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Application of microalgae in removal of selenium in water body

Resumen de: CN119430497A

The invention discloses application of microalgae in removal of selenium in a water body. The invention relates to a result obtained based on the fact that the inventor finds that Coelavastrum sp.GX03 has the effect of removing selenium. The strain can grow in the selenium-polluted water body and can efficiently remove selenium, so that the strain has the application potential of removing selenium in the water body.

Supercritical water treatment device with microalgae carbon sequestration function and use method thereof

Resumen de: CN119425368A

The invention discloses a supercritical water treatment device with a microalgae carbon sequestration function and a use method of the supercritical water treatment device, and relates to the technical field of pollution treatment. Waste gas output by the supercritical water treatment system is introduced into the microalgae culture system for carbon sequestration, the pipeline type microalgae culture system is used for culturing microalgae, and magnetic force is used for controlling a cylindrical block to move in a pipeline so as to timely and effectively clean algae cells adhering to the wall; the supercritical water treatment device has the technical effects that the supercritical water treatment device can treat pollutants, can also perform carbon sequestration treatment on waste gas obtained through treatment, can automatically clean algae cells attached to the wall, and is simple to maintain and high in treatment efficiency.

Method for purifying tetracycline and efficiently producing oil by using microalgae across temperature zones

Resumen de: CN119432936A

The invention discloses a method for purifying tetracycline and efficiently producing oil by using microalgae in a cross-temperature zone, and belongs to the field of microalgae bioengineering. The invention aims to solve the technical problem of tetracycline pollution in the current cold region water environment. The method comprises the following steps: preparing a seed solution for microalgae culture, inoculating the seed solution into a BG-11 culture medium containing tetracycline, culturing until the logarithmic growth later stage of microalgae, centrifugally collecting algae cells, freeze-drying and weighing, and extracting grease in dry algae powder by utilizing an ultrasonication combined organic solvent method. The method disclosed by the invention is simple to operate, can be used for producing biological energy and adsorbing and degrading tetracycline under the low-temperature treatment condition by utilizing the microalgae, meanwhile, the stress resistance of the microalgae under the low-temperature condition is improved, the permeability of algae cells is regulated and controlled, and the production of the microalgae biological energy is promoted. The method disclosed by the invention is used for purifying tetracycline in cross-temperature zones and efficiently producing oil.

Ladder type microalgae bio-membrane reactor

Resumen de: CN119432568A

The invention discloses a ladder type microalgae bio-membrane reactor, which belongs to the technical field of microalgae carbon sequestration and emission reduction, and comprises a box body unit, the microalgae growth unit is arranged in the box body unit, the cross section of the microalgae growth unit is of a stepped structure, the microalgae growth unit comprises a biological membrane substrate, and a microalgae biological membrane is arranged on the surface of the biological membrane substrate; the bearing unit is used for supporting the microalgae growth unit; the conveying unit is used for conveying sewage and air; and the auxiliary growth unit is arranged below the microalgae growth unit and is used for accelerating the growth of the microalgae. By adopting the biological membrane substrate with the step-shaped structure, the occupied area of microalgae emission reduction can be reduced, the space utilization rate is increased, the biomass yield of the microalgae biological membrane in unit occupied area is finally increased, and meanwhile, carbon dioxide is fixed to the maximum extent and nitrogen and phosphorus pollutants in water are purified to the maximum extent.

System and method for improving oil yield and cadmium removal rate of microalgae under cadmium stress

Resumen de: CN119432611A

The invention discloses a system and a method for improving oil yield and cadmium removal rate of microalgae under cadmium stress, and belongs to the technical field of biological engineering. According to the method, a mixotrophic culture mode is adopted, and algae species mixotrophic culture is carried out, so that algae cells rapidly grow in a short time and are cultured to a logarithmic growth expectation for later use; and applying cadmium stress by using the same mixotrophic mode, and simultaneously adding exogenous fulvic acid to induce microalgae to grow and accumulate grease. According to the method, a mixotrophic culture mode is adopted, under the stress of 0.2 mu M Cd, when the concentration of fulvic acid is 40mg/L, the biomass, biomass yield and grease yield of the microalgae are respectively improved by 20.22%, 20.32% and 26.55% compared with those of single cadmium treatment, and the cadmium removal rate is 100% and is improved by 16.6% compared with that of single separation treatment. According to the method, the biomass and grease yield of the microalgae can be improved, meanwhile, removal of cadmium is increased, and a new theoretical basis is provided for co-production of grease by treating cadmium-containing wastewater through the microalgae.

