157 results about "Algae biomass" patented technology

A method of fractionating biomass, by permeability conditioning biomass suspended in a pH adjusted solution of at least one water-based polar solvent to form a conditioned biomass, intimately contacting the pH adjusted solution with at least one non-polar solvent, partitioning to obtain an non-polar solvent solution and a polar biomass solution, and recovering cell and cell derived products from the non-polar solvent solution and polar biomass solution. Products recovered from the above method. A method of operating a renewable and sustainable plant for growing and processing algae.

The invention provides a device for separating a first entity and a second entity by flowing them downwardly in an inclined settling chamber. Each entity has its own outlet located at approximately the lowest end of the inclined settling chamber. The device may be used in industrial fields such as pharmaceutics, biologics, and biofuels, for the purposes of large-scale growth and separation of algae biomass, bacteria and yeast cultures; algae metabolite production; and cell separation, among others. The invention exhibits technical merits such as effective particle separation or concentration capacity, robust structure, easy operation, cost-effective manufacturability, disposability, and high productivity in e.g. perfusion photobioreactor systems.

The invention relates to systems and methods for regulating algal biomass in offshore waters near an oil and gas production platform. The systems of the invention encompasses a plurality of modules for managing nutrients, algae, and aquaculture, including enclosures for containing aquatic organisms, and various operating subsystems that are operably associated with surface and underwater structures of the platform. In one embodiment of the invention, aquatic organisms are cultured in eutrophic water to feed on algae, thereby reducing the algal biomass. In other embodiments, the diversity of algae in an algal bloom is modified and the productivity of oligotrophic water is increased.

The invention discloses a method for fast early warning against a water body water bloom risk. The method comprises a first step of constructing an alga biomass prediction model based on environment analysis results; a second step of adopting the alga biomass prediction model to obtain an alga biomass prediction value; a third step of determining an alga biomass water bloom risk threshold of advantageous algae; and a fourth step of comparing the alga biomass prediction value with the alga biomass water bloom risk threshold and judging whether water bloom early warning is sent out. The method is suitable for water environmental quality monitoring, is simple, convenient and rapid, can achieve fast early warning of the water bloom risk and can provide timely and effective technical support for water environment emergency management.

The invention provides a buoy for blue algae monitoring and blue algae water bloom early warning, which consists of a buoy carrier, an instrument cabin, a monitoring sensor aggregate, a communication antenna and a solar panel, wherein the buoy carrier supports the whole buoy to float on the water surface, the instrument cabin is fixed on the buoy carrier, the monitoring sensor aggregate is suspended right below the buoy carrier, the communication antenna is arranged on the top of the instrument cabin, the solar panel is arranged on the external surface of the instrument cabin, and a power supply, a control module, a signal receiving / transmitting module, a data recorder, a motor and a sensor position adjustor are arranged in the instrument cabin. The invention can be arranged in lakes, reservoirs or water head sites to monitor effective radiation light intensities, temperatures, dissolved oxygen amounts, blue algae amounts and total alga amounts at different positions and depths in the water bodies with the realization of data real-time transmission.

The invention discloses a method for predicting the water area where water bloom of blue algae occurs first next year in a large shallow lake, which is characterized by comprising: based on the area and characteristics of water, setting a monitoring point for sampling water and bottom sediment; characterizing the time and spatial distribution of blue algae by using pigment analysis; characterizing the activity of blue algae in all lake areas by using photosynthesis activity and esterase activity of cells; acquiring meteorological data of the lake areas, and determining an effective wind field; and building an ecological dynamic module to predict the area where the water bloom of blue algae occurs first next year. In the method disclosed by the invention, the biomass and growth activity of the blue algae and the effective wind field are regarded as the common triggering factors of the formation of water bloom, the growth and transport of the blue algae and the driving factors of the formation of the water bloom are analyzed to estimate the change law of the ecological pattern of overwintering and resurrection of blue algae, the formation of water bloom of blue algae is predicted from multiple angles, parameters are integrated by the module, and the prediction result is directly displayed in a blue algae biomass contour map mode according to a time sequence.

