43results about How to "Easy to elute and regenerate" patented technology

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.

A process for preparing forsythiaside A comprises using forsythia shell as raw material, using deionized water and water alcohol as extracting solution, passing through preliminary separation column and refining column, using deionized water and water alcohol as eluent, and then obtaining forsythiaside A after being frozen and dried, the content can reaches 85%-99%. The invention uses cheap material, no toxic and safe solution, and has simple technology, high forsythia usage and low cost, which is suitable to the industrialized production, and the extracting rate is 0.5%-2%.

The long-fiber agglomeration coarse-grained degreaser enables oil droplets to float along the filter layer in time under the lift of air bubbles through a reasonable filter layer structure, achieving the dual goals of coarse-grained and filtered oil removal. The oil remover includes oil removal reactor column (1), water inlet and overflow device (2), modified fiber bundle assembly (3), water outlet and backwash device (4), oil removal column connector ( 5), sampling port (6); the deoiling reactor column (1) is divided into upper and lower parts, which are connected into one by the deoiling column connector (5), and the deoiling reactor column (1) A modified fiber bundle assembly (3) is installed inside, a sampling port (6) is provided on the side of the deoiling reactor cylinder (1), and a water inlet and overflow are provided on the upper part of the deoiling reactor cylinder (1). The flow device (2) is equipped with a water outlet and backwashing device (4) at the lower part of the oil removal reactor column (1); the upper part of the device is fed with water, and the lower part is aerated to realize the agglomeration of oil droplets in the oily wastewater, the coarse to achieve oil-water separation.

The present invention relates to a Nigella sativa Method for separating and extracting phenolic glycosides from seeds: drying Nigella sativa After the seeds are crushed, degrease with petroleum ether, extract with 60-80% ethanol, recover the solvent under reduced pressure, and obtain the extract extract; Eluted to obtain 7 components Fr1-Fr7; 3) The fourth component Fr4 was separated by silica gel column chromatography to obtain 5 components 4-1~4-5; 4) Component 4-3 was separated by gel column Chromatography, silica gel column chromatography separation, obtain 3,5 dihydroxyphenethyl alcohol-3- O - β ‑Pyranoside; Component 4‑2 was separated by reverse phase column chromatography and Sephadex LH‑20 dextran gel column chromatography to obtain broadbactin C. The extraction process of the invention is simple, the product is easy to obtain, the solvent can be recycled, the extraction amount is large, and industrial production is possible.

The invention relates to a method for decolorizing nucleotide enzymatic hydrolysate. The method comprises the following steps of: performing pigment adsorption on the nucleotide enzymatic hydrolysate through hyper-crosslinked resin SX-01; and after adsorption is saturated, and regenerating the hyper-crosslinked resin SX-01 by using a regenerant, wherein the hyper-crosslinked resin SX-01 has the following structure units: the skeleton of the resin is polystyrene, the average grain size is 0.3 to 1 mm, the water content is 32 to 49 percent, the aperture is 1.5 to 4 nm, the most probable aperture is 1.8 nm, the average specific surface area is 950 to 1,800 m<2> / g, and the average pore volume is 0.54 to 0.82 cm<3> / g. By adoption of the method, the decolorization ratio of the enzymatic hydrolysate reaches over 80 percent, the treatment quantity reaches 11 times of bed volume (BV), the loss ratio of four kinds of nucleotides is lower than 5 percent, and the consumption quantity of the regenerant is 5 BV.

The invention discloses an arsenic adsorbing fiber using acrylic fiber as a fundamental frame and a synthesizing method thereof, belonging to the technical field of polymer materials. In the structureof the fiber material, amido existing in a mode of hydrochloride is contained, and the amido can effectively adsorb arsenic radical in the water through an ion exchange reaction. The method for synthesizing the fiber is to lead the acrylic fiber to firstly perform a grafting reaction with a multi-amido compound to introduce amido, and the acrylic fiber reacts with the hydrochloric acid to transform the amido into the hydrochloride, and has simple reacting process and mild condition. The neutral fiber is stable in the air, cannot absorb carbon dioxide and other acid gases, and cannot affect the pH value of the water body when the arsenic adsorbing fiber is used in the water as an adsorbent.

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 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 present invention relates to a Nigella sativa Extracted from the seeds to isolate the compound ethyl‑ α ‑D‑Arabinofuranose Method: Choose Dried Nigella sativa Seeds are used as raw materials, crushed and degreased with petroleum ether, extracted with ethanol at room temperature, dissolved in methanol, mixed with silica gel and loaded, eluted with dichloromethane and methanol to obtain Fr1‑Fr77 components, and then through continuous separation and purification, the pure compound is obtained. The method of the present invention is conducive to better development and utilization Nigella sativa This medicinal plant is conducive to the sustainable utilization of plants; the extraction process of the present invention is simple, and it is easy to obtain ethyl- α ‑D‑arabinofuranose compound monomer, the solvent can be recycled, the extraction amount is large, and it can be produced industrially.

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.