1174 results about "Sodium persulfate" patented technology

The invention relates to a stable curing agent of repairing heavy metal and toxic organic matter combined polluted soil. The stable curing agent comprises the following raw materials in percentage by weight: 10-30% of cement, 10-30% of coal ash, 20-50% of clays, 2-10% of an activating agent and 2-20% of an oxidizing agent, wherein the activating agent is a composition of one or more than two of magnesium oxide, aluminum oxide, titanium dioxide or molybdenum trioxide, and the oxidizing agent is a composition of one or more than two of sodium persulfate, calcium peroxide, potassium persulfate and ammonium persulfate. The raw materials are put into a grinder to be uniformly grinded and mixed to prepare the stable curing agent with the specific surface area of 400-800/kg. The stable curing agent provided by the invention has the characteristics of low cost, good soil repairing effect and simplicity in construction.

A method of producing electrodes for electrolytic capacitors by etching metal foil in a low pH etching electrolyte is disclosed. The low pH electrolyte is an aqueous solution, which comprises hydrochloric acid, glycerol, sodium perchlorate or perchloric acid, sodium persulfate and titanium (111) chloride. Anode foils etched according to the method of the invention maintain high capacitance gains, electrical porosity and strength. The electrical porosity of the etched foils is sufficiently high such that the overall Equivalent Series Resistance (ESR) is not increased in multilayer anodes configurations. Also described is a low pH electrolyte bath composition. Anode foils etched according to the present invention and electrolytic capacitors incorporating the etched anode foils are also disclosed.

The invention relates to an oxidant and a method for remedying organic contaminated soil/underground water, belonging to the field of soil environment remediation. The oxidant comprises sodium persulfate, ferrous sulfate and hydrogen peroxide. The remedying method comprises the following steps: measuring the contents of organic contaminations in the contaminated soil/underground water; putting the contaminated soil/underground water in a closed container; adding the ferrous sulfate or a ferrous sulfate complex till the concentration of ferrous ions is 20-200mg/L; adding a sodium persulfate solution till the concentration of sodium persulfate is 5-50g/L; adding hydrogen peroxide containing 30 volume percent of an activator 2 by controlling the addition amount to be 2-20 percent; and adding an appropriate amount of deionzed water, uniformly mixing, and then reacting for 6-48 hours. The ferrous sulfate and the hydrogen peroxide of the oxidant are wide in sources, is low in cost and is easily obtained; compared with sodium persulfate activated singly by the hydrogen peroxide, the consumption amount of the oxidant disclosed by the invention is reduced, and the remediation safety is relatively good; the ferrous sulfate and the hydrogen peroxide are jointly used as the activator, and the oxidation effect of the oxidant disclosed by the invention is better than that of sodium persulfate activated by a single activator, and the application contamination range is relatively wide.

The nickel hydroxide particles for a nickel hydroxide electrode may be treated using an alkaline solution of a strong oxidizing agent such as sodium or potassium persulfate to modify the surface nickel hydroxide structure. The resulting modified surface structure has been found to impart various benefits to electrodes formed from the nickel hydroxide. It is believed that the oxidation of cobalt compounds at the surface of the nickel hydroxide particles results in a highly conductive cobalt compound that plays an important role in the high reliability, high stability and high capacity utilization of nickel electrodes as described herein.

The invention relates to a charcoal loading nanometer zero-valent iron activated sodium persulfate system and preparation and application thereof. Firstly, biomass is burned into charcoal, the charcoal is cleaned and dried after being acidized, and added into a ferrous sulphate solution taking absolute ethyl alcohol and water as a dispersing agent for being stirred fully, then a sodium borohydridesolution is added dropwise to generate the charcoal loading nanometer zero-valent iron; lastly, a composite material prepared with pure water and ethyl alcohol is washed and dried, the obtained charcoal loading nanometer zero-valent iron activated material is placed in the solution, after ultrasonic treatment is carried out, the material is uniformly dispersed in the solution, at the moment, a sodium persulfate solution is added, the mixture is mixed evenly to obtain the charcoal loading nanometer zero-valent iron activated sodium persulfate system. The oxidation system is used for reducing waste, polluted surface water and target pollutants in the underground water, and the problems of the agglomeration and lower activity of sodium persulfate during the use of the nanometer zero-valent iron are solved.

