40 results about "Phenol adsorption" patented technology

The invention discloses a process and device for treating phenol-containing wastewater. The process comprises the steps: carrying out oil removal by filtration, extraction and separation, phenol adsorption and advanced oxidation, delivering adsorbed wastewater into a first fixed bed reactor, adding 0.05-0.2% (volume) of hydrogen peroxide, and carrying out an oxidation reaction under the action ofa solid catalyst bed layer; delivering the wastewater subjected to advanced oxidation into a second fixed bed reactor, adding 0.002-0.01% (volume ratio) of ozone, and carrying out a catalytic oxidation reaction under the action of the solid catalyst bed layer; and sequentially carrying out evaporation, cooling crystallization, centrifugal separation and desalting treatment on the wastewater subjected to catalytic oxidation to obtain an industrial-grade sodium sulfate product. By using the process, the wastewater treatment efficiency is increased, the industrial-grade sodium sulfate product isobtained, the use amounts of adsorption resin, hydrogen peroxide, sodium hydroxide and the like are reduced, and the environment pollution is reduced.

The invention provides a preparation method of phenol adsorbent resin. The preparation method comprises the following steps of: with small-granularity waste polymerization white spheres of macroporous ion exchange resin within the granularity range of 45-60 meshes adopted, extracting to obtain a porogenic agent, stoving, carrying out chloromethylation according to a macroporous anion resin standard process until chloride content is 15-25%, washing chloride spheres with water until no chloride ion exist after reaction is finished, stoving, then carrying out Friedel-Crafts reaction and then crosslinking, and then carrying out surface fluorination to generate the adsorbent resin with high specific surface area. The phenol adsorbent resin obtained by the preparation method provided by the invention has high adsorption capacity, the phenol adsorption capacity is more than 100mg per ml of the resin, and the phenol adsorbent resin has high strength, is difficult to break and has short regeneration time.

The invention belongs to the technical field of regeneration of activated carbon and in particular relates to technology and equipment for electric heating regeneration of activated carbon. The invention is characterized in that granular wet carbon is dehydrated, dried and put into an electric heating regeneration furnace of activated carbon, the carbon granules orderly pass through a furnace chamber between graphite electrodes, the activated electric arc enables the carbon granules to be conducted and heated, the temperature of the carbon granules in the furnace chamber gradually rises from top to bottom, the activation temperature of the carbon granules is from 650 DEG C to 850 DEG C, the carbon granules activated by electric heating are continuously discharged through a discharge hole at the bottom of the furnace, and the discharged carbon granules are cooled slowly in an oxygen-isolated nitrogen environment. Compared with the traditional technology, the invention has the advantages of low energy consumption, small wastage and accurate temperature control and greatly improves the production efficiency and the energy utilization. The iodine value, the phenol adsorption capacity, the specific surface area and other indexes of the regenerated activated carbon which is produced by the technology are all relatively stable, wherein the reversion rate of the iodine value is 98 percent of new carbon.

The invention discloses an immobilized cationized beta-cyclodextrin chloromethylated polystyrene polymer and a method for adsorbing and recovering phenols in industrial wastewater. According to the method, chloromethylated polystyrene is immobilized with cationized cyclodextrin to form the polymer; the polymer is adopted as an adsorbent; phenols substances in the industrial water are selectively adsorbed in the polymer; regeneration and reuse of an adsorption material can be realized through simple desorption treatment; the adsorbent is utilized for adsorption treatment on the industrial wastewater containing such phenolic hydroxyl phenols as cresol, phenol, chlophenol and salicylic acid, and can adsorb 96 mg / g of cresol, 140 mg / g of phenol, 250 mg / g of chlophenol and 170 mg / g of salicylic acid to the maximum extent; adsorption equilibrium can be realized within 2 hours; test results show that the phenols adsorption capacity of the absorbent is obviously higher than the maximum phenols adsorption capacities of such commercial adsorption materials as polyamide, DM 301 and S-8. The polymer and the method have the advantages that the preparation process is simple, the reuse can be realized, the cost is low, the operation is simple, the adsorption efficiency is high, energy conservation and environment protection are realized, phenols can be recovered, and the like.

