13 results about "Biogenic gas" patented technology

A biogas slurry filtering system comprising a first tank configured to receive the biogas slurry to be filtered and a mixing device located in the first tank and configured to aerate the biogas slurry. The filtering system also comprising a filter configured to filter the biogas slurry into digestate and filtrate and a controller that controls operation of the filtering system. The filter comprising a filter head located in the first tank at a height-adjustable position. <Figure 1>

This invention provides a method for optimizing the uniform gas distribution of an airflow distributor in a biogas-liquid reactor, belonging to the technical field of biogas-liquid reactors. It solves the problem of the lack of a systematic optimization method in existing technologies. The method includes: estimating the critical velocity for seepage at the jet orifices; calculating and initially selecting the required number of jet orifices, the total length and number of all jet pipes, and initially selecting the airflow distributor structure; determining the frictional resistance coefficient f, momentum recovery coefficient k, and jet orifice flow coefficient c; analyzing the pressure drop distribution characteristics along the pipe length and the total pressure loss within the pipe; based on the analysis results, determining the airflow distributor parameter combination that meets the conditions; and outputting the final airflow distributor design parameters when the jet velocity and non-uniformity of each jet orifice simultaneously meet the preset seepage prevention conditions and non-uniformity requirements. This invention achieves optimized design of the airflow distributor structure.

A method and system can be provided for capturing carbon dioxide (CO2) from gas streams containing CO2 and water using high-silicon, low-aluminum pentasil zeolite adsorbents. In some examples, the adsorbents, for example, are characterized by a silicon-to-aluminum molar ratio greater than 500:1 or are substantially aluminum-free, exhibiting high CO2 selectivity and hydrophobicity to minimize water competition. The adsorption may occur under controlled pressure and temperature, followed by desorption to release CO2 and regenerate the adsorbent, which then supports repeated adsorption-desorption cycles with stable CO2 capacity, thereby enabling efficient carbon capture from combustion exhaust or biogas for storage, utilization, or further processing.

This invention provides a hydrogen generation system that appropriately generates and stores hydrogen by controlling the amount of hydrogen produced. One aspect of the hydrogen generation system includes a hydrogen generation unit, a hydrogen storage unit, a residual quantity acquisition unit, and a control unit. The hydrogen generation unit uses biogas produced from biomass to generate hydrogen. The hydrogen storage unit stores the generated hydrogen. The residual quantity acquisition unit acquires information about the residual amount of hydrogen in the hydrogen storage unit. The control unit controls the amount of biogas produced by the hydrogen generation unit based on the residual quantity information.

The present invention relates to a method for use in a biogas plant having at least one digester (12) and a thermal treatment unit (50), the method comprising the steps of : a ) anaerobically digesting an organic biomass (18) in at least one digester (12) through microorganisms at a temperature below 50 ° C to produce methane-containing biogas (16) and a digestate (14); b) removing a major fraction (32) of the digestate (14) from the digestion process after a fast retention time t and subjecting at least part of said major digestate fraction (32) to a thermal treatment in a thermal treatment unit (50) at a temperature above 175 ° C for at least one minute, wherein the thermal treatment step involves at least one treatment selected from the group consisting of pyrolysis, torrefaction, gasification, hydrothermal gasification, hydrothermal carbonization and hydrothermal liquefaction; and c ) retrieving a minor fraction (34) of the digestate (14) from the digestion process after an inoculum retention time T that is longer than the fast retention time t, returning said minor digestate fraction (34) into the digestion process and mixing the minor digestate fraction with the organic biomass (18) within the digester (12).

Adsorbent material capable of reversibly binding carbon dioxide, said adsorbent material being particularly utilized for separating gaseous carbon dioxide from a gas mixture, preferably from at least one of ambient atmospheric air (1), off-gases and biogas, preferably for direct air capture, using a temperature swing process, a vacuum swing process, or a temperature / vacuum swing process, wherein the adsorbent material (3) is a particulate copolymer material based on at least one of an amino monoallyl monomer building unit or a precursor thereof and an amino mono vinyl monomer building unit or a precursor thereof, copolymerized with a divinyl building unit, wherein at least one of the amino monoallyl monomer building unit or a precursor thereof and the amino mono vinyl monomer building unit or a precursor thereof is a non-aromatic monomer building unit having 2 to 4 carbon atoms, and wherein the molar proportion of the divinyl building unit relative to the sum of the following building units: divinyl building unit; and at least one of the amino monoallyl monomer building unit or a precursor thereof and the amino mono vinyl monomer building unit or a precursor thereof; and, if present, further building units, is in the range of 10% to 20%.

This utility model discloses a reaction system that facilitates the rapid formation of aerobic granular sludge, including a bioreactor body (1). The bioreactor body (1) is cylindrical, with a conical anoxic denitrification zone (4) integrated at the bottom. An aeration unit is located near the anoxic denitrification zone (4) at the lower part of the cylindrical body. A funnel-shaped hydrocyclone (9) is located at the upper part of the cylindrical body. An inlet pipe (2) is vertically inserted in the middle of the hydrocyclone (9). A water collection tank (13) is located near the upper end of the bioreactor body (1). This utility model has a high volumetric loading rate of 5-10 kg / m3·d, so the bioreactor volume is small, about 1 / 10 of that of the activated sludge process. The dissolved oxygen is low, controlled at 0.7-1.5 mg / L, saving power consumption and reducing carbon source consumption. There is less residual sludge and less biogas, resulting in lower operating costs. The effluent quality is good, reaching Class A.