Systems and methods for the treatment of lipid-extracted algae biomass and recycling nutrients are provided. The lipid-extracted algae biomass is hydrolyzed prior to anaerobic digestion, and the products generated by anaerobic digestion are further processed to yield by-products that are of use either for external use or as process inputs to carry out specific steps within an integrated algal growth and anaerobic digestion process designed to minimize economic costs, required costly inputs while improving upon system capabilities.

Disclosed is a culture system for the production of algae biomass to obtain lipid, protein and carbohydrate. By integrating heterotrophic processes with a phototrophic process in parallel, this system provides year around production in colder climates. By integrating heterotrophic processes with a phototrophic process in series, this system creates a two-stage, separated mixed-trophic algal process that uses organic carbon and nutrients for the production of seed in the heterotrophic process, followed by release of cultured seed in large-scale phototrophic culture for cell biomass accumulation. Organic carbon source including waste materials can be used to feed the heterotrophic process. The production capacity ratio between the heterotrophic and the phototrophic processes can be adjusted according to season and according to the availability of related resources. The systems are used for producing and harvesting an algal biofuel feedstock as well as other potential high-value products. The sequence and approach enhances utilization of carbon and nutrient waste-streams, provides an effective method for controlling contamination, adds flexibility in regard to production and type of available products, and supplies greater economic viability due to maximized use of available growth surface areas.

The invention relates to biotechnology, in particular to methods and means of physical action on biological structures of photosynthesing microorganisms, phototrophic algae in particular. The invention can be used in pharmaceutical, cosmetic and foodstuff industries, as well as for obtaining biofuel from algae In the process of the method implementation radiation of cultivated solution of photosynthesizing microorganisms / phototrophical algae is carried out by the action of electromagnetic waves of mm range and low intensity. Stimulation of increasing photosynthesizing microorganisms / phototrophical algae biomass and biomass of their pigments (excretions) is obtained with industrial production as a result of the resonance effect which is caused by the interaction of electromagnetic wave and biological cell. Irradiation of cultivated solution of photosynthesizing microorganisms / phototrophical algae is performed by electromagnetic waves of mm range and low intensity at different phases of cultured biological objects development.

The invention relates to systems and methods for reducing algal biomass in eutrophic water, wherein organism that feed on algae are introduced into the eutrophic water and cultured in the eutrophic water, until the algal biomass is reduced or the organisms have reach desirable size. The body of eutrophic water can be restocked with juveniles after harvesting. The organisms can be fishes and / or shellfishes. The methods further comprising producing biofuel, specialty chemicals, nutraceuticals, food, and / or fish meal from the harvested fish.

Disclosed is a culture system for the production of algae biomass to obtain lipid, protein and carbohydrate. By integrating heterotrophic processes with a phototrophic process in parallel, this system provides year around production in colder climates. By integrating heterotrophic processes with a phototrophic process in series, this system creates a two-stage, separated mixed- trophic algal process that uses organic carbon and nutrients for the production of seed in the heterotrophic process, followed by release of cultured seed in large-scale phototrophic culture for cell biomass accumulation. Organic carbon source including waste materials can be used to feed the heterotrophic process. The production capacity ratio between the heterotrophic and the phototrophic processes can be adjusted according to season and according to the availability of related resources. The systems are used for producing and harvesting an algal biofuel feedstock as well as other potential high-value products. The sequence and approach enhances utilization of carbon and nutrient waste-streams, provides an effective method for controlling contamination, adds flexibility in regard to production and type of available products, and supplies greater economic viability due to maximized use of available growth surface areas.

