Alerta

METHOD OF PRODUCING A FATTY ESTER FROM MICROALGAE

Resumen de: EP4674972A1

The invention relates to a method of producing an ester of a fatty acid and a C₁-C₄ alcohol, comprising successive steps of: cultivating cells of a microalga strain on a growth medium, harvesting the cultivated cells and concentrating them to obtain a wet cell pellet, suspending said wet cell pellet in an hydroalcoholic solution comprising said C₁-C₄ alcohol, incubating the cell suspension thus formed so as to form said ester of a fatty acid and a C₁-C₄ alcohol by transesterification and/or esterification of lipids produced by the microalga cells catalyzed by endogenous enzymes of said cells, and recovering said ester of a fatty acid and a C₁-C₄ alcohol from said cell suspension. The growth medium can advantageously be a dark fermentation effluent.

Method for reducing antibiotic-resistant bacteria and antibiotic-resistant genes in wastewater

Resumen de: CN121269980A

The invention relates to the technical field of biological environmental protection, in particular to a method for reducing antibiotic-resistant bacteria and antibiotic-resistant genes in wastewater. The invention provides a method for reducing antibiotic resistance bacteria and antibiotic resistance genes in wastewater. The method comprises the following steps: mixing an extreme thermophilic and acidophilic microalgae culture with sewage, and culturing in a photobioreactor. According to the method, the extremely thermophilic and acidophilic microalgae are used for sewage treatment, so that not only can the abundance of ARB be reduced, but also the relative abundance of ARGs (qnrA, qnrS, tetW and intI1) in living bacteria can be reduced, and finally, the purpose of controlling ARG and ARB is achieved; meanwhile, the effect of the algae system for controlling the ARG and the ARB is better than that of a conventional secondary treatment system for controlling the ARG and the ARB, and the propagation of antibiotics to the environment can be reduced to the maximum extent.

Fuel production method using microalgae culture provided in a landfill

Resumen de: KR20260001796A

본 발명은 매립지에 미세조류 배양지를 구축하고 여기서 배양한 조류 바이오매스를 이용하여 바이오 항공유를 생산하는 기술에 대한 것이며, 매립 종료된 매립지의 안정화 부지 상부에 구비되는 미세조류 배양지를 설치하는 1단계; 상기 미세조류 배양지에서 미세조류를 배양하는 2단계; 및 상기 1단계에서 배양된 미세조류를 이용하여 항공유를 생산하는 3단계;를 포함하여 이루어지며, 매립지를 활용하며 매립지에서 배출되는 가스를 이용하여 미세조류를 배양하고 이를 통해 지속가능한 연료를 생산할 수 있는 효과가 발휘된다.

Aquaculture wastewater deep purification and algae fertilizer co-production system based on algal-bacterial symbiosis

Resumen de: CN121269974A

The invention relates to the technical field of wastewater treatment and resource utilization, and provides a culture wastewater deep purification and algae fertilizer co-production system based on algal-bacterial symbiosis, the system comprises an algal-bacterial symbiosis reaction zone, an intelligent regulation and control system and an algae fertilizer quality control system, the algal-bacterial symbiosis reaction zone comprises a biological membrane zone and a microalgae zone, the biological membrane area is used for treating the breeding wastewater and completing conversion from ammonia nitrogen to nitrite; the microalgae area is communicated with the biological membrane area, the wastewater treated by the biological membrane area enters the microalgae area, and the microalgae area is used for purifying the wastewater; the algae fertilizer quality control system is communicated with the water outlet end of the microalgae area, the algae fertilizer quality control system comprises an air flotation separation device and a drying machine, the air flotation separation device is used for purifying algae slurry, and the drying machine is connected with the air flotation separation device and is used for drying the separated algae fertilizer. The treatment effect on the breeding wastewater can be improved.

