54 results about "Biofuel Cells" patented technology

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.

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 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.

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 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.

The invention provides a complex microbial inoculant and application thereof in degradation of starch and biofuel cells, and belongs to the cross technical field of environmental biotechnology and bioelectrochemistry. According to the invention, a complex microbial inoculant composed of three microorganisms is constructed through a synthetic biological strategy; the complex microbial inoculant comprises genetically engineered Escherichia coli capable of rapidly converting starch into monosaccharide easy to use, shewanella for bearing upstream metabolites and geobacter for generating electricity, wherein the genetically engineered Escherichia coli is used for rapidly converting starch into monosaccharide easy to use; according to the invention, through precise function division of three strains, a complex degradation and power generation process is decomposed into a plurality of sub-steps catalyzed by special strains, so that an efficient'metabolic assembly line 'is formed, the inhibition of intermediate products is reduced, and the overall energy conversion efficiency is improved; the complex microbial inoculant can be used for degrading starch and preparing microbial fuel cells, realizes wastewater purification and recovery of bioelectric energy at the same time, and has remarkable environmental and economic benefits.

The invention discloses a PTFE anion exchange membrane-based biological fuel cell, which comprises an anode chamber, a cathode chamber, an anion exchange membrane and an external circuit system, the anion exchange membrane is a PTFE membrane grafted with quaternary ammonium groups and is arranged between the anode chamber and the cathode chamber, the anode chamber is internally provided with an anode, an anolyte and anaerobic sludge, the anode is attached with anaerobic electrogenesis microorganisms, and the cathode chamber is provided with an anode and an anode liquid. The anaerobic electrogenesis microorganisms decompose organic matters in the anode chamber and generate H < + >, CO2 and electrons; a cathode, a salt buffer solution and O2 are arranged in the cathode chamber, the cathode is conductively connected with the anode through an external circuit system, and OH <-> in the cathode chamber is transferred into the anode chamber through the anion exchange membrane. The biological fuel cell provided by the invention adopts the PTFE membrane grafted with quaternary ammonium groups as the anion exchange membrane, so that OH <-> in the cathode chamber is transferred into the anode chamber through the anion exchange membrane to maintain pH balance of the anode chamber, reduce ion deposition on the surface of the cathode and reduce charge transfer resistance, thereby obtaining higher power density and coulombic efficiency.

The invention discloses a system for repairing underground water by utilizing a microalgae microbial fuel cell, the system comprises an anode module, a cathode module and a pumping module, the anode module comprises an anode reactor, a first electrode and a velvet net, the cathode module comprises a cathode reactor and a second electrode, and the pumping module is connected with the first electrode and the second electrode. The pumping module comprises a first peristaltic pump, a second peristaltic pump and a third peristaltic pump, a first electrode is arranged in the anode reactor, the surface of the first electrode is wrapped with a velvet net, a second electrode is arranged in the cathode reactor, and the first electrode and the second electrode are connected through a metal wire. According to the invention, the microalgae microbial fuel cell is directly placed in the to-be-repaired underground water in situ, so that the remediation efficiency of the underground water is improved by utilizing microalgae microorganisms, and meanwhile, the traditional aeration oxygen supply is replaced by microalgae photosynthesis, so that the power generation performance of the microbial fuel cell is improved, and the energy consumption is reduced; and the process cost of the microbial fuel cell is reduced based on the biochemical characteristics of the microalgae.

The invention provides a synthetic microbial community and application thereof in degradation of trehalose and biofuel cells, and belongs to the technical field of synthetic microbiology and biological energy. A synthetic microbial community is constructed by means of synthetic biology, the synthetic microbial community comprises genetic engineering escherichia coli and shewanella, and the synthetic microbial community can realize a complete metabolic pathway from trehalose to acetic acid and an efficient electron transport chain; the method can be used for treating trehalose-rich wastewater or wastes and the like; the synthetic microbial community can be used for a microbial fuel cell, can stably generate current density and power density which are higher than those of a single strain or a natural mixed flora in the microbial fuel cell, and has good practicability.

The invention provides an electrode assembly for a submarine microbial fuel cell, a preparation method and a device, belongs to the technical field of fuel cells, and solves the technical problem of low synergistic energy supply efficiency of a cathode and an anode of a fuel cell. The co-treatment anode is treated by urea and sodium persulfate; the ternary composite cathode is electrically connected with the co-processing anode through a wire; the co-processing anode releases electrons in seabed sludge through an oxidation reaction of microorganisms on organic matters, and the electrons are transmitted to the ternary composite cathode through a wire; a seabed sludge and seawater interface is used as a natural proton exchange membrane to realize a proton and electron transfer path between the anode and the cathode; the electrode assembly generates a potential difference through electron transfer and redox reaction and outputs energy. The method is suitable for preparing the electrode of the submarine microbial fuel cell.

A biological substance cumulative amount measurement device 1 for measuring a cumulative amount of a biological substance generated in a living body, said device including: a biofuel cell 20 for generating power using a specific biological substance 13 as a substrate; a power storage unit 40 for storing electric energy generated through power generation by the biofuel cell 20; and a communication unit 50 for outputting information on the electric energy stored in the power storage unit 40 in response to a trigger from the outside.

