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33results about How to "Mild desorption conditions" patented technology

Method for enriching rhenium from copper smelting waste acid

The invention discloses a method for enriching rhenium from copper smelting waste acid. According to the adopted technical schemes, precipitant is added into the copper smelting waste acid containing low-concentration rhenium until pH of a solution is 8-12, filter pressing and separating are conducted, filtrate is collected, the pH is adjusted to 1-8, the filtrate is pretreated through a biological carbon adsorption tower, interfering ions are further removed, then the rhenium in the solution is absorbed through a copper-carrying biological carbon adsorption tower, adsorption is stopped after adsorption reaches saturation, elution with an alkaline liquid and concentration are conducted, and rhenium-containing enrichment liquid is obtained. According to the method for enriching the rhenium from the copper smelting waste acid, technology is reasonable, no-pollution is achieved, the operation condition is mild, the recovery rate is up to over 99%, the maximum adsorption capacity is that 100 mg rhenium can be absorbed by per gram of adsorbent, rhenium enrichment is increased by more than 100 times, and rapid and efficient recovery of the low-concentration rhenium in the copper smelting waste acid can be realized.
Owner:FUZHOU UNIV

Method for adsorbing and separating xanthophyll by utilizing hyper-cross-linked resin

The invention discloses a method for adsorbing and separating xanthophyll by utilizing hyper-cross-linked resin. The method comprises the following steps of adsorbing and desorbing a preprocessed xanthophyll saponification solution by an adsorption column which is filled with the hyper-cross-linked resin, and obtaining a xanthophyll solution, wherein the hyper-cross-linked resin is prepared through a Friedel-Crafts cross-linking reaction and an acetic anhydride reaction by taking polystyrene-divinyl benzene as a skeleton, the average grain diameter of the hyper-cross-linked resin is 0.3mm to 0.8mm, the water content is 20 weight percent to 50 weight percent, the pore diameter is 1.5nm to 5.5nm, the porosity is 25 percent to 45 percent, the wet density is 1.05g / cm<3> to 1.18g / cm<3>, the average specific surface area is 500m<2> / g to 950m<2> / g, the average pore volume is 0.542cm<3> / g to 0.985cm<3> / g, and the functional group is the carbonyl group. An adsorption medium adopted by the method disclosed by the invention has the advantages of large xanthophyll adsorption capacity, good adsorption selectivity, gentle desorption conditions, easiness in regeneration, long service cycle and the like.
Owner:NANJING UNIV OF TECH

A method for adsorbing and separating pentamethylenediamine by using ultra-high cross-linked resin

The invention discloses a method for separating pentamethylene diamine by utilizing ultrahigh crosslinking resin absorption. The method comprises the following steps: causing a preprocessed pentamethylene diamine fermentation liquor pass by an adsorption column filled with ultrahigh crosslinking resin, absorbing, cleaning impurities and desorbing, thereby acquiring a pentamethylene diamine adipic acid solution. According to the method provided by the invention, the adsorption column is adopted for separating the pentamethylene diamine from the fermentation liquor; all the operations can be performed under room temperature; the energy consumption in the separating process and the dosage of the organic extraction agent are greatly reduced; the selected adsorbing medium has the advantages of high adsorption capacity for pentamethylene diamine, high physical-chemical property stability, high adsorptive selectivity, mild desorbing condition, easiness in regeneration, long service life, and the like; the used adsorption column can be regenerated by using water; the acid-base or organic solvent need not be consumed; the energy consumption can be reduced and the wastewater discharge can be reduced; the problem of environmental pollution is avoided; the method is a more clean and environment-friendly production technique.
Owner:NANJING TECH UNIV

