186 results about "Microbial fuel cell" patented technology

The invention discloses a microbial fuel cell coupling system for industrial wastewater treatment and energy regeneration, and the system comprises a wastewater treatment and energy conversion module which is used for introducing industrial wastewater into a microbial fuel cell, realizing efficient decomposition of organic matters under the metabolism effect of microbiota in an anode chamber, generating purified water reaching the standard, and recovering clean energy; the intelligent parameter control module is used for dynamically adjusting operation parameters of each unit through an MLP model; and the dynamic monitoring feedback module carries a high-precision sensor array and an internet-of-things transmission device, acquires parameters in the fuel cell in real time, provides a predictive regulation and control strategy for the system by applying an MLP model, and forms closed-loop optimization through an energy-material-information three-flow coupling mechanism. Through cooperative work of all the modules, efficient and stable operation of the system is achieved, the prospect in the field of industrial wastewater treatment is wide, the resource utilization efficiency can be remarkably improved, and the cost is reduced.

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.

The invention belongs to the technical field of new energy materials and bioelectrochemistry, and particularly relates to an iron-based multi-metal sulfide composite carbon anode material and a preparation method of the iron-based multi-metal sulfide composite carbon anode material. The preparation method is simple in process flow, convenient to operate, easy for large-scale production, wide in raw material source, low in cost and environment-friendly, and can be used for preparing the three-dimensional porous carbon matrix which is formed by foaming and carbonizing polyvinylpyrrolidone and is provided with interconnected carbon nanosheets. Through reasonable composition design and structural regulation, and optimization of metal ratio and vulcanization conditions, accurate regulation of material performance can be realized, electrochemical performance and biocompatibility are significantly improved, electricity generation performance and operation stability of a microbial fuel cell are improved, and good industrial application prospects are achieved.

The invention discloses a nitrogen / boron-doped non-noble metal-based material, a synthesis method thereof and application of the nitrogen / boron-doped non-noble metal-based material in a microbial fuel cell. According to the method, a carbon fiber brush is used as a substrate, urea and sodium borohydride are used as a nitrogen source and a carbon source respectively, and the nitrogen / boron doped non-noble metal-based material is synthesized through a hydrothermal method. The electrostatic interaction between graphene oxide and FeCoNi-LDH is utilized to realize tight combination, so that FeCoNi-LDH nanosheets are uniformly dispersed on the surface of the carbon fiber brush, and the problems that LDHs are easy to agglomerate and poor in conductivity are solved; in the boron / nitrogen co-doping process, an efficient electron transmission channel is constructed by adjusting the electronic structure of the composite material, and the material is endowed with excellent electron transmission capability and oxygen reduction performance. In an MFC (Microbial Fuel Cell) test constructed by taking a nitrogen / boron-doped non-noble metal-based material as a cathode, the output voltage and the maximum power density are several times of those of commercial Pt / C and a blank carbon fiber brush, and the carbon fiber brush has a wide application prospect in the field of microbial fuel cells.

The utility model discloses a garbage biogas gasification treatment device capable of generating electricity, which relates to the technical field of garbage treatment equipment and comprises a reaction chamber, two conductive parts and a resistor or an energy storage element, a low-oxygen or oxygen-free environment can be kept in the reaction chamber, and a liquid inlet, a liquid outlet, a gas outlet and two fixing ports are arranged on the reaction chamber; the two conductive parts respectively extend into the reaction chamber through the two fixing ports to form two electrodes; the resistor or the energy storage element is arranged outside the reaction chamber; the resistor or the energy storage element is electrically connected with the two conductive pieces and enables the two electrodes to respectively form an anode and a cathode. According to the device, a microbial fuel cell and an anaerobic fermentation process are integrated in one set of device, so that the microbial fuel cell and the anaerobic fermentation process are highly and effectively integrated, the removal rate of organic matters in garbage is high, the occupied space is small, the proportion of CH4 in biogas is high, and electric energy is generated.