The invention discloses a phenol adsorption enhanced reforming hydrogen production method. According to the method, a Ni-Ca-Al-O dual-functional catalyst with the catalysis and CO2 adsorption functions is filled in a fixed bed reactor; under the condition of using inert gas as carrier gas, a phenol solution with the concentration being 0.0399 to 0.1594g / ml is introduced at the weight hourly spacevelocity of 0.432 to 2.592h<-1>; the reaction temperature is 400 to 700 DEG C; after the CO2 adsorption saturation, catalyst regeneration is performed for 0.1 to 3h at 500 to 1000 DEG C in the inert atmosphere. The hydrogen purity obtained by the method can reach 98 percent or higher; the phenol conversion rate reaches 99 percent or higher; the catalysis and adsorption stability is high.

The invention relates to a preparation method of a zirconium phosphate intercalation material, which comprises the following steps: adding alpha-zirconium phosphate into a 1-30 wt.% of aliphatic amine or aromatic amine aqueous solution with the solid-to-liquid ratio of the alpha-zirconium phosphate and the aliphatic amine or aromatic amine aqueous solution of 1: 40-1:100 by the mass-to-volume ratio, stirring and reacting for 1 to 4 hours, washing by deionized water and drying to obtain the aliphatic amine or aromatic amine intercalation material, wherein the aliphatic amine is C4 to C8 aliphatic amine. Compared with the prior art, the invention has the advantages that phenol adsorption synthetic material is readily available, the synthetic route is simple, the phenol adsorption rate is high, and adsorption equilibrium can be reached in 20 minutes.

The present invention relates to a microorganism regeneration method for treating granular active carbon achieving the saturated nonyl phenol adsorption state, and belongs to the field of environmental engineering. The method comprises: 1, adding pre-treated granular active carbon to an aqueous solution with a nonyl phenol concentration of 4 mg / L, and adsorbing for 12 h to make the active carbon achieve adsorption saturation, wherein the active carbon mass concentration is 0.1 g / L; 2, filtering out the active carbon achieving the adsorption saturation in the step 1, weighing 0.05 g of the active carbon, adding to a carbon source-absent inorganic culture liquid, adding a microorganism solution with the amount of 10% of the mass of the active carbon and for degrading the nonyl phenol, and regenerating for 24 h, wherein the microorganism belongs to Pseudomonadaceae, the temperature is controlled at about 25 DEG C, and the pH value of the system is 5.0-8.0; 3, filtering out the active carbon mixing liquid in the step 2, and washing the active carbon with di-distilled water; and 4, dewastering and drying the washed active carbon so as to obtain the regenerated active carbon. The method of the present invention has characteristics of low cost, no pollution, simple operation, and good active carbon regeneration effect achieving, and is suitable for degradation of low-content and large-harm organic matters in water.

The invention discloses a preparation method and application of a polyvinylamine functional magnetic carbon-based nano adsorbing agent. The preparation method is specifically characterized in that a chemical coprecipitation method is used to deposit magnetic particles to the surface of graphene oxide-carbon nanotubes, and amidation is used to modify high-cation polyvinylamine (PVAm) to the magnetic (graphene oxide-carbon nanotubes) hybrid body. The prepared adsorbing agent has the advantages that the adsorbing agent has large specific surface area and rich adsorption sites, has a large numberof amino functional groups and can effectively combine with phenol through a hydrophobic effect, pi-pi keys, electrostatic attraction and hydrogen bonding so as to effectively remove phenol in wastewater, and the maximum phenol adsorption quantity, calculated through a Langmuir model, of the adsorbing agent is 224.21mg / g; the adsorbing agent can be reused through simple enrichment desorption, andindustrial wastewater treatment cost is lowered.