Microalgae carbon sequestration system and use method thereof

Resumen de: CN121270004A

The invention belongs to the technical field of microalgae carbon sequestration, and particularly relates to a microalgae carbon sequestration system, which comprises a precipitation sewage tank, a floating algae liquid tank, a primary reaction column and a water purification tank, sewage in the precipitation sewage tank and floating algae liquid in the floating algae liquid tank are respectively put into the primary reaction column for mixing, standing is carried out, and precipitates are formed; purified water in the first-stage reaction column flows into a purified water tank after being discharged. According to the invention, the sewage is precipitated by using the precipitation sewage tank, part of precipitates in the sewage are removed, then floating algae are added into the first-stage reaction column for removing ammonia nitrogen in the sewage, finally the sewage enters the second-stage reaction column, nitrate nitrogen in the sewage is removed by using fixed algae and nitrifying bacteria in the second-stage reaction column, and the whole system is connected in series, so that the sewage treatment efficiency is improved. Ammonia nitrogen and phosphorus in the sewage can be effectively removed.

Microalgae carbon sequestration device

Resumen de: CN223752732U

The utility model relates to the technical field of ecological environmental protection, in particular to a microalgae carbon sequestration device which comprises a box body, a top frame is installed on the top of the box body, a gas guide pipe is installed on the top frame, the bottom end of the gas guide pipe is rotatably connected with a rotating pipe inserted into the box body in a sliding mode, and the top of the box body is connected with a backflow pipe connected with the gas guide pipe. A return pipe is arranged in the box body, a one-way valve is arranged on the return pipe, the top end of the rotating pipe is in transmission connection with a driving assembly, a fixed ring is fixed on the inner side of the box body, and a gas distribution assembly arranged outside the rotating pipe in a sleeving manner is arranged in the fixed ring. And redundant gas enters the gas guide pipe again from the return pipe, so that the cyclic dissolution work of the carbon dioxide gas is completed, excrement deposited in the collecting hopper is cleaned, and the excrement is conveniently and intensively guided out of the box body from the blow-off pipe.

Method for injecting CO2 in spirulina culture in absence of light

Resumen de: CN121263511A

In general, the invention relates to a device for supplying a plant for growing microalgae, and in particular for growing spirulina, with water in which a given content of CO2 has been dissolved, characterized in that the device enables the dissolution (1, 8, 4...) of CO2 under light-tight conditions, the device is located outside and adjacent to the incubation facility.

Method for researching influence on hemolytic activity of marine microalgae based on transcriptome technology

Resumen de: CN121249843A

The invention discloses a method for researching influence on hemolytic activity of marine microalgae based on a transcriptome technology, and relates to the field of hemolytic activity analys.The method comprises the steps that pretreatment is conducted on the marine microalgae based on culture requirements, and cystic morphological cell density and hemolytic activity of the marine microalgae are measured according to experimental design rules after pretreatment is completed; carrying out transcriptome sample collection operation by utilizing the marine microalgae subjected to pretreatment, constructing a library according to a transcriptome sample collection result, and obtaining a gene function annotation and a differential expression gene result; the growth conditions of the marine microalgae under different temperature conditions are analyzed according to cystic morphological cell density and hemolytic activity, and the regulatory gene influencing the hemolytic activity of the marine microalgae is obtained by combining gene function annotation and differential expression gene results. According to the method, the hemolytic activity of the marine microalgae cultured under different temperature conditions is extracted, so that the aim of researching related metabolic pathways possibly participating in toxin synthesis and hemolytic activity regulation is fulfilled.

