175 results about "Biofuel Cells" patented technology

The invention relates to the technical field of microbial electrochemistry, in particular to a microbial fuel cell self-driven microbial electrolysis cell system and application thereof. The microbial fuel cell self-driven microbial electrolysis cell system comprises a microbial electrolysis cell (MEC) and a microbial fuel cell (MFC) for supplying power to the MEC; an anode electrode of the MFC is a mixed strain immobilized modified carbon felt electrode, and a cathode electrode of the MFC is a modified carbon felt electrode; an anode electrode and a cathode electrode of the MEC are independently selected from one of a modified carbon felt electrode or a mixed strain immobilized modified carbon felt electrode; the mixed strain is a strain obtained by mixing shewanella and sludge bacteria; the anode electrode of the MEC is connected with the cathode electrode of the MFC, and the anode electrode of the MFC is connected with the cathode electrode of the MEC; the bipolar chambers of the MFC are both in an anaerobic state, and the bipolar chambers of the MEC are both in an anoxic state. The advantages of an MFC-MEC system are fully utilized, external power supply is not needed, the MFC supplies energy to the MEC to promote reverse flow of electrons, and electric energy is utilized in situ.

The invention discloses a sulfur autotrophic denitrification filter material enhanced constructed wetland microbial fuel cell sewage treatment system and method, and the treatment system comprises a container main body, the container main body sequentially comprises a gravel water distribution layer, a granular activated carbon anode layer, a sulfur autotrophic denitrification filter material layer, a middle gravel layer, a granular activated carbon cathode layer and a wetland plant layer from bottom to top, anodes are embedded in the granular activated carbon anode layer, cathodes are embedded in the granular activated carbon cathode layer, and the wetland plant layer is arranged in the middle gravel layer. A lead penetrates through the granular activated carbon anode layer and the granular activated carbon cathode layer to connect the anode with the cathode, a water inlet is formed in the gravel water distribution layer, and a water outlet is formed in the wetland plant layer. The constructed wetland microbial fuel cell and the sulfur autotrophic denitrification technology are combined, the dual effects of pollutant removal and electric energy generation are achieved, a new thought is provided for combination of the constructed wetland microbial fuel cell and the sulfur autotrophic denitrification technology, and meanwhile, a new direction is provided for removal of river sewage.

The invention discloses a constructed wetland microbial fuel cell coupling device based on a novel three-dimensional electrode, and belongs to the technical field of sewage treatment, the device comprises a shell, and a bottom layer, an anode layer, a middle layer and a cathode layer are sequentially arranged in the shell from bottom to top. Wherein the bottom layer is filled with coarse gravels, and the middle layer is filled with fine gravels; the anode layer consists of a plurality of titanium tubes which are horizontally arranged and a titanium mesh for connecting the titanium tubes in parallel; openings are formed in the two ends of the titanium tube, through holes are formed in the titanium tube in an array mode, and the titanium tube is filled with a graphite felt core formed in a curled mode. The graphite felt core body can be used for a conductive material strengthening process and can also be used as a supporting material, and compared with an anode cage structure formed by a stainless steel net, the bearing strength is higher; the resistance of the metallic titanium is lower than that of the stainless steel mesh, so that electron transmission and improvement of electron transfer efficiency are facilitated, and the energy recovery efficiency and pollutant removal efficiency of the constructed wetland microbial fuel cell coupling device can be effectively improved.