The invention discloses a detection method of allergens in chocolate. The detection method comprises the steps of S1, firstly adsorbing carbohydrate and phenol in a chocolate matrix to achieve quick purification of allergic protein in the chocolate; S2, establishing a chromatography-mass spectrometry method that multiple allergens are detected simultaneously; S3, establishing a protein database, collecting qualitative and quantitative data of samples with different sources, and obtaining a statistics result; in the step S1, bonding phenylboronic acid groups outside magnetic particles, and achieving adsorption of carbohydrate and phenolic substances; in the step S2, through the combination of electrostatic field orbitrap high-resolution mass spectrometry and tandem quadrupole mass spectrometry system, establishing the chromatography-mass spectrometry method that the multiple allergens are detected simultaneously, wherein the allergens comprise milk, soybeans, peanuts, hazels, walnuts, almonds, cashews and pistachios. According to the detection method of the allergens in the chocolate, allergen protein in the chocolate matrix can be quickly purified, and thus quick screening and detection of the multiple allergens in the chocolate are achieved with high sensitivity and high flux.

The invention discloses a preparation method of an activated carbon for cigarettes and a product of the activated carbon for cigarettes and an application. According to the method, a jute rod is used as a raw material, the jute rod is carbonized and then pulverized into granules, under water vapor with flow rate of 450-480 g / h, after activation for 1-3 hours at 800-900 DEG C, the activated carbon for cigarettes is obtained after discharging, sealing and cooling. As the result shows, the activation rate of the activated carbon for the cigarettes obtained by the method can reach 47%, specific surface area is 996.38 m<2> / g, strength is 92.7f%, apparent density is 0.32g / Ml, ash content is 4.31, and water content is 5.12%, pH value is 7.67, which all reach or exceed national tobacco industry standard for the activated carbon for cigarettes; besides, the activated carbon has high iodine adsorption value (1184mg / g), methylene blue adsorption value (195.88 mg / g) and phenol adsorption value (202.04mg / g), and excellent pore structure, and is especially beneficial for removal of harmful gases in small molecules of the cigarettes.

The invention belongs to the technical field of biomass, and specifically relates to inorganic-material-hybrid porous biomass microspheres used for treating heavy metal sewage and a preparation methodof the porous biomass microspheres. The inorganic-material-hybrid porous biomass microspheres are made by compounding modified sorghum stems and modified hectorite. The prepared composite material can adsorb heavy metal ions and organic pollutants, such as aniline and phenol, in sewage, and has a phenol adsorption removal rate as high as 99%.

An apparatus for recovering petroleum and phenols from oilfield produced wastewater is formed by a wastewater equalization pool, a demulsification pool, a gravity settling pool or a centrifuge or an air floatation device, a petroleum storage tank, a wastewater collecting pool, a phenol adsorption tower, an eluant storage tank, a phenol-containing eluate storage tank, an adsorption tower dephenolized wastewater storage tank, a phenol extraction tank extractant storage tank, a distillation tower and a phenol storage tank. A recovery method adopting the apparatus comprises the following steps: 1, adding an acid to the oilfield produced wastewater to adjust the pH value to 2-6 in order to demulsify; 2, carrying out gravity settlement, centrifuge or air floatation separation on the demulsified oilfield produced wastewater to obtain recovered petroleum and deoiled or dewaxed wastewater; and 3, allowing the deoiled or dewaxed wastewater to go through the adsorption tower and to adsorb phenols in the wastewater, and adding a 5-10% sodium hydroxide solution or alcohol after absorption is saturated to elute in order to regenerate an adsorbent and recover phenols. Influences of phenol wastewater treatment on biochemical treatment are eliminated through recovering petroleum and phenols from the oilfield produced wastewater, and the apparatus and the method simultaneously realize treatment of pollution of the oilfield produced wastewater and recycling of resources.