A robust methodology is described herein for determining the algae biomass photoautotrophic yield (in gram of biomass synthesized per μmole of absorbed photons), which is useful for reliable biomass productivity estimates for selecting, comparing, and optimizing algae cultures for large-scale production. Another method is provided herein to increase dissolved inorganic carbon concentration and alleviate limitations common in aerated small-scale batches. This carbonate addition method allows for a more accurate determination of the algae culture photoautotrophic yield under small-scale experimental conditions. Also provided herein is a method for estimating a light spectrum-dependent scatter-corrected algae-specific absorption cross section, which permits the use of Beer's law to estimate the fraction of photons absorbed by a given algae culture. Determination of the algae photoautotrophic yield and absorption cross section enable a full photobioreactor parameterization and the resulting capacity to achieve highly controlled nutrients-supply conditions.

The invention discloses a lake eutrophication evaluation method based on water-body absorption coefficients. The lake eutrophication evaluation method includes the steps that the absorption coefficients of lake-water-body suspended particles and colored dissolved organic substances at a wave band of 400 nm are measured, and the sum of the absorption coefficients of the substances is calculated, and the water-body absorption coefficients at (440) of a lake water body at the wave band of 400 nm are obtained; after a relationship mode of the at (440) and lake comprehensive nutrition state coefficients TLI is established, the lake-nutrition-state classification standard based on the at (440) is determined according to the TLI coefficient range. Lake eutrophication is evaluated with the lake eutrophication evaluation method, measurement of fussy and nitrogen nutritive salt and measurement of alga biomass are not required, and rapid evaluation and type classification of lake eutrophication can be achieved in the mode that the absorption coefficients of the water body at 440 nm only need to be measured; operating is easy to carry out, the cost is low, and the method is easy to popularize, and the advantages of the lake eutrophication evaluation method are quite obvious; in addition, as the water-body absorption coefficients can be measured in an in-situ mode, the precondition can be provided for establishing a measurement method based on the in-situ lake eutrophication state index.

The invention discloses a submerged macrophytes restoring process guided by water conservation fishery. By stocking silver carp and bighead carp and reducing COD (chemical oxygen demand), TP (total phosphor), chlorophyll and other chemical indexes of the water body, the process effectively reduces the algae biomass in the water body, improves the water body transparency, and achieves the aim of preventing algal bloom and improving the water quality, so an excellent growing condition is provided for aquatic macrophytes (in particular, the submerged macrophytes); and by adding fish and other key organisms eating attaching organisms, which is a key link in a food chain, the attaching organisms growing vigorously on the surface of the submerged macrophytes can be removed in time, and the aim of restoring the submerged macrophytes can be achieved.

The invention relates to a method for preparing biological oil from algae biomass through a direct catalytic liquefaction method, which is a hydrothermal method with algae biomass as a raw material. The method comprises pretreatment, catalytic liquefaction and separation, wherein the pretreatment comprises the steps of: soaking dried and crushed algae in 0.05-0.15mol / L alkali liquor or acid liquor for not less than 20h, pouring the soaking liquid and a modified natural mordenite catalyst into a pressure kettle, catalytically liquefying for not less than half an hour under the condition of agitation in an oxygen free and hydrogen atmosphere at 200-400 DEG C under 3-16MPa, cooling, reducing the temperature, relieving the pressure, separating the solid and the liquid, and dehydrating the liquid under reduced pressure to obtain biological oil. The algae liquefaction rate of the invention is high and reaches more than 82%; the grade of the oil product is high, and the heat value can reachmore than 30 MJ / kg; a water phase system is adopted, so that the invention has the advantages of environmental protection, low preparation cost, relatively mild reaction conditions and good market application prospects, saves energy and is simple and convenient for operation and easy for realization of large-scale production.

The invention belongs to the technical field of environmental protection, and particularly relates to a preparation method of an algae biofilm and application thereof in sewage treatment. The preparation method specifically comprises the steps of carrier pretreating, algae culturing, algae domesticating and algae biofilm preparing. The preparation method of the algae biofilm has the advantages that the preparation cost is low, the raw materials are easy to obtain, and the algae biomass is easy to recycle; the prepared algae biofilm can achieve the efficient nitrogen and phosphorus removal effect in sewage treatment, achieves the purpose of general sewage treatment and not only can overcome the defects that in a suspended algae system, the algae density is low, the hydraulic retention time is long, algae and water are difficult to separate, too more suspended solids (SS) exist, the resource recycling rate is low but also has the advantages of reducing immobilization reagent cost, weakening the influences of immobilization reagents on the algae activity, reusing immobilization carriers and the like.

