68results about How to "Maintain pH" patented technology

Non-amino organic acids such as succinic acid, malic acid and fumaric acid are produced by reacting bacterial cells or treated bacterial cells of a coryneform bacterium with an organic raw material in an aqueous medium containing magnesium carbonate and/or magnesium hydroxide, and a certain range of concentration of a monovalent cation, while maintaining the pH within a certain range without increasing the volume of the aqueous medium.

A method for producing hydrogen gas is provided comprising selecting a bacteria from the Order Thermotogales, subjecting the bacteria to a feedstock and to a suitable growth environment having an oxygen concentration below the oxygen concentration of water in equilibrium with air; and maintaining the environment at a predetermined pH and at a temperature of at least approximately 45° C. for a time sufficient to allow the bacteria to metabolize the feedstock.

An air-conditioning system of a substrate processing apparatus includes an air inlet line for providing air to a clean room. A contamination control apparatus for removing contaminants in the air is connected to the air inlet line. A controller controls temperature and humidity of the air without the contaminants. An air outlet line provides the air having the controlled temperature and humidity to a substrate processing chamber that is disposed in the clean room. The contamination control apparatus includes a spray unit having at least one nozzle that sprays water. At least one eliminator that traps the water for capturing contaminants in the air and drops the trapped water into a tank. A water circulation unit provides the water that includes an additive for controlling pH of the water to the spray unit.

The invention provides a compound microbial agent for urban sewage treatment. The compound microbial agent comprises a compound thallus which is compounded by bacillus subtilis, bacillus licheniformis, lactobacillus plantarum, hansenula polymorpha and saccharomyces cerevisiae. The compound microbial agent provided by the invention can be used for reasonably combining various strains capable of forming a dominant bacterial community, has a good degrading effect to macromolecules and degradation-resistant organic matters by being added into a sewage treatment system in a certain proportion, and can be used for effectively improving the biodegradability of sewage, reducing CODcr and BOD5 of urban sewage with poor biodegradability and purifying the water quality.

The invention relates to an iron tailing soil improvement agent and an iron tailing soil improvement method. The iron tailing soil improvement agent comprises biochar, rice husks, ceramsite, organic fertilizers, attapulgite powder and planting soil. A mass ratio of the biochar to the rice husks to the ceramsite to the organic fertilizers to the attapulgite powder to the planting soil is (0.5-3):(0.2-1):(0.5-1.5):(1-4):(1-2.5):(1.0-2.2). The iron tailing soil improvement agent and the iron tailing soil improvement method have the advantages that the particle size of soil can be improved by theaid of the iron tailing soil improvement agent, the loss rate of water in the soil can be eased, the water retention capacity can be enhanced, organic matters can be quickly and effectively supplemented, the content of organic matters in tailing can be effectively increased, and suitable environments can be provided for plant growth; the rice husks and the ceramsite are matched with one another, the porosity of iron tailing soil can be improved, the hardening degree of the soil can be lowered, the tailing soil can keep in excellent gas-permeable and soft states for a long term, accordingly, the iron tailing soil improvement agent and the iron tailing soil improvement method are favorable for respiration of animals and plants in the soil, and the survival rate can be increased.

The invention belongs to the technical field of fertilizers, and concretely discloses an environmentally-friendly fertilizer and a making method thereof. The making method of the environmentally-friendly fertilizer comprises the following steps: mixing an organic fertilizer, a charcoal fertilizer, a composite fertilizer, modified starch, a phosphate compound and a composite biological inoculant according to a certain mass fraction ratio, standing the obtained mixture, drying the mixture, granulating the dried mixture, and drying obtained granules, wherein the charcoal fertilizer is prepared from hickory shells, rice straws, rice husks, corn stalks and corncobs according to a certain weight ratio; and the composite bacterial inoculant is prepared by mixing ferment bacteria, Arthrobacter globiformils, Bacillus megaterium, Pseudomonas pseudoacaligenes, polysorbate and sodium dodecyl sulfate according to a certain weight ratio. The environmentally-friendly fertilizer prepared in the invention has the characteristics of comprehensive and balanced nutrition, high utilization rate, no pollution, effective increase of the output of crops, and effective absorption and degradation of heavy metals and organic pollutants from soil, so the absorption of pollutants by crops is reduced, thereby guaranteeing the health of human bodies.