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 relates to the technical field of sewage treatment, and discloses a sewage biotoxicity detection system. The system comprises a reaction module, a detection module and a data processing module, the reaction module, the detection module and the data processing module are connected in sequence; the reaction module is used for providing a metabolic environment for the sewage to be detected and nitrifying bacteria; the detection module is used for detecting activity data in a metabolic environment; the activity data comprises at least one of ammonia nitrogen concentration, microbial fuel cell current and active oxygen fluorescence signal intensity; and the data processing module is used for determining the toxicity of the sewage to be detected based on the activity data. According to the present invention, with the nitrifying bacteria as the indicator organism of the sewage toxicity, the accurate evaluation of the sewage biological toxicity is achieved based on the detected multi-dimensional activity data such as the ammonia nitrogen concentration, the microbial fuel cell current, the active oxygen fluorescence signal intensity and the like.

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.

The invention provides a system driven by a microbial fuel cell and used for synergistically degrading antibiotics through photoelectrocatalysis. The system comprises a photoelectrocatalysis device and a microbial fuel cell system. According to the invention, a confinement packaging photo-anode + MFC self-driving + in-situ H2O2 production synergistic system is adopted, a green self-driving energy system is constructed, a double-chamber MFC is adopted to replace an external bias voltage, electricity is generated by using a microbial degradation photoelectrocatalysis intermediate product, a stable voltage (0.6-0.8 V) is output, the photoelectrocatalysis requirement is met, and no fossil energy is input in the whole process.

The present application belongs to the technical field of water pollution treatment, and particularly relates to a kind of constructed wetland coupled microbial fuel cell and a kind of water pollution treatment method.The modified iron-carbon material in the present application can reduce the inhibitory effect of antibiotics on device electricity generation, well maintain the activity of electricity-generating bacteria, and maintain stable electricity generation of the system;The modified iron-carbon material in the present application not only has efficient electron transport capacity, strengthens electron transfer, but also has a large number of active adsorption sites, can effectively remove ofloxacin, and is helpful for denitrification;At the same time, the surface area of the modified iron-carbon material is huge, and the surface is loaded with Fe, which can improve the removal capacity of phosphorus.The present application realizes efficient degradation of ofloxacin and conventional pollutants by reasonably constructing a constructed wetland coupled microbial fuel cell, and has higher electricity generation performance.

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.

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.

This invention provides a photovoltaic-powered microbial fuel cell constructed wetland system, relating to the field of water pollution control. The system consists of a photovoltaic power supply module, a pulse modulation unit, a mode switching unit, a microbial fuel cell constructed wetland body, an auxiliary anode module, and an electrically isolated stimulation electrode pair. Through photovoltaic power supply and low duty cycle intermittent constant current pulse modulation, it can maintain stable operation for more than 72 hours under no-light conditions. Relying on the time-sharing pulse output of the mode switching unit, electrochemical oxidation of recalcitrant organic matter is achieved through the auxiliary anode. The electroisolated electrode pair stimulates the metabolism of electrogenic bacteria with a non-contact alternating electric field, solving the problems of unstable power supply and difficulty in balancing oxidation efficiency and bacterial activity in off-grid scenarios, thus improving wastewater treatment efficiency and long-term operational stability of the system.

The present invention relates to the field of carbon aerogel technology, specifically disclosing a method for preparing a magnetic cellulose-carbon aerogel composite electrode material and its application. Using natural pulp as a precursor, the cellulose hydrogel is prepared via a sol-gel process. This hydrogel is then impregnated with ferric chloride, freeze-dried, and finally pyrolyzed in a tubular furnace to produce a magnetic cellulose-carbon aerogel (CA@Fe3O4) composite material. The magnetic cellulose-carbon aerogel prepared in this invention exhibits high specific surface area, good electrical conductivity, and excellent biocompatibility. Used in microbial fuel cell anodes, it can degrade dimethyl sulfide while converting chemical energy into electrical energy, enabling the renewable utilization of organic matter.