The invention discloses stain-resistant and oil-resistant wallpaper. The stain-resistant and oil-resistant wallpaper comprises a substrate layer, a stain-resistant layer and an oil-resistant layer, wherein the outer periphery of the substrate layer is coated with the stain-resistant layer, and the outer periphery, far away from the substrate layer, of the stain-resistant layer is coated with the oil-resistant layer; the oil-resistant layer is prepared from the raw materials: acrylic perfluoroalkyl ester, alkyd resin, polyester resin, perfluoroalkyl acrylate, butyl acrylate, hydroxyethyl acrylate, aluminum tripolyphosphate, nano zinc borate, potassium persulfate, hydroxymethyl cellulose, nano zinc oxide, nano titanium dioxide, diatomite, magnesium hydroxide, aluminum oxide, organobentonite, sericite powder, perfluorocarbon, ferric phosphate, sodium molybdate, sodium persulfate, chlorinated paraffin, silane coupling agent KH-560, dibutyltin dilaurate, octadecyl trimethyl ammonium chloride, polyethylene glycol, fluorosilicon oil, a thickener, an antifoamer, a curing agent and modifying auxiliaries. The invention further provides a preparation method of the stain-resistant and oil-resistant wallpaper. The prepared wallpaper has excellent stain resistance and oil resistance.

The invention relates to a preparing method ofa nano-magnetic polymer composite microsphere, which comprises the following steps: preparing a hydrophilic Fe3O4 magnetic liquid particle by using a chemical co-precipitation method; dissolving initiating agents and emulsifying agents by weight part into ionized water to prepare water phase, adding the hydrophilic Fe3O4 magnetic liquid particle and adding a monomer to obtain nano-magnetic seed emulsion through polymerization; dissolving initiating agents by weight part into ionized water, adding the nano-magnetic seed emulsion and then adding a monomer to obtain nano-magnetic polymer composite microsphere emulsion through polymerization; the emulsifying agents are sodium lauryl sulfate, sodium dodecyl sulfate or sodium dodecyl benzene sulfonate; the initiating agents are potassium peroxydisulfate, ammonium persulphate or sodium peroxydisulfate; the initiating agents are potassium peroxydisulfate, ammonium persulphate or sodium peroxydisulfate; the hydrophobic monomer is styrene or methyl methacrylate or a mixture of the styrene and the methyl methacrylate; the nano-magnetic polymer composite microspheres prepared by adopting a seed emulsion polymerization method have the superparamagnetism, have stronger magnetic responsiveness, have no uncoated magnetic particle and contain magnetic polymer microspheres and are narrow to distribute.

The invention relates to a petroleum-hydrocarbon-contaminated soil repairing medicament and a use method and belongs to the technical field of soil environment repairing. The medicament is composed of sodium persulfate (Na2S2O8), zero-valent iron (Fe <0>) and calcium peroxide (CaO2), and the molar ratio of the Na2S2O8 to Fe <0> to CaO2 is 5: 2: 2. The Na2S2O8 is fed into a slurry system, the Fe <0> and the CaO2 are added for interphase activation, two types of free radicals with extremely high oxidability including a sulfate radical anion and a hydroxyl radical (.OH) can be obtained simultaneously for decomposing petroleum hydrocarbon in soil, wherein the formula of the sulfate radical anion can be found in the specification. According to use parameters of the repairing medicament, the feeding amounts of the sodium persulfate, the zero-valent iron and the calcium peroxide are 2 mmol/g, 0.8 mmol/g and 0.8mmol/g of soil correspondingly; the water soil ratio (milliliter: g) is 2.5: 1; a reaction is performed for 4-8 hours after the water and soil are uniformly mixed; and the water can be used repeatedly. Compared with a traditional chemical method, the range of acted organic pollutants is wider; the Fe <0> and the CaO2 are wide in resource, easy to obtain and low in cost; the two types of activating agents including the CaO2 and the Fe <0> are fed, the activating effect is better, and secondary pollution is avoided; and the reaction is mild, and safety is high.