The invention discloses a using method of a medicament used for chemically oxidizing and restoring pesticide contaminated soil. The medicament comprises a component A and a component B. The component A comprises sodium sulfate, and the component B comprises sodium dodecyl sulfate and calcium hydroxide. The method comprises the steps that 1, the adding ratio of the component A is calculated; 2, the using amount and matching ratio of the component B are calculated, and the component B is prepared; 3, soil is pretreated; 4, the component B is added into the contaminated soil, and the mixture is stirred and mixed to be uniform; 5, the component A is added into the soil into which the component B is added, and the mixture is stirred and mixed to be uniform; 6, the moisture content of the soil into which the component A and the component B are added is adjusted, and maintenance is carried out for 3-7 days; and 7, the soil pH is detected and analyzed in the maintenance period to ensure that the soil pH reaches 10.0 after the mixture is mixed to be uniform. By means of the using method of the medicament used for chemically oxidizing and restoring pesticide contaminated soil, pesticide matter difficult to degrade in soil can be rapidly and efficiently oxidized, decomposed and removed.

The invention discloses water-retaining slow-release fertilizer special for Chinese cabbages. The water-retaining slow-release fertilizer is prepared from rapeseed dregs, carbonized straw, peat, duck dung, pleurotus ostreatus residues , urea, diammonium phosphate, calcium superphosphate, potassium sulfate, potassium chloride, potassium nitrate, polyurethane, magnesium hydroxide, quicklime, trace elements, a water-retaining slow-release agent, bacillus subtilis, bacillus licheniformis, yttrium nitrate, rotenone, nano-tea polyphenols, nano-hydroquinone and citric acid. The water-retaining slow-release fertilizer special for the Chinese cabbages is reasonable in formula and good in water-retaining and slow-release effects, the growth of the Chinese cabbages can be promoted, and the quality of the Chinese cabbages is improved.

A water treatment system includes a circulation pump and an electrolytic chamber in fluid communication with a main body of water. Electrolytic plates within the electrolytic chamber generate chlorine. When mineral deposits foul the electrolytic plates, water is isolated within the electrolytic chamber and a minimal amount of a pH-reducing agent is added to the electrolytic chamber to remove the mineral deposits. In a first embodiment, the pH-reducing agent is admitted on a periodic timed basis. In a second embodiment, the pH-reducing agent is added when the pH of the main body of water falls below a predetermined threshold. In both embodiments, cleaning is accomplished by adding the pH-reducing agent when the circulation pump is not operating so that the acid dwells within the electrolytic chamber for a sufficient amount of time. Activation of the circulation pump causes the pH-reducing agent to enter the main body of water.

A novel particulate composite hydrotalcite which offers antacidic effect comparable to that of a particulate hydrotalcite so far used as a gastric antacid and, further, offers excellent stomach inner wall protection effect. A particulate composite hydrotalcite represented by the following formula (1),

(Mg_aZn_b)_1-xAl_x(OH)₂(Aⁿ⁻)_x/n·mH₂O  (1)

wherein Aⁿ⁻ is CO₃²⁻, SO₄²⁻ or Cl⁻, n is 1 or 2, and

x, a, b and m are values that satisfy the following conditions,

0.18≦x≦0.4, 0.5≦a<1, 0<b≦0.5, 0≦m≦1,

and a gastric antacid using the particulate composite hydrotalcite as an effective component. When used as a gastric antacid, the particulate composite hydrotalcite suppresses the occurrence of damage in the mucous membranes of stomach and intestines.

