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686results about How to "Adsorptive" patented technology

Magnetic submicron composite core-shell particles, and preparation method and application thereof

The invention discloses magnetic submicron composite core-shell particles. In the magnetic submicron composite core-shell particles, Fe3O4 particles with the particle size of between 80 and 800nm are taken as a magnetic core, amorphous SiO2 is taken as an immediate shell layer and a substance with heavy metal absorption performance is taken as an outer shell layer. The invention also discloses a preparation method for the magnetic submicron composite core-shell particles. The preparation method comprises the following steps of: preparing the Fe3O4 particles with the particle size of between 80 and 800nm by a solvothermal method and taking the Fe3O4 particles as magnetic cores, performing alkaline hydrolysis of a silicon source reagent on Fe3O4 and dehydrating and condensing hydroxy groups so as to obtain amorphous SiO2 immediate shell layers, and coating the substance with heavy metal absorption performance on obtained submicron spheres under chemical or physical action to obtain the magnetic submicron composite core-shell particles. The submicron material has high performance of absorbing heavy metal ions in the sewage; and the material has stable characteristics, can be magnetically recovered and meets environmental protection requirements, and secondary pollution is avoided.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI

Integrated type ecological floating bed and water body ecological system repairing technology thereof

The invention discloses an integrated type ecological floating bed and the water body ecological system repairing technology thereof. A physical space of the integrated type ecological floating bed is formed by constructing a floating bed, a sinking bed, a buoyancy adjusting bottle, a lifting chain and an ecological barricading net, and integrates ecological components such as indigenous emergent aquatic plants, submerged plants, attached aquatic plants, fishes, snails and biochemical zeolite. The ecological behaviors of the ecological components are in linear cause and effect relation. The ecological components and organisms in the physical space form a semi-enclosed ecological subsystem with integral completeness. The upper line and the water body ecological system to be repaired are strong in coupling capability, and ecological factors in the lower line can exist stably. The damaged water body ecological system sufferring from one or a plurality of types of pollutions including water body eutrophication, heavy metal pollution, organic pollution and the like can be repaired by building pioneer communities and utilizing self-cleaning capability of the ecological system, pollution is removed, integral restoration or rebuilding of the damaged water body ecological system is promoted, simultaneously environment is beautified, and ecological deterioration of a healthy water body can be prevented.
Owner:HUNAN UNIV

Method for removing organic pollutants in water at ultrahigh speed

The invention relates to a method for removing organic pollutants in water at an ultrahigh speed. The method comprises the following steps: firstly, adding a reducing agent to water to be treated; secondly, adjusting the pH value of the water to be treated to be within the range of 3-7; thirdly, adding an oxidizing agent to the water to be treated. According to the method, bisulfite radicals are utilized for reacting with potassium permanganate or manganese dioxide, the removal of the organic pollutants in the water at the ultrahigh speed is realized by quickly generating a highly active oxidizing agent Mn(III) (at a non-complexing state), the rate of removing the pollutants by potassium permanganate and manganese dioxide can be improved by one thousand to one million times and is ten thousand times higher than the apparent oxidation rate of a general advanced oxidation technology, and the degradation for the pollutants can be completed in ten seconds or several seconds. According to the method, the pollutants incapable of being oxidized by potassium permanganate and manganese dioxide can also be oxidized, and even nitrobenzene capable of being oxidized by hydroxyl radicals only in traditional meanings can be oxidized, so that the oxidizing capacity of potassium permanganate and manganese dioxide is greatly improved, and the application range of potassium permanganate and manganese dioxide is expanded.
Owner:TONGJI UNIV +1

Purification treatment method and apparatus for pig raising waste liquid

The invention relates to waste processing, in particular to a method and a device for purifying waste liquid from pig cultivation, which solves the problem that the waste liquid of pig cultivation pollutes the environment. After solid and liquid waste generated by pig cultivation is separated, absorption, filtration and automatic purification technology is used for enabling the separated waste liquid from pig cultivation to enter into a first absorption pool for first absorption and filtration, then filtrated liquid enters an automatic purification depositing pool for purification depositing processing and then a second absorption pool for second absorption and filtration processing, and lastly, the processed waste water reaches the standard and is discharged. The device for purifying waste liquid from pig cultivation comprises a first absorption and filtration pool, an automatic purification depositing pool and a second absorption and filtration pool which are sequentially communicated, wherein filtration material is arranged in the absorption and filtration pools, and the filtration material is only one or a plurality of layers of furnace slag, crop stems, zeolite and gravel. The invention has simple technology, low cost and easy application, and is suitable for the purification and the standard discharge of the waste liquid from family type pig farms or small pig farms.
Owner:SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI

Method for producing nutritive soil for practical and highly efficient soilless flower growth

ActiveCN102696462ASolve the problems of unfavorable growth and high production costRetain nutrientsAgriculture gas emission reductionCultivating equipmentsRare-earth elementAdditive ingredient
The invention discloses a method for producing nutritive soil for practical and highly efficient soilless flower growth, belonging to the agriculture flower cultivation technology field, which is characterized by taking zeolite powder, medical stone powder and perlite powder as main nutritive components, taking river sand and sawdust as auxiliary raw materials, after scientifically biological fermentation of the sawdust, producing the soil which can maintain much nutritive ingredient. A method for producing the soil includes: selecting an oblique lining grey green zeolite powder which mainly comprises silicon dioxide, aluminium oxide or the like, crushing and preparing stock with grain size of 0.2-1mm, and the pH value of 5.5-7.0; selecting the medical stone which mainly comprises the silicon dioxide, aluminium oxide, potassium oxide, sodium oxide, magnesium oxide or the like, mainly using trace elements and thirteen rare earth elements and anti-solidification effect, and crushing and preparing the stock with the grain size of 0.2-1mm and the pH value of 5.5-7.0; selecting large grain gardening perlite containing 100% pure inorganic cultivation medium and having stable physicochemical index, crushing and preparing the stock with the grain size of 0.2-1mm; selecting the sawdust after scientifically biological fermentation; selecting high quality of river sand, exposing under the sun for 1-2 days in a high temperature and preparing the stock; and fully stirring and mixing the stocks of zeolite powder, the medical stone powder, the perlite powder, the sawdust, and the river sand according to a preparation ratio of 20%, performing spray and sterilization treatment, and packaging into a product.
Owner:郭茂青