The invention provides water-soluble poly(3,4-ethylenedioxythiophene) and a preparation method for a conductive coating thereof. The method comprises the following steps of: adding 3,4-ethylenedioxythiophene and an oxidant into the aqueous solution of the copolymer of sodium styrene sulfonate and an allyl monomer, regulating a pH value to be 1 to 5 by using a sulfuric acid, and polymerizing the mixture at the room temperature for 16 to 72h to obtain the water-soluble poly(3,4-ethylenedioxythiophene), wherein the oxidant may be ammonium persulfate, potassium persulfate or sodium persulfate; and the allyl monomer may be an acrylic monomer, a methacrylates monomer, hydroxyethyl acrylate , hydroxyethyl methacrylate, polyethylene glycol methacrylate or styrene. The electrical conductivity of the prepared water-soluble poly(3,4-ethylenedioxythiophene) is higher than that of the poly(3,4-ethylenedioxythiophene) generally using a polystyrene sulfonate acid as a dopant. The conductive coating is obtained by mixing the prepared water-soluble poly(3,4-ethylenedioxythiophene) and other water-based emulsion coatings or water-soluble polymers, and has the characteristics of high transparency and high electrical conductivity.

The invention discloses a preparation method for a printed circuit board. The method comprises the steps of: plating a matte copper or bright copper layer on the copper layer of a graphic line; and plating a nickel sulfate layer or nickel aminosulfonate layer on the matter or bright copper layer of the graphic line. The plating of the matte copper or bright copper layer on the copper layer of the graphic line includes: a. conducting treatment by a 8-10% acidic degreasing agent at room temperature for 5-7min, and carrying out two-stage overflow washing; b. performing micro-etching treatment by 80-100g/L ammonium persulfate or sodium persulfate and 3-5%sulfuric acid at room temperature for 40s, and carrying out two-stage overflow washing. Compared with other making processes, the preparation method for the printed circuit board provided by the invention has a shortest technological process and a minimum wastewater discharge amount. In short, no matter from the aspect of making cost or the aspect of quality, the method provided by the invention is a good choice and has sound advantages.

The invention provides an organic pollution soil restoration method which comprises the following steps: (1)putting to-be-treated soil in a crusher for crushing and then sieving the soil; (2) preheating the crushed and sieved soil in a heat exchanger, and then carrying out thermal desorption on the soil, wherein the temperature of the thermal desorption is controlled to be 450-550 DEG C; (3) cooling the soil to the room temperature, adding water in the soil to enable the water content of the soil to be 10-20%; (4) adding aqueous surfactant solution in the soil obtained in the step (3), uniformly stirring the soil, and conserving the soil for 3-5 days in a sealing manner; and (5) adding an oxidizing agent in the soil obtained in the step (4), uniformly stirring the soil, and conserving the soil for 3-5 days in a sealing manner, wherein the oxidizing agent is a mixture of hydrogen peroxide, sodium persulfate, ferrous sulfate and citric acid. According to the invention, the thermal desorption method and the chemical oxidation method are combined to improve the treatment effect.

The present invention discloses a sea sand desalination treatment technique. The treatment technique comprises the steps of a) immersing sea sand into a dechlorinating agent to perform dechlorination of the sea sand; b) separating the sea sand from the dechlorinating agent solution; and c) heating the dechlorinated sea sand. Besides, the present invention further discloses a sea sand desalination system. According to the present invention, ozonated water or a sodium persulfate acidic solution is used to perform dechlorination on the sea sand, wherein a chemical reaction occurs in the dechlorination process and chloride ions turn to chlorine gas; the sea sand is separated from the dechlorinating agent solution; and the chlorine gas remained on the surface of the sea sand is vaporized after heating, thereby preventing the chlorine gas from causing damage to the human body in the process of sea sand utilization and meanwhile achieving a dechlorination effect. The present invention can achieve the dechlorination effect simply by using the ozonated water or the sodium persulfate acidic solution, and compared with the effect and cost of dechlorination by rinsing with fresh water, the effect of desalination by using the dechlorinating agent is better and the cost of desalination is lower.

In a first aspect a slurry is provided for chemically mechanically polishing alumina and nickel iron to a common plane and in a second aspect a slurry is provided for additionally chemically mechanically polishing copper to a common plane. The slurry includes a first concentration of colloidal silica, a second concentration of potassium and/or sodium persulfate and a third concentration of ammonium persulfate. In the first aspect the first and second concentrations are tailored to chemically mechanically polish the alumina and the nickel iron at the same rate to a common plane and in the second aspect the slurry includes a third concentration of ammonium persulfate at a proper ratio to the potassium or sodium persulfate to chemically mechanically polish the copper at the same rate as the other materials to the same plane.