Uranium separation method and uranium adsorption material

The invention discloses a method for separating uranium from a low-acidity nitric acid solution as well as a uranium adsorption material used by the method and a preparation method. According to the method for separating uranium from the low-acidity nitric acid solution, an amidoximized chitosan water suspension liquid is added to a low-acidity uranium-containing solution, the pH value of the system is adjusted to be 2-7.5, the mixture is sufficiently vibrated or stirred, a liquid supernatant is separated through centrifugation, and nitric acid with the concentration of about 0.04-0.50 M is added for desorption. The desorption conditions are mild, discharge of large quantities of strong acid and toxic and harmful substances is avoided, no secondary pollutants are produced, and the uraniumadsorption material is a novel green and environment-friendly material. Corresponding experiments prove that the uranium adsorption material is applicable to treatment of low-acidity uranium-containing wastewater in the nuclear industry and enterprises in China, and the separation treatment method is relatively simpler and more convenient and can be used in a mass production environment.
Owner:LANZHOU UNIVERSITY

Traditional Chinese medicine for relieving cough and reducing sputum and preparation method of traditional Chinese medicine

The invention relates to a traditional Chinese medicine for relieving cough and reducing sputum and a preparation method of the traditional Chinese medicine. The preparation method comprises the steps of preparing platycodon grandiflorum, rhizoma anemarrhenae, radix peucedani, pericarpium citri reticulatae, rheum officinale, liquorice, bulbus fritillariae cirrhosae, gypsum, semen armeniacae amarum, folium perillae, semen lepidii, flos farfarae, radix stemonae, radix scrophulariae, radix ophiopogonis, flos buddlejae, radix asparagi, fructus schisandrae chinensis, fructus aurantii, semen trichosanthis, rhizoma pinelliae, radix aucklandiae, fructus aristolochiae, folium mori and pericarpium papaveris in parts by weight to achieve an optimization purpose, and carrying out dipping, extraction, decoction, concentration and filtering, so as to prepare cough-relieving and sputum-reducing particles. By virtue of mutual matching of the raw materials, the traditional Chinese medicine has the efficacies of eliminating dampness and phlegm, dispelling wind and heat, promote the secretion of saliva or body fluid, relieving cough and asthma and relaxing bowel, is mainly used for treating diseases including cough, excessive phlegm, asthma, swollen sore throat, lung heat, phlegm stagnation and yellow, thick sticky phlegm, can be well absorbed, does not easily develop drug resistance and has no toxic or side effects.
Owner:NANJING TONGRENTANG PHARM CO LTD

Runing granules and preparation method thereof

The invention belongs to the technical field of traditional Chinese medicines, and particularly relates to Runing granules and a preparation method thereof. The Runing granules comprise the following components in parts by weight: 200-350 parts of Chinese thorowax root, 100-300 parts of Chinese angelica, 30-150 parts of vinegar nutgrass galingale rhizome, 30-150 parts of red-rooted salvia root, 50-150 parts of parched white peony root, 50-100 parts of cowherb seed, 50-100 parts of red paeony root, 50-150 parts of fried large-head atractylodes rhizome, 20-150 parts of poria cocos, 30-80 parts of green tangerine peel, 20-100 parts of tangerine peel and 20-50 parts of mint. The prepared Runing granules are capable of regulating vital energy and dispelling melancholy and are used for treating mammary nodules caused by the stagnation of liver qi, and symptoms include premenstrual breast distending pain, two-rib distending pain and breast qi stagnation.
Owner:NANJING TONGRENTANG PHARM CO LTD

Preparation method for total flavonoids in V.amoena Fisch.var.angusta Freyn.

The invention relates to a preparation method for total flavonoids in V.amoena Fisch.var.angusta Freyn.. According to the technical scheme, V.amoena Fisch.var.angusta Freyn. medicinal material powder is taken and extracted at 70-90 DEG C with a 40-95% ethanol water solution as the solvent in the liquid-material ratio of 1:(10-20), and extraction liquor is obtained; an adsorption column filled with weak polarity-medium polarity macroporous adsorption resin is selected, the total flavonoid loading concentration is 0.21-3.18 mg / mL, the pH is regulated to be 1-8, samples are loaded on the adsorption column, the loading volume is 4-6 times the resin column bed volume, the adsorption flow velocity is regulated to be 2-6 mL / min for dynamic adsorption, elution is carried out with a 30-95% ethanol water solution at the flow velocity of 2-6 mL / min, and elution liquor is collected. According to the macroporous adsorption resin preparation method for total flavonoids, the yield of total flavonoids is high, desorption conditions are mild, the service cycle is long, regeneration is easy and convenient, the extraction ratio is high, and the cost is low; the preparation method is suitable for popularization and application in industrial production.
Owner:LIAONING UNIVERSITY

