Direct  Energy Production From Hydrogen Sulfide in Black Sea Water - Electrochemical Study

V. Beschkov (Institute of Chemical Engineering, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria)
E. Razkazova-Velkova (Institute of Chemical Engineering, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria)
M. Martinov (Institute of Chemical Engineering, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria)
S. Stefanov (Institute of Chemical Engineering, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria)

Article ID: 1340

Abstract


A sulfide driven fuel cell is proposed to clean the Black Sea with the simultaneous A sulfide driven fuel cell is proposed to clean the Black Sea with the simultaneous production of energy. The process is hopeful even at low sulfide concentrations, i.e.10 to 25 mg/l being close to the ones in the Black Sea water. The main problem for the practical application of this type of fuel cell are the low current and power densities. The measurement of the generated electric current compared to the sulfide depletion show that the most probable anode reaction is oxidation of sulfide to sulfate. It is evident that parasite competitive reactions oxidation of sulfide occurs in the anode compartment of the fuel cell. The pH measurements shows that the transfer of hydroxylic anions from the cathodic compartment to the anodic one across the separating membrane is not fast enough to compensate its drop in the anode compartment.


Keywords


Marine water; Hydrogen sulfide; Energy production; Sulfide-driven fuel cell

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References


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DOI: https://doi.org/10.30564/jms.v2i1.1340

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