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 aims to overcome the defects of a traditional microbial fuel cell (MFC), and provides a built-in biological carrier cage tube type microbial fuel cell device, namely a novel microbial fuel cell device in which a tubular reactor is coupled with the MFC. The built-in mesh cage type device is filled with macroporous adsorption resin serving as a biological carrier, when wastewater passes through, a biological membrane is formed on the surface of the built-in mesh cage type device so as to degrade organic pollutants and generate electrons and protons, the electrons are collected by a current collector and then flow to a cathode to form current, and the protons are transmitted to the cathode to be subjected to reduction reaction. The device structure main body can be formed by connecting a plurality of single-tube type MFC reactor units in series or in parallel, the device structure main body can be flexibly adjusted according to the actual application scale, and the parallel combination adopts U-shaped joints for connection. A single MFC unit has a specific structure and has a unique design of separation of an anode, a cathode and a carrier cage, and a biological carrier, namely macroporous adsorption resin, is stored in the carrier cage. Flanges are mounted at the head and tail of the MFC, so that maintenance operation is facilitated. According to the design, a plug flow reactor model is adopted, high efficiency and accuracy are ensured, accurate control and optimization of the reaction process are realized, the sewage treatment efficiency and effect are improved, and more thorough purification treatment and energy recovery are realized.

The present invention belongs to the field of microbial energy technology, and specifically relates to a method for producing hydrogen and electricity using biomass. The present invention selects Anaerobic Bacillus saccharolyticus, which is easy to culture. It can not only use a variety of sugars as raw materials, but also convert a large amount of biomass into hydrogen energy and electrical energy, thereby realizing efficient resource utilization of lignocellulose. At the same time, the non-detoxified hydrolyzate is directly used as an electron donor, and after a simple dilute acid treatment, it can be used in microbial fuel cells, avoiding the pollution caused by the detoxification process to the environment. The process steps are simple and easy to operate. Only a single strain needs to be added, and it has good application prospects. The synchronous hydrogen and electricity production process adopted by the present invention can significantly improve the utilization efficiency of the hydrolyzate and further increase the hydrogen production and electricity production.

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 utility model belongs to the technical field of new energy and green low carbon, and particularly relates to a microbial fuel cell for generating electric energy by utilizing soil, which comprises an anode electrode, a cathode electrode, a gas exchange membrane, a circular folding cover, a square folding cover, a gas chamber and a protective cover, the gas chamber is fixedly mounted on the top surface of the circular folding cover, the gas exchange membrane and the cathode electrode are respectively and sequentially arranged in the gas chamber, the square folding cover is arranged in the gas chamber, and the protective cover is buckled at the top end of the gas chamber. The utility model has the advantage that the microbial fuel cell provides power for the underground sensor used in precision agriculture and green infrastructure so as to prevent environmental threat caused by the use of the traditional cell.

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 invention discloses a Fe-N-C-at-MXene composite material, a synthesis method thereof and an application of the Fe-N-C-at-MXene composite material in a microbial fuel cell. According to the method, an in-situ growth strategy is adopted, MIL-101 (Fe) is constructed on the surface of single-layer Ti < 3 > C < 2 > T < x > MXene, an MIL-101 (Fe)-MXene composite material with good interface bonding is formed, melamine is introduced as a nitrogen source, synergistic nitrogen doping and carbonization are achieved through high-temperature pyrolysis, and the Fe-N-C-MXene composite material with the high specific surface area and rich active sites is constructed. The Fe-N-C-at-MXene composite material disclosed by the invention not only has excellent conductivity and structural stability, but also has a hierarchical pore channel and a high-density electrocatalytic active center, so that oxygen diffusion and interface reaction kinetics are effectively promoted. In an MFC performance test, as a cathode catalyst, the cathode catalyst remarkably improves the output voltage and the maximum power density of the battery, exceeds a commercial Pt / C catalyst, and shows a wide application prospect.

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.

This invention discloses a method for preparing an oxygen reduction catalyst composed of a nickel-cobalt-aluminum layered double hydroxide and a two-dimensional transition metal carbide, comprising the following steps: preparing a nickel-cobalt-aluminum layered double hydroxide and a two-dimensional transition metal carbide; attaching the nickel-cobalt-aluminum layered double hydroxide to the two-dimensional transition metal carbide, thereby successfully preparing the nickel-cobalt-aluminum layered double hydroxide combined with the two-dimensional transition metal carbide, and disclosing its application as a cathode catalyst for microbial fuel cells. The material prepared by this invention has high porosity, numerous reaction sites, good electrochemical stability, and high conductivity. Therefore, as a cathode catalyst for microbial fuel cells, it improves the efficiency of ion flow, ensures the stability of electrode cycling and power generation efficiency, thereby improving the performance of microbial fuel cells.