Microalgae cell multistage sorting device based on dielectrophoresis controllable sheath flow

Resumen de: CN119432556A

The invention provides a microalgae cell multistage sorting device based on dielectrophoresis controllable sheath flow. The microalgae cell multistage sorting device comprises a flow channel structure and an electrode substrate which are packaged in a bonding mode. The flow channel structure comprises a liquid inlet, a spiral flow channel, a sudden expansion structure, a first branch flow channel, a second branch flow channel, a deterministic lateral displacement flow channel, a first liquid outlet, a second liquid outlet and a third liquid outlet; the liquid inlet is communicated with the spiral runner; the first branch flow channel and the second branch flow channel are connected to the two ends of the split sudden expansion structure in series. The deterministic lateral displacement runner is connected to the tail end of the second branch runner in series; a second liquid outlet and a third liquid outlet are formed in the tail end of the deterministic lateral displacement runner; the electrode substrate comprises a substrate body and an electrode group; and the electrode group is arranged at the front end of the deterministic lateral displacement runner. According to the invention, sheath flow is accurately controlled through an electrode structure, and high-flux and high-purity separation of single microalgae cells from a mixed solution of three microalgae with different sizes is realized by combining high flux of inertial spirals and high precision of deterministic later

Combined treatment method for algae

Resumen de: CN119432612A

The invention provides an algae combined treatment method, which relates to the technical field of bioengineering, and comprises the following steps: selecting microalgae seeds; inoculating the microalgae seeds into a conical flask of a Basal culture medium; culturing under a dark condition; and after the microalgae seeds are cultured to a plateau stage, supplementing plant hormones and a nitrogen source, and culturing to obtain the microalgae. The algae combined treatment method provided by the invention can effectively stimulate microalgae in a plateau phase, so that the total carotenoid content and the xanthophyll content can be effectively increased.

Preparation method of algal-bacterial symbiotic filler and filler composite structure based on algal-bacterial symbiotic filler

Resumen de: CN119430494A

The invention discloses a preparation method of a bacteria-algae symbiotic filler, which specifically comprises the following steps: adding an activated sludge dispersion liquid into a reactor filled with a filler, operating for 7-10 days under an aeration condition, and introducing simulated tail water in the operation process; then chlorella is inoculated according to the volume ratio of the activated sludge dispersion liquid to the chlorella dispersion liquid being 1: (5-50), operation is conducted for 14-20 days at the temperature of 22-30 DEG C under illumination, and the light-dark ratio is that illumination is conducted for 6-12 h, and darkness is conducted for 12-18 h; tail water of the simulated sewage plant is introduced in the operation process; the filler hung with the algal-bacterial symbiotic biological membrane is obtained. In the formed algal-bacterial symbiotic membrane, the microalgae can promote enrichment of nitrogen and phosphorus removal flora and organic matter metabolism functional flora, and bacteria can improve the photosynthesis performance and carbon sequestration performance of the microalgae through material exchange, information transfer and other ways, so that the algal-bacterial symbiotic system can efficiently purify N/P/organic matter in a water body; meanwhile, the emission of greenhouse gas is reduced. The invention also discloses a filler composite structure based on the algal-bacterial symbiotic filler.

A MICROALGAE CULTIVATION METHOD

Resumen de: WO2025034170A1

There is provided a method of cultivating microalgae, the method comprising: inoculating a culture of microalgae into an inoculum in a bioreactor; and growing the culture of microalgae, the growing comprising feeding a feed medium to the inoculum, wherein the feed medium comprises carbonate solution as a carbon source, and wherein the growing comprises growing the cultivated microalgae in the presence of a quantum dot- comprising light conversion film. There is also provided an apparatus for cultivating microalgae.

