The reporter recently learned from the Institute of Ecology and Environmental Governance of Hebei University that Wang Hongjie’s team recently published an online review titled "Constructed Wetlands—Operational Mechanisms and Production Mechanisms of Microbial Fuel Cell Technology for Wastewater Treatment" in Bioresources Technology. paper. This paper reviewed for the first time the decontamination generation mechanism of the constructed wetland-microbial fuel cell coupling system, and discussed the operating mechanism of key components such as microorganisms, wetland plants, electrodes, and substrates.
"The research team uses the synergy of physics, chemistry, and biology to comprehensively treat sewage from constructed wetlands. On the basis of collaborative decontamination, microbial fuel cells can use microorganisms to degrade organic matter and convert chemical energy in organic matter into electrical energy. "Wang Hongjie said that the application of the constructed wetland-microbial fuel cell coupling system to sewage treatment is a method that combines sewage treatment and electricity generation, and has broad application prospects and development value. Relatively independent constructed wetland system, the electrochemical mechanism of anodic oxidation and cathode reduction is the core to improve the water treatment effect of constructed wetland-microbial fuel cell. As the dominant flora, the abundance of electroactive bacteria and gene expression patterns will affect the operating efficiency of the coupled system. Wetland plants promote chemical oxygen demand removal and denitrification by providing oxygen and rhizosphere exudates. Multi-electrode configuration, carbon-based electrodes and porous matrix affect the transmission resistance and microbial community distribution.
This review reveals in-depth the operating mechanism of the constructed wetland-microbial fuel cell coupling system, which has guiding significance for guiding the construction of an efficient decontamination process system for the coordination of electricity generation systems.
Based on this review, Wang Hongjie’s team built a combined treatment system for organic micro-polluted water based on constructed wetlands and microbial fuel cells. Based on the in-depth discussion of the mechanism of collaborative decontamination, the team hopes to establish an efficient purification process for organic micro-polluted water based on this system. (Reporter Gao Changan)
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