The invention belongs to the technical field of microbial fuel cells, and particularly relates to a microbial fuel cell, a carbon-based anode and a preparation method of the carbon-based anode. Preparing a polyaniline / dopamine modifier from an aniline monomer and dopamine hydrochloride, and modifying the polyaniline / dopamine modifier on a carbon felt electrode to form a PANI-DA / CF anode; the preparation method comprises the following steps: preparing flower-like Fe2O3 nanoparticles by adopting a hydrothermal method, and electrochemically depositing the flower-like Fe2O3 nanoparticles on a PANI-DA / CF electrode to prepare a Fe2O3 / PANI-DA / CF anode; according to the microbial fuel cell disclosed by the invention, the maximum power density of the phenol wastewater anolyte reaches 4594 + / -97 mW / m < 2 > and is improved by 83.1% compared with that of a carbon felt anode MFC (Microbial Fuel Cell); after operation for 96 hours, the phenol degradation rate reaches 99.4%; and the electricity generation performance is still kept stable after three months of operation. The Fe2O3 / PANI-DA / CF anode provided by the invention improves the power density output of the microbial fuel cell and the wastewater treatment efficiency.

To provide a novel microorganism having higher current generating ability, a microbial fuel cell composition and microbial electrolysis cell composition comprising the microorganism, as well as a microbial electrolysis cell and microbial electrolysis cell using the microorganism.SOLUTION: Provided are: a microorganism, a Geobacter sp. strain 60473; a microbial fuel cell composition comprising the Geobacter sp. strain 60473 and an organic substance; a microbial fuel cell in which the Geobacter sp. strain 60473 is used to decompose the organic substance as a fuel; a microbial electrolysis cell composition comprising the Geobacter sp. strain 60473 and the organic substance; and a microbial electrolysis cell in which the Geobacter sp. strain 60473 is used to decompose the organic substance as the fuel.SELECTED DRAWING: None

The invention discloses a sediment microbial fuel cell sensor and method for monitoring methane emission. The sediment microbial fuel cell sensor comprises an anode, an external resistor, a reference electrode, a reference electrode chamber, a data collector and a monitoring terminal, the anode is buried in wetland bottom mud and is connected in series with the external resistor and the reference electrode; the reference electrode chamber floats in overlying water of wetland bottom mud, the reference electrode chamber is of a hollow cylindrical structure with an open bottom and a sealed top, the bottom of the reference electrode chamber is isolated from the overlying water by adopting a proton exchange membrane, an electrolyte solution is filled in the reference electrode chamber, and the reference electrode penetrates through the top of the reference electrode chamber and is inserted into the electrolyte solution; the external resistor is connected in parallel with a data collector, and the data collector sends collected electric signals to a monitoring terminal. Based on existing researches, the number of electrogenic bacteria in soil and the number of methanogens are found to have high correlation, so that the voltage of the sediment microbial fuel cell can be used as a monitoring index for monitoring the methane emission flux of the methanogens.

The invention relates to a microbial fuel cell and application thereof, in particular to a photocatalytic / microbial coupled anode microbial fuel cell and application thereof in enhanced degradation of sulfamethoxazole. Aiming at the degradation treatment of typical refractory antibiotics such as sulfamethoxazole, the invention provides a photocatalytic / microbial coupled anode microbial fuel cell which can induce a photo-generated hole generated by a photocatalyst through a biological electric field generated by microbial degradation of pollutants, thereby promoting the separation of photo-generated electron hole pairs of the photocatalyst, and further improving the degradation efficiency of the antibiotics. The problem that photo-generated electron hole pairs of a photocatalyst are easy to compound is solved. Meanwhile, due to the existence of the photocatalyst, the electron transfer between the anode electroactive microorganisms and the anode can be improved through the generation of photo-generated holes, and the extracellular electron transfer of the microorganisms is enhanced. When being used for degrading sulfamethoxazole, the photocatalytic / microbial coupled anode microbial fuel cell disclosed by the invention has an extremely important scientific research value and a wide practical application prospect.

The invention discloses a method for monitoring acid-alkali wastewater by using a sediment microbial fuel cell sensor matrix, which comprises the following steps of: arranging the sediment microbial fuel cell sensor matrix in a water body to be detected, and recording the voltage, the conductivity and the dissolved oxygen of each sediment microbial fuel cell sensor in real time and on line through a monitoring terminal; the pH value of the water body at the monitoring position of each sediment microbial fuel cell sensor is calculated through a formula, and a heat map is drawn to display the dynamic change of the pH along with time, so that the diffusion range of the acid-alkali wastewater is monitored, and pollutants are traced. According to the method, the pH and the diffusion range of the sewage can be remotely monitored online in real time, the source tracing of acidic and alkaline sewage is realized, the monitoring result is intuitively presented in a dynamic heat map form, the sensor is light, the labor is saved, the cost is low, and the monitoring process is pollution-free.