The invention discloses an adsorbing material with beta-CD (Cyclodextrin) coupled on surface of PUF (Polyurethane Foam) and a preparation method and application thereof. The method is characterized by taking the PUF as a base material, exposing amino groups on the surface of the PUF by using a hydrochloric acid boiling method, coupling beta-CD molecules to the surface of the PUF by carrying out heating reflux reaction in a beta-CD water solution through a molecular coupling technology of an aldehyde compound, and carrying out heat soaking, thus obtaining the adsorbing material with the beta-CD coupled on the surface of the PUF. The adsorbing material disclosed by the invention has better hydrophily, and the water absorption rate can excess 2000 percent; the beta-CD solid carrier amount and the water absorption rate of the adsorbing material can be regulated in a large range, the adsorbing material has stronger adsorption ability on phenol in water, the adsorbed phenol can be parsed and regenerated by using an ethanol solution, the regenerated adsorbing material can be continuously used for phenol adsorption, and the adsorption ability is not obviously reduced after three times of adsorption-parse circulation.

The invention relates to a technology for pretreating wastewater containing phenols through a resin adsorption method. The technology comprises the following steps that 1, wastewater containing phenols is fed into a pre-stage raw wastewater tank through a filter; 2, the wastewater entering the pre-stage raw wastewater tank then passes through an adsorption circulating pump to be sequentially and continuously fed into a resin adsorption tower, and the control flow is 1-2 m<3> / h; the wastewater containing phenols entering the resin adsorption tower is continuously adsorbed through two stages bya resin column in the adsorption tower, and the phenols in the wastewater are adsorbed to the resin column; 3, after resin adsorption, the pretreated wastewater passes through the wastewater pump to be fed into a sludge treatment tank at the flow rate being 1-3 m<3> / h; 4, the resin column in the resin adsorption tower needs to be activated every time 10 tons of wastewater is treated. The technology has the advantages that the phenols in the phenol wastewater is adsorbed through the resin adsorption method, and according to the treatment method, waste recycling can be achieved while the wastewater is effectively treated.

The invention belongs to the technical field of environment friendliness and in particular relates to a persulfate composite solution for regeneration of phenol adsorption saturated activated carbon and a preparation method and application thereof. The preparation method comprises the following steps: adding a proper amount of sodium bicarbonate and sodium hydroxide into the persulfate stock solution to obtain a persulfate composite solution; and activating by using a ferrous chloride solution, wherein the persulfate composite solution generates sulfate ion (S2O82-) and high-strength sulfate radical (.SO42-) through molecular oxidation or chemical activation, and the activated product can rapidly decompose the phenol adsorption saturated activated carbon. The prepared persulfate composite solution is used for regenerating activated carbon for drinking water plants or industrial enterprises where the activated carbon is used for purifying water, and the persulfate composite solution is low in cost and simple in process, hardly causes pollution and has wide economic benefits and application prospects.

The invention discloses a resourceful treatment method of high-concentration phenol-containing wastewater. The resourceful treatment method comprises the steps of refining and impurity removal, hydrogenation reduction, resin adsorption, adsorption effluent treatment and the like. Non-ionic polyacrylamide and diatomite powder are adopted for impurity removal, a catalyst used in the hydrogenation reduction process is a palladium-carbon catalyst, macroporous adsorption resin is adopted for phenol adsorption in the resin adsorption process, resin regeneration liquid is adopted for phenol recovery,and mother liquid can be recycled. The phenol in the sewage is recovered through hydrogenation reduction and resin adsorption, the yield of the obtained phenol product is high, the content is 99% orabove, and the phenol product can be directly used as a pesticide synthesis production raw material. A methanol aqueous solution is used as a resin regeneration solution, the methanol recovery rate reaches 98%, all eluents in the regeneration process can be recycled, and no wastewater or waste residue is generated. According to the method, phenol in the sewage is recycled, meanwhile, no secondarypollution is caused, the effluent index is stable, biochemistry is not inhibited, and a harmless and resourceful treatment is carried out on the high-concentration phenol-containing wastewater.

