Performance of sulfite/FeIIIEDTA fuel cell: Power from waste in flue gas desulfurization process
| Autor: | Kwiyong Kim, Seonjeong Cheon, Jong-In Han, Hyung Chul Yoon |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Flue gas
Chemistry General Chemical Engineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences Anode Flue-gas desulfurization chemistry.chemical_compound Chemical engineering Sulfite Oxidizing agent Environmental Chemistry 0210 nano-technology Dissolution NOx Sulfur dioxide |
| Zdroj: | Chemical Engineering Journal. 375:122008 |
| ISSN: | 1385-8947 |
| DOI: | 10.1016/j.cej.2019.122008 |
| Popis: | In conventional flue gas desulfurization processes, a large amount of sulfite (SO32−) is produced as a byproduct through dissolution of SO2(g). Meanwhile, sulfite has a strong oxidizing power in an alkaline condition ( E 0 = −0.93 V vs SHE), so we designed a fuel cell utilizing sulfite as a fuel and examined its performance. In the fuel cell, sulfite is oxidized at the anode into non-hazardous and stable sulfate. Simultaneously, FeIIIEDTA (ferric ethylenediaminetetraacetic acid) is reduced at the cathode, since the reduced form, FeIIEDTA, can be an effective nitric oxide absorbent in a flue gas NOx removal process. Cell performance was enhanced with pH of electrolyte and operating temperature adjustments. The highest power density was 7.51 mW cm−2 in strong alkaline anolyte and acidic catholyte conditions at 80 °C. This study shows that the chemical energy in waste originating from air pollutants could be a good electricity source. |
| Databáze: | OpenAIRE |
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