PROPYLENE PRODUCTION IN CYANOBACTERIA

Resumen de: WO2025032068A1

The present invention relates to a process for producing propylene and to a cyanobacterial cell for the production of propylene.

Microalgae culture and collection device

Resumen de: CN222455038U

The utility model relates to the technical field of microalgae culture, in particular to a microalgae culture and collection device which comprises a culture box, a PLC (programmable logic controller) fixedly connected to the right side of the culture box, a box cover arranged at the top of the culture box, a handle fixedly connected to the center of the top of the box cover, a plant illumination lamp fixedly connected to the bottom of the box cover, and connecting blocks fixedly connected to the front side and the rear side of the box cover. The top of the front end of the incubator is fixedly connected with a water inlet pipe, the outer side of the water inlet pipe is fixedly sleeved with a first electric control valve, the bottom of the front end of the incubator is fixedly connected with a drainage pipe, the outer side of the drainage pipe is fixedly sleeved with a second electric control valve, a microalgae culture and collection mechanism is arranged in the incubator, and an aeration mechanism is arranged at the bottom end in the incubator. The water temperature is automatically adjusted, the growth speed of the microalgae is further increased, carbon dioxide can be provided for better photosynthesis of the microalgae, and culture of the microalgae is facilitated.

Microalgae culture shelf

Resumen de: CN222454978U

A microalgae culture shelf comprises a support, a plurality of storage box bodies are installed on the support, and a first shading plate is connected to the middle of the bottom of the inner side of each storage box body. The stepping motor can drive the electric push rod to reach the target culture compartment, then the electric push rod can push the culture box into the storage area from the culture compartment, illumination of the algae in the culture box is finished, and therefore experimenters can conveniently control the illumination time of the algae in the culture box.

Preparation method of microalgae-SiO2 bio-based nanofluid dust suppressant

Resumen de: CN119410342A

The invention provides a preparation method of a microalgae-SiO2 bio-based nanofluid dust suppressant, which comprises the following steps: (1) microalgae culture: using a BG-11 culture medium, sterilizing, cooling, inoculating microalgae, carrying out 7-day light/dark cycle culture, and finally filtering and collecting microalgae cells; (2) active component extraction: cleaning microalgae cells, and performing centrifugation, filtration and rotary evaporation treatment through ultrasonic disruption, enzymolysis and a microwave-assisted chloroform-methanol mixed extraction method to obtain microalgae active components; (3) synthesis of SiO2 nanoparticles: mixing the SiO2 precursor with deionized water, adjusting the pH value and diluting, adding microalgae active components, oscillating at a constant temperature, centrifugally separating and purifying the SiO2 nanoparticles; and (4) preparation of the nanofluid dust suppressant: mixing the SiO2 nanoparticles, the microalgae active component and the dispersing agent in water in proportion to prepare the microalgae-SiO2 bio-based nanofluid dust suppressant. The invention is expected to solve the limitation of the traditional dust suppressant, and provides a novel, efficient and environment-friendly dust suppressant preparation method.

Chlorella mutant strain and application thereof in production of EPA and DHA

Resumen de: CN119410486A

The invention provides a chlorella mutant strain and application thereof in production of EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), and belongs to the technical field of microalgae biology. The Chlorella sp. Mutant strain M41 provided by the invention is preserved in the China General Microbiological Culture Collection Center on October 18, 2024, the preservation date is October 18, 2024, and the preservation number is CGMCC No. 46154. The Chlorella sp. Mutant strain M41 provided by the invention has the advantages that the preservation number is CGMCC No. 46154; the invention further provides a culture medium and a production method suitable for the chlorella mutant strain M41, and high yield of EPA and DHA is achieved.

