التفاصيل البيبلوغرافية
| العنوان: |
OPTIMIZATION OF A CONSTRUCTED WETLAND-MICROBIAL FUEL CELL SYSTEM FOR Cr(VI) REMOVAL FROM WASTEWATER AND POWER GENERATION PERFORMANCE. |
| المؤلفون: |
YUCUI SHI, YONGWEI LI, QING LIU, SHAOHONG YOU |
| المصدر: |
Environment Protection Engineering; 2024, Vol. 50 Issue 2, p41-60, 20p |
| مصطلحات موضوعية: |
MICROBIAL fuel cells, FUEL cells, FUEL systems, SEWAGE, POWER density, CONSTRUCTED wetlands |
| مستخلص: |
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. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