Tipping paper is prepared from the following raw materials in parts by weight: 60-70 parts of softwood pulp, 100-120 parts of hardwood pulp, 2-3 parts of trimethoxy(methyl)silane, 3-4 parts of triethoxyvinylsilane, 1-2 parts of sodium metasilicate, 1-2 parts of ethanol, 2-3 parts of polyvinyl acetate emulsion, 1-2 parts of sodium carbonate, 1-2 parts of an anti-oxidation agent 168, 3-4 parts of meerschaum powder, 2-3 parts of vermiculite powder, 1-2 parts of sodium tripolyphosphate, 1-2 parts of sodium carboxymethylcellulose, 1-2 parts of sodium persulfate and 1-2 parts of grape seed oil. The technological effects comprise that by adding the anti-oxidation agent into the raw materials, the tipping paper is increased in yellowing resistance, and also is substantially prolonged in storage time; and also, by adding ester materials into the raw materials and through cross-linking polymerization, the toughness and the flexibility of the tipping paper are increased, also the tipping paper is improved in water resistance and wet resistance, and a paper sheet has good lip sticking resistance.

The invention discloses a gas phase oxidization-liquid phase oxidization-absorption three-section type dry-wet-process flue gas denitration process. According to the process, ozone is used as a gas-phase oxidant to oxidize one part of nitric oxide in flue gas into high-valence-state nitric oxide capable of being absorbed by slurry; any one or a mixture solution of more of hydrogen peroxide, sodium hypochlorite, sodium chlorite, sodium chlorate, sodium persulfate, potassium chlorate, potassium hypermanganate and potassium dichromate is sprayed to be used as a liquid-phase oxidant to oxidize the residual high-valence-state nitric oxide in the flue gas into the high-valence-state nitric oxide; and the flue gas enters an absorption tower and a magnesium hydroxide solution is sprayed to absorb the high-valence-state nitric oxide. Compared with the prior art, the process firstly adopts two times of oxidization of a gas phase and a liquid phase and a magnesium oxide wet process is used for absorbing so that a target of efficiently removing the nitric oxide is realized; and by virtue of the technical scheme, the use amount of the ozone is reduced, the equipment cost and operation cost are reduced and the denitration efficiency is improved and can reach more than or equal to 93%.

The invention relates to a high-strength aerated concrete block and a preparation method thereof. The high-strength aerated concrete block is prepared by the following raw materials by weight: 25-30 parts of cement, 10-15 parts of quicklime, 12-15 parts of gypsum, 0.15-0.2 part of aluminum powder, 10-15 parts of propylene glycol, 3-5 parts of a polycarboxylate water reducing agent, 12-15 parts of saw dust,5-8 parts of oil residues, 3-5 parts of branch powder, 5-8 parts of clay, 3-5 parts of sodium persulfate, 30-35 parts of gravels and 4-6 parts of 3-aminopropyl trimethoxysilane. Cement consumption in the high-strength aerated concrete block is relatively large, and the polycarboxylate water reducing agent and the gravels are added, so that compressive strength of the block is obviously enhanced, thereby meeting actual production requirements.

The invention discloses an in-situ combined remediation method for petroleum contaminated site soil and relates to a soil remediation method. According to the in-situ combined remediation method, a chemical oxidation reagent is prepared from the following components including sodium persulfate as an oxidant, sodium hydroxide or calcium peroxide as an activator and sodium thiosulfate as a sustained-release agent; a microorganism simulation nutrient is prepared from the following components including sodium phosphate and ammonium sulfate; the molar ratio of the sodium persulfate and the activator is 5:1; the quantity of the sustained-release agent is 1-5 percent of the quantity of the oxidant and the activator; the molar ratio of C, N and P as the nutrients for promoting growth of microorganisms is 120: 10: 1; a phosphorus source is the sodium phosphate (Na3PO4.12H2O); a nitrogen source is the ammonium sulfate ((NH4)2SO4); and a carbon source is petroleum pollutants and is estimated according to the actual pollutant degree. The in-situ combined remediation method for the petroleum contaminated site soil can reach the purpose of completely remediating the long-term petroleum contaminated site soil, and thus solving the problems of difficulty in remediating aged contaminated soil microorganisms, higher chemical oxidation cost and larger environmental influence and lowering the remediation cost.

