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A METHOD FOR PREPARING AND SELECTING A POLYMERIC FLOCCULANT FOR USE IN HARVESTING MICROALGAE

Resumen de: AU2023350703A1

The present invention relates to a method for harvesting microalgae, the method comprising (i) mixing one or more monomers, a photoinitiator, water and a deoxygenation system to form a mixture; (ii) exposing the mixture to UV light so as to form an aqueous solution of one or more polymers; (iii) introducing the aqueous solution of one or more polymers to a suspension comprising microalgae in an amount sufficient to produce flocculated microalgae; and (iv) harvesting the flocculated microalgae. The present invention also relates to a method for preparing and selecting a polymeric flocculant for use in harvesting microalgae and a related apparatus.

PHOTOBIOREACTOR AND METHOD FOR GROWING MICROALGAL-TYPE BIOLOGICAL ORGANISMS

Resumen de: WO2024068658A1

The invention relates to a photobioreactor (1) for growing microalgal-type biological organisms, the growth being based on autotrophy under light that is essentially, or even exclusively, artificial, wherein the organisms grow in a nutrient-rich liquid substrate circulating in the photobioreactor, the photobioreactor comprising at least one cell (3) referred to as an illuminated cell, the photobioreactor (1) being characterized in that the illuminated cell (3) comprises at least one spiral-shaped transparent pipe and in that the illuminated cell (3) comprises at least two sections referred to as lighting sections which are associated with the transparent pipe and arranged on either side of the transparent pipe.

3 Carbon dioxide reduction device comprising three-dimensional porous hydrogel structures and microalgae and manufacturing method thereof

Resumen de: KR20250116963A

본 발명은 3차원 다공성 하이드로겔 구조체 및 미세조류를 포함하는 이산화탄소 저감 장치 및 이의 제조방법에 관한 것으로, 이산화탄소를 흡수하고 산소 및 유기물을 생산할 수 있는 미세조류를 3차원 다공성 하이드로겔 구조체에 포함시킬 경우, 미세조류가 공기 중의 이산화탄소; 및 태양광에 노출되는 표면적이 증가하여 미세조류의 이산화탄소 흡수 속도가 증가하는 것을 확인함으로써, 이산화탄소 저감 장치로써 유용하게 활용될 수 있다.

WET TYPE AIR CLEANERS USING PHOTOSYNTHETIC MICROALGAE

Resumen de: KR20250116443A

광합성 미세조류를 이용한 습식 공기 청정기가 개시된다. 본 발명에 따른 광합성 미세조류를 이용한 습식 공기 청정기는, 광합성 미세조류를 포함하는 배양액을 수용하도록 구성되고, 한쪽에 제1 공기 유입구와 제1 공기 유출구가 구분되어 마련되며, 내측 상부에 상기 제1 공기 유입구와 상기 제1 공기 유출구를 구분하기 위한 격막이 마련된 빛 투과재질로 된 배양액 용기; 하부에 광촉매 필터를 구비한 거름부가 마련되고 일측 측벽에는 상기 제1 공기 유입구 및 상기 제1 공기 유출구에 각각 대응되는 제2 공기 유입구 및 제2 공기 유출구가 각각 마련되고, 일측면에는 상기 제2 공기 유입구와 연통되는 제3 공기 유입구가 마련되며, 타측면에는 상기 제2 공기 유출구와 연통되는 제3 공기 유출구가 마련되는 하우징; 및 상기 제3 공기 유입구로부터 유입되는 외부공기를 필터로 여과한 후 버블 발생기를 통하여 상기 제2 공기 유입구로 미세 버블을 공급하도록 구성되어 상기 하우징의 내부에 마련되는 공기 공급기를 포함하고, 외부공기가 상기 버블 발생기를 통하여 상기 배양액을 통과할 때 상기 광합성 미세조류의 광합성으로 이산화탄소가 소비되고, 미세조류의 광합성으로 생성된 산소가 배양액을 통과한 공기와 함께 상기 제3

System and method for scalable production of cyanobacteria biomass

Resumen de: WO2024134649A1

Method and system for producing edible filamentous fresh cyanobacteria biomass. A rotary drum filtration unit filters a cultivated cyanobacteria in a primary filtration to obtain a filtrated cyanobacteria biomass. The filtration unit includes a rotatable filtering drum including a filtration basket including a thermally coupled mesh netting, configured for retaining particles above a selected size when filtering drum is rotated. The filtrated cyanobacteria biomass is washed and neutralized using a solution introduced to the filtration unit during or after primary filtration. A pressing unit applies a pressing to the biomass to concentrate the solid content. Cultivated cyanobacteria may undergo initial microfiltration to remove large impurities prior to primary filtration. Cultivated cyanobacteria may initially be pumped from a cultivation vessel using a low-shear pump. Cyanobacteria biomass may undergo cooling prior to primary filtration. Pressed biomass may be packaged and frozen to produce a cyanobacteria product for edible consumption.