The invention belongs to the technical field of biological fuel cells, and particularly relates to an enzyme biological fuel cell system for detecting sugarcane pokkah boeng disease through three signals as well as a preparation method and application of the enzyme biological fuel cell system. The enzyme biological fuel cell system comprises an enzyme biological fuel cell and a photothermal conversion solution TiO2 (at) Au, the enzyme biological fuel cell comprises a biological anode, a biological cathode and an electrolyte, the biological anode is MWNT (at) ZIF-8 / AuNPs / GOD, and the biological cathode is an MWNT (at) ZIF-8 / AuNPs / DNA chain. According to the invention, false positive signals of detection results can be effectively calibrated; through combined use of three detection modes, high sensitivity, selectivity and real-time monitoring capability can be realized, and the method can be used for accurate detection of the sugarcane pokkah boeng rot.

The invention discloses a method for enhanced removal of VOCs (volatile organic compounds) and synchronous power generation by a biological filter bed coupled microbial fuel cell system. According to the method, VOCs are introduced into a cathode chamber of a microbial fuel cell and then upwards penetrate through a filler layer of a fungus-bacterium coupled biological filter bed, in the stage, hydrophobic VOCs are adsorbed by fungal hyphae and then are aerobically degraded by bacteria to generate metabolic intermediates, hydrophilic VOCs can be directly degraded by aerobic bacteria, the purified VOCs are discharged from the top, and the purified VOCs are discharged from the bottom of the microbial fuel cell. Hydrophilic VOCs and metabolic intermediates which are not degraded in time can enter an anode chamber of the microbial fuel cell along with the nutrient solution, and the hydrophilic VOCs and the metabolic intermediates are further degraded as power generation substrates and generate electrons (e <->). According to the invention, the fungus-bacteria mixed biological filter bed is coupled with the microbial fuel cell system for treatment, so that enhanced removal is realized, and high-efficiency power generation is also realized.

The invention discloses a constructed wetland microbial fuel cell coupled photocatalytic system for treating fluorine-containing caprylic acid wastewater, and relates to a constructed wetland microbial fuel cell coupled photocatalytic system. The invention aims to solve the problem that CW-MFC and photocatalysis are not combined to improve the removal rate of PFOA at present. The device comprises a reactor shell, a bottom filler layer, an anode region, a middle filler layer, a cathode region, wetland plants and an outer resistor, the bottom packing layer, the anode region, the middle packing layer and the cathode region are sequentially overlapped in the reactor shell from bottom to top, the cathode region loaded with a photocatalyst is connected with the anode region through an external resistor to form a circuit, a water inlet is formed in the lower part of the reactor shell, and a water outlet is formed in the upper part of the reactor shell. And the roots of the wetland plants penetrate through the cathode region and are planted in the middle filler layer. The invention belongs to the technical field of perfluorinated compound pollution remediation.

The invention relates to the field of industrial wastewater treatment, in particular to a sulfate purification process and system for high-salinity wastewater. The sulfate purification process comprises the following steps: carrying out denitrification nitrogen removal treatment, resin hardness removal treatment, reverse osmosis treatment, electrochemical oxidation treatment and sodium sulfate crystallization treatment on the high-salinity wastewater to finally obtain a sodium sulfate product. The system comprises a denitrification unit, a hardness removal unit, a reverse osmosis unit, an oxidation unit and a crystallization unit according to a material flow. According to the sulfate purification process and the sulfate purification system, a sulfur autotrophic biological fuel cell technology is adopted in denitrification treatment, so that the sulfate purification process and the sulfate purification system have the remarkable characteristics that an organic carbon source does not need to be additionally added, and meanwhile, a main byproduct is valuable sulfate. In addition, the process and the method have extremely high adaptability, can effectively treat a wastewater environment with high total nitrogen, high salt and heavy metal content, and realize resource utilization of industrial wastewater.