Simiaoyongan decoction active site dry extract powder and preparation method of clinical medicinal preparation by using dry extract powder

The invention relates to a simiaoyongan decoction active site dry extract powder and a preparation method of a clinical medicinal preparation by using the dry extract powder, and aims at solving the technical problems that effective anti-inflammatory substances in the simiaoyongan decoction are low in content and poor in compliance and the simiaoyongan decoction is inconvenient to take, carry and store. The preparation method comprises the following steps of: extracting honeysuckle, figwort root, Chinese angelica and liquorice with water, precipitating with ethanol, reclaiming ethanol from supernate, and concentrating; adding sodium hydroxide liquid, collecting supernate, adding hydrochloric acid liquid, and collecting supernatant liquid; passing the supernatant liquid through a resin column, removing washing water, collecting ethanol eluent, concentrating, and drying to obtain the simiaoyongan decoction active site dry extract powder; and adding auxiliary materials to prepare various clinical preparations. The method does not use other organic solvents except ethanol, is simple in process flow, low requirement on production equipment and low in cost, realizes the content of general flavone of over 60 percent, and is applicable to industrial production.
Owner:哈药集团中药二厂

Dealkalized endonuclease magnetic molecular imprinting nano-particles as well as preparation method and application thereof

The invention discloses dealkalized endonuclease magnetic molecular imprinting nano-particles as well as a preparation method and application thereof. The preparation method comprises the following steps: modifying the surface of a silicon dioxide-coated magnetic core used as a carrier by avidin which has strong affinity interaction with APE1 and is used as a functional monomer, forming an imprinting layer by taking the APE1 as a template molecule and taking a polymeric material as a monomer and a crosslinking agent, and finally eluting an APE1 template to form an imprinting cavity, thereby obtaining the magnetic molecular imprinting nano-particles. The magnetic molecular imprinting nano-particles prepared according to the method have advantages of strong affinity interaction with a template protein APE1, high selectivity, high interference resistance and high combination and desorption speeds. The preparation technology is simple in process, controllable in reaction and high in imprinting efficiency. The magnetic molecular imprinting nano-particles disclosed by the invention can selectively recognize, separate and enrich low-abundance APE1 in a complicated biological sample, and has a high industrial production value.
Owner:PEKING UNIV

Refined natural spice liquid suitable for electronic cigarette liquid, smoke liquid and preparation method thereof

ActiveCN105029681BLarge specific surface areaGood macroporous network structureTobacco treatmentSolubilityLiquid smoke
The invention discloses natural perfume refining fluid suitable for cigarette fluid of electronic cigarettes and cigarette fluid and a preparation method thereof, and belongs to the technical field of cigarette fluid of electronic cigarettes. Separation and impurity removal are performed on natural perfume such as extract, tincture and absolute oil through a macroporous adsorption resin column chromatography technology, high-boiling-point components such as monosaccharide and disaccharide and macromolecular components such as protein, polysaccharide and pectin in the natural perfume are simultaneously and effectively removed according to the differences of polarities and molecular sizes of all the components in the mixture, the components unfavorable for the smoking mouthfeel of the electronic cigarettes are removed, and the problem that charring flavor is generated due to the fact that the substances are deposited on heating wires is solved; meanwhile, the solubleness of the natural perfume in propylene glycol and glycerinum is improved, therefore, the cigarette fluid of the electronic cigarettes becomes clear and bright, the emission performance of perfume is significantly improved, the sweet greasy feeling is reduced, and the sensory effect is significantly improved.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC

