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BDD Electrode

Water treatment with BDD (Boron Doped Diamond) electrodes can be divided into the areas of disinfecting and waste water treatment. Both areas have, in common, the fact that with the assistance of an electrochemical procedure impurities such as bacteria, viruses, algae, oils, emulsions, chemical and pharmaceutical residues may be removed. A remarkable fact about using BDD electrodes is the extremely high over-voltage exhibited for water electrolysis. Instead of the production of oxygen extremely effective OH radicals are formed directly from the water without any additional chemical input. Through the efficient use of electrochemical

procedures, using BDD electrodes, it is possible to replace existing procedures and to be prepared for further future requirements. It is possible to save both on space and maintenance costs and to be ready for the future through a simple scale up procedure.

BDD properties

■  Electrically conductive (Typically 0.4~1.0 x 10-3 Ω.cm)

■  Wide electrochemical window for e.g. O3 and OH production

■  Bio-compatible

■  Varied surface terminations possible

■  Chemically inert up to 600 oC

■  No-fouling

■  Mechanically robust

■  No-Porous

Electrochemical window

Courtesy of Karl-Winnacker-institut


Electrochemical applications:

■  Decomposition of cyanide in hardening shop wastewater.

■  CN reduction (61h): 69.4% (PbO2), 95.3%(BDD)

■  COD reduction (61h): 57.6%, 80.4% (BDD)


Courtesy of Dr. Horstkotte, TU Munich