The invention relates to a polling type microbial fuel cell energy collection device with multichannel independent maximum power tracking, which takes a microbial fuel cell as an energy source and performs independent maximum power point tracking on each microbial fuel cell accessed into a system by using a polling working mode. Therefore, the overall output power of the microbial fuel cell is improved, and the conversion efficiency is improved.

This invention discloses a CO2 direct air capture system and method for increasing CO2 partial pressure. The system includes a first air pump, a second air pump, a microbial fuel cell device, a CO2 capture device, a rich liquid desorption unit, and a CO2 storage unit. The microbial fuel cell device includes a reactor housing, a proton exchange membrane, wires, and external circuitry. The first air pump is located outside the microbial fuel cell device and pumps ambient air into the cathode chamber. A jacket is provided outside the reactor housing to enclose the reactor housing. The CO2 capture device is a sealed housing with a liquid inlet, a liquid outlet, an air inlet, and an air outlet. The air outlet of the cathode chamber of the microbial fuel cell device is connected to the air inlet of the CO2 capture device via a pipe, and a second air pump is installed on the pipe. The rich liquid desorption unit includes a battery waste heat heating device and an electrically heated desorber. The CO2 storage unit includes a CO2 compressor and a CO2 storage container.

This invention discloses a bioelectrochemical denitrification system using a slow-release carbon source as the anode fuel, belonging to the field of microbial fuel cell technology. It comprises an anode chamber, a cathode chamber, an anode, a cathode, wires, and a separating membrane between the anode and cathode chambers. Electrochemically active microorganisms grow on the anode in the anode chamber, and anaerobic fermentation bacteria are present in the solution. An electrolyte and hydrogel particles with slow-release carbon function are added to the anode chamber. Electrochemically active denitrifying bacteria grow on the cathode in the cathode chamber. The hydrogel-released carbon serves as the solid fuel at the anode, providing a continuous electron donor to the cathode. Simultaneously, the selective permeation membrane controls the transmembrane transport of small organic molecules to the cathode, providing a carbon source for the denitrifying bacteria. The combined supply of electrons and carbon enhances denitrification by the denitrifying microorganisms at the cathode. This system is suitable for enhanced denitrification of polluted water bodies with low C / N ratios.

Disclosed are devices, systems and methods for implantable biofuel cells. In some aspects, a biofuel cell device for extracting energy from a biological fluid includes a substrate including two compartments each with one or more openings; an anode assembly disposed in the substrate and including an anode electrode and functionalization material to facilitate an oxidative process that releases electrons captured at the anode electrode; and a cathode assembly disposed in the substrate separated from the anode assembly and including a catalytic material facilitate a chemical reduction process such that the biofuel cell device extracts electrical energy from the substance in the biological fluid.

The invention discloses a method and a system for degrading RDX wastewater by using a microbial fuel cell, which are characterized in that three MFC devices (classical double-chamber, external photocatalysis combination and photo-anode MFC) are constructed, and TiO2 nanotube photocatalysis material preparation, gradient microbial acclimation and process optimization are combined, so that RDX efficient degradation and electric energy recovery are realized. The RDX molecular structure is destroyed through photocatalysis, and the toxicity is reduced; intermediate products are thoroughly mineralized through microbial metabolism; and the flora adaptability is enhanced by gradient domestication. The embodiment shows that the photo-anode MFC shortens the complete degradation time of the RDX to 7 days, and the electricity generation stability is remarkably improved. The method has high efficiency, economical efficiency and environmental friendliness, and is suitable for energy-containing wastewater treatment and resource utilization.