Ionic liquid precursors and their supported mesoporous materials, synthesis and applications

The invention relates to an ionic liquid precursor and a mesoporous material for supporting the ionic liquid precursor, synthesis and application. A preparation method comprises the following steps of: 1) synthesizing the ionic liquid precursor; 2) synthesizing the mesoporous material for supporting the ionic liquid precursor; and 3) acidizing or alkalifying the synthesized mesoporous material for supporting the ionic liquid precursor according to the requirements so as to obtain a target product. The loading capacity of the mesoporous material for supporting the ionic liquid precursor is relatively adjusted, and a mesoporous material for supporting functionalized ionic liquid can be obtained by further acidizing or alkalifying the material according to the requirements. The amount, strength of acid and alkali, properties, variety and the like of ionic liquid supported on the material are adjustable, so that the material can meet the demand of application such as various acid and alkaline catalytic reactions, chemical adsorption and separation and the like. By the material, the using amount of the ionic liquid is greatly reduced, the better catalytic effect is achieved when the material is applied to aldol condensation reactions, and the recycling of a catalyst can be realized. The kind of material is expected to be used for catalyzing more chemical reactions, and may be applied in the fields of adsorption, separation, ionic conductance and the like.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Method for producing insulating bricks by utilizing aluminum-electrolyzed waste refractory materials

The invention discloses a method for producing insulating bricks by utilizing aluminum-electrolyzed waste refractory materials, relating to a recovery technology of waste refractory materials during the aluminum electrolysis production, wherein the aluminum-electrolyzed waste refractory materials are mainly various refractory material mixture in which waste cathode carbon blocks and side silicon carbide are removed. The method adopts the following raw materials in percentage by weight: 5-30% of the aluminum-electrolyzed waste refractory materials, 10-50% of fly ash or fly ash drift beads, 15-30% of a cementing agent, 1-5% of additives, 3-8% of a pore-forming agent and 10-20% of water, and the method comprises the following steps of: preparing the raw materials, mixing the raw materials, extruding the mixture to mold, drying and sintering to produce the insulating bricks; and by utilizing innocuous treatment measures, the extraction contents of fluoride and cyanide of the produced insulating bricks are lower than 50mg/l and 1.0mg/l, the smoke gas is adsorbed by an aluminum oxide, and the solvable injurant and the smoke gas of the insulating bricks both meet the national environment protection emission standard; and the produced insulating bricks can be applied to the heat insulation of various pipelines and walls at a temperature lower than 1000 DEG C.
Owner:YICHUAN LONGHAI TECH INDAL

Seedling cultivation composite organic matter basis and method of preparing the same

The invention particularly relates to a composite organic nursery substrate and a production method thereof. The substrate adopts leftovers of edible fungi and peanut shells as main materials, adopts peat, vermiculite, rice husk ash and attapulgite as accessories and adopts water retention agents, green fertilizers and ferrous sulfate as additives. The volume ratio of the main materials is 40-60:20-30 in sequence, the accessories are 5-20% of the main materials and the additives are in proper quantities. The production process of the substrate is as follows: decomposition pretreatment is carried on the main materials; the accessories and additives are added according to the volume ratio and are stirred evenly until the mixture passes test to be a qualified finished product. The substrate of the invention has good quality, rapid and neat emergence of seedlings, healthy plant growth and good water retention. The fertilizer efficiency can last for 30-50 days, enough for the growing development of the seedling stage, thus simplifying the management of labor power on plug seedling. Meanwhile, with good buffer action, the substrate can be widely applied to seedling culture of various organisms such as vegetables, flowers, cotton, rice, tobacco and nursery stocks, etc.
Owner:JIANGSU XUHUAI DISTRICT HUAIYIN AGRI SCI RES INST

Method for preparing modified loess with high adsorption performance

The invention relates to a method for preparing modified loess with high adsorption performance. The method comprises the following steps of: (1) after stirring loess, distilled water and acrylic acid uniformly under room temperature, dropwise adding a NaOH solution with neutralization being 40-90% for neutralization to obtain a neutralization solution; (2) then adding hydroxyethyl methacrylate to the neutralization solution and stirring the materials uniformly to obtain mixed liquor; and (3) adding a crosslinking agent glycidyl methacrylate to the mixed liquor, heating the materials to 40-90 DEG C after introducing inert gases, finally adding an initiator ammonium persulfate, stirring the materials for 20-120 minutes when raising the temperature to 50-95 DEG C, thus generating a composite, and washing and drying the composite to a constant weight, thus obtaining the loess-based polymer composite adsorbent. The method has the following advantages that the natural loess is used as the raw material and is modified by acrylic acid and hydroxyethyl methacrylate to obtain the loess-based polymer composite adsorbent; and the loess-based polymer composite adsorbent is applied to treatment of wastewater containing heavy metal ions and dyes and has the characteristics of strong absorbability and large adsorption capacity.
Owner:NORTHWEST NORMAL UNIVERSITY
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