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A platform for research: civil engineering, architecture and urbanism
Sulfide/Air Fuel Cell for Sulfur Recycling from Sulfide-Containing Wastewater
https://orcid.org/0000-0001-7308-8283
It is preferred to recycle resources and energy from pollutants rather than simply remove them. An energy-free concept for sulfide-containing wastewater utilization is presented here. The two-electron route electro-oxidation of sulfide to sulfur cooperates with the four-electron route oxygen reduction reaction to operate as an abiotic sulfide/air fuel cell. It can recycle sulfur and energy from sulfide-containing wastewater in the meantime. Two types of prototypes are fabricated, where both air-aerated cathode and air-breathing cathode are applied. Here, the fuel cell can achieve an open cell voltage of 0.41 V, a maximum discharge current density of 20.03 mA cm–2, and a maximum power density of 0.90 mW cm–2. A real spent caustic stream is used as the sulfide-containing wastewater. For the sulfide-containing wastewater treatment, the fuel cell can achieve a stable, self-driven discharge at ≥10 mA cm–2, where an air-aerated cathode is applied. The formation of sulfur can be observed. This work presents an attractive strategy for sulfide-containing wastewater reclamation.
An energy-free sulfide/air fuel cell is developed to recycle energy and resources from sulfide-containing wastewater.
Sulfide/Air Fuel Cell for Sulfur Recycling from Sulfide-Containing Wastewater
https://orcid.org/0000-0001-7308-8283
It is preferred to recycle resources and energy from pollutants rather than simply remove them. An energy-free concept for sulfide-containing wastewater utilization is presented here. The two-electron route electro-oxidation of sulfide to sulfur cooperates with the four-electron route oxygen reduction reaction to operate as an abiotic sulfide/air fuel cell. It can recycle sulfur and energy from sulfide-containing wastewater in the meantime. Two types of prototypes are fabricated, where both air-aerated cathode and air-breathing cathode are applied. Here, the fuel cell can achieve an open cell voltage of 0.41 V, a maximum discharge current density of 20.03 mA cm–2, and a maximum power density of 0.90 mW cm–2. A real spent caustic stream is used as the sulfide-containing wastewater. For the sulfide-containing wastewater treatment, the fuel cell can achieve a stable, self-driven discharge at ≥10 mA cm–2, where an air-aerated cathode is applied. The formation of sulfur can be observed. This work presents an attractive strategy for sulfide-containing wastewater reclamation.
An energy-free sulfide/air fuel cell is developed to recycle energy and resources from sulfide-containing wastewater.
Sulfide/Air Fuel Cell for Sulfur Recycling from Sulfide-Containing Wastewater
https://orcid.org/0000-0001-7308-8283
It is preferred to recycle resources and energy from pollutants rather than simply remove them. An energy-free concept for sulfide-containing wastewater utilization is presented here. The two-electron route electro-oxidation of sulfide to sulfur cooperates with the four-electron route oxygen reduction reaction to operate as an abiotic sulfide/air fuel cell. It can recycle sulfur and energy from sulfide-containing wastewater in the meantime. Two types of prototypes are fabricated, where both air-aerated cathode and air-breathing cathode are applied. Here, the fuel cell can achieve an open cell voltage of 0.41 V, a maximum discharge current density of 20.03 mA cm–2, and a maximum power density of 0.90 mW cm–2. A real spent caustic stream is used as the sulfide-containing wastewater. For the sulfide-containing wastewater treatment, the fuel cell can achieve a stable, self-driven discharge at ≥10 mA cm–2, where an air-aerated cathode is applied. The formation of sulfur can be observed. This work presents an attractive strategy for sulfide-containing wastewater reclamation.
An energy-free sulfide/air fuel cell is developed to recycle energy and resources from sulfide-containing wastewater.
Sulfide/Air Fuel Cell for Sulfur Recycling from Sulfide-Containing Wastewater
Wei, Jucai (author) / Wu, Xu (author)
ACS ES&T Water ; 3 ; 3428-3436
2023-10-13
Article (Journal)
Electronic Resource
English
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