The present invention provides a conductive hydrogel and its derivatives, carbon nanomaterials, and enzyme bioelectrodes and their applications. The designed and synthesized conductive hydrogel and its derivatives can serve as electrolytes for flexible / rechargeable enzyme biofuel cells, ensuring ion conduction between the enzyme bioanode and enzyme biocathode while also serving as a fuel tank. Furthermore, the use of the hydrogel simplifies and facilitates the assembly of the biofuel cell, allowing the enzyme bioanode and enzyme biocathode to be directly pressed onto the sides of the hydrogel electrolyte plate, thereby eliminating the cumbersome battery assembly and packaging issues. The present invention uses a catalyst to activate asphalt to produce RADC and enzyme bioelectrodes prepared using RADC. The biofuel cell / capacitor hybrid biodevice assembled based on the conductive hydrogel electrolyte and enzyme bioelectrode outputs up to 0.64V OCP and 1.01μW·cm ‑2 It has the maximum power density and has high stability, excellent self-healing, ductility, adhesion, puncture resistance and plasticity.

The invention discloses a nonlinear optimal control method of a microbial fuel cell, and relates to the technical field of energy control. A nonlinear optimal controller can be directly designed for a nonlinear system; the input of the microbial fuel cell is controlled by using nonlinear optimal control, namely dilution rate, and unknown parameters in a nonlinear optimal controller are optimized by using an improved particle swarm algorithm, so that the microbial fuel cell quickly and stably generates maximum output voltage.

The present invention relates to a device and method for controlling algae abundance in natural water bodies based on dual photosynthesis. The device is used to monitor and regulate the abundance of microalgae in the water body. The device comprises a photocatalytically coupled dual-chamber microalgae biofuel cell and a water quality monitoring sensor. The photocatalytically coupled dual-chamber microalgae biofuel cell comprises an anode chamber and a cathode chamber, which are connected by a connecting assembly. The anode chamber is equipped with a photocatalytic microalgae composite anode, a light source, and a stirring paddle, while the cathode chamber is equipped with a microalgae biocathode, algae liquid, and a stirring paddle. The connecting assembly includes a proton exchange membrane. One end of the water quality monitoring sensor is connected to the water body, and the other end is connected to the cathode chamber. The water quality monitoring sensor is used to monitor the abundance of microalgae in the water body and the cathode chamber. The device purifies natural river water and alleviates microalgae outbreaks in river water. The device can dynamically control the abundance of microalgae 24 hours a day.

This invention provides a fluidized bed multi-stage anaerobic process synergistic wastewater treatment and energy recovery system, belonging to the field of wastewater treatment and energy recovery. The system includes a pretreatment module for synergistic wastewater treatment via ultrasonic crushing and enzymatic hydrolysis, a dark fermentation module, an anaerobic digestion module, a microbial fuel cell module, a gas collection module for collecting gases generated by each module, an electrical energy regulation module for applying electrical energy generated by the microbial fuel cell to the dark fermentation and anaerobic digestion modules to form a non-uniform potential field, and a comprehensive regulation module for receiving detection signals and regulating the gas supply. The discharge end of the dark fermentation module is connected to the feed ends of both the anaerobic digestion and microbial fuel cell modules, forming two series paths: dark fermentation-anaerobic digestion-microbial fuel cell and dark fermentation-microbial fuel cell-anaerobic digestion. This invention achieves deep purification of wastewater and synergistic recovery of multiple forms of energy, including hydrogen, methane, and electricity.

The utility model relates to the technical field of environmental protection and new energy, and particularly discloses a microalgae-mediated power generation energy storage and sewage purification coupling device which comprises a microalgae sewage treatment mechanism and a microalgae biological fuel cell coupling mechanism assembled on one side of the microalgae sewage treatment mechanism, the microalgae sewage treatment mechanism comprises a supporting frame and a supporting seat, an S-shaped glass tube is fixedly mounted on the inner wall of the supporting frame, reflecting covers corresponding to the S-shaped glass tube are fixedly mounted at the front end and the rear end of the supporting frame, and a reactor is fixedly mounted at the top of the supporting seat; pollutants in sewage can be absorbed in the snakelike glass pipeline through microalgae to purify the sewage, meanwhile, the treated microalgae biomass is conveyed into the microalgae biofuel cell coupling mechanism, chemical energy is converted into electric energy, power can be generated in the sewage treatment process, and the sewage treatment efficiency is improved. Economical and efficient sewage purification and energy production are effectively realized.

