- Tytuł:
- Optimization of A constructed wetland-microbial fuel cell system for Cr(VI) removal from wastewater and power generation performance
- Autorzy:
-
Shi, Yucui
Li, Yongwei
Liu, Qing
You, Shaohong - Tematy:
-
chromium compounds
microbial fuel cells
hydraulic retention
wetland
związki chromu
mikrobiologiczne ogniwa paliwowe
retencja hydrauliczna
mokradło - Pokaż więcej
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Powiązania:
- https://bibliotekanauki.pl/articles/58971766.pdf Link otwiera się w nowym oknie
- Opis:
- A new type of bioelectrochemical system features a constructed wetland (CW) coupled with a microbial fuel cell (MFC) to treat Cr(VI) wastewater while generating electricity. The optimal operating parameters for treating wastewater containing Cr(VI) are discussed. The results show that the CW- -MFC system is more effective in the treatment of Cr(VI)-containing wastewater and generating electricity. A COD concentration of 300 mg/dm3 corresponded to the greatest COD and Cr(VI) removal rates with a maximum power density of 505.62 mW/m3, whereas a Cr(VI) concentration of 80 mg/dm3 yielded the greatest COD removal rate, with a maximum power density of 484.43 mW/m3. A hydraulic retention time (HRT) of 3 days yielded the largest pollutant removal rates with a maximum power density of 479.21 mW/m3. Considering that the comprehensive operating conditions of CW-MFC are based on planting plants, the COD concentration is 300 mg/dm3, the Cr(VI) concentration is 80 mg/dm3, and the HRT is 3 days. The abundance of electrogenic bacteria Geobacter and metal dissimilatory reducing bacteria Acinetobacter in CW-MFC is higher than that in the control group. The results of this study provide theoretical guidance for determining the optimal operating conditions and energy recovery of the CW-MFC system for treating chromium wastewater.
- Dostawca treści:
- Biblioteka Nauki
Artykuł