Floating type offshore comprehensive utilization platform

Resumen de: CN120397179A

The invention provides a floating type offshore comprehensive utilization platform. The floating type offshore comprehensive utilization platform comprises a floating body platform, a buoy, a supporting unit, a photovoltaic module, a microalgae culture bin, a circulating water tank and a rough machining tank, a plurality of buoys extending below the sea level are arranged at the bottom of the floating body platform, and supporting units are arranged between the buoys and the floating body platform; the microalgae cultivation bin is arranged below the sea level, and the microalgae cultivation bin is fixed to the supporting unit; the circulating water tank and the rough machining tank are both arranged on the floating body platform, the first output end of the circulating water tank is connected with one end of the microalgae cultivation bin, and the first input end of the circulating water tank is connected with the other end of the microalgae cultivation bin through the rough machining tank. The method has the technical effects that the integration of offshore power generation and offshore high-value microalgae culture is realized, and the total income is increased; a marine photovoltaic floating body platform is fully utilized, a culture space and an equipment platform are provided for microalgae culture, and the photovoltaic module has the advantage of self-energy supply.

Method for improving astaxanthin produced by haematococcus pluvialis

Resumen de: CN120400290A

The invention belongs to the field of industrial application of microalgae, and provides a method for improving astaxanthin produced by haematococcus pluvialis. Comprising the following steps: 1, culturing haematococcus pluvialis to a logarithmic phase; 2, the haematococcus pluvialis is diluted to a proper concentration, and a seed solution for producing astaxanthin from the haematococcus pluvialis is prepared; 3, respectively adding six pre-prepared inducers including creatine, glycine, 6-aminocaproic acid, glutamic acid, L-hydroxyproline and L-cysteine into the prepared haematococcus pluvialis liquid for induction; and 4, continuously filling sterile air into the haematococcus pluvialis liquid added with the inducer in a photobioreactor, culturing, and inducing haematococcus pluvialis cells to accumulate astaxanthin. The invention discloses a method for improving astaxanthin produced by haematococcus pluvialis. The haematococcus pluvialis can be promoted to accumulate a large amount of astaxanthin, and the production cycle of the astaxanthin is shortened. The method is easy to operate, high in efficiency, low in cost and completely suitable for industrial culture of haematococcus pluvialis.

NOVEL MICROALGAE AND USE FOR SAME

Resumen de: US2025243450A1

Provided is an alga belonging to Cyanidiophyceae having a diploid cell and a haploid cell form. Also provided is a nutrient composition containing an alga belonging to Cyanidiophyceae or an extract thereof.

AN ON-SITE MODULAR SYSTEM FOR PROCESSING AND TRANSFORMING ANIMAL WASTE AND A PROCESS AND USES THEREOF

Resumen de: WO2025158072A1

AN ON-SITE MODULAR SYSTEM FOR PROCESSING AND TRANSFORMING ANIMAL WASTE AND A PROCESS AND USES THEREOF The present invention relates to an on-site modular system for processing and transforming animal waste. The present invention also relates to a process for transforming animal waste in situ using said on-site modular system. The present invention further relates to the uses and derived advantages in terms of farm greenhouse gas emissions management and agricultural or natural soil amendments of a processed rich-nutrients biologically absorbable nitrogen-rich phosphorus-rich potassium-rich liquid microalgae culture fraction obtained with the process of the invention. Besides, the invention further relates to the uses as recycler of toxic or contaminants in animal waste farm and/or for animal feed of a processed rich-carbon solid inactivated microalgae culture fraction obtained with the process of the invention.

NOVEL MICROALGAE AND USE FOR SAME

Resumen de: US2025243449A1

Provided is an alga belonging to Cyanidiophyceae having a diploid cell and a haploid cell form. Also provided is a nutrient composition containing an alga belonging to Cyanidiophyceae or an extract thereof.