The present application is directed to the problem of small specific surface area, low active site density and limited active material loading of the electrode surface of the conventional glassy carbon electrode, and provides a three-dimensional flexible carbon-based material and a preparation method thereof, comprising: weighing SEBS and adding it into a toluene solution to stir into a uniform solution; taking carbon nanotubes, graphene powder, graphite powder, sodium bicarbonate and white sugar and stirring uniformly; taking the toluene solution of SEBS, adding it into the mixed powder, adding toluene solution, stirring until mixed uniformly to obtain carbon slurry; taking the carbon slurry, transferring it into a corresponding mold for shaping, transferring the shaped slurry into anhydrous ethanol for soaking to solidify the carbon slurry; after the solidified carbon slurry material is dried, it is immersed into a hydrochloric acid solution to obtain a three-dimensional carbon-based material with a porous structure. The present application synthesizes a three-dimensional, porous, flexible and conductive carbon-based material, which is applied to a biological sensing electrode or a biological fuel cell to effectively increase the specific surface area and active material attachment sites of the electrode.

This invention discloses an anti-clogging biofiltration device coupled with a microbial fuel cell, applied in the field of biofiltration technology. It includes: a biofilter consisting of a porous media coarse filter layer, a cathode region, and an anode region arranged sequentially from top to bottom; a Helmholtz coil array deployed around the biofilter; and an external circuit that, together with the anode and cathode regions, constitutes the microbial fuel cell. The microbial fuel cell provides self-sufficient power to the cathode region, anode region, and Helmholtz coil array for anti-clogging biofiltration. This invention effectively solves the problems of accumulated clogging in EPS (expanded power filters) and the inability to clean the bottom filter media, and realizes self-generated electricity for the microbial fuel cell.

The invention discloses a preparation method of an AB-N-P-x microbial fuel cell (MFCs) air cathode catalyst, relates to a preparation and modification method of a microbial fuel cell cathode catalyst, and solves the problem of low electricity generation performance of an existing air cathode. The method comprises the following steps: pretreating straws by using melamine, KOH and KHCO3, then calcining in a programmable tubular furnace at 900 DEG C for 2 hours to obtain a black product, and pickling, washing and drying the black product in 1M hydrochloric acid. And putting NaH2PO4 into the upstream of a programmable tubular furnace, putting the dried black product into the downstream of the programmable tubular furnace, and calcining at 350 DEG C for 2 hours to complete the preparation of the AB-N-P-x microbial fuel cell cathode catalyst. According to the modified cathode catalyst obtained by the invention, through the synergistic effect of heteroatoms P and N, the performance of active sites is enhanced, and the electrode power generation efficiency is improved, so that the performance of the microbial fuel cell is improved.

The invention discloses a Klebsiella strain with electroactivity and application of the Klebsiella strain in degradation of plastics. The Klebsiella strain is Klebsiella sp. X11, and the preservation number of the Klebsiella strain is CGMCC (China General Microbiological Culture Collection Center) 1.62470. The degradation strain X11 is obtained through separation and screening, belongs to gram-negative bacteria, and can realize efficient degradation of the polyvinyl chloride film, so that the polyvinyl chloride film reaches a relatively high weight loss ratio. Meanwhile, it is found that the strain X11 has electrochemical activity, can degrade polyvinyl chloride (PVC) and generate electricity by means of a microbial fuel cell, and has wide application prospects in the fields of plastic pollution bioremediation, plastic solid waste resourceful treatment and utilization and the like.

