10 results about "Algae organisms" patented technology

The invention provides an hpRNA interference vector for laver and application of the hpRNA interference vector, and belongs to the technical field of genetic engineering and algae biology. According to the hpRNA interference vector, a binary vector pBI121 is used as a skeleton vector, a laver endogenous Actin promoter and a multiple cloning site segment are inserted, the multiple cloning sites allow target gene segments to be cloned in a forward and reverse repetition mode, the target gene segments are spaced by introns, and therefore an efficient hpRNA structure is formed after transcription, and the efficient hpRNA interference vector is obtained. The gene can be directly used for silencing important genes related to growth and development, metabolic regulation, stress response and the like in the laver. The invention further provides a construction method of the hpRNA interference vector and application of the hpRNA interference vector in silencing laver genes and provides a method for silencing laver gene expression, the gene silencing effect is remarkable, experimental results can be repeated, and a powerful tool is provided for molecular breeding and genetic improvement of laver.

A method and a culture medium for culturing and growing algae utilizing a flue gas and wastewater from a urea plant and / or an ammonia plant are disclosed. In some instances, cultured algae is combined with one or more solid fertilizers to produce bio-fertilizers.

An algae-based thermoplastic foam is provided having a protein-rich algae biomass selected from either microalgae, macroalgae or combinations thereof. The protein content is greater than or equal to 15% by weight of the algae biomass and the algae biomass is dried to a moister content of less than or equal to 15% by weight having an average particle size of up to 200 microns. The composition includes a resin configured to exhibit rheological properties suitable for blending with algae including a melting temperature less than 250° C. and a melt flow rate in excess of 0.01 g / 10 min. The foam includes a foaming ingredient selected from the group consisting of crosslinkers, compatibilizers, plasticizers, accelerants, catalysts, blowing agents, other ingredients, and combinations thereof.

The utility model relates to the technical field of bio-membrane reactors, in particular to a rotatable algae bio-membrane reactor which comprises a reaction tank, a rotating shaft and a driving motor, a rotating shaft is mounted in the middle of the upper part of the reaction tank through a bearing seat, and a driving motor connected with the rotating shaft is also mounted at one end of the upper part of the reaction tank; a turntable is mounted in the middle of the rotating shaft through a flat key, and the interior of the turntable is uniformly filled with a bacteria room; the cover plate is fixedly installed on the front end face of the rotating disc through screws. The lamp holder is fixed and stretches across the upper part of the reaction tank through bolts, and LED lamp beads are embedded into the inner wall of the lamp holder. Through the improvement on the structure, the device has the advantages of being good in algae microorganism attachment growth effect, having a light supplementing function, fully stabilizing the activity of algae, improving the sewage treatment effect, having practical performance and practical value and the like, so that the problems and defects in the prior art and equipment are effectively solved and overcome.

The invention discloses an efficient carbon capture method based on algae biological carbon sequestration and a reaction device, and relates to the field of algae carbon sequestration. Step 2, adding double carbon sources; step 3, carbon sequestration environment regulation; 4, dynamically adjusting the double carbon sources; step 5, harvesting and adjusting algae. According to the efficient carbon capture method and reaction device based on algae biological carbon sequestration, efficient and stable carbon dioxide sequestration is achieved through systematic integration of algae strain breeding, double-carbon-source supply, environment regulation and intelligent feedback.

The utility model discloses an efficient denitrification and dephosphorization device for mariculture wastewater. The efficient denitrification and dephosphorization device comprises a culture water tank, a drainage pipe, a valve, a coarse filtering tank, a filtering grating, a connecting water pump and a denitrification and dephosphorization assembly, according to the utility model, soluble nitrogen and phosphorus in a water body are converted into large-particle (20-800mu m) microorganisms and algae biomass by utilizing a biofloc technology, part of large-particle filter clusters are absorbed and utilized by filter-feeding animals, part of phosphate and nitrate in tail water are absorbed by utilizing plants and large algae, and finally, a physical filtering system is utilized to filter the tail water. The residual large-particle floccules are removed by the drum filter, and then the residual large-particle floccules are disinfected and purified by the protein separator and the ozone generator and then return to the high-density circulating aquaculture system, so that the expected removal rate of ammonia nitrogen and nitrite in tail water reaches 60% or above, and the daily water change amount of the high-density circulating aquaculture system with the nitrogen and phosphorus removal component is less than 2%.

The application discloses a 3D bioprinting bacteria-algae symbiotic engineering living material and a preparation method and application thereof. The method takes chlorella as a biological oxygen supply source, takes alkali-producing bacteria as phenol-degrading bacteria, takes sodium alginate and carboxymethyl cellulose as carriers, and respectively prepares bacterial bio-ink and algal bio-ink added with silicon dioxide, so as to build bacteria-algae symbiotic engineering living materials with stripe and layer configurations through a 3D bioprinting mechanism. The bacteria-algae symbiotic engineering living material realizes three-dimensional accurate arrangement and functional partition of bacteria and algae, and exhibits excellent degradation performance and photosynthetic performance under different phenol concentrations, and has application prospects in the biological degradation treatment of organic pollutants.

This invention discloses a channel surface structure for inhibiting algal growth, relating to the technical field of suppressing algal populations in water conveyance channels. It includes a channel surface protrusion unit structure for disturbing water flow, a drive mechanism for adjusting the angle of the protrusion units to improve the disturbance effect, and a tie rod mechanism connecting each protrusion unit to the drive mechanism. Multiple sets of protrusion units are spaced apart along the water flow direction on the channel slope, with each set of protrusion units parallel to each other. The drive mechanism drives two triangular plates in each protrusion unit to rotate synchronously around an axis in opposite directions via the tie rod mechanism, thereby adjusting the water flow pattern near the channel surface. This water flow disturbance causes algae with poor attachment stability to detach, reducing the algal population. This maintains the algal population on the channel surface without external human intervention, ensuring that the water in the water conveyance channel is not negatively affected by algae.

An algal biofilm harvesting method capable of reducing release of planktonic microalgae includes the following steps: S1: constructing an algal biofilm treatment system; S2: calculating a cutting area; S3: harvesting microalgae biomass; and S4: cyclic harvesting. By constructing an algal biofilm treatment system, a surface of an algal biofilm can be regularly cut to harvest microalgae biomass, thereby keeping activity of the biofilm in a best state all the time. In addition, the harvested microalgae biomass can be used as a high-quality substrate for subsequent fermentation, which can achieve resource saving. Quality attainment of effluent from a sewage tank with planktonic microalgae as a suspended solid indicator can be achieved, the treated effluent can be prevented from deteriorating due to an increase of the planktonic microalgae, and a risk that the planktonic microalgae in the effluent of the algal biofilm affects a subsequent treatment process is reduced.