The invention discloses a fabric desizing agent. The fabric desizing agent consists of the following components in parts by weight: 10-20 parts of amylase, 3-5 parts of sodium persulfate, 2-6 parts of methyl cellulose, 0.2-0.6 part of sodium hydroxide, 10-20 parts of butyl acetate, 20-40 parts of isopropyl alcohol, 1-3 parts of butyl phthalate and 100-160 parts of water. Compared with the prior art, the fabric desizing agent has the following beneficial effects of (1) being good in desizing effect and enabling size to be fully hydrolyzed without damaging a fabric, and (2) removing impurities and minerals on the fiber, and improving the whiteness and hydroscopicity of a semi-finished product of the fabric.

Disclosed antibacterial tipping paper is prepared from the following raw materials in parts by weight: 70-80 parts of softwood pulp, 80-90 parts of hardwood pulp, 2-3 parts of sodium carboxymethylcellulose, 1-2 parts of 3-(trimethoxysilyl)-1-propanamine, 1-2 parts of 3-aminopropyltriethoxysilane, 1-2 parts of sodium dodecyl sulfate, 1-2 parts of N,N'-ethylenebis(stearamide), 5-8 parts of attapulgite, 2-3 parts of sodium metasilicate, 2-3 parts of ascorbic acid, 1-2 parts of sodium persulfate and 1-2 parts of wintergreen oil. The technological effects comprise that by adding wintergreen oil into the raw materials, the tipping paper is increased in sterilization effect and antibacterial effect and also is prevented from mildewing; and also, by adding ester materials into the raw materials and through cross-linking polymerization, the toughness and the flexibility of the tipping paper are increased, also the tipping paper is improved in water resistance and wet resistance, and a paper sheet has good lip sticking resistance.

Disclosed osmanthus-fragrans-fragrance tipping paper is prepared from the following raw materials in parts by weight: 100-120 parts of softwood pulp, 60-70 parts of softwood pulp, 2-4 parts of ethanol, 2-3 parts of ascorbic acid, 3-5 parts of guar gum, 1-2 parts of dibutyl phthalate, 2-3 parts of polyvinyl alcohol, 1-2 parts of 2-butoxyethanol, 1-2 parts of osmanthus fragrans essential oil, 1-2 parts of hydrogen peroxide, 1-2 parts of ferrous sulphate, 3-4 parts of acrylic acid, 1-2 parts of sodium persulfate, 2-3 parts of a cross-linking agent TAC and 1-2 parts of grape seed oil. By adding osmanthus fragrans essential oil into the raw materials, osmanthus fragrans fragrance is added into the tipping paper, and also the health-care function of osmanthus fragrans is added into the tipping paper; and also, by adding ester materials into the raw materials and through cross-linking polymerization, the toughness and the flexibility of the tipping paper are increased, also the tipping paper is improved in water resistance and wet resistance, and a paper sheet has good lip sticking resistance.

The invention provides a method for treating surplus sludge produced after biological treatment of wastewater. By adding a ferrous sulfate solution, a sodium persulfate solution or a potassium persulfate solution, and industrial coal ash, the sludge is treated to obtain a filter cake and a filter liquor. Compared with the prior art, adding divalent ferric salt and heating synergize to stimulate the persulfate to produce a free sulfate radical having a strong oxidizing property, the free sulfate radical is used to efficiently break a microbial cell in the sludge, then the microorganism is inactivated, the adhesive action with an extracellular polymeric substance is remarkably weakened, the extracellular polymeric substance is then stripped, the bond-state water is released, and the structure and the surface hydrophobicity of the sludge flocculant are changed; after the industrial coal ash is added, the permeability of the filter cake is improved, and the filter cake can play the role of a filter aid. According to the method, the specific resistance of the sludge is as low as (0.2-0.5)*108S<2>/g, the moisture content of the dehydrated filter cake is as low as 40-60%, the secondary pollution caused by common flocculants like polyacrylamide is reduced, the operating cost for the dehydration of the sludge is lowered, original processing equipment can be used to implement the method without any transformation, the operation is convenient, and the dehydrated sludge is directly backfilled or is used to produce a ceramsite or building material.