The present application relates to the field of environmental management technology, and discloses a kind of emergent aquatic plant-sediment microbial fuel cell synchronous remediation water body method, comprising the following steps: S1, constructs emergent aquatic plant-SMFC coupling system, emergent aquatic plant-SMFC coupling system includes emergent aquatic plant and SMFC, SMFC includes anode electrode, modified cathode electrode and external resistance;Emergent aquatic plant is planted around anode electrode, so that anode electrode is contacted with bottom mud;S2, preparation modified cathode electrode, and the catalytic activity of cathode electrode is enhanced by electrochemical oxidation modification;S3, domestication electric active microorganism, emergent aquatic plant-SMFC coupling system is placed in room temperature domestication, and the electricity generation capacity of anode electrode is improved by introducing bottom mud rich in organic matter or exogenous inoculation microorganism;S4, start and run system, and the concentration change of chlorophyll a, ammonia nitrogen, total nitrogen and total phosphorus in water body is monitored in real time.The present application provides a kind of green, economic and efficient algal bloom water remediation technology, and is suitable for the ecological management of algal bloom water.

The application discloses a modified anode for a marine sediment microbial fuel cell and a preparation method of the modified anode and the marine sediment microbial fuel cell, and the preparation method comprises the following steps: S1, obtaining a primary anode; S2, nitrogen is introduced into a first PBS buffer solution to perform nitrogen exposure treatment, and dopamine hydrochloride is added to obtain a first electrolyte; S3, the primary anode is immersed into the first electrolyte, and electro-deposition is performed on the primary anode by a first cyclic voltammetry scanning method to obtain a PDA modified anode; S4, Fe3O4 powder is added into a second PBS buffer solution to obtain a second electrolyte; and S5, the PDA modified anode is immersed into the second electrolyte, and electro-deposition is performed on the PDA modified anode by a second cyclic voltammetry scanning method to obtain a PDA / Fe3O4 modified anode. The PDA / Fe3O4 composite is used to modify the anode, the electrochemical performance of the anode is improved, and a proper amount of amino acid is added into the sediment, so that the organic matter conversion and electron transmission efficiency of the microbial fuel cell are improved, and the electricity generation performance of the microbial fuel cell is improved.

The utility model discloses a sulfur autotrophic denitrification filter material reinforced constructed wetland microbial fuel cell sewage treatment system which comprises a container main body, the container main body sequentially comprises a gravel water distribution layer, a granular activated carbon anode layer, a sulfur autotrophic denitrification filter material layer, a middle gravel layer, a granular activated carbon cathode layer and a wetland plant layer from bottom to top, anodes are embedded in the granular activated carbon anode layer, cathodes are embedded in the granular activated carbon cathode layer, and the wetland plant layer is arranged in the middle gravel layer. A lead penetrates through the granular activated carbon anode layer and the granular activated carbon cathode layer to connect the anode with the cathode, a water inlet is formed in the gravel water distribution layer, and a water outlet is formed in the wetland plant layer. According to the utility model, the constructed wetland microbial fuel cell and the sulfur autotrophic denitrification technology are combined, so that the dual effects of pollutant removal and electricity generation are realized, a new idea is provided for the combination of the constructed wetland microbial fuel cell and the sulfur autotrophic denitrification technology, and meanwhile, a new direction is provided for the removal of river sewage.

A biofuel cell generates electricity by an oxidation-reduction reaction catalyzed by an enzyme, wherein the enzyme is immobilized on at least one of an anode and a cathode, the anode comprises a conductive material (1) and an electrode binder (1), the cathode comprises a conductive material (2) and an electrode binder (2), at least one of the electrode binder (1) and the electrode binder (2) comprises a polymer (A), the polymer (A) comprises a first structural unit derived from a nonionic ethylenically unsaturated monomer (a1), a second structural unit derived from an anionic ethylenically unsaturated monomer (a2), and a third structural unit derived from a crosslinking agent (a3), and the crosslinking agent (a3) has two or more ethylenically unsaturated bonds in one molecule.