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112 results about "Increase ph" patented technology

Apparatus to establish and optimize sedimentation and methane fermentation in primary wastewater ponds

InactiveUS6923906B2Raise the pHIncreases the rate of die-away of pathogenic bacteriaLiquid degasificationMixing methodsSludgeIncrease ph
A method of disposing waste includes the step of forming a primary waste pond called an Advanced Facultative Pond (AFP). A stable microbiological methane fermentation zone is established within the AFP. The system constitutes a complete primary treatment of organic waste and wastewater that does not require daily sludge handling typically associated with organic waste treatment and disposal. The method of the invention converts organic compounds, including settleable solids, into methane. The invention controls sulfide odors from methane fermentation. The invention also provides a method of filtering raw wastewater through a bed of fermenting organic solids suspended by gas evolved in a fermentation zone. Hydrogen sulfide is oxidized in accordance with the invention. The technique of the invention biologically increases pH near the pond surface, thus retaining hydrogen sulfide in solution in the pond water. The biological increasing of the pH level near the pond surface increases the rate of die-away of pathogenic bacteria. The invention transforms proteins and other organic nitrogen compounds to nitrogen gas. The invention also transforms proteins and other organic nitrogen compounds to nitrogen gas; the invention detoxifies chlorinated hydrocarbons and volatile organic compounds; the invention captures and stores gases evolved from methane fermentation; the invention removes heavy metals, while establishing meromixis in fermentation cells or zones within primary wastewater ponds.
Owner:GREEN FRANKLIN BAILEY +2

Synergistic composition and method for odor control

A synergistic composition and method is provided for controlling odor from waste products. The composition comprises a combination of magnesium hydroxide and a sulfide-consuming compound. The method includes adding a sufficient amount of the composition to a waste stream to provide sufficient sulfide-consuming compound to effect immediate removal of sulfide. The composition incorporates a pH elevating and buffering compound, which both increases and buffers the pH. The increased pH serves to reduce both the volatile sulfide species and the volatile fatty acid (VFAs) species. The elevated pH also promotes the growth of naturally occurring bacteria which metabolize the sulfide to an innocuous form. Finally, addition of the composition drives the pH into a range where the growth of sulfide producing bacteria is inhibited. The mixture has surprisingly been found to be synergistic with respect to both control of chemical species that produce odors and corrosion of metals commonly found in sludge dewatering equipment.
Owner:SIEMENS WATER TECH CORP

Microstructured water having alkaline pH

A composition includes microstructured water having an increased pH compared to unstructured water. The composition may include dissolved oxygen. The dissolved oxygen may be present in an amount greater than 20 ppm. The microstructured water may have a cluster size of 6-8 molecules, and may have a cluster factor of about at least 30. The microstructured water may have a pH of at least 7.2 when using litmus paper and a pH of at least 8.4 when measured using a pH meter. The composition may include at least one member selected from the group consisting of vitamins, plant extracts, animal extracts, pharmaceutically active agents, flavorants and colorants.
Owner:BAGLEY DAVID

Xylanases, Nucleic Acids Encoding Them and Methods For Making and Using Them

The invention relates to enzymes having xylanase, mannanase and / or glucanase activity, e.g., catalyzing hydrolysis of internal β-1,4-xylosidic linkages or endo-β-1,4-glucanase linkages; and / or degrading a linear polysaccharide beta-1,4-xylan into xylose. Thus, the invention provides methods and processes for breaking down hemicellulose, which is a major component of the cell wall of plants, including methods and processes for hydrolyzing hemicelluloses in any plant or wood or wood product, wood waste, paper pulp, paper product or paper waste or byproduct. In addition, methods of designing new xylanases, mannanases and / or glucanases and methods of use thereof are also provided. The xylanases, mannanases and / or glucanases have increased activity and stability at increased pH and temperature.
Owner:BP CORP NORTH AMERICA INC

Magnetic filtration process, magnetic filtering material, and methods of forming magnetic filtering material

The present invention provides magnetically responsive activated carbon, and a method of forming magnetically responsive activated carbon. The method of forming magnetically responsive activated carbon typically includes providing activated carbon in a solution containing ions of ferrite forming elements, wherein at least one of the ferrite forming elements has an oxidation state of +3 and at least a second of the ferrite forming elements has an oxidation state of +2, and increasing pH of the solution to precipitate particles of ferrite that bond to the activated carbon, wherein the activated carbon having the ferrite particles bonded thereto have a positive magnetic susceptibility. The present invention also provides a method of filtering waste water using magnetic activated carbon.
Owner:UT BATTELLE LLC

