11 results about "Acidophilic bacteria" patented technology

The application discloses a method for leaching waste lithium battery positive pole powder in a neutral environment by using common desulfurization vibrio, and belongs to the field of waste battery metal resource recycling and bio-metallurgical technology. The common desulfurization vibrio obtained through gradient domestication is inoculated into a modified culture medium, and then the bacterial liquid is activated to construct a bioleaching system, so that the valuable metals in waste NCM, NCA, LFP, LCO, LMO and other positive pole materials are bioleached. The common desulfurization vibrio is innovatively used as the leaching strain, and the dependence on acidophilic bacteria in traditional bioleaching is abandoned, so that the efficient dissolution and directional separation of valuable metals in various waste LIBs positive pole materials are realized under mild neutral conditions, and a new microbial technical scheme is provided for waste LIBs positive pole valuable metal recovery.

The application discloses application of a microbial composition in industrial hazardous waste treatment and belongs to the technical field of industrial hazardous waste treatment and comprises the following steps: S1, collecting industrial hazardous waste, obtaining hazardous waste materials after pretreatment of the industrial hazardous waste, and filling the hazardous waste materials in a fermentation tank; S2, adding a growth medium in a bioreactor, connecting domesticated bacterial liquid to the bioreactor for expansion culture, and obtaining fermentation materials of compound acidophilic bacteria; S3, adding a biosurfactant to the fermentation materials of the compound acidophilic bacteria, uniformly stirring, and obtaining cell membrane surface hydrophobic modified compound acidophilic bacteria; and S4, then adding an acidic pH buffer solution to obtain a to-be-treated material. The application can maintain the stability of the pH required by the acidophilic bacteria in the process of treating the industrial hazardous waste and improve the cell membrane surface hydrophobicity of the compound acidophilic bacteria.

The invention belongs to the field of solid waste treatment, and discloses a Fenton iron mud resource utilization method and system. The method comprises the following steps: feeding the Fenton iron sludge into the first bioreactor; under the anaerobic condition, the dissimilatory iron reducing bacteria produce electrons through metabolism of a carbon source, ferric iron is reduced into ferrous iron, meanwhile, the carbon source is subjected to hydrolysis and acidification, small-molecule organic acid, CO2 and H2 are generated, supernate containing ionic state Fe < 2 + > and the small-molecule organic acid is obtained and fed into a second bioreactor, an acid environment and a small-molecule carbon source are provided for iron reducing acidophilic bacteria, and the iron reducing acidophilic bacteria are obtained. Ferric iron is reduced into ferrous iron, and supernate containing ionic state Fe < 2 + > is obtained; and carrying out solid-liquid separation on the supernatant containing the ionic state Fe < 2 + > to obtain an acidic filtrate, and sending the acidic filtrate back to the Fenton reactor as a ferrous iron source. According to the method, excessive COD is not generated and flows back to the Fenton reactor, and Fe < 2 + > ion state recovery is realized without additionally adding acid.

The invention is applicable to the technical field of agricultural disease prevention and control, and provides a method for efficiently and nondestructively treating seeds carrying bacterial fruit blotch pathogenic bacteria and application, the method comprises the following steps: S1, treating the seeds carrying diseases by using low-temperature plasma; s2, performing molecular biological detection on the treated seeds; s3, sowing the treated seeds into a seedling raising tray for seedling raising; a dielectric barrier discharge (DBD) device is adopted in the low-temperature plasma treatment in the step S1. The low-temperature plasma treatment method has an obvious killing effect on watermelon acidophilic bacteria inside and outside the seeds, the seed treatment efficiency is improved, the purpose of preventing and controlling the melon bacterial fruit blotch is achieved, the risk of the diseases is effectively avoided, and huge economic losses caused by the fruit blotch of farmers and enterprises are reduced; the seed vigor can be enhanced, the bud vigor and bud rate of the watermelon seeds can be remarkably improved, the germination and growth period of the seeds can be shortened, the seedling emergence uniformity of the seeds can be improved, and the seedling commodity can be improved.

The invention discloses a method for leaching anode powder of a waste lithium battery in a neutral environment by utilizing common desulfurization vibrio, and belongs to the technical field of waste battery metal resource recovery treatment and biological metallurgy. The method comprises the following steps: inoculating common desulfurization vibrio obtained through gradient domestication into an improved culture medium, then activating a bacterial liquid, and constructing a biological leaching system, so that the biological leaching of valuable metals in waste NCM, NCA, LFP, LCO, LMO and other positive electrode materials is realized. According to the method, common desulfurization vibrio is creatively adopted as a leaching strain, the dependence of traditional biological leaching on acidophilic bacteria is abandoned, efficient dissolution and directional separation of valuable metals in various waste LIBs positive electrode materials are achieved under the mild neutral condition, and a brand-new microbial technical scheme is provided for waste LIBs positive electrode valuable metal recovery.