Mine microalgae carbon sequestration emission reduction and resource recycling system

Resumen de: CN119410457A

The invention discloses a mine microalgae carbon sequestration emission reduction and resource recycling system. The system comprises eight modules including a microalgae culture and closed pipeline photobioreactor microalgae culture module, a CO2 capturing and conveying module and a microalgae after-harvesting and processing module. The prepared culture medium and CO2 captured by an air return way are injected into a closed pipeline photobioreactor through a conveying pipeline, and the closed pipeline photobioreactor is provided with various sensors. Monitoring data are uploaded to the intelligent data analysis and optimization module for analysis and processing, and solution filling and environment parameters are intelligently adjusted through the intelligent monitoring and automatic control module; and collecting combustible gas generated by anaerobic fermentation of the microalgae, processing the primarily screened microalgae, and filtering the mine wastewater. According to the method, efficient culture of mine microalgae, efficient emission reduction and resource utilization of CO2 in a mine return airway and cyclic utilization of wastewater can be achieved, the green and low-carbon sustainable development concept is met, and a new solution is provided for the technical field of mine carbon dioxide emission reduction.

Immobilized algal-bacterial symbiotic system and application of immobilized algal-bacterial symbiotic system in harmless treatment of spiramycin production wastewater

Resumen de: CN119410530A

The invention provides an immobilized algal-bacterial symbiotic system and application thereof in harmless treatment of spiramycin production wastewater, and belongs to the technical field of environmental microorganisms. The algal-bacterial symbiotic system comprises bacillus subtilis with the preservation number of CGMCC (China General Microbiological Culture Collection Center) No. 15560 and microcystis aeruginosa FACHB-315. The immobilized microorganism product prepared from the algal-bacterial symbiotic system and the biological adsorption carrier ball has the following advantages: (1) the floatability of microalgae cells and the negative effects caused by discharge of free cells into natural water can be overcome; (2) the SPI removal rate can reach 98.49%, and the SPI removal capacity is high. Therefore, the method can effectively reduce ecological hazards and the like caused by the SPI entering the environment.

A method for enhancing antibacterial activity of microalgal extract using ionizing radiation

Resumen de: KR20250019955A

본 발명은 미세조류 추출물의 방사선 조사물을 유효성분으로 포함하는 세균성점무늬병 또는 벼알세균마름병 방제용 조성물; 항균용 조성물; 상기 방제용 조성물을 식물에 적용하는 단계를 포함하는 세균성점무늬병 또는 벼알세균마름병 방제 방법; 및 미세조류 추출물에 방사선을 조사하는 단계를 포함하는 세균성점무늬병 또는 벼알세균마름병 방제용 조성물의 제조 방법에 관한 것으로서, 본 발명의 조성물 또는 방법을 통해 세균성점무늬병 또는 벼알세균마름병의 방제에 유용하게 사용될 수 있어, 미세조류 추출물을 이용한 항균 제품 개발 및 산업적으로 활용이 가능한 다양한 산업분야에서 유용하게 사용될 수 있다.

Multi-stage constructed wetland-ecological pond system for synchronously and intensively removing nitrogen and phosphorus

Resumen de: CN119409335A

The invention relates to the technical field of sewage treatment, in particular to a multi-stage constructed wetland-ecological pond system for synchronously and intensively removing nitrogen and phosphorus. A first-stage constructed wetland, a second-stage ecological pond and a third-stage constructed wetland which are sequentially connected in a falling manner are arranged in the system, and the first-stage constructed wetland and the third-stage constructed wetland are both horizontal subsurface flow type constructed wetlands; wetland plants are planted in the first-stage constructed wetland and the third-stage constructed wetland; ecological pond plants are planted in the second-stage ecological pond through floating rafts, non-woven fabric is arranged below the floating rafts, and microalgae are enriched on the non-woven fabric; according to the invention, an alternating anaerobic/anoxic-aerobic-anaerobic/anoxic environment formed by each stage of system is utilized to enhance the removal of oxidation-state and reduction-state nitrogen and the absorption and removal of phosphorus, the removal rate of ammonia nitrogen can reach 98%, the removal rate of nitrate nitrogen can reach 98.8%, the removal rate of total nitrogen can reach 98.07%, the removal rate of COD (Chemical Oxygen Demand) can reach 85.02%, and the removal rate of total phosphorus can reach 78%; wide application prospects are realized.

