New ecological dam for sediment and overlying water pollution treatment based on microbial fuel cell principle
- 65 Downloads
In this study, a new ecological dam based on the microbial fuel cell principle (MFCED) was designed to remove pollutants from river sediments and water bodies. Sediment organics were better removed in the MFCED mode in comparison with the other two modes (ecological dam with open circuit (OCED) and ecological dam filled with gravel in cathode chamber (GMFCED)). The difference of nitrogen source in water had little effect on the removal of chemical oxygen demand (COD) (70–80%), while nitrate was more readily removed in the MFCED. The voltage curve and power curve were measured to understand the bioelectricity generation of MFCED. During the stable operation phase of MFCED, the voltage was stabilized between 0.09–0.15 V. The results of high-throughput sequencing indicated that the anode and cathode diversities of MFCED were more than the other systems, and the species diversity of the anode was more than that of the cathode in the MFCED.
KeywordsMicrobial fuel cell Nitrogen removal Organic pollutant removal Microbial community
Also, the authors express gratitude to the Modern Analysis and Computing Center of Zhengzhou University for the various material analyses offered in this study.
Support was by Major Science and Technology Program for Water Pollution Control and Treatment (Grant No. 2015ZX07204-002-004) and the National Natural Science Foundation of China (Grant No. 21806145).
- Gong X, Huang D, Liu Y, Zeng G, Wang R, Wan J, Zhang C, Cheng M, Qin X, Xue W (2017) Stabilized nanoscale zero-valent iron mediated cadmium accumulation and oxidative damage of Boehmeria nivea (L.) Gaudich cultivated in cadmium contaminated sediments. Environ Sci Technol 51(19):11308–11316CrossRefGoogle Scholar
- Patil SA, Surakasi VP, Koul S, Ijmulwar S, Vivek A, Shouche YS, Kapadnis BP (2009) Electricity generation using chocolate industry wastewater and its treatment in activated sludge based microbial fuel cell and analysis of developed microbial community in the anode chamber. Bioresour Technol 100(21):5132–5139CrossRefGoogle Scholar
- Xue W, Huang D, Zeng G, et al. (2017) Nanoscale zero-valent iron coated with rhamnolipid as an effective stabilizer for immobilization of Cd and Pb in river sediments. J Hazard Mater 341Google Scholar