AN ON-SITE MODULAR SYSTEM FOR PROCESSING AND TRANSFORMING ANIMAL WASTE AND A PROCESS AND USES THEREOF

Resumen de: EP4592257A1

The present invention relates to an on-site modular system for processing and transforming animal waste. The present invention also relates to a process for transforming animal waste in situ using said on-site modular system. The present invention further relates to the uses and derived advantages in terms of farm greenhouse gas emissions management and agricultural or natural soil amendments of a processed rich-nutrients biologically absorbable nitrogen-rich phosphorus-rich potassium-rich liquid microalgae culture fraction obtained with the process of the invention. Besides, the invention further relates to the uses as recycler of toxic or contaminants in animal waste farm and/or for animal feed of a processed rich-carbon solid inactivated microalgae culture fraction obtained with the process of the invention.

COSMETIC USES OF A HYDROLYSATE OF AN EXTRACTION CO-PRODUCT OF THE MICROALGA PHAEODACTYLUM TRICORNUTUM

Resumen de: WO2024062193A1

The invention relates to the cosmetic or nutraceutical use of a hydrolysate of an extraction co-product of the microalga Phaeodactylum tricornutum for exfoliating the skin and/or reducing the microrelief of the skin. The invention also relates to a cosmetic skincare method comprising the topical application of a hydrolysate of an extraction co-product of the microalga P. tricornutum or of a composition comprising same for exfoliating the skin and/or reducing the microrelief of the skin.

Algicidal bacterium and application thereof

Resumen de: CN120384021A

The invention discloses an algicidal bacterium and application thereof, the algicidal bacterium is named as Bacillus sp.L1.3, and is preserved in China Center for Type Culture Collection on March 31, 2025, the preservation address is Wuhan University, Wuhan, China, and the preservation number is CCTCC NO: M 2025629. The nucleotide sequence of the 16S rRNA gene of the strain is as shown in SEQ ID NO: 1. The invention also provides application of the algicidal bacteria in treatment of water bloom of freshwater cyanobacteria, and the freshwater cyanobacteria is microcystis aeruginosa. Fermentation liquor of the strain L1.3 has a strong inhibition effect on growth of microcystis aeruginosa, secretions of the strain L1.3 can destroy cell walls, cell membranes, thylakoid and other structures of algae cells, inhibit photosynthesis of algae and cause irreversible damage to the algae, and the strain L1.3 has wide-range temperature stability and can be used for preparing the microcystis aeruginosa strain L1.3. The bacterial strain is suitable for being prepared into an algicidal bacterial agent to be applied to the field of biological control of freshwater cyanobacterial bloom.

Microalgae-based phosphogypsum low-carbon phosphorus extraction method

Resumen de: CN120384112A

The invention provides a low-carbon phosphorus extraction method for phosphogypsum based on microalgae. Wastewater which is high in phosphorus concentration content and harmless to microalgae growth is obtained by optimizing phosphogypsum pretreatment, a microalgae culture system is constructed by controlling the concentration of the phosphorus-containing wastewater and the ratio of the phosphorus-containing wastewater to a culture medium BG-11, the purposes of low carbon and phosphorus extraction are achieved by controlling culture conditions, CO2 fixation and high-added-value biomass production are achieved at the same time, and the method is green, efficient and suitable for industrial production. The method has a wide application prospect in treating phosphogypsum solid waste and efficiently recovering phosphorus elements.

Monascus microalgae GLY-1 and application thereof

Resumen de: CN120366067A

The invention discloses monolith microalgae GLY-1 and application thereof, and belongs to the technical field of microalgae biology. According to the invention, a microalga GLY-1 in the genus of monolith is separated from a fresh water river, is determined to be a new species of the genus of monolith through morphological and molecular biological identification, is named as Coelastra haikouensis. GLY-1 in taxonomy, is preserved in China Center for Type Culture Collection on March 24, 2025, and has a preservation number of CCTCC No: M2025579. According to the method, the algae fertilizer prepared by using the microalgae GLY-1 is applied when water spinach seedlings grow, so that water spinach plants can grow higher and thicker, and the yield and quality of the water spinach are remarkably improved. The microalgae GLY-1 is proved to have application potential in the aspects of promoting the growth of crops and increasing the yield and quality of the crops.