The invention discloses a method for restoring a mine matrix and greening by utilizing microalgae artificial biological crusts, which comprises the following steps of: A, in a mine reclamation area in which plants are difficult to grow, selecting sand, transporting the sand to a region to be repaired and paving the sand; B, planting grasses to carry out greening, i.e. selecting herbaceous plants growing in a mine to plant; C, carrying out shrub greening, i.e. using salix psammophila, artemisia songarica schrenk, caragana microphylla and astragalus adsurgens which grow in drought-resistant regions, selecting poplar, oleaster, pines and cypress which belong to arbor, and planting shrub such as salix psammophila; D, carrying out artificial crust treatment; E, carrying out watering maintenance; and F, checking the microalgae biological crusts, wherein the step D of carrying out artificial crust treatment comprises a step a of selecting an algae type, a step b of preparing algae culture solution and a step c of culturing algae; and the step c of algae culture comprises the following steps of: (1) primary culture, (2) secondary culture, (3) tertiary culture, (4) culture of a runway-type impeller stirring and circulating culturing pool, (5) biomass collection of the algae and (6) inoculation of the microalgae artificial biological crusts. The method is easy to implement and is convenient to operate; and an effective method is provided for mine restoration, ecological restoration and improvement on the ecological environment.

The invention provides a method for sowing fixed life-form seaweed seedlings on the sea surface. The method comprises the following steps: (1) selection and treatment of shellfish used as substrates of the seaweeds; (2) culture of seedlings of the seaweeds using the shellfish as the substrates; and (3) sowing: the shellfish is lamellibranchia shellfish. The method has the following advantages: the aim that the fixed life-form seaweeds adhere to the submarine rocks through the convenient way of sowing on the sea surface is achieved; the new species (protospecies) for studying propagation and cultivation of the algae in China are convenient to popularize and apply in the submarine algae field; the biomass of the algae in the submarine algae field is increased, the dominant species of the algae are obvious and are convenient to harvest, and the fixed substances of the algae, such as C, N, P and the like, are taken from the sea to the land, so the effect on solving the ecological problemslasts longer and the contributions of the seaweeds to the sea ecology are effective for a long term; the submarine geomorphy is not changed and the original sea ecology is not damaged; the cost is low and the investment is low; and the built submarine algae field can be harvested, the economic benefits are acquired by adding the fishery resources and industrialized popularization and application can be carried out.

Methods and systems for utilizing deep ocean water in the cultivation and harvesting of nutrients and CO2 for algae and other valuable aquaculture species for the production of algal biomass and the like. The systems of the present invention include a floating deep water harvesting barge, a containment device, and a storage or pumping device. The containment device may be a closed system, an open system, or a photo-bioreactor. The present invention is also directed to improved methods for drying algae biomass and further downstream applications and uses of the algae biomass.

A freshwater mussel purifying system in lake nutritive water body and its purification are disclosed. The purifying system consists of pile, float ball, nylon rope and mesh basket. It is characterized building lake pile freshwater mussel purifying system with corresponding time, determining optimum chlorophyll alpha and suspend unit elimination quantity from freshwater mussel, determining living things for freshwater mussel, building a freshwater mussel purifying system engineering in lake water source enriched water body, checking and managing regularly, maintaining complete of engineering structure, collecting mature freshwater mussel regularly, and supplementing young freshwater mussel in engineering area.

This invention relates to compositions comprising high lipid content algae and methods of making and utilizing the same. In particular, the invention relates to high lipid content algae biomass and algal lipid materials derived from the same, methods of making the same, as well as to biofuels (e.g., biodiesel) and dietary compositions (e.g., animal feeds) comprising or made from the same. Compositions and methods of the invention find use in a variety of applications including biofuel, dietary (e.g., human and animal nutrition), therapeutic as well as research applications.