The invention discloses a preparation method of a PUF (polyurethane foam) adsorbing material. According to the method, PUF is used as a base material, amino groups on the surface of the PUF are exposed firstly with a hydrochloric acid boiling method, then the amino groups are converted into diazo salt through a diazo-reaction, CMbeta-CD (carboxymethyl beta-cyclodextrin) is coupled and fixed on the surface of the PUF by the aid of electrostatic self-assembly of a CMbeta-CD aqueous solution and a nitrogen release coupling reaction under irradiation of ultraviolet light, finally, CMbeta-CD which is not assembled and coupled is removed through hot water soaking, and the PUF adsorbing material is prepared. The adsorbing material has the better hydrophilic property, the CMbeta-CD capacity and the water absorption of the adsorbing material are adjustable in a large range, and the adsorbing material has higher adsorption capacity for phenol in water; the adsorbed phenol can be desorbed with an ethanol aqueous solution, the adsorbing material is regenerated, and phenol can be recycled; the regenerated adsorbing material can adsorb phenol continuously, and the adsorbing capacity is not reduced obviously.

The invention provides a preparation method of phenol adsorbent resin. The preparation method comprises the following steps of: with small-granularity waste polymerization white spheres of macroporous ion exchange resin within the granularity range of 45-60 meshes adopted, extracting to obtain a porogenic agent, stoving, carrying out chloromethylation according to a macroporous anion resin standard process until chloride content is 15-25%, washing chloride spheres with water until no chloride ion exist after reaction is finished, stoving, then carrying out Friedel-Crafts reaction and then crosslinking, and then carrying out surface fluorination to generate the adsorbent resin with high specific surface area. The phenol adsorbent resin obtained by the preparation method provided by the invention has high adsorption capacity, the phenol adsorption capacity is more than 100mg per ml of the resin, and the phenol adsorbent resin has high strength, is difficult to break and has short regeneration time.

The invention discloses a preparation method of monolithic microporous-macroporous Silicalite-1@SiO2. The preparation method comprises the following steps: mixing, heating and melting epoxy resin, polyethylene glycol 1000 and polyethylene glycol 20000, adding triethylenetetramine, stirring for 20-30 min, transferring to a mould, carrying out a reaction for 3-4 h, and transforming the liquid in themould into a white solid; soaking the white solid in distilled water, drying, soaking in tetraethyl orthosilicate, taking out the material, placing in NH3 for 25-27 h, drying and calcining to obtainmonolithic macroporous SiO2; and mixing and stirring a 40% tetrapropyl ammonium hydroxide solution, tetraethyl silicate and distilled water, soaking the macroporous SiO2 carrier in the solution for 3-4 h, then transferring into a pressure reaction kettle, carrying out a reaction, taking out the material, washing and drying, and then calcining to obtain the product. The material prepared by the method has good phenol adsorption performance and is easy to separate from an adsorption system.

The invention provides a preparation method of a shiny-leaved yellowhorn shell-based porous carbon material for gold adsorption, and relates to the technical field of preparation of porous carbon materials. The preparation method comprises the following preparation steps: S1, taking shiny-leaved yellowhorn shells, purifying the surfaces by utilizing high-pressure hot air, drying, and conveying thedried shiny-leaved yellowhorn shells into a gasification furnace; and S2, injecting mixed gasification agents with different proportions and injection angles into the throat of a gasification furnaceusing a novel rotary flat grate, wherein the working temperature of the gasification furnace is controlled at 1000 DEG C to 1150 DEG C by adjusting the ratio of the air to the water vapor in the mixed gasification agent to 1:1-3. According to the invention, the yield of the porous carbon is 15-20%, the specific surface area is 800-1500 m<2> / g, the phenol adsorption rate is greater than or equal to 450 mg / g, and the bulk specific gravity is 0.35-0.45 g / cm<3>.

The invention relates to a microorganism immobilization carrier material, a bio-adsorbent prepared from the microorganism immobilization carrier material, and a preparation method and application of the bio-adsorbent. The microorganism immobilization carrier material is a material which is composed of carbonized straw powder, sodium alginate and a chitosan / CNT material and used for immobilizing aerobic microorganisms. The bio-adsorbent is obtained by immobilizing microorganisms on the carrier material through adsorption-embedding-chemical bonding of the microorganism immobilization carrier material. According to the invention, a three-dimensional structure is formed between inorganic and organic carriers, oriented macropores are generated, a pore diameter is uniform, attachment growth of microorganisms is facilitated, and relatively high microbial activity and relatively good mass transfer property can be maintained; and the bio-adsorbent is high in a selective phenol adsorption rate, small in influence on the environment of a water body, optimal in adsorption performance in a pH value range of 5-8, high in an adsorption speed, and capable of basically achieving balance within 60 minutes.