A fluid filter comprising a shell having an open end and an end plate closing the open end of the shell. The end plate has inlet openings and outlet openings therethrough. Disposed in the shell is a filter media. The filter media comprises an annular multi-layered member having at least two layers copleated together. The outer layer comprises a metal that sacrificially neutralizes the corrosive products in the fluid, and the inner layer comprises a cellulosic or synthetic material. The metal is preferably zinc. In use the fluid will enter the shell via the inlet openings, pass through the filter media and exit the shell from the outlet opening means. The zinc will neutralize the acidity of the oil caused 1) by the sulfur compounds that react with the moisture in the oil to form an acidic solution and 2) carbon particles resulting from incomplete combustion in the engine and thereby protect the engine and increase the life of the oil allowing for extended drain and oil change intervals.

The invention relates to a method for planting trees in chestnut soil. The method includes the steps: (1) performing distribution point sampling on soil in different places; (2) detecting pH (potential of hydrogen) values and soil organic matter contents of collected soil samples; and (3) performing improvement on the soil which is chestnut soil on distribution points, and planting trees in the improved soil. A physical and chemical combined method is adopted aiming at reasons affecting plant growth, pine needle soil with unique properties is used for increasing soil organic matters so as to improve fertility, meanwhile organic matters in the pine needle soil and acidity of the pine needle soil are utilized for acid-base neutralization, and a specific applying mode can be combined to enable neutralized potential of hydrogen to be maintained, so that the defect that high alkalinity of the soil cannot be changed effectively for a long time caused by soil characteristics when acid-base neutralization is performed purely is overcome, soil physical properties are achieved, the pH value of the soil is lowered, the propose for growth of trees resistant to saline and alkaline is achieved, and maximum benefits are gained by small investment.

A system for sensing and measuring water characteristics or an external factor and initiating controlling the water characteristics of the body of water which may be based on external factor where the controlling of the water characteristics can be achieved through dosing or nondosing of an inactive material through an active material or dosing both an active material and an inactive material in the body of water in response to measured levels of water characteristics to enable the water to be used for either internal or external use in controlling harmful organisms.

The invention discloses a hemp stem core repairing agent repairing method for heavy metal contaminated soil, and particularly relates to the technical field of contaminated soil remediation methods, the method specifically comprises the following steps: step 1, preparing a hemp stem core biochar-based soil repairing agent: collecting hemp stem cores, crushing the collected hemp stem cores, putting the hemp stem core into a crusher for crushing. The hemp stem core is used as a main raw material of the repairing agent, hemp stem core biochar is applied to improvement and treatment of polluted soil, the special hemp stem core biochar-based soil repairing agent applied to treatment of the polluted soil is formed, the problem of heavy metal pollution of the soil can be well solved, the hemp stem core is turned into wealth from waste, and the soil repairing agent is environmentally friendly. The treatment cost of the heavy metal contaminated soil is reduced, waste resources are reasonably utilized, the environment is protected, and the method conforms to the law of ecological sustainable development.

An additive for buffering a projectile trapping medium and spent projectiles trapped therein is a buffering compound formed as a low density foamed concrete block that will self-dispense via fragmentation or pulverization when subjected to incoming fire. The block combines at least one dry component selected from the group consisting of low solubility phosphate compounds, low solubility aluminum compounds, iron compounds, sulfate compounds, and calcium carbonate with a cementing material, water, and an aqueous based foam in substantially stoichiometric amounts. The aqueous based foam is added in a quantity sufficient to adjust the density of the resulting block to be non-buoyant without sinking in the projectile trapping medium. The additive may be employed in a projectile trapping medium to chemically stabilize the medium and environmentally stabilize projectiles trapped therein.

Disclosed is a phosphate-free aqueous acidic conversion coating comprising zinc sulfate and sulfuric acid. The conversion coating finds special use as a conversion coating to metal substrates prior to application of a cold forming lubricant or prior to application of a paint. The conversion coatings according to the present disclosure avoid the issues associated with phosphate containing conversion coatings but provide similar benefits to phosphate-based conversion coatings. Optional components of the conversion coating solutions include one or more of pH adjustment neutralizers, coating stabilizers, coating accelerators, coating refiners, etchants, paint adhesion promotors and mixtures thereof. In an additional option, manganese oxide can be used in place of zinc oxide.

