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166
resultados
Última actualización
04/07/2025 [06:53:00]
Resultados 150 a 166 de 166
Resumen de: CN119592425A
The invention relates to a gas power plant flue gas treatment technology, and aims to provide a method for fixing frequent peak regulation gas power plant flue gas carbon dioxide through chlorella. The method comprises the steps that high-temperature flue gas of a gas power plant is cooled and filtered, obtained reaction gas is introduced into a chlorella carbon sequestration system, the chlorella carbon sequestration system is composed of a high-carbon grease algae powder area, a medium-carbon protein algae powder area and a low-carbon starch algae powder area, and each area comprises a photobioreactor containing chlorella liquid and a culture medium; sequentially connecting the photobioreactors of the three subareas so that the photobioreactors operate in a series connection manner; the change of the growth stage of chlorella is influenced by changing different nitrogen element content conditions and illumination conditions, so that the growth carbon sequestration metabolic pathway of chlorella is regulated and controlled in the face of CO2 with different concentrations. According to the invention, the growth habit adjustment of chlorella can be controlled by using different nitrogen environments and illumination conditions, so that the microalgae carbon sequestration system can adapt to the CO2 concentration change in a wider range.
Resumen de: CN119592426A
The invention discloses a genetically engineered algae for inhibiting protozoa and a construction method and application thereof, and is characterized in that the genetically engineered algae is phaeodactylum tricornutum into which an expression plasmid pPha-T1-eGFP-Linker-EP2 is introduced, and the nucleotide sequence of the expression plasmid is as shown in SEQ ID NO: 7. The construction method comprises the following steps: artificially synthesizing an EP2 coding sequence optimized by a codon; a step of inserting the expression vector into the downstream of the eGFP of the expression vector, and expressing a plasmid pPha-T1-eGFP-Linker-EP2; the method comprises the following steps of: electrically transforming expression plasmids into phaeodactylum tricornutum, and coating transformed phaeodactylum tricornutum cells on an f/2 plate culture medium for culturing and screening positive algae strains to obtain the genetically engineered algae for inhibiting protozoa, and has the advantages that the large-scale culture efficiency and success rate of microalgae are improved, and the genetically engineered algae have a strong inhibition effect on Tophelenium sectorius and Tophelenium lakeri.
Resumen de: CN119592601A
The invention discloses a transgenic synechocystis strain with enhanced stress resistance and application of the transgenic synechocystis strain in sewage treatment, and belongs to the technical field of microorganisms. According to the invention, the MntH gene is integrated into the genome of the synechocystis PCC6803, so that the transgenic synechocystis PCC6803 is constructed. Through stress of Cr < 6 + > metal ions and hydrogen peroxide, the difference of stress resistance between algae strains before and after transformation is verified. The result shows that the stress resistance of the synechocystis strain is effectively improved by inserting the functional element gene MntH into the genome of the synechocystis PCC6803. Under stress culture of hydrogen peroxide or Cr < 6 + > metal ions, the transgenic algal strain shows better stress resistance, the growth condition is better than that of a wild algal strain, and meanwhile, the content of photosynthetic pigment, protein and the like related to the growth of the transgenic algal strain is higher than that of the wild algal strain. The invention provides a technical means for constructing transgenic algal strains with enhanced stress resistance and researching physiological and metabolic functions of microalgae.
Resumen de: CN119591286A
The invention discloses an organic wastewater treatment device coupling photocatalysis and microalgae carbon sequestration. The organic wastewater treatment device comprises a photocatalytic degradation device, a microalgae carbon sequestration device and a light guide nuclear pore filter membrane, the front end of the photocatalytic degradation device is provided with a water inlet, and the tail end is provided with a water outlet of which the pipe diameter is smaller than that of the water inlet; the light guide nuclear pore filter membrane is mounted at the top of the photocatalytic degradation device above the baffle plate; a feeding hole is formed in the top of the microalgae carbon sequestration device; a detachable visible light emitting plate is arranged in the microalgae carbon sequestration device. According to the method, electricity is generated in the photocatalytic degradation process, waste recycling is achieved, and generated carbon dioxide provides a carbon source for carbon sequestration microalgae. The microalgae absorb carbon dioxide generated by photocatalysis through photosynthesis. The microalgae cells are converted into energy substances such as biodiesel while realizing emission reduction, so that the effects of saving energy, reducing emission and improving the water treatment efficiency are realized.