Preparation method of high-capacity monocrystalline type ternary cathode material

A preparation method of a high-capacity monocrystalline type ternary cathode material comprises steps as follows: S1, a nickel cobalt manganese hydroxide precursor of a core-shell structure is prepared with a coprecipitation method, a loose and porous core is prepared by intermittently introducing a certain quantity of bicarbonate at the initial stage of core making, after core making ends, and loose flaky shells are prepared by substantially reducing the rotation speed and increasing pH; meanwhile, at the core-shell transition stage, a dispersant is added to effectively prevent agglomerationof the shells due to decrease of the rotation speed; S2, the prepared precursor and lithium salt are mixed and calcined once in the oxygen-rich atmosphere at the high temperature, and the monocrystalline type ternary cathode material is obtained. A battery is prepared from the ternary cathode material and has high capacity and good safety performance due to high lithium ion transport efficiency and reduced anisotropy in crystals. The problem of poor capacity of the material because of low lithium ion transport efficiency of monocrystalline type ternary materials is effectively solved. Besides,the monocrystalline type ternary cathode material is prepared through one-time sintering, the preparation procedure is simple, and the production cost is low.
Owner:南通金通储能动力新材料有限公司

Method for cleaning diamond wire-electrode cutting silicon wafer

The invention relates to the technical field of cutting silicon wafer post-treatment, and in particular relates to a method for cleaning a diamond wire-electrode cutting silicon wafer. The method comprises the following steps: coarsely cleaning a degummed silicon wafer in an alkaline cleaning agent and lactic acid respectively, wherein the pH of the alkaline cleaning agent is between 9 and 10, the temperature of the alkaline cleaning agent is between 30 and 50 DEG C, and the temperature of the lactic acid is 60 DEG C; and finely cleaning in the alkaline cleaning agent and purified water respectively, wherein the PH of the alkaline cleaning agent is between 9 and 10, and the temperature of the alkaline cleaning agent is between 70 and 90 DEG C. The cleaning method has the advantages that: the silicon wafer surface is cleaner and the surface damaged layer is better removed by increasing pH of the silicon wafer cleaning solution and increasing the temperature, and the cleaning solution plays a surface activation effect in the alkaline etching process of the silicon wafer. When the silicon wafer is etched, the pyramid etching surface has higher coverage rate, and the etching surface is uniform.
Owner:TRINA SOLAR CO LTD

Microcapsules for self-repairing of asphalt micro-damage and preparation method of microcapsules

The invention provides microcapsules for the self-repairing of asphalt micro-damage and a preparation method of the microcapsules and relates to the field of building materials. The core material of the microcapsules is an asphalt regenerating agent, and the wall material of the microcapsules is melamine-urea-formaldehyde resin. The preparation method includes: adding melamine, urea and formaldehyde into deionized water, stirring, and regulating pH until the solution is clear and transparent to obtain a prepolymer solution; adding sodium dodecyl sulfate into deionized water, stirring until thesodium dodecyl sulfate is dissolved completely, adding the regenerating agent, performing high-speed shearing and emulsification to obtain a core material emulsion; adding the prepolymer solution into the core material emulsion while stirring, heating at the same time, lowering pH, performing reaction for 4 hours, and increasing pH to end the reaction; allowing a microcapsule suspension to stand,cooling to room temperature, filtering, repeatedly washing with deionized water, and drying to obtain the microcapsules. The microcapsules and the preparation method have the advantages that the microcapsules prepared by an in-situ polymerization method is good in high-temperature stability and mechanical strength and capable of effectively enhancing the self-healing ability of asphalt.
Owner:TONGJI UNIV

Preparation method of supported catalyst for regenerating amine solution rich in carbon dioxide

The invention discloses a preparation method of a supported catalyst for regenerating an amine solution rich in carbon dioxide. The supported catalyst is obtained by loading a catalyst to a carrier. The carrier is gamma-Al2O3. The catalyst is a metal oxide-carrying sulfate radical-type solid superacid catalyst. The preparation method comprises (1) dissolving a metal salt in water, adding gamma-Al2O3 powder into the solution and carrying out mixing to obtain a mixed solution A, (2) increasing pH of the mixed solution A so that the metal salt is hydrolyzed to form precipitates, and aging the precipitates to obtain a mixed solution B, (3) carrying out solid-liquid separation on the mixed solution B, washing the separated solids, and then drying the solids to obtain a substance C, and (4) grinding the substance C to obtain powder, adding the powder into a solution containing sulfate radical ions, carrying out stirring and impregnating, separating the solids and washing, drying and calcining the solids to obtain the supported catalyst. The supported catalyst has excellent catalysis and desorption performances. The supported catalyst has catalytic performance superior to that of traditional catalysts such as H-ZSM-5 and gamma-Al2O3.
Owner:HUNAN UNIV

