34results about How to "Stay acidic" patented technology

The invention belongs to the technical field of organic polluted soil remediation and discloses a method for remediating phthalic acid esters (PAEs) polluted soil by using microwave enhanced calcium peroxide. The method comprises the steps of preparing a slurry soil mixed solution from the PAEs polluted soil according to a certain liquid-solid ratio; adding a certain quantity of citric acid, ferrous sulfate and calcium peroxide into the solution; and carrying out microwave treatment and standing to enable the degradation rate of PAEs in the soil to reach more than 80%. The method has the advantages of simple process condition, low operation requirement, high treatment efficiency, low oxidizing agent waste and the like and is suitable for remediating the PAEs polluted soil.

The invention discloses acidic organic fertilizer special for blueberries. The acidic organic fertilizer special for the blueberries is prepared from, by weight, 80-120 parts of crop straw, 60-80 parts of animal waste, 10-20 parts of pond sludge, 5-15 parts of urea, 2-8 parts of humic acid, 3-9 parts of expansion sand, 1-5 parts of talcum powder, 2-5 parts of cottonseed meal, 3-5 parts of citric acid, 1-5 parts of EM bactericides, 2-4 parts of zinc sulfate, 1-3 parts of monoammonium phosphate, 2-4 parts of potassium chloride, 3-5 parts of manganese sulfate, 2-4 parts of barium sulfate and 4-8 parts of soil acidity conditioners. The invention further provides a preparation method of the acidic organic fertilizer special for the blueberries. According to the acidic organic fertilizer special for the blueberries, the acidity of a planting field of the blueberries can be kept, an acidic planting environment is supplied to growth of the blueberries, and the survival rate and yield of the blueberries are effectively improved.

The invention discloses a bioremediation method for soil polluted by heavy metal lead cadmium and base on kosteletzkya virginica. The bioremediation method comprises the following steps of composite soil preparation, nutrient soil preparation, feeding block preparation, seed pretreatment, sowing, transplantation, fertilization and harvesting. According to the bioremediation method for the soil polluted by the heavy metal lead cadmium and base on the kosteletzkya virginica, the survival rate of the kosteletzkya virginica can be improved, the kosteletzkya virginica grows more robust, and the heavy metal lead cadmium in the soil can be efficiently absorbed; and the absorption rate of the kosteletzkya virginica on the heavy metal lead cadmium is improved by 70% or over compared with the absorption rate of commonly-cultivated kosteletzkya virginica.

The invention discloses a method for preparing titanium dioxide from a waste honeycomb denitration catalyst. The method comprises the steps of pretreatment, acidolysis, sedimentation and impurity removal, seed crystal preparation, metatitanic acid preparation by hydrolysis, titanium dioxide preparation and the like. Preparation of the titanium dioxide from the waste honeycomb denitration catalystis combined to a production process for preparing titanium dioxide by an existing sulfuric acid method, existing production equipment is utilized fully, investment on new plant equipment is reduced, meanwhile, the recovery rate of the titanium dioxide is high, and the product meets the production requirement. According to the method, an additional seed crystal hydrolysis process is adopted, pH ofthe slurry is controlled to maintain strong acidity, removal of impurities is facilitated, waste acid generated by hydrolysis can be recycled, and economic and environmental benefits are high.

The invention discloses a carbon-based solid acid Fenton carrier as well as a preparation method and an application thereof, and belongs to the field of water treatment material. The carbon-based solid acid Fenton carrier takes carbon as the framework and is characterized in that the percentage by weight of (-SO3H), (alpha-Fe2O3) and FeO (OH) is (1-2): (0.55-0.75): (0.75-0.95), wherein the carbon weight is 100. According to the preparation method, a carbon material is prepared firstly, a black sulfonated carbon material solid acid is then obtained and placed in (1.5-2.5) mol/L of Fe (NO)3, vacuum drying is performed after mixing, and a product is taken out for cooling which is repeated until the weight is unchanged; unloaded iron oxide is washed off by distilled water; and rinsing and drying are performed. The material has characteristics of the solid acid, can provide an acid environment required by a Fenton reaction, repeated use requirement can be met, and the acidity of a reaction environment can be maintained. Further, the problem that pH is required to be adjusted repeatedly to meet treatment and discharge requirementsof the Fenton reaction issolved.