High-value cyanobacteria ZYS and application thereof

Resumen de: CN121249525A

The invention relates to high-value cyanobacteria ZYS and application thereof. The algal strain is preserved in the China General Microbiological Culture Collection Center (CGMCC) on July 9, 2025, and the preservation number is CGMCC NO. 46458. The algal strain has excellent culture characteristics of high growth speed, high biomass, good salt tolerance, strong biological pollution resistance and easiness in settling and harvesting. An amplification culture experiment proves that the strain has remarkable large-scale culture potential, and a foundation is laid for industrial application. Besides, the algal strain is rich in phycocyanin and can be used for efficiently synthesizing a high-added-value compound GG (Glyceroglucoside), and the yield of the GG per unit volume can reach 98.35 mg/L/OD730 under the conventional culture condition. The algal strain disclosed by the invention integrates high yield, high stress resistance and high-value product synthesis capability, is remarkable in economic value, and provides a new excellent algal strain for microalgae resource development.

microalgae cultivation photoreactor for capturing carbon dioxide

Resumen de: KR20260000247A

본원발명은 이산화탄소 포집용 미세조류 배양을 위한 광배양기에 관한 것으로 배양관의 교체 및 세척이 용이하여 가정용 또는 실내 인테리어용으로 사용하기에 적합한 장점이 있다.

MARINE MICROALGAL PROTEIN PREPARATIONS

Resumen de: US20260000094A1

A protein preparation may be obtained from dried lipid extracted marine algae. The novel hydrolysate has high solubility and digestibility, low ash content, and high protein content (measured as g amino acid/g of product), with an essential amino acid profile that makes an excellent protein supplement for human consumption. The process utilizes a hydrolyzation reaction at high solids content to minimize water footprint and ash content, while increasing its solubility and digestibility.

PLATFORM FOR BIO-BASED PRODUCTION OF HIGH LEVELS OF O-PHOSPHOSERINE, CYSTEATE, OR TAURINE

Resumen de: US20260002180A1

Methods for the fermentative production of O-phosphoserine, cysteate, or taurine in microbes or unicellular organisms that contain a serB mutation that either decreases serB expression, reduces the amount of the serB gene product or results in a serB gene product with low enzymatic activity. Genetic modifications of the O-phosphoserine, cysteate, or taurine and/or substrate biosynthetic pathways in unicellular organisms that include bacteria, algae, microalgae, diatoms, yeast, or fungi are disclosed. Also disclosed are fermentation and processing methods for the production of various O-phosphoserine-, cysteate-, or taurine-containing products and the use of the cells, fermentation broth or extracts that contain O-phosphoserine, cysteate, or taurine to produce products for use in food, feed, beverages, dietary and health supplements, cosmetics, personal care, pharmaceuticals, agricultural production, or surfactants.

Method for preparing a rich liquid food supplement based on microalgae

Resumen de: MA66491A1

The invention describes a method for developing a liquid food supplement rich in proteins and amino acids, polyphenols and phycocyanin from microalgae. The method includes, as a main step, the enzymatic decomposition of cell walls to release their contents into the extract, without degradation or change in its composition. The compounds released include free proteins and amino acids, phenolic compounds and phycocyanin contained in the phycobilisome. The liquid product obtained by said method preserves high antioxidant activity and the characteristics of a food supplement “Rich in proteins” and/or “Rich in free amino acids” and/or “Rich in phycocyanin” and/or “Rich in polyphenols » and/or “Rich in antioxidants”.

Energy-saving illumination and temperature coordinated regulation and control device

Resumen de: CN223738047U

The utility model discloses an energy-saving illumination and temperature coordinated regulation and control device, and belongs to the field of microalgae cultivation. An energy-saving illumination and temperature coordinated regulation and control device comprises a supporting plate and further comprises a light guide pipe fixedly connected to the supporting plate, a diffuser is arranged at the bottom of the light guide pipe and arranged below the supporting plate, and a brightness sensing assembly is arranged in the light guide pipe; the connecting plate is fixedly connected to the bottom of the supporting plate, an illuminating lamp is connected to the connecting plate in a lifting mode, a temperature sensing assembly is arranged on the illuminating lamp, and when the light source in the light guide pipe is detected by the brightness sensing assembly, the temperature sensing assembly and the illuminating lamp ascend or descend; according to the utility model, the position height and the switch of the illuminating lamp can be controlled, and the illuminating lamp is matched with the light guide pipe for use, so that unnecessary power consumption can be reduced, and the energy efficiency is improved.