Resumen de: CN119592438A
The invention relates to the field of microalgae, and discloses a floating microalgae screening method suitable for floating culture and a microalgae floating culture method.The screening method comprises the steps that microalgae is inoculated and then cultured for 24 h or above, then standing is conducted for 6-12 h, the proportion of the dry weight of algae cells floating within 1 cm of the liquid level to the total dry weight of algae is measured, and the total dry weight of the algae is calculated according to the ratio of the dry weight of the algae cells floating within 1 cm of the liquid level to the total dry weight of the algae; screening microalgae with the proportion of more than 25wt% to obtain floating microalgae; wherein the culture time enables the OD (optical density) of the algae in the algae liquid to reach more than 0.2; wherein the standing condition is as follows: the illumination intensity is 20000 to 40000 lux. The screened spirulina can be used for floating culture, so that the biomass equivalent to that under a stirring culture condition can be obtained while the energy consumption caused by driving the spirulina liquid is greatly reduced.
Resumen de: CN119570629A
The invention relates to the technical field of microalgae biology, in particular to a chlorella pyrenoidosa mutant strain and application thereof. According to the invention, a mutagenesis screening mode is adopted to obtain a chlorella pyrenoidosa mutant strain which is named as RMCP012, the chlorella pyrenoidosa mutant strain can still grow quickly after being continuously cultured for one year and is stable in character, and the protein content of the chlorella pyrenoidosa mutant strain is equivalent to that of a wild type chlorella pyrenoidosa mutant strain. Meanwhile, the algal strain of the mutant strain is light green, the decoloring process of industrial production of algal source protein is greatly reduced, the industrial cost is reduced, and the mutant strain is a high-quality algal strain capable of being used for industrial production of protein. The invention further relates to a heterotrophic culture mode of the chlorella pyrenoidosa, so that the chlorella pyrenoidosa can grow quickly, and protein with a relatively high level can be accumulated.
Resumen de: CN119569240A
The invention relates to the technical field of bioengineering, in particular to a combined carbon sequestration method for treating radioactive strontium pollution of seawater by porphyridium. The method comprises the following steps: inoculating a porphyridium strain into a radioactive strontium polluted seawater culture medium for treatment, adding a certain content of inorganic salt and trace element solution, continuously illuminating, and controlling the temperature, illumination intensity, sterile mixed gas ventilation rate and carbon dioxide ventilation concentration to realize the effect of treating seawater radioactive strontium pollution by porphyridium and combining carbon sequestration. The concentration of strontium element in seawater and the fixation of carbon dioxide are realized by utilizing the growth of porphyridium. According to the method, microalgae carbon sequestration is combined with wastewater treatment and biofuel production, so that the method has remarkable environmental and economic advantages, and the production cost and the energy consumption can be reduced to a certain extent. The method is easy to operate and low in cost and has certain universality.
Resumen de: CN119570683A
The invention provides a cyanobacteria separation and purification method. The method comprises the following steps: collecting a water sample; diluting the water sample; a step of culturing; a selection step; selecting a culture hole only with a single filament and without other cells by using a microscope, selecting a single algal filament from the remaining culture holes under the microscope by using a glass capillary tube, removing impurities and foreign matters attached to the surfaces of the algal cells, and transferring the algal cells into another culture hole for continuous culture; and enlarging the culture step. According to the method, the dilution culture method and the capillary separation method are combined for separation and purification of the cylindrospora, so that the separation and purification efficiency is improved.
Resumen de: CN119570630A
The invention discloses a microalgae saline-alkali soil conditioner and application thereof, and belongs to the technical field of microalgae saline-alkali soil conditioners. The microalgae saline-alkali soil conditioner disclosed by the invention is prepared from three microalgae which are respectively chlorella sorojin, nodularia harneri and chlamydomonas reinhardtii, and the volume percentages of the three microalgae are respectively 40 to 60 percent, 20 to 30 percent and 20 to 30 percent. The invention further provides a method for improving saline-alkali soil by using the microalgae saline-alkali soil conditioner, after the microalgae saline-alkali soil conditioner is used, the saline-alkali content of the soil can be effectively reduced, the salt content of a saline-alkali soil plough layer is reduced by 10%-30%, and the pH value is reduced by 0.2-0.8. The product and the method provided by the invention have good application prospects in the aspect of saline-alkali soil improvement, and are worthy of vigorous popularization.
Resumen de: CN119569238A
The invention discloses a method for enhancing the sewage carbon sequestration performance of a bacterium-algae system, and belongs to the technical field of sewage treatment pollution reduction and carbon reduction. According to the invention, the hydrogen production type composite photocatalytic material is used as a biological carrier for treating sewage by a bacteria-algae symbiotic system, so that the problem that microalgae are subjected to light inhibition under sunlight is effectively solved on the basis of ensuring the sewage treatment effect, thereby remarkably improving the light energy conversion efficiency of the microalgae and reducing the energy consumption of the microalgae. The efficient carbon sequestration of the sewage treated by the bacteria-algae symbiotic system is realized, and meanwhile, the hydrogen generated by the method can be recycled as energy gas, so that multiple effects are achieved. The method is helpful for promoting pollution reduction, carbon reduction and resource utilization of sewage treatment, and has a good application prospect.