Method and apparatus to establish and optimize sedimentation and methane fermentation in primary wastewater ponds

InactiveUS6852225B1Raise the pHIncreases the rate of die-away of pathogenic bacteriaGas production bioreactorsWaste based fuelSludgeSulfide
A method of disposing waste includes the step of forming a primary waste pond called an Advanced Facultative Pond (AFP). A stable microbiological methane fermentation zone is established within the AFP. The system constitutes a complete primary treatment of organic waste and wastewater that does not require daily sludge handling typically associated with organic waste treatment and disposal The method of the invention converts organic compounds, including settleable solids, into methane. The invention controls sulfide odors from methane fermentation. The invention also provides a method of filtering raw wastewater through a bed of fermenting organic solids suspended by gas evolved in a fermentation zone. Hydrogen sulfide is oxidized in accordance with the invention. The technique of the invention biologically increases pH near the pond surface, thus retaining hydrogen sulfide in solution in the pond water. The biological increasing of the pH level near the pond surface increases the rate of die-away of pathogenic bacteria. The invention transforms proteins and other organic nitrogen compounds to nitrogen gas. The invention also transforms proteins and other organic nitrogen compounds to nitrogen gas; the invention detoxifies chlorinated hydrocarbons and volatile organic compounds; the invention captures and stores gases evolved from methane fermentation; the invention removes heavy metals, while establishing meromixis in fermentation cells or zones within primary wastewater ponds.
Owner:OSWALD GREEN HLDG LLC +2

Compound solidifier for mucky soil and application thereof

The invention discloses a compound solidifier for mucky soil, which includes, by weight, 46% of cement, 34% of slag, 15% of fly ash, and 5% of triethanolamine. In the invention, cement is used as a main solidifying material, the fly ash and the slag are used as alkaline activators, and the triethanolamine is used as a surfactant. The compound solidifier, on the basis of solidification mechanism, aims to increase pH value of soil body, promote procedure of hydration reaction of cement and setting and hardening of a hydrate, and enhance activity of ions participating in the reaction; by selecting the solidifying material and other components, the optimal solidification effect is achieved through a series of reactions. The invention also provides applications of the compound solidifier for mucky soil in solidification treatment of soft soil foundation. In practical engineering, addition amount of the compound solidifier is regulated so as to fit and solidify soft soil in different organic matter content and water content, thereby achieving best solidification and economic effect.
Owner:ZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD

Glucanases, nucleic acids encoding them and methods for making and using them

The invention relates to polypeptides having glucanase, e.g., endoglucanase, mannanase, xylanase activity or a combination of these activities, and polynucleotides encoding them. In one aspect, the glucanase activity is an endoglucanase activity (e.g., endo-1,4-beta-D-glucan 4-glucano hydrolase activity) and comprises hydrolysis of 1,4-beta-D-glycosidic linkages in cellulose, cellulose derivatives (e.g., carboxy methyl cellulose and hydroxy ethyl cellulose) lichenin, beta-1,4 bonds in mixed beta-1,3 glucans, such as cereal beta-D-glucans or xyloglucans and other plant material containing cellulosic parts. In addition, methods of designing new enzymes and methods of use thereof are also provided. In alternative aspects, the new glucanases e.g., endoglucanases, mannanases, xylanases have increased activity and stability at increased pH and temperature.
Owner:BP CORP NORTH AMERICA INC

Method for the Rejection of Boron from Seawater in a Reverse Osmosis System

Disclosed is an improved filtration system for rejecting boron from seawater. More specifically, the invention relates to a reverse osmosis (RO) system that effectively eliminates boron from seawater by increasing seawater pH prior to passage through the RO membrane. By increasing pH levels, boron removal is achieved while at the same time reducing scaling on the RO membrane.
Owner:DOOSAN HEAVY IND & CONSTR CO LTD

Method for reducing specific surface area BET (Brunauer Emmet Teller) of white carbon black prepared by using sulfuric acid precipitation method

