WUQing,MOWen-jun,LIQian-nan,et al.Plant Cathode-Sediment Microbial Fuel Cell for Restoration of Chromium-containing Wastewater[J].China Water & Wastewater,2024,40(7):27-35.
Plant Cathode-Sediment Microbial Fuel Cell for Restoration of Chromium-containing Wastewater
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第7期
Page:
27-35
Column:
Date of publication:
2024-04-01
- Keywords:
- plant cathode-sediment microbial fuel cell; chromium-containing wastewater; sediment; cathode material
- Abstract:
- This paper applied the plant cathode-sediment microbial fuel cell (PC-SMFC) system to treat chromium-containing wastewater and sediment, and investigated the effects of cathode materials and plants on the pollutants removal performance and power generation capacity of the PC-SMFC system. The PC-SMFC with cathode current collector of stainless steel mesh and plant of calamus showed the best treatment performance. When the initial concentration of Cr6+ and COD in the overlying water was 108.14 mg/L and 978 mg/L, the maximum output voltage and power density were 0.499 0 V and 14.87 mW/m2, respectively. The removal rates of COD and Cr6+ in the overlying water were 93.66% and 99.29% respectively, the removal rates of organic matter and Cr6+ in the sediment were 15.69% and 79.11% respectively, and the fixation rate of total chromium was 65.33%. After treatment by the PC-SMFC system, the bioavailable chromium in the sediments of each system was transformed into stable Fe-Mn binding state and residual chromium, meaning that PC-SMFC promoted the stabilization of chromium in the sediment.
Last Update:
2024-04-01