42results about How to "Easy to elute and regenerate" patented technology

The invention discloses a microporous aluminum-salt lithium adsorbent, a preparation method therefor, filler containing the microporous aluminum-salt lithium adsorbent and a lithium ion enriching method. The microporous aluminum-salt lithium adsorbent disclosed by the invention has the molecular formula of LiCl.aAl(OH)3.bH2O and has micropores, of which the average pore size is smaller than 2nm, wherein a is greater than 1 and smaller than 3, and b is greater than 0.5 and smaller than 2. The preparation method disclosed by the invention is simple, and the obtained adsorbent is large in lithium ion adsorption capacity, high in selectivity, simple in eluting regeneration and long in cycle life and can be applied to the separation and extraction of lithium from lithium-containing saline lake brine, salt-field concentrated lithium-containing senescent brine, lithium-containing medicinal wastewater and a lithium-containing solution with the mineralization degree lower than 50g/L.

The mulberry leaf flavone extracting process adopts mulberry leaf powder material, alcohol and water as extracting solvent and eluant and macroporous resin as separating material. The extract has mulberry leaf flavone content over 50 %. The present invention has the advantages of non-toxic cheap recoverable solvent, no environmental pollution, great extracted amount, capacity of industrial production and high extracting efficiency.

The invention provides modified styrene adsorption resin, a preparation method of the modified styrene adsorption resin and application of the modified styrene adsorption resin to refining of lignocellulose hydrolysate. The preparation method of the modified styrene adsorption resin comprises the following steps: sequentially adding an acrylate monomer, a styrene monomer, a cross-linking agent, aninitiating agent a pore-forming agent to an aqueous solution containing a dispersing agent, and performing suspension polymerization reaction to obtain precursor resin; and performing Friedel-Craftsreaction on the precursor resin under the action of Lewis acid as a catalyst to obtain the modified styrene adsorption resin. By modifying the acrylate unit in the styrene adsorption resin, the acrylate unit contains an ester group which can form intermolecular hydrogen bonding with water molecules, thereby greatly improving the hydrophilicity of the modified styrene adsorption resin and being favorable for adsorbing hydrophilic fermentation inhibitors in the lignocellulose hydrolysate.

The invention provides a method for preparing an arsenic adsorbent. The arsenic adsorbent has zirconium oxide of nano-pore structure. The material can effectively treat arsenate and arsenite in the waste water, and can be recycled after waste water treatment. Another objective of the invention is to provide a method for treating waste water containing arsenate or arsenite ions by the arsenic adsorbent prepared by the method. The method contains a 'regeneration' step, so that the arsenic adsorbent can be reused cyclically.

The invention discloses a method for separating iron and zinc in iron-containing waste acid. The method comprises the following steps: S1, pretreating to remove suspended matters and impurities in theiron-containing waste acid; S2, carrying out water washing activation treatment on a 1 # resin and a 2 # resin; S3, carrying out column filing of the 1 # resin column and the 2 # resin column and connection in series, enabling the iron-containing waste acid pretreated in the step S1 sequentially flowing through a 1 # resin column and a 2 # resin column, so that zinc ions are adsorbed by resin, and a ferrous acid solution is collected at a liquid outlet position of the resin columns; and S4, eluting the zinc ions adsorbed by the 1 # resin column and the 2 # resin column with running water to obtain a low-acidity zinc chloride solution. Zinc ions in the waste acid are adsorbed by the activated amphoteric resins; the adsorption columns are washed with water to obtain the low-acidity zinc chloride solution through recovery; meanwhile, a solution obtained after adsorption is a recyclable ferrous acid solution, and can be used for preparing a water purifying agent after being oxidized; thetechnological process is simple, the resins are convenient to elute and regenerate, the usable period is long, no secondary is generated in the process, and separation and resource utilization of ironand zinc elements in the iron-containing waste acid are realized to the greatest extent.

The invention provides a method for preparing high-purity scutellarin, which solves the problem that the prior preparation method is high in pollution, low in yield and high in cost. The method comprises the following: (1) a dissolution step, which is to take commercially available breviscapinun of which the scutellarin content in percentage by weight is 85 percent, dissolve the breviscapinun in alkaline water which is 5 to 10 times the weight of the breviscapinun and has a pH of 7 to 9 and filter the obtained product, and (2) a separation step, which is to use chromatography material to perform column chromatography on filtrate of which the sample loading amount is 1:1-3, elute the obtained product with elution water 8 to 10 times the volume of a column, collect the obtained product part by part, combine eluent of which the purity is greater than weight percentage by 98 percent, regulate pH to 2, precipitate, stand and filter the obtained product, wash precipitate with deionized water to be neutral, dry the obtained product and obtain the high-purity scutellarin.

The invention discloses a preparation method of an apple flower effective part, wherein the preparation method comprises the following steps: crushing apple flowers, carrying out heating extraction with ethanol, concentrating the extract liquid, then dispersing in water, and successively extracting with petroleum ether, ethyl acetate and n-butanol, to obtain an ethyl acetate extract. The inventionalso discloses a method for extracting kaempferol glucoside from the apple flower effective part; the apple flower effective part is treated by a silica gel column, a gel column, a preparative high performance liquid phase and other separation methods. The invention provides the method for extracting and separating kaempferol glucoside from the apple flowers, better development and utilization ofthe medicinal plant of the apple flowers are facilitated, kaempferol glucoside is studied deeply, the time and the labor are saved, and the yield of the sample can be greatly improved.

