Constructed wetland-microbial fuel cells enhanced with zero-valent iron for wastewater treatment and power generation

The performance of constructed wetland microbial fuel cells (CWMFC) was enhanced by synergy with zero-valent iron-activated carbon (ZVI/AC) micro-electrolysis reactions. The experimental group (“Group-ZVI”) removed 12.7% more chemical oxygen demand (COD; 79%) than the control group (“Group-CK”) thro...

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Veröffentlicht in:	International biodeterioration & biodegradation 2020-09, Vol.153, p.105048, Article 105048
Hauptverfasser:	Dai, Mei-Xue, Li, Ye-Xuan, Li, Pengfei, Guo, Wenhan, Qi, Xiaoyu, Zhang, Yujia, Kong, Qiang
Format:	Artikel
Sprache:	eng
Schlagworte:	Activated carbon Artificial wetlands Biochemical fuel cells Chemical oxygen demand Chemical reactions Closed loops Constructed wetland microbial fuel cell (CWMFC) Electrolysis Electrolytic cells Electron transfer Fuel cells Fuel technology Iron Micro-electrolysis Microbial community Microorganisms Oxidation Performance enhancement Wastewater treatment Water treatment Wetlands Zero-valent iron-activated carbon (ZVI/AC)
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Zusammenfassung:	The performance of constructed wetland microbial fuel cells (CWMFC) was enhanced by synergy with zero-valent iron-activated carbon (ZVI/AC) micro-electrolysis reactions. The experimental group (“Group-ZVI”) removed 12.7% more chemical oxygen demand (COD; 79%) than the control group (“Group-CK”) through ZVI micro-electrolysis oxidation reactions. The presence of ZVI significantly increased the average voltage (326 ± 1.08 mV in Group-ZVI, 176 ± 1.15 mV in Group-CK) and power density (2.03 mW m−2 in Group-ZVI, 1.32 mW m−2 in Group-CK) compared with the control group by accelerating the electron transfer rate and enriching the community of electrochemically active bacteria (p
ISSN:	0964-8305 1879-0208
DOI:	10.1016/j.ibiod.2020.105048