Condensate water heat energy recovery device based on biotechnology

Resumen de: CN119410461A

The invention relates to the technical field of heat energy recovery, in particular to a condensed water heat energy recovery device based on biotechnology, which comprises a microalgae biological reaction tank for providing growth space for microalgae, the microalgae biological reaction tank is provided with microalgae and a nutrient solution, and the top of the microalgae biological reaction tank is fixedly provided with a top cover; the heat exchange assembly is arranged in the microalgae biological reaction tank and is used for uniformly exchanging heat; and the heat exchange assembly comprises a driving shaft which is rotationally connected in the top cover through a bearing. The middle part of the heat exchange pipe is flat, so that the circulation speed of condensed water can be delayed, the heat exchange time of the condensed water is prolonged, the heat exchange efficiency is improved, and meanwhile, when the heat exchange pipe rotates in the microalgae biological reaction tank, heat can be uniformly distributed in the microalgae biological reaction tank, and the heat exchange efficiency is improved. And meanwhile, the brush on the inner wall of the cleaning rubber sleeve moves up and down to clean dirt generated by microalgae growth on the surface of the heat exchange tube, so that the heat exchange efficiency of the heat exchange tube is effectively improved.

Three-dimensional ecological fishpond culture system

Resumen de: CN119385101A

The invention discloses a three-dimensional ecological fishpond culture system in the field of aquaculture. The three-dimensional ecological fishpond culture system comprises the following steps: 1, wastewater collection and pretreatment; 2, sterilizing and preparing a culture medium; 3, live bait is cultured in the runway type culture tank; 4, a water circulation system and continuous filtration; and 5, artificial wetland treatment and pasture planting. According to the breeding system, wastewater generated after breeding is treated, the water quality is improved, sterilization treatment is conducted, appropriate nutritional ingredients are added, and then the wastewater is discharged into the breeding tank containing microalgae and zooplankton to provide needed nutritional ingredients for the microalgae and the zooplankton, so that the microalgae and the zooplankton are massively bred in the water body, bait is brought to fishes in the constructed wetland, and the quality of the fishes in the constructed wetland is improved. The mode that bait is input depending on the outside in traditional cultivation is changed, self-sufficiency of green bait is achieved, and dynamic balance and efficient cyclic utilization of water are achieved.

Microalgae culture device coupled with air purification and fertilizer preparation and use method of microalgae culture device

Resumen de: CN119391502A

The invention relates to a microalgae culture device coupling air purification and fertilizer preparation and a using method thereof.The microalgae culture device comprises a cylinder cover, a cylinder body and a base, the interior of the cylinder body is divided into at least two culture cavities in the circumferential direction, a lamp cavity for containing an auxiliary lamp is formed in the middle of the cylinder body, and a liquid outlet hole with a liquid discharging valve is formed in the bottom of each culture cavity; a sealed cover plate and a fixing ring are arranged at the top of the cylinder body, the fixing ring is in threaded fixation with the top of the cylinder body and clamps the cover plate, exhaust holes and air inlet pipes which are communicated with the culture cavities are integrally arranged on the plate surface of the cover plate, an air pump connected with the air inlet pipes is fixedly arranged in the cylinder cover, and air outlet holes communicated with the exhaust holes are formed in the cylinder cover; and the bottom of the cylinder body is spliced and matched with the base. During use, microalgae liquid is put into the culture cavity of the cylinder body, the whole body is placed at an illumination position or an auxiliary lamp is turned on, and meanwhile, an air pump is turned on, so that microalgae culture and air purification can be realized, and the use is relatively convenient; after being cultured, the microalgae are discharged to the base

Anaerobic ammonium oxidation bacteria, short-cut nitrifying bacteria and microalgae coupling system and domestication method thereof