An eFuels plant and process for producing synthetic hydrocarbons using renewable energy are disclosed. The eFuels plant comprises a hydrocarbon synthesis (HS) system and a renewable feed and carbon / energy recovery (RFCER) system. A process for treating wastewater in the eFuels production system comprises adding wastewater streams from the HS system to an anaerobic buffer tank to produce an inventory of untreated wastewater. The relative amounts of the HS system wastewater streams are controlled such that the inventory of untreated wastewater has a target chemical oxygen demand (COD) and / or a target biochemical oxygen demand (BOD). A first amount of the inventory of untreated water is added to an anaerobic biodigester to produce a first treated water stream and a biogas stream, and a second amount of the inventory of untreated water and the first treated water stream are added to an aerobic buffer tank to produce an inventory of aerobic feed water. The relative amounts of the first treated water and the untreated water added to the aerobic buffer tank such that the inventory of aerobic feed water are controlled such that the inventory of aerobic feed water has a target COD and / or a target BOD. A portion of the inventory of aerobic feed and an amount of air to an aerobic biodigester to produce a second treated water stream and a first sludge.

Evegrocer – a sustainable supply chain that promotes circular supply chain through reverse logistics and IOT-powered reusable containers has designed a utility model to streamline an innovative system and method for converting Supply chain food waste into Bioenergy while capturing and storing carbon emissions to achieve a net-negative carbon impact. The facility integrates advanced anaerobic digestion technology to process organic waste into biogas, consisting primarily of methane (CH4) and carbon dioxide (CO2). The biogas is upgraded to separate methane for energy generation and CO2 for sequestration. The system includes modular components for waste intake, pre-treatment, digestion, biogas purification, energy generation, and carbon storage, designed to handle variable waste compositions from retail, wholesale, and logistics sources efficiently. Additionally, the system incorporates IoT sensors for real-time monitoring, optimizing operational performance, and ensuring compliance with environmental standards. This utility model addresses the dual challenges of food waste management and greenhouse gas emissions by creating a circular economy solution that transforms waste into renewable energy while contributing to global decarbonization goals.

This application discloses a simulation device for the injection mode of bio-enhancing fluid in low-yield coalbed methane wells, solving the technical problem that existing technologies cannot simulate the injection mode. It includes a housing, a simulated coal sample, a bacterial solution storage structure, a biogas extraction and collection device, a liquid diffusion range detection device, and a coal sample pore pressure detection device. The simulated coal sample is filled into the housing. The bacterial solution storage structure is used to inject the bio-enhancing fluid into the housing. The biogas extraction and collection device is used to collect the gas generated in the housing. The liquid diffusion range detection device includes a resistivity detector and several metal particles, used to detect the diffusion range of the bio-enhancing fluid in the simulated coal sample. The coal sample pore pressure detection device is used to detect the pore pressure in the simulated coal sample. The simulation device for the injection mode of bio-enhancing fluid in low-yield coalbed methane wells disclosed in this application can simulate the injection mode of bio-enhancing fluid under various coal seam structures, thereby selecting the optimal injection mode suitable for different coal seam structures.

Systems and methods for wastewater treatment are described. In some embodiments, a wastewater treatment system may include a container configured to receive and store at least a portion of incoming wastewater during a digestion process that generates biogas and a biogas burner. The biogas burner may be arranged to receive and burn at least a portion of the biogas generated by the digestion process. The system may be configured to heat solids separated from the wastewater such that: (i) the solids separated from the wastewater are maintained at a temperature of at least 70° C. for at least 30 minutes; and / or (ii) a water content of the solids separated from the wastewater is less than 15% by mass.

This invention discloses a micro-electric field-stimulated coupled anaerobic membrane distillation reactor and its method for enhancing methanogenesis, belonging to the field of wastewater treatment and resource utilization technology. The reactor includes an anaerobic reaction tank, a micro-electric field stimulation unit, a membrane distillation assembly, a temperature control unit, an influent unit, a condensation and collection unit, a vacuum pump, and a biogas collection unit. The micro-electric field stimulation unit consists of a composite anode, a carbon brush cathode, and an external DC power supply, applying a micro-electric field of 0.3~0.8V. The method includes inoculating anaerobic sludge, adding kitchen wastewater and / or landfill leachate, starting membrane distillation at 45~65℃ and applying a micro-electric field, gradually increasing the proportion of landfill leachate, collecting biogas, and monitoring methane content. This invention utilizes a low-voltage micro-electric field to promote interspecies electron transfer, achieving a methane yield exceeding 340mL / gCOD at a 1:1 ratio of kitchen wastewater to landfill leachate, approximately 40% higher than the control, and enhancing the system's resistance to shock loads and metabolic recovery capacity.