923 results about "Polymeric adsorbent" patented technology

The invention relates to a clean technique for co-producing xylose, xylitol and arabinose from agricultural and forestal waste, belonging to the field of utilization of agricultural and forestal waste. The technique comprises the following steps: pretreating and preprocessing the raw material, and hydrolyzing in a thermophilic digestion mode to prepare a hemicellulose hydrolysate; after centrifugalizing to remove solid residues, carrying out TiO2-loaded activated carbon photocatalysis or ion exchange resin decolorization and detoxification treatment on the hydrolysate; carrying out MVR (mechanical vapor recompression) concentration treatment and gradient-cooling crystallization to obtain a xylose product and a xylose mother solution; fermenting L-arabinose unconverted xylitol fermentationhigh-yield strain xylitol by using the xylose mother solution as the medium to produce the xylitol; centrifugalizing to remove thalli, and carrying out decolorization and desalting treatment by membrane-process or resin adsorption; separating by using a simulated moving bed or chromatographic separation technology to obtain a xylitol phase and an L-arabinose phase; and carrying out MVR or vacuum concentration treatment on the two phases, and crystallizing in a gradient programmed cooling mode to respectively obtaining a xylitol product and an L-arabinose product, wherein the two mother solutions can be recycled.

The invention discloses a preparing method for a bamboo leaves flavone extractive, which includes the following steps: breeds with high flavone content which are selected form 30 kinds of bamboo leaves can be taken as the production materials trough HPLC method; the selected bamboo leaves are dried at low temperature and lucifuge and smashed; and the C1-C3 is used for extracting; the lixivium is filtered and condensed in vacuum so as to obtain bamboo leaves gross extractive; and the gross extractive is purified through centrifugalizing, ceramic membrane, ultrafiltration membrane, nanofiltration membrane so as to obtain the bamboo leaves processed liquid; and the bamboo leaves processed liquid is separated and purified by certain size polymeric adsorbent resin, and is cooled to dry in vacuum or to dry with sprayer, so as to obtain the bamboo leaves flavone extractive with 40% to 65% of the flavone content.

The invention relates to a method for extracting anthocyanin from a cowberry. The method comprises the following steps: taking cowberry fruits, crushing the cowberry fruits, and squeezing the fruits into juice; centrifugating the juice to obtain fruit residues and fruit juice respectively; controlling the temperature of the operation process to less than or equal to 60 DEG C; soaking the obtained fruit residues in a 1 to 10 percent acid-water solution at an operation temperature of between 30 and 50 DEG C; soaking, stirring and extracting the fruit residues for 2 to 3 times, and soaking and stirring the fruit residues for 1.5 to 2 hours every time to obtain an extracting solution; mixing the extracting solution finally obtained and the fruit juice to form a mixed liquor, centrifugating the mixed liquor at a high speed, taking a supernate to carry out ultrafiltration by inorganic film ultrafiltration equipment to obtain a film filtering liquid; purifying resin; controlling the temperature of the operation process to less than or equal to 60 DEG C; adsorbing the film filtering liquid finally obtained to saturate by the resin; washing the resin adsorbed to saturate by water; removing impurities from the resin until washing water shows colorless; desorbing the macroporous absorbent resin by 30 to 50 percent ethanol or methanol, and collecting an effluent liquid; and concentrating and drying the effluent liquid to obtain the anthocyanin.

The invention discloses a method for extracting stevioside from fresh stevia rebaudiana leaves, which comprises: crushing fresh stevia rebaudiana leaves with homogenizing crushing equipment under a condition of water, performing pressure filtration in continuous automatic discharge filtering equipment, subjecting the filtrate to flocculation by mixed flocculating agent; and absorbing by resin, analyzing, desalting and decolorizing by resin, concentrating and spray drying to obtain the stevioside product. In the invention, time and working procedures are saved, a long-distance transport process is avoided, raw material cost is lowered, discharge of waste water is reduced greatly, and clean production can be realized basically.