Method for purifying wastewater by using MgFe-LDH modified charcoal reinforced microalgae

Resumen de: CN121225767A

The invention relates to a wastewater purification method, in particular to a method for purifying wastewater by using MgFe-LDH modified biochar reinforced microalgae, which comprises the following steps: preparing MgFe-LDH modified biochar; co-culturing the modified biochar and microalgae, and determining the optimal addition amount of the MgFe-LDH modified biochar by comparing the growth condition of the microalgae; and inoculating the MgFe-LDH modified charcoal and microalgae into the wastewater for purification. Compared with the prior art, the method has the advantages that a CO2-rich microenvironment is created for the microalgae in the wastewater by constructing an algae-carbon co-culture system, the inherent limitation of insufficient carbon supply in a solution is improved, the growth of the microalgae in the wastewater is promoted, and the wastewater purification effect of the chlorella is further enhanced. The method is simple and convenient to operate, low in preparation cost, high in wastewater purification efficiency of microalgae and high in environment adaptability of an algae carbon system, and the purposes of fixing CO2 and efficiently purifying wastewater can be achieved.

Chlorella pyrenoidosa mutant strain APMT04 and application thereof

Resumen de: CN121227522A

The invention provides a yellow chlorella pyrenoidosa mutant strain APMT04 and an application of the yellow chlorella pyrenoidosa mutant strain. The chlorella pyrenoidosa mutant strain APMT04 is obtained through a chemical mutagenesis method, compared with an original strain, the chlorella pyrenoidosa mutant strain APMT04 has the advantages that the growth speed of chlorella cells under the heterotrophic condition is higher, and meanwhile, the chlorophyll content of the chlorella pyrenoidosa mutant strain APMT04 is reduced by 90% or above, but the chlorella pyrenoidosa mutant strain APMT04 contains high-content xanthophyll, so that the And the extract also contains high-content protein and grease, can be used as byproducts of xanthophyll extraction, and can be used in the fields of food, feed and the like. When the chlorella pyrenoidosa mutant strain APMT04 is used for producing xanthophyll, the later-stage extraction and preparation process of xanthophyll can be simplified, the sensory acceptance of algae powder is improved, protein and grease rich in the algae powder can serve as by-products of xanthophyll extraction, and high-quality germplasm resources are provided for industrial production and application of microalgae xanthophyll.

Chlamydomonas reinhardtii strain with high exosome yield

Resumen de: CN121227521A

The invention relates to the technical field of microalgae biology, in particular to a chlamydomonas reinhardtii strain with high yield of exosomes, which is named as Chlamydomonas reinhardtii YYAW026 and preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC NO.46629, the preservation date is November 10, 2025, and the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. Compared with an original strain, the chlamydomonas reinhardtii cell provided by the invention cannot form a complete cell wall structure, so that the exosome can be quickly secreted into a culture solution; although the cell structure of the strain is incomplete, the strain can still perform normal cell activity, the growth curve is basically consistent with that of a wild type, the yield of the exosome of the strain is greater than that of the wild type when the strain reaches a plateau phase, and the particle size distribution width of the exosome is more concentrated. The chlamydomonas reinhardtii disclosed by the invention has a relatively good application prospect in the basic research fields of cosmetics, medical beauty industry and algae source exosomes.

Aquaculture tail water treatment system and method based on shellfish appreciation and microorganism water purification

Resumen de: CN121220401A

The invention discloses a culture tail water treatment system and method based on shellfish appreciation and microorganism water purification, and belongs to the cross technical field of aquaculture and water environment governance, the system mainly comprises a microorganism treatment unit and a shellfish culture unit which are connected in sequence, the microorganism treatment unit is used for treating culture tail water through an immobilized biological membrane and segmented aeration, and the shellfish culture unit is used for treating culture tail water. The device can flexibly operate in a nitrogen control mode and a nitrogen removal mode; by means of the core regulation and control unit, the system operates in a nitrogen control mode in the shellfish growing period, the proper nitrogen and phosphorus concentration is maintained so as to nourish microalgae for shellfish to filter and eat, and rapid fattening of shellfish and removal of water particles are achieved; according to the method, tail water treatment is converted into a benefit growth point from a cost center, an endogenous circulation mode of purifying water with fish and culturing fish with water is formed, and unification of environmental benefits and economic benefits is achieved.