The invention discloses a method for preparing a gingko, passion fruit and plum compound health drink. The method comprises the following steps: (1) screening ginkgo fruits; (2) preparing ginkgo pulp and carrying out inclusion and debittering; (3) preparing passion fruit and plum compound pulp; (4) mixing monoglyceride with sodium alginate, carrageenan and sucrose ester to prepare a compound stabilizer; (5) blending ginkgo kernel pulp, the passion fruit and plum compound pulp, xylitol, citric acid, natural tea polyphenol and corn plant ester in a ratio of 25:25:6:0.125:2:1.5:1 and adding the compound stabilizer; (6) carrying out secondary high-pressure homogenization treatment; (7) carrying out compound enzymatic hydrolysis; (8) carrying out treatment with a gelatin-tannin method; and (9) carrying out degassing and sterilization. The method has the following advantages: the drink has the peculiar flavor and nutrients of ginkgo and faint scents and nutrients of passion fruit and plum; various nutritional ingredients are easy to absorb by human bodies; the clarity can be more than 98%; and the drink is not easy to precipitate and layer even being stored for four months.

The invention relates to a biological preparation for repairing soil. The biological preparation comprises the following components in parts by weight: 1.5-5 parts of a microbial preparation, 15-25 parts of single-walled carbon nanotubes, 60-90 parts of vinegar lees, 10-30 parts of soybean meal powder, 10-20 parts of tea bran powder and 5-10 parts of animal bile, wherein the microbial preparationis prepared by mixing trichoderma, nitrogen-fixing bacteria, streptomyces, bacillus megaterium, bacillus subtilis, bacillus natto and bacillus laterosus according to a volume ratio of 4-8:6-10:3-5:2-5:2-4.5:5-9:5-10, and the bacterial activity of each bacterium is not lower than 10<9>/g. According to the invention, the biological preparation can effectively increase the nutritional ingredients andbeneficial flora of soil, and effectively reduce the pH value of soil and the harm of heavy metals.

The invention relates to a preparation method for a phosphate buffer solution with relatively low osmotic pressure. The preparation method comprises the following steps: firstly, adding water for injection into a liquid blending tank, and stirring; adding 0.003-0.005% of sodium dihydrogen phosphate, 0.025-0.030% of disodium hydrogen phosphate, 0.80-0.85% of sodium chloride while stirring is performed at a low rotation speed; closing a charging opening after addition, continuously stirring for 5-10 minutes, and after stirring is completed, and sterilizing and filtering the solution, so that the phosphate buffer solution with the relatively low osmotic pressure is obtained. The phosphate buffer solution prepared through the preparation method is sterile, and can be used as a solvent for drugs such as sodium hyaluronate injection, sodium hyaluronate gel and the like, which make a certain contribution to the osmotic pressure of solutions, so that adverse drug reactions caused by large osmotic pressure fluctuation can be greatly reduced and the product quality can be improved.

A preparing method of a ginkgo-milkvetch root-Chinese wolfberry composite healthcare beverage is disclosed. The preparing method includes following steps of: (1) screening ginkgo fruits; (2) preparing ginkgo slurry, complexing, and debitterizing; (3) preparing milkvetch root-Chinese wolfberry composite slurry; (4) mixing monoglyceride, sodium alginate, carrageenan and sucrose ester to obtain a composite stabilizing agent; (5) blending the ginkgo slurry, the milkvetch root-Chinese wolfberry composite slurry, xylitol, citric acid, natural tea polyphenol and corn plant ester powder according to a ratio of 25:25:6:0.125:2:1.5:1, and adding the composite stabilizing agent; (6) performing two times of high-pressure homogenization; (7) performing composite enzymatic hydrolysis; (8) treating by a gelatin-tannin method; and (9) degasing and sterilizing. The preparing method is advantageous in that: flavor and nutrients which are special to ginkgo are maintained, the beverage also have taste and nutrients of the milkvetch root and the Chinese wolfberry, various nutrients are prone to absorption by human bodies, the clarity can be higher than 98%, and the beverage is free of precipitation and layering after being stored for 4 months.