Double-layer microalgae hydrogel for removing two drugs as well as preparation method and application of double-layer microalgae hydrogel

Resumen de: CN120366064A

The invention discloses double-layer microalgae hydrogel for removing two drugs as well as a preparation method and application of the double-layer microalgae hydrogel, and belongs to the technical field of microorganism application. The invention provides a strain of chlorella sp. Ch-SI50, and the preservation number of the chlorella sp. Ch-SI50 is CCTCC (China Center For Type Culture Collection) NO: M2024223. The double-layer microalgae hydrogel is prepared from the chlorella and hydrogel. The method has the beneficial effects that the microalgae-hydrogel can prevent microalgae from overflowing and polluting the original water environment while removing pollutants, and the method is a sewage purification scheme integrating physical adsorption and microalgae degradation. Therefore, the microalgae-hydrogel can be applied to typical polluted water containing drug wastewater to remove drug pollutants, protect water quality and maintain ecological balance.

Microalgae culture equipment in optical fiber light guide mode

Resumen de: CN223150564U

The utility model discloses microalgae culture equipment in an optical fiber light guide mode. The microalgae culture equipment comprises an indoor culture space; the light source unit comprises a preset number of sun-tracking light guide lighting devices, and each sun-tracking light guide lighting device is composed of a sun-tracking module, one or more light guide optical fiber tubes, one or more sunlight collecting modules and a light source projection mounting bracket; the microalgae culture unit consists of a culture container mounting bracket, a microalgae culture container, an automatic electrical box, a culture solution circulating module, a nutrient supplementing module, an air CO2 supply module, a culture solution recycling module and an environment monitoring module; and the power supply unit is used for supplying power required by the light source unit, the microalgae culture unit and other units. According to the utility model, the advantages of outdoor sunshine culture and indoor artificial illumination culture are integrated, natural sunlight is obtained as a growth light source through sun-tracking light guide optical fiber illumination, and an indoor mode which is easy to obtain in a culture place is adopted, so that energy conservation and convenience are realized, and a greater contribution is made to net zero carbon reduction.

Livestock and poultry breeding wastewater treatment device and method based on microbial deodorization

Resumen de: CN120364868A

The invention discloses a livestock and poultry breeding wastewater treatment device and method based on microbial deodorization, the device comprises a treatment tank, a biological cabin, a liquid inlet port, a liquid outlet port and a driving motor, the biological cabin is sequentially provided with first-stage to fifth-stage implantation areas, each stage of implantation area is formed by separation of a separation disc seat, and the separation disc seat is provided with a liquid inlet port and a liquid outlet port; implantation edges with different microorganism attachment structures are arranged in the device, and a multi-stage synergistic purification system is formed in combination with a rotary turbulent flow guide wheel and a liquid distribution mechanism. Each stage is respectively used for acid production, methane production, denitrification, nitrification and microalgae-spore bacterium terminal deodorization, so that volatile fatty acid, ammonia nitrogen, nitrate and residual odor substances are efficiently removed. The device is compact in structure and clear in partition, has the functions of self-disturbance, self-cleaning and tail end illumination enhancement, and is suitable for segmented deodorization and purification treatment of livestock and poultry breeding high-load wastewater.

Method for regulating competition among microalgae by utilizing rose kocuria and application of method

Resumen de: CN120366066A

The invention provides a method for regulating competition among microalgae by using bacterium Kocuria rosea and application of the method. According to the method, through a co-culture experiment and environmental factor research, the key effect of the rose kocuria in regulation of competition of the chlorella and the karenia mikimotoi is disclosed, and an effective means for improving productivity and controlling harmful algal blooms is provided for aquaculture.

Microfluidic chip for microalgae growth stress detection and microscopic image analysis method

Resumen de: CN120366019A

The invention discloses a micro-fluidic chip for microalgae growth stress detection and a microscopic image analysis method, and belongs to the technical field of cell monitoring, the micro-fluidic chip comprises an inlet, the right side of the inlet is connected with a cell leading-in area, the right side of the cell leading-in area is connected with a cell arrangement area, the cell arrangement area comprises at least one micro-convex flow channel, and the micro-convex flow channel is connected with the micro-convex flow channel. The right port of the micro-convex flow channel is connected with a cell growth area, the cell growth area comprises a narrow flow channel and a culture flow channel arranged in the narrow flow channel, the cell growth area is connected with a discharged liquid collection area, the right end of the discharged liquid collection area is connected with an outlet, and a microscopic camera device is arranged above the culture flow channel. According to the micro-fluidic chip for detecting the growth stress of the microalgae and the microscopic image analysis method, a micro-fluidic environment is constructed on the micro-chip, fine regulation and control on the growth environment of the microalgae cells are realized, the form and behavior change of the microalgae cells can be observed in real time and at high resolution, and the micro-fluidic chip can be used for detecting the growth stress of the microalgae in combination with the microscopic image and