The invention relates to the technical field of agriculture, and discloses a microorganism-mineral based composite material as well as a preparation method and application thereof. The microorganism-mineral-based composite material comprises the following components: iron phosphate powder and dissimilatory iron reduction microorganisms, wherein the dissimilatory iron reducing microorganisms comprise at least one of shewanella, geobacter, desulfurization vibrio, clostridium butyricum, geoacidophilus and iron-rich bacteria. The microorganism-mineral-based composite material provided by the invention comprises the mineral component iron phosphate and dissimilatory iron reduction microorganisms, and the dissimilatory iron reduction microorganisms can actively reduce the iron phosphate which is originally stable in chemical property and insoluble into Fe (II) with relatively high solubility, so that the crystal structure of the iron phosphate is destroyed; the phosphate fertilizer can release free PO4 < 3-> which can be absorbed and utilized by plants, the effect of the mineral reduction dissolution process driven by microorganisms is far better than that of simple addition when minerals or microorganisms are independently used, and an efficient phosphorus activation mechanism is formed.

This invention provides a heat-resistant acidophilic bacteria proliferation inhibitor and a method for inhibiting heat-resistant acidophilic bacteria proliferation in drinks. This invention relates to, e.g., a heat-resistant acidophilic bacteria proliferation inhibitor containing an active ingredient constituted by a 3-hydroxybutyric acid or a salt thereof.

The invention relates to the technical field of descaling, and discloses a thermophilic acid-producing bacterium geothermal well anti-scaling and descaling composite agent and a preparation method thereof, the thermophilic acid-producing bacterium geothermal well anti-scaling and descaling composite agent comprises the following components: a thermophilic acid-producing bacterium agent, maleic anhydride grafted modified polyaspartic acid, organic phosphonate, a silicon dispersant, a corrosion inhibitor, a stabilizer, a temperature adaptive composite additive and deionized water; the composite agent disclosed by the invention not only has excellent comprehensive performance, but also has the advantages of environmental protection, practicability, long service life and the like, and the overall technical scheme is scientific and reasonable and high in practicability. Compared with an existing chemical agent, the microbial components are introduced, the dosage of the chemical agent is reduced, the environment-friendly effect is achieved, microbial metabolites can be naturally degraded, and secondary pollution cannot be caused; compared with an existing microbial agent, through component synergy, the problem of high-temperature inactivation of strains is solved, and the long-term effectiveness of the agent is improved.

The application of vanillin in promoting the leaching efficiency of acidophilic bacteria is disclosed. Through the experiments of different concentrations of vanillin on the physicochemical parameters of bioleaching, mineral adhesion and EPS production of acidophilic bacteria, it is proved that the addition of 10 mg / L vanillin is beneficial to the leaching of minerals; the addition of 50 mg / L vanillin promotes the mineral leaching and the growth of strains in long-term leaching (>9 days). This strategy of improving the iron and sulfur oxidation ability of acidophilic bacteria through a new type of signal molecule lays a theoretical foundation for improving the leaching efficiency of strains in the bioleaching industry, provides a new idea for solving the environmental pollution problems such as acid mine drainage, and has a broad development prospect.

The invention discloses a method and beverage for inhibiting propagation of actinobacillus acidotartrate by using inactivated lactic acid bacteria, and belongs to the technical field of food bacteriostasis. The preparation method comprises the following steps: inactivating lactic acid bacteria with activity to obtain inactivated lactic acid bacteria; cracking the inactivated lactic acid bacteria to obtain inactivated lactic acid bacteria lysate; the inactivated lactic acid bacteria lysate is added into a food system needing to inhibit the propagation of the acidobacillus acidotartrate, and the inactivated lactic acid bacteria lysate can significantly inhibit the growth and propagation of stubborn thermoacidophilic bacteria represented by the acidobacillus acidotartrate in the food system under mild conditions (without high temperature or chemical preservatives). The method disclosed by the invention not only avoids the damage of traditional high-temperature sterilization to the flavor and nutrition of the product, but also conforms to the development trend of'clean labels' and no chemical additives in the food industry, and provides a new solution for controlling microbial spoilage.

The present disclosure provides compositions, methods, and kits for detecting guaiacol-producing microorganisms, in particular, Thermophilic Acidophilic Bacteria (TAB) in foodstuff. In one example, a method comprises: (a) contacting a set of oligonucleotides with the sample, wherein the set of oligonucleotides comprising: a first collection of primers targeted for nucleic acids of a guaiacol-producing microorganism; and a second collection of primers targeted for nucleic acids of Alicyclobacillus acidolerreslris: (b) amplifying DNA in the sample with the said set of oligonucleotides under a multiplex polymerase chain reaction (PCR); and (c) determining the presence of PCR products of step (b), wherein the presence of a PCR product in the sample is indicative of contamination of the sample by both guaiacol- producing microorganism and Alicyclobacillus acidoterrestris.