The invention discloses a method for reducing the specific surface area BET (Brunauer Emmet Teller) of white carbon black prepared by using a sulfuric acid precipitation method. The method comprises the following steps of improving the mass concentration of sodium silicate for reaction, and / or increasing pH value during aging. Specifically, the specific surface area BET of the white carbon black prepared by adopting the sulfuric acid precipitation method can be reduced by improving the mass concentration of the sodium silicate to 20-35 percent and increasing the pH value during aging to 4-10. According to the method, not only can the specific surface area BET of the white carbon black be remarkably reduced, but also accurate control over the specific surface area BET of the white carbon black can be realized, and the requirements on the white carbon black with lower specific surface area in related fields are met. The method disclosed by the invention is simple to operate, easy to implement and suitable for large-scale industrial production.
Owner:WUXI HENGCHENG SILICON IND CO LTD

Oilseed processing

Crushed and de-fatted oilseed is extracted with water at neutral, mildly basic or mildly acidic pH; and is filtered. The filter media allows passage of small fragments of solid cell meat into the filtrate. The filtrate is treated with a base to increase pH to over pH 9, and solids are separated out. Protein is separated from other constituents of the liquid and concentrated, for example by heat-induced or isoelectric precipitation and / or ultrafiltration. The remaining liquid is rich in sugars. The process results in one or more protein products suited for human or animal food ingredients or for production of cosmetics, a sugar rich product suitable for fermentation or use as a feed ingredient, and a fiber-protein animal feed ingredient.
Owner:BUNGE GLOBAL INNOVATION LLC

Hybrid process using ion exchange resins in the selective recovery of nickel and cobalt from leaching effluents

The present invention is directed to a hybrid process using ion ex- change resins in the selective recovery of nickel and cobalt of leaching effluents that is comprised of the steps of processing (1 ) the laterite ore (M), which is then treated through leaching (2) (either atmospheric or under pressure), considering solutions from the solid-liquid separation step of existing plants already in operation (2) as well, in a way that the downstream process comprises an ion exchange hybrid circuit, wherein the first ion exchange step (3) with resins (Re) exhibits specific selectivity conditions for the removal of iron, aluminum and copper and an increased pH, and the second ion exchange step (4) allows the removal of nickel and cobalt.
Owner:VALE LIMITED

Method of Increasing pH of High-Density Brines

It has been discovered that carbonate powders and bicarbonate powders are useful to increase the pH and corrosion resistance of high-density brines, such as zinc bromide brines, without significantly reducing their densities. The carbonates and / or bicarbonates should be water-soluble and may be sodium, potassium, magnesium and / or ammonium carbonates and / or bicarbonates and the like. The carbonates and / or bicarbonates are easily added in powder or other finely divided solid form and are completely dissolved in the brine prior to pumping the brine into a subterranean formation.
Owner:BAKER HUGHES INC

Stabilization of biosolids using iron nanoparticles

This invention discloses a stabilized biosolids composition and a method for the stabilization of biosolids. It entails the use of a chemically and biologically reactive material, in the form of ultrafine iron particles. The nanometer-sized iron particles are capable of degrading odorous organosulfur compounds, transforming persistent and toxic organic pollutants such as PCBs and chlorinated pesticides, inhibiting the growth of pathogens by increasing pH and maintaining the increased pH of the stabilized biosolids, immobilizing toxic metal ions such as mercury and lead, and improving the overall quality of biosolids for land application and plant growth.
Owner:LEHIGH UNIVERSITY

Washing machine

A washing machine includes a washing tub, a water tub, a drive unit, a feed-water unit, a drain unit, a water softening unit, a pH increasing unit, a pH decreasing unit, and a control unit. The water softening unit is disposed between the feed-water unit and the water tub, and is filled with a weak acid cation exchange material having weak acidic cation exchange groups with a pH from 7.5 to 14 at point of zero charge. The pH increasing unit increases the pH of washing water, and the pH decreasing unit decreases the pH of the washing water. The control unit performs the following operations: controlling the pH increasing unit to increase the pH of the washing water while the washing water is being fed; introducing the washing water with the increased pH to the water softening unit to decrease the hardness of the washing water; introducing the washing water with the decreased hardness to the washing tub; controlling, after the washing water is fed, the pH decreasing unit to decrease the pH of the washing water to a value of 5.5 to 7.0; and introducing the washing water with the decreased pH to the water softening unit.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

System to produce sugar from plant materials

A process system that uses a reduced amount of lime or other base to clarify or purify juice obtained from plant material such as sugar cane, sugar beets, or sweet sorghum. Specifically, apparatus and methods to reduce volatile materials in juice providing a product that has an increased pH requiring the use of less lime or other base to achieve the desired pH values for clarification or purification.
Owner:ECOLAB USA INC
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