Terpolymer hydrogel and preparation method and purpose thereof

ActiveCN106589241AOvercoming a single deficiencyExcellent enrichment and separation abilityOther chemical processesAlkali metal oxides/hydroxidesEnvironmental resistanceDesorption
The invention relates to a terpolymer hydrogel capable of enriching and separating uranium in aqueous solution and a preparation method thereof. The terpolymer hydrogel takes K2S2O8-NaHSO3 as an initiator, takes acrylonitrile, acrylic acid and beta-cyclodextrin as raw materials, an emulsion polymerisation method is used for preparing a product through a binary grafting copolymerization reaction of acrylonitrile and beta-cyclodextrin, and the functional terpolymer hydrogel acrylonitrile-acrylic acid-beta-cyclodextrin (AN / AA / beta-CD) can be synthesized. The terpolymer hydrogel has the advantages that the raw materials are easily available, the terpolymer hydrogel is a uranium separating agent with good performance, adsorption rate is high, the preparation method is simple and easy to carry out, desorption condition is mild, no massive strong acid as well as poisonous and harmful substances can be discharged during a whole process, no secondary pollutant is generated, and the novel functional terpolymer hydrogel is environmentally friendly, and can be recycled.
Owner:LANZHOU UNIVERSITY

Process for recovering and refining potassium chloride in organic chemical wastewater

The invention discloses a process for recovering and refining potassium chloride in organic chemical wastewater. The process comprises the following specific steps: a potassium chloride aqueous solution enters a standing layering tank, a water layer and an oil layer are separated, the oil layer returns to a production system, the water layer enters a precision filter, effluent water obtained by filtration enters a resin adsorption tower, phenol, chlorobenzene and the like are adsorbed by adsorption resin, effluent water obtained from the resin adsorption tower enters a coagulation sedimentation tank, the pH of the potassium chloride aqueous solution is adjusted to be neutral, the separated supernatant overflows to a supernatant tank, effluent water obtained from the supernatant tank is filtered, the filtered water reaches a metal special resin tower to remove metals, effluent water obtained from the metal resin tower enters a middle water tank, effluent water obtained from the middle water tank is pumped into an MVR evaporation system by using a pump, and finally effluent water obtained from the MVR evaporation system enters a cooling crystallizing tank for cooling crystallization,and a salt obtained by the cooling crystallization is used as the product. Compared with the prior art, the process provided by the invention has the following advantages: organic pollutants and metal ions in the wastewater are efficiently removed by utilizing the resin, the high-quality potassium chloride is recovered, the waste is recycled, the regeneration treatment is convenient, the use period is long, the operation is stable, the operating costs are saved, and the automation degree is high.
Owner:南京简迪环境工程有限公司

A method for separating and purifying pentamethylenediamine

The invention discloses a method for separating and purifying pentamethylenediamine. The pretreated pentamethylenediamine conversion solution is passed through an adsorption column equipped with an adsorption resin. After the adsorption is saturated, water is used as a washing agent to wash impurities, and water is used as a desorbing agent. Desorb the pentamethylenediamine solution to obtain an aqueous solution of pentamethylenediamine, and then directly enter the aqueous solution of pentamethylenediamine into a rectification tower for rectification to obtain pure pentamethylenediamine; wherein, the adsorption resin is based on styrene or acrylate body, divinylbenzene is used as a cross-linking agent to obtain a weakly polar adsorption resin; or, a polar adsorption resin obtained by using an aminating agent to modify the weakly polar adsorption resin with amine groups; the resin Stable physical and chemical properties, insoluble in acid, alkali and organic solvents, not affected by inorganic salts and strong ionic low-molecular compounds; the above-mentioned adsorption resin has an average particle size of 0.4-0.8mm and a water content of 41-47wt%. The average pore diameter is 4.6-6.3nm, the porosity is 30%-40%, and the wet density is 1.12g / cm 3 , with an average specific surface area of ​​786‑862m 2 / g, average pore volume 0.97~1.12cm 3 / g.
Owner:NANJING TECH UNIV

Traditional Chinese medicine for treating common cold and preparing method of traditional Chinese medicine