The invention discloses a process method for synchronously producing pueraria starch and pueraria flavonoid. The process method is characterized by comprising the following steps of: adding water to clean a fresh pueraria raw material, crushing the fresh pueraria raw material after cleaning, and adding water to grind the raw material into thick liquid, wherein the ratio of liquid to the raw material is 1:10; screening powder to remove residues by adopting a filter method to obtain pueraria starch slurry and pueraria residues mainly comprising fibers respectively, and drying the pueraria residues for later use; performing centrifugal separation on the pueraria starch slurry to remove protein and separate waste water, and collecting the waste water for later use; performing centrifugal dewatering and drying on the starch thick slurry after removing the protein and the waste water through separation to obtain the pueraria starch; soaking the pueraria residues obtained by the step (2) in ethanol, and performing reflux extraction, and condensing the extracting solution to obtain pueraria crude total flavonoid; standing the waste water obtained by the step (3) for deposition, taking supernatant fluid, and performing column chromatography through macro-porous polymeric adsorbent to adsorb the flavonoid; eluting the flavonoid through a resin column by using ethanol, and concentrating the eluant to obtain the pueraria crude total flavonoid.

The invention discloses a coking wastewater comprehensive treatment method comprising the following steps of: pre-treatment, biochemical treatment and deep treatment. The deep treatment step comprises sequential steps of filtering, ultra-filtering, carrying out resin adsorption, re-filtering, and carrying out reverse osmosis. With the adoption of a coking wastewater comprehensive treatment system of the coking wastewater comprehensive treatment method, the pre-treatment step adopts a de-oiling pond, an adjusting pond and an air floating pond, which are connected in sequence; the biochemical treatment step adopts a primary aeration pond, a primary settling pond, an oxygen-poor pond, an aerobic pond and a secondary settling pond, which are connected in sequence; and the deep treatment step adopts a multi-medium filter, an ultra-filtering device, a resin adsorption column and a reverse osmosis device. The coking wastewater comprehensive treatment method has the beneficial effects that the method is stable to operate and has a simple process and good treating effects.

The invention provides a high-hydrophobicity microporous polymeric adsorbent which is polymerized and crossly linked by (1) styrene, (2) p-methyl styrene, 4-tert-butylstyrene, 4-isobutyl styrene or a mixture of the p-methyl styrene, the 4-tert-butylstyrene and the 4-isobutyl styrene according to an arbitrary proportion and (3) divinyl benzene. The compositions by weight portion of the polymeric adsorbent are: 30 to 70 portions of (1) the styrene, 20 to 60 portions of (2) the p-methyl styrene, the 4-tert-butylstyrene, the 4-isobutyl styrene or the mixture of the p-methyl styrene, the 4-tert-butylstyrene and the 4-isobutyl styrene according to the arbitrary proportion, and 2.5 to 10 portions of (3) the divinyl benene; the specific surface area of the polymeric adsorbent is more than or equal to 820m2/g; the pore volume of the polymeric adsorbent is more than or equal to 0.5cm3/g; the microporosity of the polymeric adsorbent is more than or equal to 50 percent; the pore diameter of the polymeric adsorbent is concentrated between 1.5 and 2.2nm; and a wrapping angle between the polymeric adsorbent and water is between 130 and 149 degrees. The high-hydrophobicity microporous polymeric adsorbent can be applied to treatment and recycling of organic waste gas. The invention discloses a method for preparing the high-hydrophobicity microporous polymeric adsorbent.

The invention relates to an environment functional composite material based on inorganic functional agent of nano-particles. The invention has the structure that: (1) the composite supporter is ion-exchange and polymeric adsorbent with a nano-hole structure; (2) the internal surface of a supporter is coated with an inorganic functional agent of nano-particles. The apparent density of the environment functional composite material generally is 0.70-1.20 g/ml, and weight percent content of the inorganic functional agent is 1-40 percent, and the particle size generally is less than the hole diameter of the supporter, about 0.5-80mm, and the adsorbent particle size is 0.5-1.5mm, and with the particle size, the high pressure head loss problem caused by applying inorganic functional agent of fine particles in the flow pattern system can be overcame. The material accomplishes the stability of inorganic functional agent of nano-particles, which greatly improve the use efficiency of the inorganic functional agent, and furthermore provides a technical support for realizing deep purification and safety control of numerous trace pollutants in environment.