The present invention is generally directed to a system for producing an algae biomass and wastewater that have reduced concentrations of contaminants. The algae and wastewater treated by the system of the present invention can be combined in a heterotrophic growth system in which the growth of the algae is increased due to the reduced concentration of contaminants. The algae grown in this manner also has a longer shelf life due to the lack of contaminants within the harvested algae.

Carbon dioxide that is collected as a by-product of hydrogen production from a steam methane reformer (SMR) is used as a feed stock for growth of algae biomass for various purposes, e.g. biofuel production, chemical intermediates, nutraceuticals or pharmaceuticals. This invention helps reduce emissions of carbon dioxide, a known greenhouse gas, and helps to optimize algae growth that is used for the production clean biofuel to reduce the dependence on petroleum and fossil fuels.

The present invention relates to methods and system configured to convert algal biomass into biofuels, alcohols, nutrients, biochar, chemical building block compounds, and / or other useful by-products. Exemplary methods include an integrated biochemical and thermochemical process that provides high purity biofuels and mixed alcohols, while minimizing waste and / or maximizing efficiency.

A self-contained system which promotes the multiplication of algae from either salt water or fresh water sources as a feedstock. This process inspires a direct output of lipids for bio-diesel fuel as well as a significant raw algae yield which can be further processed into additional bio-fuel as well as other valuable resources. In addition to inspiring a direct output of algal lipids for bio-diesel, the system generates massive raw algae biomass output that can be directly utilized as an agent for efficiently cleaning up oil spills.

The invention discloses a measuring method for the algae biomass in a biological soil crust, and relates to the field of biology. The method includes the steps of sampling of an algae crust sample, sieving, cleaning, algae cultivating, chlorophyll a and chlorophyll b measuring, standard curve drawing and algae biomass measuring (natural development). In the algae cultivating step, cultivating is carried out through BG11 cultivating media, and use algae are mixed algae. In the chlorophyll a and chlorophyll b measuring step, chlorophyll is extracted with a mixed solution method, wherein extracting solutions comprise absolute ethyl alcohol, acetone and water in the ratio of 4.5 to 4.5 to 1. The relationship between the gross of the chlorophyll a and the chlorophyll b of the algae and the algae biomass is regressed through a standard curve. Measuring of the natural developing algae biomass is converted through the standard curve between the gross of the chlorophyll a and the chlorophyll b and the cultivated algae biomass. Direct comparison between the algae crust and the vascular plant biomass is achieved, and a reliable approach is provided for more accurately calculating the productivity of the algae crust and the effect of the productivity in an ecological system.

The present disclosure describes a process for using saline water, and saline reject water produced in water purification, to use for gold mining production, and growing and harvesting algae. The disclosure also describes a method for growing and harvesting algae utilizing saline water as growth medium for recycling waste water to extract the remaining metals out of waste water. The harvested algae may be used in various applications including but not limited to water purification for gold mining production and to extract metals out of remaining waste water.

The invention belongs to the field of biomass utilization and discloses a method for controlling nitrogen emission in a process of preparing liquid oil from algae. The method comprises the following steps: S1: grinding and drying algae biomass and lignocellulose biomass; S2: putting the lignocellulose biomass in the step S1 into a fixed bed reactor and carrying out a pyrolytic reaction to obtain abiomass carbon additive; S3: mixing the algae biomass and the lignocellulose biomass in the step S1, and pyrolyzing the mixture to obtain a pyrolytic carbon solid and pyrolytic volatile components; S3: enabling a part of the nitrogen-containing substances in the pyrolytic volatile components to fully react with the biomass carbon additive obtained in the step S2, so as to fix a part of the nitrogen in the biomass carbon additive and achieve an aim of reducing nitrogen emission. According to the method provided by the invention, the nitrogen emission is effectively reduced, and the nitrogen can be converted into a nitrogen-doped carbon material with a high added value, thereby facilitating green utilization of the algae biomass.