37 results about "Sodium peroxodisulfate" patented technology

This invention provides a liquid composition that removes titanium nitride from a substrate without corroding tungsten or a low-k interlayer dielectric also present on said substrate. Said liquid composition has a pH between 0 and 4, inclusive, and contains the following: at least one oxidizing agent (A) selected from the group consisting of potassium permanganate, ammonium peroxodisulfate, potassium peroxodisulfate, and sodium peroxodisulfate; a fluorine compound (B); and a tungsten-corrosion preventer (C). The tungsten-corrosion preventer (C) either contains at least two different compounds selected from a group of compounds (C1) consisting of alkylamines, salts thereof, fluoroalkylamines, salts thereof, and the like or contains at least one compound selected from said group of compounds (C1) and at least one compound selected from a group of compounds (C2) consisting of polyoxyalkylene alkylamines, polyoxyalkylene fluoroalkylamines, and the like. The mass concentration of potassium permanganate in the abovementioned oxidizing agent (A) is between 0.001% and 0.1%, inclusive, and the mass concentration of the abovementioned fluorine compound (B) is between 0.01% and 1%, inclusive.

The invention discloses a making method of carbon-based high-valent silver molecular crystal battery, which comprises the following steps: dissolving silver nitrate into pure water; stirring; placing the active carbon in the silver nitrate solution; adsorbing; filtering; drying the active carbon; placing the potassium peroxodisulfate or sodium peroxodisulfate as oxidizer into distilled water; adding sodium hydroxide; diluting; heating; stirring to react with dried active carbon; insulating; filtering; washing four times through pure water; obtaining the product with Ag4O4 distributed evenly on the surface of active carbon; displaying stronger chemical adsorbing ability and chemical reactivity; reinforcing the purifying capacity of organic toxic and harmful material absorbed by active charcoal.

The invention discloses a preparation method of a waste water remediation agent based on incineration fly ash, comprising: (1) weighing incineration fly ash, tuff powder and sodium hydroxide respectively, mixing them, and heating and activating to obtain activated fly ash powder; 2) Weigh iron tailings and scrap iron slag respectively, mix, grind, and sieve to obtain iron-based powder; (3) weigh activated fly ash powder, iron-based powder and sodium peroxodisulfate respectively, mix evenly, and grind , to obtain a wastewater remediation agent. Combining the solidification technology of incineration fly ash and the technology of removing pollutants through oxidation and reduction, the two complement each other and cooperate with each other to realize the treatment of hexavalent chromium, pentavalent arsenic, divalent cadmium and benzo (α) Simultaneous and efficient removal of pyrene, with a removal rate as high as 98%; the pollutants are solidified inside the restoration agent particles to avoid leaching of pollutants; it provides a new application direction for the harmless disposal and resource utilization of incineration fly ash ; The preparation method of the restorative agent is simple, and the raw material is cheap.

The invention discloses a method for improving cement solidification of chromium slag, which comprises the following steps: grinding and sieving chromium slag to obtain chromium slag powder; mixing acetic acid aqueous solution and chromium slag powder, and stirring to obtain chromium slag slurry; Sodium sulfate is mixed into the chromium slag slurry, and stirred until the sodium peroxodisulfate is completely dissolved to obtain the sulfur-doped chromium slag slurry; the aluminum ash and calcium oxide are weighed and mixed to obtain an externally added mixed powder; the sulfur-doped chromium slag is weighed separately Physalis, externally added mixed powder and cement, mixed, stirred evenly, molded, cured, to obtain chromium slag cement solidified body. The invention also discloses a chromium slag cement solidified body. The method of the invention can not only realize the reduction and detoxification of chromium in the acid leachable state in the chromium slag, but also strengthen the hardening process of the hydrated calcium silicate by generating ettringite, calcium acetate and chromium hydroxide, so as to fully wrap the chromium slag. The uniaxial compressive strength of the chromium slag cement solidified body prepared by the present invention is 67.35% higher than that of the traditional chromium slag cement solidified body, and the leaching toxicity of hexavalent chromium is lower than "Standards for Pollution Control of Domestic Garbage Landfill Sites" (GB16889-2008 ).

The invention discloses a method for treating medical waste liquid by electron beam radiation technology, which comprises the following steps: introducing the medical waste liquid into an electron beam disposal tank, adding sodium peroxodisulfate into the disposal tank, stirring until the sodium peroxodisulfate is completely Dissolve, start the electron beam accelerator to irradiate the medical wastewater, and at the same time expose carbon dioxide to the disposal tank; stop the exposure to carbon dioxide and irradiation treatment, then add sodium sulfite to the disposal tank, stir until the sodium sulfite is completely dissolved, and start the electron beam again The accelerator irradiates medical wastewater, stops stirring and irradiating treatment, and completes an electron beam irradiation oxidation-reduction alternate strengthening treatment. On the basis of the traditional electron beam irradiation wastewater treatment process, the present invention adds sodium peroxodisulfate and sodium sulfite respectively, adds stirring tank and carbon dioxide aeration, alternately strengthens the oxidation and reduction in the electron beam irradiation stage, and realizes the treatment of medical waste. Higher COD removal rate; simple treatment method.

The invention discloses a method for synchronously achieving incineration fly ash detoxification and chromium slag reduction curing. The method includes the following steps that (1), incineration flyash and tuff are weighed, mixed to be uniform and ground, and gelatinized powder is obtained; (2), sodium hydroxide and sodium silicate are weighed, mixed to be uniform and ground, and an alkali activator is obtained; (3), sodium persulfate and sodium oxalate are weighed, mixed to be uniform and ground, and a reductive detoxification inducer is obtained; (4), chromium slag, the gelatinized powder,the alkali activator and the reductive detoxification inducer are weighed, mixed to be uniform and ground, and fly ash and chromium slag powder is obtained; (5), the fly ash and chromium slag powderis weighed and dissolved in water, the materials are mixed to be uniform, and fly ash and chromium slag slurry is obtained; (6), the fly ash and chromium slag slurry is sealed, activated through microwaves, cooled and put in a die to be cured. The leaching concentrations of multiple heavy metals and dioxin in the fly ash and a chromium heavy metal in the chromium slag are all lower than the entrance limiting value of a municipal solid waste landfill. Treated cured bodies have high acid resistance and high constraint capacity for heavy metal inorganic pollutants and organic pollutants.

The invention discloses a method for preparing magnetic carbon cloth from non-woven fabric waste, which comprises the following steps: respectively weighing ferric chloride and sodium peroxodisulfate, then dissolving them in water, stirring until they are completely dissolved under sealed conditions, and preparing iron sulfur solution ; Immerse the non-woven fabric in the iron sulfur solution, and soak it for 30-60 minutes under sealed conditions, then take out the non-woven fabric and dry it until its moisture content is 20%-40%; Microwave activation is carried out in the middle; after the preset time is reached, the microwave activation is terminated, and the magnetic carbon cloth is obtained after cooling to room temperature. The content of the present invention also includes the magnetic carbon cloth prepared by the method and its application. The invention strengthens the carbonization process of non-woven fabric waste through iron ions and peroxodisulfate radicals, simultaneously generates and effectively loads magnetic ferrite on the surface of the carbon fabric. The resistivity of the magnetic carbon cloth prepared by using the non-woven fabric waste in the invention is at least 1.37Ω•m, and the magnetic induction intensity is 0.12mT.