The invention provides a method for adsorbing glycerols contained in wastewater by using a resin treated by boric acid. The method comprises the following steps: using a macroporous anion resin to form a boric acid ion resin through boric acid treatment; placing the boric acid ion resin in a wastewater treatment device containing the glycerols; taking out the boric acid ion resin adsorbed with the glycerols when the glycerol content in outlet water of the wastewater treatment device reaches a set value; eluting a boric acid and glycerol complex adsorbed to the boric acid ion resin through acid and alkali treatment; and then continuing to use the boric acid ion resin, wherein the specific steps are as follows: (1), pretreatment of the adsorbing resin, (2), modification of the adsorbing resin, (3), adsorption of the glycerols in the wastewater, and (4), desorption of the boric acid and glycerol complex adsorbed to the boric acid ion resin; and the treated resin can be recycled. On the basis of a principle that the boric acid can react with the glycerols, the invention provides the novel method for adsorbing the glycerols in the wastewater; therefore, the wastewater containing the glycerols can be effectively treated and purposes of saving resources and protecting the environment are achieved.

The invention relates to a method for extracting anthocyanin from a cowberry. The method comprises the following steps: 1, crushing the cowberry, 2, extracting the cowberry, 3, filtering the obtained material, and 4, purifying resin: I) controlling the temperature of the operation process to less than or equal to 60 DEG C; II) adsorbing a film filtering liquid finally obtained in step 3 to saturate by resin; III) washing the resin adsorbed to saturate by water; and removing impurities from the resin until washing water shows colorless; IV) desorbing the macroporous absorbent resin by 30 to 50 percent ethanol or methanol, and collecting an effluent liquid; and V) concentrating and drying the effluent liquid to obtain the anthocyanin. The method has the advantages of easy operation, low cost and high extraction content.

The invention discloses a method for extracting a maslinic acid and oleanolic acid containing mixture from olea europaea L. pomace. The method comprises the following steps of: extracting an extract from the olea europaea L. pomace in an 80-95wt% (weight percent) ethanol aqueous solution, concentrating the extract, redissolving the extract in a 20-70wt% ethanol aqueous solution, adsorbing by using a macroporous adsorption resin, removing water-soluble impurities by using a water-washing resin column, desorbing by using a desorbing solution, mixing the desorbing solution, recovering the desorbing solution, and drying to obtain a maslinic acid and oleanolic acid containing extract. The mixture extracted from the olea europaea L. pomace contains more than 30% of maslinic acid and more than 23% of oleanolic acid.

The invention belongs to the technical field of medicaments, and provides a method for preparing total triterpene of Chinese medicament garden burnet root. The total triterpene is mainly obtained by performing reflux extraction by 70 percent ethanol, absorbing by a macroporous absorbent resin, using water to wash off impurities, using ethanol solution for elution, then decolorizing an eluent by daiamid powder, using the ethanol solution for elution, and recovering the ethanol through pressure reduction. The total triterpene mainly contains triterpenic acid active components such as arjunic acid, 1beta-euscaphic acid, euscaphic acid, tormentic acid and the like, and triterpenoid saponin active components such as sanguisorbin I, sanguisorbin II, sanguisorbin III, niga-ichigoside, kaji-ichigoside F1 and the like. Experimental results show that the total triterpene has remarkable anti-inflammatory and analgesic effects. The total triterpene has definite action substance basis and action mechanism as well as simple preparation technology, is suitable for industrialized production, can be taken as medicinal raw materials for treating inflammatory diseases such as burn and scald, rectitis, ulcerative colitis, pyelonephritis and the like, and is prepared into clinically acceptable dosage forms such as tablets, capsules, granules or compound preparations according to the prior process.

The invention discloses a classification extraction method for fulvic acid subfractions in water. The classification extraction method comprises the following steps that a, a water sample is acidized and filtered; b, resin adsorption is carried out on water fulvic acid; c, classification leaching is carried out on the fulvic acid subfractions; d, the fulvic acid subfractions are purified; e, the water fulvic acid subfractions are desalted and cured. In this way, a fulvic acid solution can be extracted from the water, and after the fulvic acid subfractions are classified and cured based on the resin separation technology, finally the classified solid fulvic acid subfractions are obtained.