The invention relates to a method for extracting and separating a compound ethyl-alpha-D-furan arabinose from a Nigella sativa seed, which comprises the following steps: selecting a dry Nigella sativaseed as a raw material, pulverizing, degreasing with petroleum ether, extracting with ethanol at room temperature, adding methanol into the extract, dissolving, stirring with silica gel, loading, eluting with dichloromethane and methanol to obtain seven components Fr1-Fr7, and continuously separating and purifying to obtain a compound pure product. The method disclosed by the invention is beneficial to better development and utilization of the medicinal plant, namely the Nigella sativa, and is beneficial to sustainable utilization of the plant; the extraction process is simple, the ethyl-alpha-D-furan arabinose compound monomer is easy to obtain, the solvent can be recycled, the extraction amount is large, and industrial production can be achieved.

The invention relates to a method for extracting ursolic acid from vegetable Dian clove. The method comprises the following steps that: (1) the dried Dian clove is picked up, crushed and undergoes repeated cold soaking by 10L of 95 percent ethanol for three times, seven days for each time, and the ethanol is filtered, decompressed and reclaimed to obtain a concentrated extractive; (2) the obtained ethanol extractive is tested; and (3) the extract obtained from the step(2) is subjected to Sephadex LH-20 gel column chromatography and is separated to obtain the finished product by taking methanol as an eluant and compare with the standard product. The separation materials used by the method include macroporous adsorptive resin and gel, so that the separation materials have stable physical-chemical properties, are not dissolved in acids, alkalis and organic dissolvants, have good selectivity on organic matters, and are not affected by existence of organic salts and strong-ion low-molecule compounds; and the separation materials are easily eluted and regenerated, thereby facilitating the cyclic utilization.

The invention relates to a method for separating and extracting chain ester compounds from Nigella sativa seeds, which comprises the steps of 1) pulverizing the dried Nigella sativa seeds, degreasingwith petroleum ether, extracting with 60-80% ethanol, and recovering the solvent under reduced pressure to obtain an extract; 2) dissolving the extract with methanol, mixing the extract with a silicagel column, and carrying out gradient elution with dichloromethane-methanol to obtain seven components Fr1-Fr7; 3) performing normal pressure silica gel column chromatography on the component Fr1 to obtain six components Fr1-1 to Fr1-6; and 4) performing gel column chromatography and silica gel column chromatography separation on the component Fr1-4 to obtain 9-decenoic acid-12-hydroxy ethyl ester, and performing gel column chromatography, silica gel column chromatography and reversed phase chromatography separation on the component Fr1-2 to obtain 9-undecylenic acid-1-(3-pentyloxy silane)-ethyl ester. The method has the advantages of simple extraction process, accessible product, recyclable solvent and large extraction amount, and can implement industrial production.

The invention belongs to the technical field of wastewater treatment and relates to adsorbing stuffing for treating aniline-containing wastewater and a preparation method and an application thereof. In particular, the preparation comprises the following steps: 1) preparing a mixed solution of a surfactant and water as an aqueous phase; 2) preparing a mixed solution of acrylate, styrene and amino styrene as an oil phase; 3) preparing an O/W emulsion; and 4) performing free radical emulsion polymerization. The preparation method is simple and feasible. The grain size of the adsorbing stuffing prepared by the method is 200-2000[mu]m, and the adsorbing stuffing can effectively adsorb and enrich aniline in water, is easily eluted and generated and is suitable for industrial treatment of aniline-containing wastewater.

The invention discloses a method for extracting dictyota dichotoma lactone, which comprises steps of regarding dictyota dichotoma as a raw material, regarding 70%-90 % of alcohol as an extraction solvent, performing ultrasound extraction or reflux extraction for 2-4 times, performing filtration, filtrate combination and concentration, adding macroporous resin columns for absorption, using 50%-80% of alcohol to elute effective constituents, concentrating eluate, feeding the concentrated solution to a high-pressure silica gel column, using hexane-acetone for elution, enabling the eluate to subject to concentration and crystallization, enabling hexane to flow back and dissolve the crystal, performing recrystallization and obtaining the dictyota dichotoma lactone. The dictyota dichotoma lactone produced by the method is high in extraction rate, simple in process and specific.

The invention belongs to the technical field of plant extraction, and particularly relates to an extraction and separation method of nicotiflorin in rose flower. The method comprises the following steps: 1) taking dried rose flowers, pulverizing, degreasing the material with petroleum ether at room temperature, then adding ethanol to extract by cold soaking, and extracting an extract to obtain a total ethanol extract; 2) dissolving the total ethanol extract by methanol and mixing the materials, eluting a mixture through water, 20% ethanol, and 40% ethanol in order through a D101 macroporous resin column, and then drying a solvent to obtain a 40% ethanol elution component; 3) performing gradient elution on the 40% ethanol elution component with dichloromethane-methanol by normal pressure silica gel column chromatography, and combining the materials by silica gel thin layer chromatography to obtain 12 components which are marked as component Fr. 4-1 to Fr. 4-12 according to the polarityof the obtained components from small to large; and 4) obtaining the eleventh component Fr. 4-11 by gel column chromatography and high performance liquid chromatography. The method of the invention can quickly and effectively extract and isolate the nicotiflorin contained in the rose flower, and the extraction yield of the nicotiflorin is high.