The invention discloses a compound neutralization reactor and a condensation mother liquor wastewater pretreatment and resource utilization system and method in the production process of dispersed blue 56, and belongs to the field of wastewater treatment. It neutralizes the condensation mother liquor wastewater and mixed acid solution (sulfuric acid, sulfamic acid) in the production process of highly alkaline Dispersed Blue 56 in a compound neutralization reactor, thereby reducing the pH value of the wastewater, precipitating phenol, and removing nitrous acid Three purposes are achieved at the same time; the neutralized wastewater passes through a fixed-bed adsorption column equipped with adsorption resin, so that the residual phenol in the wastewater is adsorbed on the resin column. The adsorbed saturated resin can be reused after desorption and regeneration with NaOH solution. The desorption solution undergoes acid adjustment and vacuum distillation of phenol to realize the resource utilization of phenol. The present invention pretreats the condensation mother liquor wastewater in the production process of Dispersed Blue 56. The CODCr value is reduced from about 55000mg / L to less than 500mg / L, the phenolic substance concentration is reduced from about 19000mg / L to less than 20mg / L, and the nitrite ion is reduced from about 19000mg / L to less than 20mg / L. 87000mg / L reduced to less than 20mg / L; effectively realizing wastewater treatment and resource utilization.

The invention discloses a preparation method of an intelligent gel phenol adsorption separation agent with environmental response performance. The method includes the steps that 1 g of temperature-sensitive gel monomers and 2-8 g of adsorbent are dissolved in 20-40 mL of absolute methanol solution, 0.01-0.05 g of crosslinker is added, the mixture is subjected to a reaction for 24 h at 50-80 DEG C under the constant-temperature water bath condition and then cooled to room temperature, the product is soaked in an absolute ethyl alcohol solution for 3 days so as to remove unreacted monomers, the product is sequentially put into 100 mL of mixed solution of ethyl alcohol and water with the volume ratio of 7:3, 100 mL of mixed solution of ethyl alcohol and water with the volume ratio of 6:4, 100 mL of mixed solution of ethyl alcohol and water with the volume ratio of 5:5, 100 mL of mixed solution of ethyl alcohol and water with the volume ratio of 4:6 and 100 mL of mixed solution of ethyl alcohol and water with the volume ratio of 3:7, the mixed solutions are replaced once every day, and finally the product is soaked in distilled water for one week; obtained gel is diced and dried to constant weight, and then the intelligent gel phenol adsorption separation agent with the environmental response performance is obtained. The prepared intelligent gel phenol adsorption separation agent with the environmental response performance has adsorption separation performance for phenols in water and temperature sensitivity of gel and is large in adsorption area, high in mechanical performance and good in processibility.

The invention relates to a preparation method of a green solvent modified zeolite phenol sorbent. The preparation method comprises the following steps of: a, adjusting the pH value of a 1.0-1.2wt% hexadecyl-3-methylimidazole chloride solution to be alkali, thereby preparing a modifier solution; b, mixing zeolite and the modifier solution prepared in the step a; c, carrying out solid-liquid separation in a centrifugal machine to obtain a sediment, cleaning the sediment by using distilled water, then, centrifuging, and repeating the steps until a supernatant liquid is checked by using a silver nitrate solution to have no white sediment; and d, drying a solid substance by using an electrothermal blowing dry box to obtain modified zeolite, wherein the solid substance is obtained through separation in the step c. The method has the following advantages: raw materials are easily available, and the method is simple and convenient to operate; and the prepared phenol sorbent is environmental-friendly and pollution-free, and the absorption capacity of the phenol sorbent is increased by over 10 times than that of common zeolite.