Application of microalgae in killing fecal escherichia coli in wastewater

Resumen de: CN120364866A

The invention belongs to the technical field of water body disinfection, and particularly relates to application of microalgae in killing fecal escherichia coli in wastewater, and the microalgae is one or more of Pediastrum and Chlorella. The application reveals that pH and dissolved oxygen improved by microalgae metabolism can synergistically inactivate fecal escherichia coli for the first time, and a disinfection effect is achieved. In practical application, the removal rate of fecal escherichia coli can reach 100%, removal of pollutants such as TP and TN meets the emission standard, the microalgae can independently treat the polluted water body, pollutants do not need to be removed through a conventional activated sludge method in advance, additional structures do not need to be used for killing microorganisms in the water body, and the method has the advantages of being environmentally friendly and free of pollution. And the construction cost and the operation cost are saved.

PHOTOBIOREACTOR MONITORING OF ALGAE-TO-CO2 MASS RATIOS FOR CARBON CAPTURED BY MICROALGAE

Resumen de: WO2025155916A1

A system and method for quantifying CO2 capture by photobioreactors using microalgal biomass are disclosed. The method involves accurately quantifying carbon dioxide capture by photobioreactors using microalgal biomasses involves determining a unique ratio relating carbon consumed to biomass produced for each microalgae strain. This ratio is then used to predict CO2 removal from flue gases or industrial processes based on the dry mass of the corresponding biomass produced. Machine learning models are also trained on data obtained from said photobioreactors to predict CO2 consumption rates under varying conditions, thereby enhancing the accuracy and efficiency of carbon capture technologies.

TEXTURED FOOD PRODUCT MADE FROM MICROALGAE

Resumen de: WO2025153552A1

The invention relates to the production of a novel food product made from one or more microalgae. It can be used as an intermediate for manufacturing a more complex product intended either for human food or for veterinary food. The invention also relates to the uses of said food product made from one or more microalgae. The invention also relates to a method for producing said food product made from one or more microalgae.

Solar greenhouse microalgae fertilizer in-situ culture device and application system

Resumen de: CN120349853A

The invention discloses a sunlight greenhouse microalgae fertilizer in-situ culture device and an application system, and belongs to the field of microalgae fertilizer in-situ application, the device comprises a wall body, the upper part of the wall body is fixedly connected with a storage box, the wall surface of the wall body is provided with an S-shaped pipeline, one end of the S-shaped pipeline is communicated with the storage box, and the other end of the S-shaped pipeline is communicated with the application system; a return pipe is communicated between the other end of the S-shaped pipeline and the storage box through a shunt pipe; the flow dividing pipe is communicated with a plurality of branch pipes, the plurality of branch pipes are communicated with the S-shaped pipeline, electromagnetic three-way valves are arranged at the joints of the branch pipes and the S-shaped pipeline, and the plurality of electromagnetic three-way valves run from morning to evening along with time, so that the flowing distance of the algae liquid in the storage box in the S-shaped pipeline is gradually shortened; according to the device, the S-shaped pipeline and the electromagnetic three-way valve are matched for use, so that the flowing path of chlorella liquid in the S-shaped pipeline is adjusted according to the sunlight intensity, and the light receiving time and the light receiving area of chlorella are controlled.

Small molecule RNA AsrR9 and application thereof in regulation and control of ammonium salt stress tolerance of synechocystis PCC6803

Nº publicación: CN120350003A 22/07/2025

Solicitante:

SOUTH CHINA UNIV OF TECHNOLOGY
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Resumen de: CN120350003A

The invention discloses a micromolecule RNA AsrR9 and application thereof in regulation and control of ammonium salt stress tolerance of synechocystis PCC6803, and belongs to the field of industrial microorganisms. According to the invention, AsrR9 is subjected to overexpression, such that an overexpressed algae strain OEAsrR9 is obtained. In a BG11 solid culture medium, the growth state of the OEAsrR9 in the range of 30 mM to 120 mM is obviously superior to that of WT. In a BG11 liquid culture medium added with 90 mM to 150 mM of ammonium salt, illumination culture is carried out for five days, the growth condition of the OEAsrR9 on the third day is obviously superior to that of WT, and the growth condition of the WT is obviously superior to that of an inhibiting algae strain SPAsrR9. The OEAsrR9 obtained by the invention provides a genetic engineering algal strain chassis for constructing algal strains tolerant to various environmental stresses, provides important theoretical support for high-concentration and high-ammonia wastewater treatment and biological energy production by utilizing microalgae in the future, and has practical significance and wide application prospects.