Resumen de: CN119391620A

The invention relates to the technical field of sewage treatment. The invention discloses an anaerobic ammonium oxidation bacteria, short-cut nitrifying bacteria and microalgae coupling system and a domestication method thereof, which are characterized in that three autotrophic microorganisms with different oxygen requirements are sequentially domesticated by a biological filler according to a sequence of an inner layer, a middle layer and an outer layer to form dissolved oxygen gradient region change. Wherein the microalgae form an oxygen production area in the outer photosynthesis, and the dissolved oxygen concentration in the area is the highest. Short-cut nitrifying bacteria domesticated on the middle-layer biological filler consume oxygen, and the concentration of dissolved oxygen is lower than that of dissolved oxygen in the outer-layer biological filler area. The dissolved oxygen in the inner-layer biological filler area can reach the lowest level, so that the anaerobic ammonium oxidation bacteria can survive suitably, and the stable denitrification of anaerobic ammonium oxidation is ensured. Therefore, the biological membrane obtained by the domestication method provided by the invention is more stable, the mass transfer of the dissolved oxygen is more uniform than that of the traditional mechanical point source aeration, and the influence of the dissolved oxygen on the interior is smaller, so that the treatment effect is more stable. The anaerobic ammonium oxidation

FLOATING PHOTOBIOREACTOR FOR MICROALGAE CULTURE AND BOAT MOORING (Machine-translation by Google Translate, not legally binding)

Resumen de: ES1312856U

Floating photobioreactor for microalgae cultivation and boat mooring, characterized in that the floating photobioreactor (1) has a rigid body in the form of an asymmetric oblate spheroidal buoy composed of a transparent UV-resistant upper dome (2) made of a thermoplastic polymer and a culture tank (3) whose geometry is a slightly conical inverted dome made of a food-grade thermoplastic polymer, both joined by bolts (5) on a perimeter rim (4) of which both elements have; at least and located in the transparent upper dome two hydrophobic gas exchangers with a semipermeable membrane (6), the computer powered by a photovoltaic module (7), the artificial light system (8), the vertical agitator system (9) with blades and two arched windshield wipers (10) attached to the agitator acting against the inside of the transparent dome and rotating together; two inlet connections (12-13) for adding nutrients, water, flocculant or sensors as well as means for draining the culture with at least one outlet connection (11) above the waterline, and a tubular drainage system (14) connected to the base of the culture tank, on the outer face of which is the mooring system (15) formed by at least one eyelet attached to the culture tank. (Machine-translation by Google Translate, not legally binding)

Low-energy-consumption microalgae cell separating and harvesting device and method based on plant fibers

Resumen de: CN119391518A

The invention discloses a low-energy-consumption microalgae cell separating and harvesting device and method based on plant fibers, and particularly relates to the field of microalgae cell concentration and separation. Comprising a separation box, the separation box communicates with a liquid inlet pipe and an air inlet pipe, the liquid inlet pipe is provided with a first valve, the air inlet pipe is connected with an inflation pump, the separation box communicates with a liquid discharging pipe, the liquid discharging pipe is provided with a second valve, the two sides of the separation box communicate with feeding channels, and the space between the two feeding channels is filled with a plant fiber filtering layer. A fixed plate and a movable plate are arranged in the separation box, a first water passing hole is formed in the fixed plate, a driving assembly used for driving the movable plate to slide in the separation box is arranged on the movable plate, and a second water passing hole is formed in the movable plate. By the adoption of the technical scheme, the problem that an existing device cannot achieve efficient collection and separation of a large number of algae cells in an artificial culture scene or an algae bloom scene of unicellular algae is solved, and resource utilization of natural plant fiber materials and efficient harvesting of the algae cells are achieved.

Method for improving algae metabolism and lutein synthesis

Nº publicación: CN119391543A 07/02/2025

Solicitante:

UNIV NANCHANG
\u5357\u660C\u5927\u5B66

Resumen de: CN119391543A

The invention provides a method for improving algae metabolism and lutein synthesis, and relates to the technical field of bioengineering, and the method comprises the following steps: selecting microalgae seeds; inoculating the microalgae seeds into a conical flask of a Basal culture medium; culturing the conical flask under a low-light condition for a predicted number of days; repeating the low-light culture process to obtain a seed solution; and inoculating the obtained seed solution into a conical flask of a Basal culture medium, and continuously culturing to obtain the microalgae. According to the method provided by the invention, growth and lutein accumulation in the process of heterotrophic culture or fed-batch heterotrophic fermentation culture and the like can be effectively promoted after the selected seeds are subjected to low-light pre-culture, so that algae metabolism is accelerated, and the yield of lutein is increased.