The invention discloses a catalyst for low-molecular straight-chain paraffin (nC5-nC8) isomerization in Fischer-Tropsch synthesis and a preparation method and application thereof for solving the problems of low activity, poor stability and low conversion rate of an existing catalyst for low-molecular straight-chain paraffin isomerization in Fischer-Tropsch synthesis. In the preparation method, anAl2O3-ZrO2 composite oxide carrier is prepared with a coprecipitation method, a lanthanum salt is added to increase the proportion of the zirconia tetragonal phase and regulate the Al2O3 content to maintain the acidity of the catalyst, then a Ni-WO3/Al2O3-ZrO2 catalyst is prepared with an equivalent-volume impregnation method, and thus the catalyst for low-molecular straight-chain paraffin isomerization in Fischer-Tropsch synthesis is obtained, wherein Al2O3-ZrO2 serves as the carrier of the catalyst, and the active metal components of the catalyst include 1-5 wt% of Ni, 10-15 wt% of W and 0.5-2.5 wt% of La. The catalyst has high isomerization activity and selectivity, and good repeatability and catalytic stability; besides, the reaction temperature is low, and the isomerization activity of low-molecular straight-chain paraffin can be maintained at a high temperature.

The invention provides a way for recovering the saponified rosin in industrial sewage, which is characterized in that first the anti-dyeing wax on wax-printed figured cloth is withdrawn by caustic soda, and a lot of saponified rosin is left in the sewage; the sewage containing a lot of saponified rosin is collected and stored, and conveyed into a neutralizing and separating device; the acid amount necessary for the neutralizing reaction is adjusted by monitoring the pH value of the sewage from wax printing by a pH meter; meanwhile, the sewage and the acid are mixed evenly by a mixer; the sewage from wax printing is heated by a heater, and the suspended rosin particles are separated to the max. extent, then the suspended rosin particles are sent again to a hi-temperature furnace for smelting, the foreign matter and water are removed by filtering; one or a plurality of hi-temperature smeltings can be done, till the rosin is purified and solved and recovered. The invention is of simple process, easy to operate, of good efficiency and low cost. The invention saves natural resource, protects the ecologic environment, and facilitates the emission of waste near to null. The invention greatly improves the utilization of natural resource, is an ideal way and equipment for recovering saponified rosin in industrial sewage.

The invention provides a perfluorinated ion exchange resin and a preparation method thereof. The perfluorinated ion exchange resin has a structure shown in a formula (I). The preparation method of the perfluorinated ion exchange resin comprises the following step: performing complete or partial grafting reaction on a precursor resin and a functional monomer under certain conditions. The perfluorinated ion exchange resin synthesized by the invention can simultaneously meet the requirements for high ion exchange capacity and large mechanical strength, and has wide applicability; and by regulating the ratio of the functional monomer in the raw materials, perfluorinated ion exchange resins which have different ion exchange capacities and mechanical properties to meet various requirements can be prepared.

An environment-friendly cleaning agent comprises, by using amount, 10-15% of anionic surfactant, 10-15% of nonionic surfactant, 5-10% of zwitterionic surfactant, 15-25% of acid washing aid, 3-5% of alkali salt, 5-10% of penetrant, 3-5% of dispersant, 3-5% of cosolvent, 3-5% of metal protective agent and the balance of deionized water. The environment-friendly cleaning agent has the advantages of high penetration performance, good deoiling and wax-removal cleaning function, capability of removing various oil dirt and dirt, good cleaning effect on polishing wax, safety in use, freeness of skin irritation and human nontoxicity, high water adaptability and suitability for deoiling and wax-removal cleaning of various mechanical devices and parts.

The present invention discloses a molecular sieve catalyst improvement process, which comprises: A, raw material optimization: selecting a Y-type zeolite as a molecular sieve catalyst raw material, especially a high-silicon Y-type zeolite, and a Y-type molecular sieve unit cell in the Y-type zeolite contains three types of cages, which are respectively a double six-ring cage, a sodalite cage and a supercage; and B, modification treatment: using a glass rod to pre-mix and stir the Y-type zeolite raw material and a complexing agent compound solution by a user, and conducting stirring to a uniform state, so as to obtain the modified Y-type zeolite raw material. According to the preparation method disclosed by the invention, through the flow matching of raw material optimization, modification treatment, Fenton reagent dipping, high-pressure crystallization treatment, product washing and drying and roasting treatment, optimization selection is carried out on the characteristics of the material, the quality of the prepared material of the Y-type molecular sieve catalyst is improved, and the raw material of the Y-type molecular sieve catalyst is subjected to activating chemical combination improved reaction treatment; and the acidity and stability of the Y molecular sieve are kept while the mesoporous structure is ensured.

