (OD-Ag);
- and
- introducing water from the first reactor into the second reactor to cause reduction of nitrite (NO2−) by the Pd-based catalyst, thereby removing nitrate from the drinking water.
3 more elements
Dependencies are inferred from the claim text.