Ecological intensive mariculture tail water intelligent treatment system and method

Resumen de: CN121225799A

The invention belongs to the technical field of environmental engineering and pollution treatment, and particularly relates to an ecological intensive mariculture tail water intelligent treatment system and method.The ecological intensive mariculture tail water intelligent treatment system comprises a pretreatment and solid waste recycling module, a primary purification module, a biological collaborative purification module and a deep purification module; the pretreatment and solid waste recycling module comprises a high-density sedimentation tank, the primary purification module comprises a microalgae open pond, the biological collaborative purification module comprises a mixed culture area, and the deep purification module comprises an artificial wetland area. An outlet in the upper end of the microalgae open pond is connected with an inlet in the upper end of the mixed culture area through a pipeline I; according to the system, a biological treatment mode is adopted, the inherent defect of a single method in the prior art is overcome, standard discharge of mariculture tail water is achieved, green, ecological and efficient development of the breeding industry is promoted, and the win-win situation of ecological environment protection and economic benefit improvement is achieved.

System and process for preparing biogas through microalgae carbon sequestration and biogas purification

Resumen de: CN121227405A

The invention discloses a system and a process for preparing biogas through microalgae carbon sequestration and biogas purification. The system comprises a photosynthetic carbon sequestration biogas purification reactor module, a gas detection system, a deoxygenation module and a microalgae biomass collection module, the photosynthetic carbon sequestration biogas purification reactor module is a multi-stage closed photosynthetic bioreactor, and all stages of closed photosynthetic bioreactors are connected in sequence; marsh gas enters from a gas inlet of the first-stage closed photosynthetic bioreactor and sequentially passes through all stages of closed photosynthetic bioreactors for marsh gas purification, and gas at a gas outlet of the last-stage closed photosynthetic bioreactor enters a deoxidizing device for deoxidizing; and the gas which does not reach the purification standard of each stage of reactor flows back to the current stage of reactor for re-purification. The process provided by the invention is used for treating biogas generated by anaerobic digestion of organic wastes, introducing the biogas into a bioreactor, and absorbing CO2 by microalgae to realize gas purification.

Concrete-microalgae co-production system for carbon dioxide curing

Resumen de: CN121203785A

The invention belongs to the technical field of waste utilization devices, and particularly relates to a concrete-microalgae co-production system for carbon dioxide curing. The co-production system comprises a carbon dioxide trapping device, a microalgae culture device and calcining equipment; the microalgae culture device comprises a culture box, the bottom of the culture box is provided with an air inlet, a slag discharge port and an oil discharge port, and the top of the culture box is provided with an air outlet; a gas outlet of the carbon dioxide trapping device is communicated with a gas inlet of the incubator, and a slag discharging opening of the incubator is communicated with a feeding opening of the calcining equipment. According to the co-production system, the carbon dioxide trapping device, the microalgae culture device and the calcining equipment are connected for use, industrial waste gas is treated by the carbon dioxide trapping device, then carbon dioxide is introduced into the microalgae culture device, the carbon dioxide is efficiently fixed through photosynthesis of microalgae, and algae oil (biofuel) and algae residues are synchronously produced; and the algae residues are reused for cement clinker firing, so that a closed-loop industrial chain of carbon capture-biomass energy-building material regeneration is realized.