The application discloses a microbial fuel cell system, a control method and a method for co-production of sodium acetate. The system comprises an anode chamber and a cathode chamber, and the anode chamber and the cathode chamber are separated by a proton exchange membrane. An anode component and a cathode component are arranged in the anode chamber and the cathode chamber respectively, and the anode component and the cathode component are used for supplying power to an external circuit. The anode chamber is filled with an anode medium, and a lower part of the anode component is immersed in the anode medium to form an immersion section of the anode component. The liquid level of the anode medium can be adjusted, and the immersion section of the anode component immersed in the anode medium can also be synchronously adjusted with the liquid level of the anode medium. The application can convert biomass energy into electric energy output, and can obtain sodium acetate through neutralization adjustment and purification by taking an intermediate product in a reaction process as a raw material, so that clean energy and by-product sodium acetate are co-produced.

A medical device includes a holder that may be applied to the skin of a patient, a biofuel cell, a pump configured for supplying blood to the biofuel cell, a sensor configured to emit a signal representative of a blood parameter, a control unit connected to the pump and the sensor, and a rechargeable battery electrically connected to the biofuel cell. The control unit is configured to perform a recharging procedure including the following steps: processing the signal emitted by the sensor, estimating a value of the blood parameter of the patient, comparing said estimated value with a threshold value, and, based on the comparison, commanding the activation of the pump for delivering a predetermined amount of blood to the biofuel cell for generation electricity and recharging the battery.

This utility model relates to the field of microbial fuel cell technology, specifically a microbial fuel cell device, including a shell. A cover plate is fixedly connected to the top of the shell, and a partition mechanism is rotatably connected to the bottom of the cover plate. This utility model divides the inner cavity of the shell into two flow channels through the partition plate of the partition mechanism. Each flow channel is equipped with a proton exchange membrane. When the microbial fuel cell is working normally, the two flow channels are connected simultaneously, thereby increasing the working area of ​​the proton exchange membrane and thus increasing the working efficiency. When the proton exchange membrane needs to be replaced, a switching plate is used to close one flow channel, and the proton exchange membrane in that flow channel can be removed from the slot for replacement. At the same time, the probability of cross-contamination between the two ends of the flow channel is reduced. The cutting plate is rotated again to close the other flow channel and replace the other proton exchange membrane. This solves the problem that the bolt-fastened installation method of the proton exchange membrane is not convenient for replacement.

Provided is an electrode binder for a biofuel cell, which can produce a biofuel cell exhibiting excellent output characteristics, and which provides an electrode paste that is low in environmental load and has good dispersibility of an electrically conductive material and is suitable for screen printing. The electrode binder for a biofuel cell of the present invention comprises a polymer (A) having 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) having two or more ethylenically unsaturated bonds in one molecule.

The objective is to provide a microbial fuel cell that can efficiently extract electrical energy from organic fertilizers given to plants, thereby improving power production capacity. [Solution] A microbial fuel cell characterized by comprising an anode electrode which is a metal with a negative standard electrode potential, a cathode electrode which is a carbon material or a metal with a higher standard electrode potential than the anode electrode, and an electrolyte which is an organic fertilizer containing a microorganism that promotes the growth of current-generating bacteria that generate electrons in an anaerobic environment when a voltage is applied.

The present invention is an underwater power generation system engineered for operation in a low-flow environment on a seafloor or riverbed. Features of the system include a hybrid Savonius C foil and Darrieus helical foil hydro-kinetic (HK) turbine for primary power generation and a microbial fuel cell (MFC) for secondary power generation. Both power generation sources are secured to a base frame and may be used to charge a rechargeable battery. Anodes from the MFC preferably rest in anoxic sediment on the seafloor or riverbed. The rechargeable battery may be used to power target electrical equipment that may include sensors, data-logging, communications and other electronic functionality operating underwater.

Disclosed is a test strip for electrochemically detecting a target, preferably in the form of a biofuel cell, the test strip comprising a first substrate laminated to a lid; the first substrate comprising: a sample chamber; an anode and a cathode, the sample chamber configured to allow for fluid communication with one of the anode and the cathode; and a separation chamber configured to separate the anode and cathode and to receive a fluid or gel; and wherein the first substrate is laminated to a lid and the test strip further comprises an inlet configured to deliver the fluid or gel to the separation chamber after the lamination. Also disclosed are the use of the test strip to detect the presence or absence of a target in a sample; and a method for manufacturing the test strip.

The invention discloses a biochar-polyurethane carbon anode material, a preparation method thereof, a microbial fuel cell and application, biochar, polyol, triethanolamine, water and isocyanate are added into a mold to be mixed to obtain a mixture, the mixture reacts under stirring until white floating foam appears, then standing foaming is performed, carbonization is performed after the material is cured, and the biochar-polyurethane carbon anode material is obtained. The internal resistance of a double-chamber microbial fuel cell constructed by taking the carbonized biochar-polyurethane material as an anode of MFCs is not greater than 3.00 omega, the highest voltage stably exceeds 620 mV, the maximum area power density exceeds 800 mW m <-2 >, and the COD removal rate of the biochar-polyurethane carbon anode material disclosed by the invention reaches 97.24%.

