37results about How to "Fast enrichment" patented technology

The invention discloses an adhesive resin for multilayer coextrusion barrier package and a barrier structure prepared from the same. The adhesive resin comprises the following components in parts by weight: 85-55 parts of propylene-ethylene-alpha olefin copolymer, 5-15 parts of vinyl elastomer and 10-30 parts of functionalization modified propylene-alpha olefin copolymer. The barrier structure comprisesa barrier layer, wherein at least one surface of the barrier layer is bonded with a polypropylene layer through an adhesive layer; the adhesive layer is the adhesive resin in the first target; the barrier layer is an ethylene-vinyl alcohol copolymer or nylon; and the adhesive resin accounts for 10-15 wt% of the barrier structure. The adhesive resin has the advantages of favorable bonding property, favorable working properties, fewer crystal points, high transparency and the like.

The invention relates to a method for removing iron impurities and gathering cupric ions in a copper sulfate solution. The method includes the steps of adding a strong acid cation exchange resin column to a copper sulfate crude solution for removing iron; adding a macroporous strong acid cation exchange resin column to the copper sulfate solution with low iron content for adsorbing and gathering all cupric ions; backwashing for desorption with sulfuric acid after cupric ions adsorbed by the macroporous strong acid cation exchange resin are saturated, wherein the desorbed macroporous strong acid cation exchange resin can be recycled. The method for removing the iron impurities and the gathering cupric ions in the copper sulfate solution is simple in technology, short in process, high in copper extraction rate, low in production costs and capable of achieving the purpose of copper gathering as well as iron removing, the obtained copper sulfate solution is high in purity, the strong acid cation exchange resin and the macroporous strong acid cation exchange resin can be recycled, and the entire process is environmentally friendly and pollution-free.

The invention discloses a magnetic extraction and enrichment method of an effective component in rheum officinale. A rheum officinale extracting solution is prepared from rheum officinale medicinal materials or a rheum officinale solid preparation according to the pharmacopeia, wherein the rheum officinale extracting solution, mesoporous ferroferric oxide nano-particles and an ionic liquid are prepared into enriched mixed liquor in a manner of adding water; each 1230mu L of enriched mixed liquor comprises the following components: 20mu L of rheum officinale extracting solution, 8-20mg of nano mesoporous ferroferric oxide, 0.2-0.6mg of ionic liquid, and the balance of water; the pH value is 9-13. The method comprises the following steps: loading the enriched mixed liquor into a centrifuge tube, whirling for 10-30 seconds on a vortex finder, approaching the bottom of the centrifuge tube by a magnet after standing; gathering the mesoporous ferroferric oxide nano-particles at the bottom of the centrifuge tube, and removing an upper water solution, so as to obtain enriched mesoporous ferroferric oxide nano-particles; eluting by a methanol solution containing acetic acid of which the mass fraction is 1-4%; collecting eluent and drying by distillation, so as to prepare enriched rheum officinale extractum, wherein the ionic liquid is brominated 1-dodecyl-3-methylimidazole, chloridized 1-dodecyl-3-methylimidazole, 1-butyl-3-methyl imidazolium tetrafluoroborate or 1-butyl-3-methyl imidazole polystyrene sulfonate, preferably chloridized 1-dodecyl-3-methylimidazole. The method disclosed by the invention is fast in speed, good in enrichment effect, and high in repeatability and reproducibility.

The invention discloses a method for starting an anaerobic ammonium oxidation reactor to treat high-salt nitrogenous wastewater. Anaerobic sludge and aerobic sludge are inoculated to a reactor, starting strategies are as follows: at first, anaerobic ammonium oxidation bacteria are enriched in the reactor through maintaining the conditions of anaerobism, organic carbon source-free feed water and no saltness, and a microflora system which takes the anaerobic ammonium oxidation bacteria as dominant bacteria is built; then, salt-tolerant anaerobic ammonium oxidation bacteria are preferentially selected under the conditions of low nitrogen concentration and low saltness, non-dominant bacteria are elutriated, and a microflora system which takes the salt-tolerant anaerobic ammonium oxidation bacteria as dominant bacteria is built; and finally, the nitrogen concentration and saltness are gradually increased, so that the ammonium oxidation bacteria can be suitable for high nitrogen concentration and high saltness environments. Through a mode of gradually changing a feed water base material, the problem of slow anaerobic ammonium oxidation bacteria enrichment under saltness inhibition is solved, the starting mode is simple and practicable, and the difficulty in starting a high-salt wastewater anaerobic ammonium oxidation treatment system is lowered.

A method for extracting lead-zinc-silver in lead-zinc-silver composite sulfide ore, adding coal powder and quicklime powder to composite mineral raw materials containing lead and / or zinc and / or silver, fully mixing to form a mixture, and pressing the mixture into balls, Then the mixture after briquetting is subjected to vacuum heating and reduction, the heating temperature is controlled separately according to the components extracted from the mineral, and the obtained metal vapor of lead and / or zinc and / or silver is collected by condensation, and the collected condensate A mixture of lead and / or zinc and / or silver. The invention is convenient to operate, safe, hygienic and pollution-free. The method for enriching metallic lead and zinc has the advantages of fast enrichment speed, high production efficiency and small amount of pollution. The method of the present invention for separating metals in minerals has the characteristics of short process, short period, high efficiency and high comprehensive utilization rate of resources, and can greatly improve the efficiency of metal separation and extraction. By adopting the method of the invention, the direct recovery rate of lead and zinc can be more than 98%.