Accumulation method of cyanobacteria grease and high value-added metabolites under nitrogen starvation stress

Resumen de: CN121204176A

The invention relates to the technical field of preparation of blue-green algae biological resources, in particular to a method for accumulating blue-green algae grease and high-added-value metabolites under nitrogen starvation stress, which comprises the following steps: after carrying out plasma mutagenesis screening on blue-green algae, inoculating an improved BG-11 culture medium and activating to OD680 1.2-1.8; carrying out gradient switching of a nitrogen source according to an inoculum size of 10-15%, carrying out pre-culture for 4-6 days, and regularly supplementing vitamin C; carrying out flow monitoring on the nitrogen content of the cells, and carrying out mild and severe dynamic nitrogen starvation stress culture for 4-7 days; adding a nano-loaded composite inducer on the first day of severe stress, and performing pulse stirring culture for 2-3 days; after near-infrared monitoring reaches the standard, antioxidant is added for harvesting, and the biomass is subjected to freezing pretreatment. The high value-added metabolite is an ultraviolet absorbing substance (mycosporine-like amino acid and pseudocystin), phycocyanin or gamma-linolenic acid. According to the method, high-yield strains are screened through mutagenesis, gradient pre-culture and dynamic nitrogen starvation regulation are combined, and a nano-loaded composite inducer and real-time monitoring are matched, so that the grease and metabolite accumulation efficiency is directionally improved, and the ca

Method for promoting microalgae growth by using pharmaceutical product

Resumen de: CN121203932A

The invention belongs to the technical field of microalgae biology and culture, and particularly relates to a method for promoting microalgae growth by using a pharmaceutical product, which comprises the following steps: activating microalgae on a solid flat plate, inoculating the activated microalgae into a liquid culture medium, adding the pharmaceutical product at the initial stage of microalgae growth, placing in a constant-temperature shaking table, and carrying out illumination culture. According to the method, different types of pharmaceutical products with different concentrations are added into the microalgae, the influence of the addition of the different types of pharmaceutical products with different concentrations on the growth promotion of the microalgae is analyzed, the biomass of the chlorella can be rapidly increased, and the method has important significance on the large-scale production of the microalgae.

Composite material and method for accelerating diatom sedimentation

Resumen de: CN121203818A

The invention relates to the field of microalgae sedimentation, in particular to a composite material for accelerating diatom sedimentation and a method thereof. The composite material comprises chitosan and clay, wherein the mass ratio of the chitosan to the clay is (1: 5)-(1: 15). The sedimentation method comprises the following steps: adding the composite material into diatom liquid, culturing for a certain time, and collecting the diatom. By implementing the scheme, the recovery rate of the diatom is improved.

Novel sewage ecological treatment system and treatment method

Nº publicación: CN121202360A 26/12/2025

Solicitante:

MCC HUATIAN ENGINEERING & TECH CORPORATION
HUATIAN NANJING ENGINEERING & TECH CORPORATION MCC
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\u4E2D\u51B6\u534E\u5929\u5357\u4EAC\u5DE5\u7A0B\u6280\u672F\u6709\u9650\u516C\u53F8

Resumen de: CN121202360A

The invention discloses a novel sewage ecological treatment system and a treatment method. Comprising a biological membrane filter and a multi-medium ecological filter bed, wherein the biological membrane filter sequentially comprises a ventilation tower, a water inlet system, a biological contact oxidation zone, an air inlet and a water storage tank from top to bottom, and the air inlet and the parts above the air inlet are arranged above the ground; the multi-medium ecological filter bed is arranged corresponding to the water storage tank; the multi-medium ecological filter bed sequentially comprises a biological contact denitrification area, a sand filtration area, a special functional area and a microalgae and plant purification area from bottom to top; and the lower part of the water storage tank of the biological membrane filter distributes water to the biological contact denitrification area of the multi-medium ecological filter bed through a secondary water distribution pipe. The system disclosed by the invention can be used as a tail water advanced treatment facility of municipal and industrial sewage plants, and has the advantages of low energy consumption, low maintenance and operation cost, high sewage treatment efficiency, strong adaptive capacity and impact resistance and difficulty in blockage.