According to the present disclosure, provided is an electrode for a microbial fuel cell, the electrode comprising a tube-shaped container. The tip end of the container is sealed by a semipermeable membrane. At least a portion of the interior of the container is filled with an aqueous solvent. A cathode is inserted into the distal end of the container. The cathode is at least partially immersed in the aqueous solvent inside the container.

The invention discloses a microbial fuel cell based on bacillus pasteurii as well as a construction method and application thereof, and relates to the technical field of biological fuel cells. The microbial fuel cell comprises a single-chamber reactor, an anode, a cathode and a wire, the cathode is positioned on the upper layer of the single chamber of the single-chamber reactor and is in contact with air; the anode is positioned at the single-chamber bottom layer of the single-chamber reactor; the lead is connected with the anode and the cathode; a cavity of the single-chamber reactor is filled with soil or an electrolyte solution; the surface of the anode is loaded with a bacillus pasteurii biological membrane; the bottom layer of a single chamber of the single-chamber reactor is loaded with a urea-containing culture medium. The microbial fuel cell provided by the invention can realize collaborative implementation of soil heavy metal remediation and electric energy recovery, and has the advantages of simple preparation process, stable electricity generation performance, high heavy metal removal efficiency, wide application range and the like.

The invention provides a C3N5 modified composite catalytic electrode, a coupled microbial fuel cell system constructed by the C3N5 modified composite catalytic electrode and a wastewater treatment method. Inlet water of the system is high-concentration new energy wastewater with COD (Chemical Oxygen Demand) of about 20000 mg / L, and the wastewater flows into the reactor from a water inlet at the bottom of the reactor through a peristaltic pump, passes through a microbial anode chamber, a gravel filling layer and an upper cathode chamber and then flows out. A carbon rod is used as a conducting medium of an anode, and wastewater overflows out of a cathode area for effluent collection. The highest COD removal rate reaches 83%, the highest treatment capacity reaches 6kg COD / (m < 3 >. D), and available electric energy is synchronously generated. According to the method, the capacity of converting wastewater pollutants and generating electricity of microorganisms is utilized, the photoelectric response and catalytic capacity of the nano-catalyst are combined, energy-saving and efficient treatment of the pollutants in the industrial wastewater is achieved, meanwhile, secondary pollution is avoided, and the method is a low-carbon and environment-friendly refractory wastewater treatment method with large technical and economic advantages.

The application discloses a photocatalytic microbial fuel cell sensor, which comprises an anode chamber provided with a microbial anode and a cathode chamber provided with a cathode, the cathode comprises a cathode carrier material and a semiconductor material loaded on the cathode carrier material, and the semiconductor material is a narrow-band-gap semiconductor material; the narrow-band-gap semiconductor material can make the cathode generate a stable current under light conditions, and the generated stable current is the same as or close to the current generated by the microbial anode. The photocatalytic microbial fuel cell sensor has the advantages of wide detection range, high detection sensitivity, wide application range, high stability, good repeatability and the like, can be widely applied to monitoring and early warning of water quality, has high use value and good application prospect.

The application discloses a novel bio-photoelectric coupling device, which comprises a shell, a water inlet formed in the bottom of the shell, and a water outlet formed in the top of the shell; an artificial wetland unit, which comprises a shunt layer and an intermediate substrate layer sequentially laid in the shell from bottom to top, and plants planted in the intermediate substrate layer; the water inlet is located at the bottom of one side of the shunt layer; a microbial fuel cell unit, which comprises an anode layer and a cathode layer, and the anode layer and the cathode layer are electrically connected through an external circuit, the anode layer is located between the shunt layer and the intermediate substrate layer, the cathode layer is located above the intermediate substrate layer, the top of the plants penetrates through the cathode layer and extends out of the shell, and the water outlet is located above the cathode layer. The coupling of the microbial fuel cell unit and the artificial wetland unit can not only remove common pollutants, but also remove composite pollutants such as antibiotics and heavy metal substances, improve the pollutant removal capacity, and realize more economical input and output.