The invention discloses a method for separating zinc-cadmium-lead alloy materials from copper-cadmium slag and nickel-cobalt slag generated in a zinc smelting process. The method comprises the following steps that a mixture of the copper-cadmium slag, the nickel-cobalt slag or the copper-cadmium slag and the nickel-cobalt slag are prepared into the coal powder and alkaline-earth metal oxide, the mixture is subjected to vacuum distillation, the distillation pressure is less than 200 Pa, heating is started, the distillation temperature ranges from 900 DEG C to 1200 DEG C, then heat preservationis carried out for 0.5h-10h, the distillate obtained by collecting and distilling contains lead, zinc, and cadmium alloy materials, and the distillation residues are copper, nickel, cobalt and the like. According to the method, the lead, the zinc, the cadmium, the copper and the nickel in the copper-cadmium slag and the nickel-cobalt slag are utilized, the lead in the copper-cadmium slag and the nickel-cobalt slag is realized by the vapor pressure difference of the cobalt at different temperatures, zinc, cadmium, copper, nickel and cobalt, a large amount of lead, zinc and cadmium in the distillation process can be separated, and the residual substances in the distillation residues are copper, nickel and cobalt, so that the preliminary separation of metal in the copper-cadmium slag and thenickel-cobalt slag is realized. The method is convenient to operate, high in energy utilization rate and heating efficiency, safe, sanitary and pollution-free.

The invention relates to a graphene oxide / molecular imprinting filtering membrane for detecting propranolol, as well as a preparation and an application thereof. Specifically, the invention discloses a method for detecting propranolol in a detected sample by adopting the graphene oxide / molecular imprinting filtering membrane and a metallic nanometer grain combined raman technique. The detection method has the advantages of high sensitivity, simple and convenient operation, less time consumption, low cost, and the like.

The invention provides a process for separating boron isotope with a boron special-effect resin ion exchange chromatography. The process adopts chelate-typed ion exchanging resin-boron special-effect resin, separates <10>B from boric acid solution, and uses hydrochloric acid or nitric acid as eluent to separate the boron isotope in the boric acid solution by the adsorption of the boric acid on resin columns and the washing of the eluent on the boric acid adsorbed on the resin. According to the process of the invention, the enrichment ratio of the <10>B can be enriched from natural 20 percent or so to 91 percent or so, with fast enrichment speed. The process of the invention is a simple and high-efficiency process which separates the boron isotope from the boric acid solution.

The invention discloses a method for detecting Yersinia enterocolitica, comprising the following steps: (1) taking a sample to be tested under sterile conditions, adding Al(OH) 3 Homogenize in the PBS buffer solution to obtain the sample bacterial liquid; (2) heat-treat the sample bacterial liquid in a water bath, centrifuge, discard the supernatant, and collect the bacterial cells; (3) add Yersinia enterocolitica to the bacterial cells Bacteria immune magnetic beads, after shaking, put them on the magnetic stand for stratification, discard the upper layer, and obtain Yersinia enterocolitica immune magnetic beads with bacteria adsorbed; Yersinia immunomagnetic beads were eluted, and then PBS buffer was added to the eluted Yersinia enterocolitica immunomagnetic beads, and mixed evenly to obtain the sample solution to be tested; (4) The sample liquid is cultivated, observed and tested. The detection method provided by the invention has strong specificity and high sensitivity, and can effectively shorten the detection time and reduce the detection cost.

The invention discloses a method for quickly starting a shortcut nitrification reactor. The method comprises the following steps: after performing inoculation on the reactor, firstly performing overaeration, and applying an aeration impact so as to accelerate the elimination of anaerobic bacteria in sludge; quickly enriching nitrifying bacteria, and then applying a combined load impact comprising a substrate concentration impact and a hydraulic retention time impact so as to quickly restrain and eliminate nitrite oxidizing bacteria; finally, under the condition that an appropriate substrate concentration and an appropriate hydraulic retention time are maintained, increasing the concentration of an inorganic carbon source so as to enrich ammonia oxidizing bacteria and accelerate the accumulation of nitrite. According to the invention, the various continuous impacts are combined, the enrichment of the ammonia oxidizing bacteria in the sludge is accelerated within a shorter time, and the quick start of the shortcut nitrification reactor is realized.

The invention relates to the technical field of separation devices and provides a metal ion separation device. The metal ion separation device comprises an adsorption tower and a desorption tower, wherein an upper liquid distributor of the adsorption tower and a lower liquid distributor of the adsorption tower are fixedly installed in an upper inner cavity and a lower inner cavity of the adsorption tower respectively; an upper liquid distributor of the desorption tower and a lower liquid distributor of the desorption tower are fixedly installed in an upper inner cavity and a lower inner cavity of the desorption tower respectively; strongly acidic cationic resins are fixedly installed in an adsorption tower inner cavity between the upper liquid distributor of the adsorption tower and the lower liquid distributor of the adsorption tower; strongly acidic cationic resins are fixedly installed in a desorption tower inner cavity between the upper liquid distributor of the desorption tower and the lower liquid distributor of the desorption tower. The metal ion separation device has a reasonable and compact structure, is convenient to use, has the characteristics of strong selectivity, big concentration multiple, high enrichment efficiency, high enrichment speed, low investment, low operating cost, simplicity in procedure operation and control and the like and is especially suitable for separation and enrichment of the metal ions in low-concentration solutions.