The invention provides a preparation method of saline water daylily. The preparation method comprises the following steps: (1) adding 2-3 parts of table salt to 50-60 parts of fresh daylily, performing uniform mixing, performing kneading, and performing standing at room temperature for 10-30 hours until daylily strips become soft and the daylily color becomes faint yellow from yellow green; (2) salting the daylily, adding water, adding a disinfectant containing chlorine dioxide or disinfectant fluid for disinfection and sterilization, adding citric acid, ascorbic acid and sodium benzoate, performing stirring until the materials are completely dissolved, and performing uniform mixing; and (3) performing sealing and packaging to obtain the saline water daylily. The color, the flavor, the taste, the nutrition and the moisture of the prepared saline water daylily are maintained, the shelf life can reach half a year or one year, and the saline water daylily is mainly used for hot pots, spicy hot pots and cold vegetable dishes in a sauce.

The invention provides a method for simultaneously measuring benzoyl peroxide and dimethyl fumarate in a food. The method comprises the following steps: 1, preparing a sample into a to-be-measured sample; 2, preparing a gradient mixed standard solution of the benzoyl peroxide and the dimethyl fumarate; 3, weighing the sample into a centrifuge tube, adding a methanol aqueous solution, and carryingout ultrasonic extraction after oscillating and uniform mixing; 4, adding a ferrous sulfate solution and an acetic acid solution into the centrifuge tube, reducing benzoyl peroxide in the sample intobenzoic acid, marking up the volume to scale by using methanol water, carrying out ultrasonic extraction and centrifugation after further oscillating and uniform mixing, taking supernate and making the supernate pass through a microporous filter membrane to obtain a to-be-measured solution; 5, carrying out measuring by using a high performance liquid chromatograph, and drawing standard curves of the benzoyl peroxide and the dimethyl fumarate; and 6, calculating the content of the benzoyl peroxide and the content of the dimethyl fumarate in the sample. The efficient, accurate, stable and reliable detection method is provided for simultaneously measuring the benzoyl peroxide and the dimethyl fumarate in the food.

The present invention discloses clarified nutritional type drink suitable for populations with high blood sugar and a production method thereof. The clarified nutritional type drink comprises the following raw materials in parts by weight: 100 parts of kiwi fruit juice, 20-25 parts of an ethanol extract of herba portulacae, 0.2-0.4 part of aspartame, 480-800 parts of water, 2.5-3.0 parts of beta-cyclodextrin and 0.15-0.2 part of sodium carboxymethylcellulose. The production method of the drink comprises the following operation steps: kiwi fruit juice preparing, herba portulacae concentrate preparing, homogenizing and centrifuging, blending and canning, etc. The aspartame replaces traditional sweeteners of sucrose, etc.; the beta-cyclodextrin and sodium carboxymethylcellulose are compoundedto be used as a stabilizer; nutrient components of vitamin C, polysaccharides, flavonoids, polyphenols, etc. are less damaged; the original color and luster of the kiwi fruits are retained; and the clarified nutritional type drink is low in sugar, low in calories and high in nutrients, can provide long-term consumption of the public, especially patients with diabetes, and is simple in the production method and easy for industrial production.

The invention provides an acidic ionic liquid and a preparation method thereof, and particularly provides a cleaning agent containing the ionic liquid and a semiconductor substrate cleaning method using the cleaning agent, and the cleaning agent contains the ionic liquid, so that the cleaning agent and H2O2 can realize full-process cleaning of front and back sections such as FEOL and BEOL, and metal ions can be complexed, so that the cleaning effect is good, and the service life of the cleaning agent is prolonged. The cleaning agent prepared by the method inhibits decomposition of H2O2, prolongs the service life of the cleaning agent, prolongs the cycle index of the cleaning agent, also ensures the stability in the use process, and has huge potential application prospects and potential in the technical field of semiconductor cleaning.

The invention discloses continuous powder humidifying and forming equipment, an application method and a catalyst carrier preparation method, and the continuous powder humidifying and forming equipment comprises a powder humidifying and mixing machine, a wet material driving machine and an extrusion forming machine which are communicated in sequence, the wet material driving machine comprises a material driving chamber, a lower rotating shaft in the center of the material driving chamber and a material driving scraper connected with the lower rotating shaft, and the outer edge of the material driving scraper is matched with the inner wall of the material driving chamber. The continuous powder humidifying and forming equipment provided by the invention is suitable for forming viscous materials after liquid-solid mixing. The method is especially suitable for the process of preparing a catalyst carrier by mixing alumina powder and liquid acid. The rapid mixing, humidifying and extrusion molding process of the aluminum oxide powder and the liquid acid is realized, the molding flow and preparation time of the catalyst are shortened, and the production efficiency of the catalyst is improved.