[Problem] To provide an electrode suitable for a biofuel cell, capable of compensating defects of a conventional electrode, having sufficient conductivity, and further improving oxidation-reduction action as an electrode catalyst. [Solution] This electrode comprises a base material, which is a porous metal body, and a conductive carbon film. The porous metal body is composed of pores and a skeleton having a three-dimensional network structure. The conductive carbon film is formed on the surface of the skeleton of the porous metal body.

Provided is a high-performance cathode for a biofuel cell. This cathode for a biofuel cell comprises: a carbon-based conductive base material; and a hydrated coating layer that coats the surface of the carbon-based conductive base material and that is an amphiphilic polymer having a hydrophilic group and a hydrophobic group.

This invention relates to the field of ship wastewater treatment technology, specifically to a ship wastewater treatment system and method. The system includes an intelligent sensing module composed of a quantum tunneling sensor array and a live microbial sensor for real-time detection of heavy metals, pathogens, and chemical oxygen demand (COD) in wastewater; a plasma-sonic-chemical synergistic reactor configured to remove suspended solids and organic pollutants through the synergistic effect of magnetic nanoparticle adsorption and sonochemical oxidation; a synthetic microbial biomimetic reactor with built-in gene-edited bacterial communities and 3D-printed porous carriers for degrading organic matter and removing nitrogen and phosphorus; a membrane separation and resource recovery module comprising a biomimetic cell membrane intelligent filtration system and an electrochemical concentration unit for freshwater resource recovery and phosphate and lithium-ion recovery; an energy recovery module consisting of a photocatalytic-microbial fuel cell to achieve simultaneous end-of-pipe treatment of pollutants and power generation; and an intelligent control module.

The invention discloses a composite modified anti-pollution proton exchange membrane and a preparation method thereof, belongs to the technical field of proton exchange membranes, and is suitable for hydrogen fuel cells, microbial fuel cells and water electrolysis hydrogen production equipment. In order to solve the problems that an existing proton exchange membrane is single in anti-pollution dimension, high in cost depending on precious metal and insufficient in acid resistance and mechanical performance, a three-layer functional structure is adopted and comprises a free radical pollution resisting outer layer, a composite pollution resisting middle layer and a water retention enhancing inner layer, a precious metal-free composite modifier is matched, and key process parameters such as pretreatment and functional liquid preparation are defined. The membrane realizes cooperation of pollution resistance, high conductivity, acid resistance and mechanical properties, and is suitable for multi-scene application.

The utility model belongs to sewage treatment device, especially point to a kind of sulphur autotrophy artificial wetland-microbial fuel cell coupling system. Wherein water inlet tank is connected with sewage collection end, artificial wetland includes the support layer, mixed filler layer, middle layer, anode layer, isolation layer, cathode layer and plant layer distributed from bottom to top;Support layer as the material input end of artificial wetland and the pumping output end of water inlet tank are communicated, the material output end of artificial wetland is discharged through the water outlet of its side part, and anode layer and cathode layer respectively correspond to accommodate the anode and cathode of microbial fuel cell;The material output end of artificial wetland is located in the lower part of isolation layer and is communicated with outside through siphon pipe;The filler in mixed filler layer adopts uniform mixed sulphur granule and siderite.The utility model effectively solves the treatment problem of low C / N ratio wastewater in prior art, has the advantages such as good denitrification and phosphorus removal effect, no secondary pollution, optimal dissolved oxygen distribution, promote the deep removal of pollutants and the like.

The application discloses a preparation method and application of an activated carbon filled modified cathode of carbon nitride doped phthalocyanine iron. The modified cathode is loaded with a binary composite catalyst through immersion and integral calcination, and has the characteristics of simplicity, stability and high efficiency. The modified cathode can be applied to an electrocatalytic microbial fuel cell system to treat coking wastewater, and has the potential of producing H2O2 through electrocatalytic ORR. Experimental verification shows that the modified cathode can effectively degrade TOC, TN and COD in coking wastewater in a coupling system, and the direct effluent can reach the national first direct discharge standard, so that the modified cathode has the potential of industrial application.

The application belongs to the technical field of microbial fuel cells, and particularly relates to an anode for a microbial fuel cell, a microbial fuel cell and application. The anode for the microbial fuel cell comprises an electrode base and a modified material coated on the surface of the electrode base, and the modified material comprises nano-hydroxyapatite (nHA) and carbon nanotubes (CNTs). The nHA modification enables the electrode base to have better biocompatibility and surface area, is conducive to the formation of a dense biological membrane on the surface of the anode, and increases the electrocatalytic activity of the microbial fuel cell. The excellent conductivity of the CNTs can promote electron transfer and shorten the start-up time of the microbial fuel cell. The anode, a cathode and a proton exchange membrane can be assembled into a microbial fuel cell, and the microbial fuel cell can be used for degrading diclofenac and has a high degradation efficiency.