The invention discloses a composite electrolyte for preparing a corrosion-resistant surface of a petroleum pipeline and a preparation method of the corrosion-resistant layer of the petroleum pipelinethrough ultrasonic-assisted electrodeposition, and belongs to the technical field of electrolysis or electrophoresis processes. The electrolyte per liter is prepared from solute raw material components of 150-200 g of nickel sulfate, 50-80 g of nickel chloride, 30-60 g of sodium hydrogen phosphate, 0.1-0.2 g of sodium dodecyl sulfate, 6 g of nano silicon carbide, 10-30 g of sodium sulfate and 30-50 g of citric acid, and the solvent is deionized water. In an electrodeposition process, the nickel and phosphorus in the electrolyte are subjected to a reduction reaction on a stainless steel substrate as a negative electrode to be co-deposited on the stainless steel substrate to form a nickel-phosphorus alloy with an amorphous structure and a smooth surface, and therefore the corrosion resistance of the coating is improved; since the nano silicon carbide is inlaid in the nickel-phosphorus alloy, on the one hand, the nano silicon carbide forms a micro-nano double-roughness structure with thenickel-phosphorus alloy, and forms an air layer between the nano silicon carbide and water drops when making contact with the water drops, so that a hydrophobic structure is formed, and the corrosionresistance is improved; and on the other hand, the wear resistance of the coating is improved, and the service life of the coating is prolonged.

The invention relates to a recombinant humanized type I collagen gel scaffold for vaginal relaxation, as well as a preparation method and application of the recombinant humanized type I collagen gel scaffold for the vaginal relaxation. The gel scaffold comprises the following components in concentration by mass: 0.002 to 0.5% of recombinant humanized soluble high-activity type I collagen, 15 to 25% of poloxamer 407, 1 to 8% of poloxamer 188, 2 to 6% of glycerin, 0.5 to 2.5% of sodium hyaluronate, 0.02 to 2% of Nepal sodium methyl ester, 0.3 to 1% of phenoxy ethanol and the balance of deionized water. The recombinant humanized type I collagen gel scaffold for the vaginal relaxation disclosed by the invention has an obvious effect in significantly improving the vaginal relaxation, further can repair the problems of itching, scorching hot, chapping and the like caused by vaginal dryness, and further has the effects of increasing the vaginal elasticity, relieving pains during sexual intercourse, increasing the sexual satisfaction and vaginal secretions, reducing vaginal inflammatory responses, enhancing the vaginal micro environment moisture, improving the vaginal dryness and maintaining the vaginal micro environment pH. The combination is free of adverse stimulus allergic reactions and immune rejection, and can be used for being prepared into suppository dressings, gel dressings and lotions, and is worthy of being popularized clinically.

The invention discloses a toning lotion with moisturizing, anti-oxidation and skin-activating effects and a preparation method thereof. The toning lotion is prepared from the following components in percentage by mass: 4 to 10 percent of a moisturizing agent, 0.1 to 2 percent of an anti-allergy agent, 0.01 to 0.9 percent of a false leaf tree root extract, 0.2 to 2 percent of an antioxidant and 0.1 to 2 percent of a skin conditioner. The toning lotion provided by the invention has the effects of resisting oxidation, rejuvenating skin, preserving moisture, replenishing water and the like, can effectively keep the young state of the skin after being used for a long time, and can effectively keep the moisture content of the skin. The toning lotion can be easily absorbed by the skin. After the mask is used, the face is fresh and non-sticky, the property is stable, and the quality is controllable; the toning lotion is mild in property, can maintain the moisturizing feeling of the skin for a long time, and brings cool and comfortable feeling to the skin; the active ingredients penetrate into the skin to form a protective film on the surface of the skin, so that the damage to the skin is reduced, and multiple effects of moisturizing, moistening and the like are provided for the skin.