The invention relates to traditional Chinese medicine for treating common cold and a preparing method of the traditional Chinese medicine. The method includes: taking cornu saigae tataricae, fructus arctii, herba schizonepetae, platycodon grandiflorum, liquorice, honeysuckle, lophantherum gracile, semen sojae praeparatum, menthol and forsythia according to certain weight, decocting cornu saigae tataricae to obtain extract, distilling herba schizonepetae and forsythia with steam to obtain distilled liquid, adding honeysuckle, lophantherum gracile, semen sojae praeparatum, cornu saigae tataricae, liquorice, platycodon grandiflorum and water into the residues of herba schizonepetae and forsythia for decocting, standing, filtering and taking supernate, concentrating to obtain clear paste, dissolving menthol with ethanol, combining dissolved menthol with the extract, the distilled liquid and the clear paste, adding single syrup and preservatives, adding water for adjustment, filtering, performing embedment, and sterilizing to obtain the traditional Chinese medicine. The traditional Chinese medicine is capable of clearing heat and toxin, removing phlegm and cough, and moistening lung and depressing qi, evident in curative effect on symptoms such as fever, cough, sore throat caused by common cold, low in cost, free of side effects, and worthy of widely popularizing.
Owner:NANJING TONGRENTANG PHARM CO LTD

Calculus removing granules as well as preparation method and new application thereof

The invention belongs to the technical field of traditional Chinese medicines and in particular relates to calculus removing granules as well as a preparation method and new application thereof. The granules comprise the following components in parts by weight: 200-300 parts of longtube ground ivy herb, 30-80 parts of plantain seed, 30-80 parts of akebia stem, 40-70 parts of paniculate swallowwort root, 30-70 parts of pyrrosia leaf, 160-200 parts of honeysuckle stem, 160-250 parts of talc, 20-70 parts of herb of lilac pink, 30-80 parts of China jute seed and 60-100 parts of liquorice root. The calculus removing granules can be used for treating chronic cholecystitis. The calculus removing granules have the advantages that longtube ground ivy herb is beneficial to dissolution and removal of renal calculi and urinary calculi and interacts with plantain seed, akebia stem, paniculate swallowwort root, pyrrosia leaf, honeysuckle stem, talc, herb of lilac pink, China jute seed and liquorice root, so that the treatment effects on calculi are obvious; meanwhile, the calculus removing granules have the function of treating chronic cholecystitis.
Owner:NANJING TONGRENTANG PHARM CO LTD

Method for separating wuyiencin from fermentation liquor

The invention relates to a method for separating wuyiencin from fermentation liquor. The method comprises the following steps: 1) removing culture medium solid residues and thalli in the fermentationliquor which contains the wuyiencin to obtain supernate; 2) acquiring impurities in the supernate obtained from step 1) by precipitating through oxalic acid, and then centrifuging to remove precipitates and impurities to obtain a solution; 3) treating the solution obtained from step 2) by macroporous resin, and collecting effluent liquid; 4) carrying out gel chromatography treatment on the effluent liquid collected from step 3), and separately collecting the effluent liquid which flowing out in different time periods; 5) detecting the effluent liquid collected from step 4) by high performanceliquid chromatography, freeze-drying the effluent liquid which has the wuyiencin but does not have miscellaneous peaks to obtain the crude product of the wuyiencin; and 6) preparing and refining the crude product freeze-dried in step 5) by using a liquid phase preparation system or a liquid phase semi-preparation system to obtain high-purity wuyiencin. The method for separating the wuyiencin fromthe fermentation liquor has the advantages of high extracting rate, high wuyiencin extracting purity and the like.
Owner:INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI

Paishi granule, its preparation method and medicinal application

The invention belongs to the technical field of traditional Chinese medicine, and specifically relates to a Paishi granule, a preparation method thereof, and a new application of medicine, which include the following components in parts by weight: 200-300 parts of Lisiana, 30-80 parts of Plantago, 30-80 parts of Tong, 40-70 parts of Xu Changqing, 30-70 parts of Shiwei, 160-200 parts of Lonicerae vine, 160-250 parts of talc, 20-70 parts of Qumai, 30-80 parts of fennel seed and 60-100 parts of licorice , Paishi granule of the present invention can be used for treating chronic cholecystitis. The invention's Lisiana is beneficial to the dissolution and discharge of kidney stones and urolithiasis, and then it is combined with Plantago Seed, Akebia, Xu Changqing, Shiwei, Honeysuckle, Talc, Cornucopia, Fennel Seed and Licorice. Calculus treatment effect is remarkable, at the same time, it has the effect of treating chronic cholecystitis.
Owner:NANJING TONGRENTANG PHARM CO LTD
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