Resumen de: CN119570778A
The invention relates to the field of microalgae culture, in particular to a solid microalgae-containing composition for culturing fresh microalgae as well as a preparation method and application of the solid microalgae-containing composition. The composition containing the solid microalgae and used for culturing the fresh microalgae comprises live microalgae cells and food-grade gel. The viable microalgae cells are algae species with an appropriate pH value of 6 to 8.2 and/or algae species with an appropriate pH value of 8.3 to 13. The food grade gel is insoluble in the culture medium of microalgae and can support the growth of live microalgae cells. The composition containing the solid microalgae is aseptically packaged in the soft photobioreactor, and can be preserved for a long time. By utilizing the composition containing the solid microalgae disclosed by the invention, the sanitary fresh microalgae which can be directly eaten can be easily prepared by residents. According to the method, the sanitation problem of preparing the fresh microalgae by an existing liquid culture process is solved, and the tedious processes of harvesting algae cells, washing algae mud, cleaning and maintaining a culture device and the like in liquid culture can be avoided.
Resumen de: CN222574660U
A microalgae harvesting device based on algal-bacterial symbiosis comprises a reaction barrel (3), a first culture barrel (4), a second culture barrel (5), a mounting seat (1) and a valve (2). The reaction barrel, the first culture barrel and the second culture barrel are mounted on a circular mounting seat in a triangular shape; a valve is arranged on the base between every two barrels, and the valves are respectively connected with the lower parts of the two adjacent barrels through pipelines; a mounting cover (7) is arranged at the upper part of each barrel, a driving assembly (8) is mounted on each mounting cover, and the driving assemblies are connected with the stirrers in the barrels. The device disclosed by the utility model is relatively high in overall integration, the overall occupied space of the device is reduced, an operator can place the device conveniently during use, in the specific operation process, the product conveying time can be shortened, unnecessary loss is avoided, the product is conveyed by adopting an independent pipeline, and the doping problem caused by circulating conveying of the same pipeline can be avoided.
Resumen de: CN222574616U
The photobioreactor comprises a bottom plate, a bottom cover is arranged on the bottom plate, a top cover is arranged on the upper side of the bottom cover, a culture cylinder is arranged between the bottom cover and the top cover, installation assemblies are arranged at the upper end and the lower end of the outer side wall of the culture cylinder, lamp tubes are arranged on the two sides of the culture cylinder, and the lamp tubes are connected with the bottom cover. The lamp tube is arranged between the two mounting assemblies, each mounting assembly comprises a mounting ring, the lamp tube is mounted between the two mounting assemblies, so that the lamp tube can rotate at a constant speed on the outer side of the culture cylinder, light emitted by the lamp tube is swept through the side face of the culture cylinder at a constant speed, a light source is prevented from stopping on one side of the culture cylinder for a long time, and the culture cylinder is prevented from being damaged. The microalgae are massively gathered on one side, close to the lamp tube, in the reactor to form shielding, so that the condition that the growth of part of the microalgae is blocked due to non-uniform growth of the microalgae in the reactor is prevented.
Resumen de: WO2025048631A1
The present invention relates to the cultivation of mixotrophic microalgae. More particularly, the present invention relates to a method for cultivation of mixotrophic microalgae, comprising the steps of (a) acidifying a feedstock obtained from palm oil industry using hydrolytic microorganisms, acidogenic microorganisms, and acetogenesis microorganisms under a pH environment between 4 to 5.5 in a first area and obtaining a liquid mixture comprising short-chain organic acids and minerals; (b) feeding the liquid mixture into a second area, wherein the second area comprises microalgae and has a pH environment between 5 to 7; and (c) providing circulation in the first area, second area, or a combination thereof, whereby sediments formed at the bottom is displaced in an upward manner in order to be exposed to air and light in proximity to the surface of the respective area. In the first area, the circulation allows acidification of the feedstock to proceed in a non-anaerobic condition. In the second area, the circulation allows the mixotrophic microalgae at the bottom of the second area to be exposed to air and light so as to improve cultivation efficiency while preventing formation of anaerobic pockets in the liquid mixture which favour the growth of undesirable microorganisms, such as methanogenic microorganisms.
Resumen de: US2025075166A1
The present disclosure provides, among other things, devices and methods for harvesting algae (e.g., microalgae) from algae culture growth media to produce a dried algae product and purified water.
Nº publicación: WO2025047986A1 06/03/2025
Solicitante:
UTSUNOMIYA UNIV [JP]
KJ BIO CO LTD [JP]
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Resumen de: WO2025047986A1
This greenhouse gas production inhibitor contains microalgae belonging to the genus Coccomyxa.
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