845results about How to "Toxic" patented technology

The invention discloses a recycling and harmless treatment method for cyaniding tailing slurry. In the method, the cyaniding tailing slurry containing cyanogen, thiocyanate, heavy metal and arsenic and liquid containing hydrogen peroxide are subjected to direct mixing treatment; the method utilizes high specific surface area of micro-fine granular ore to add the contact opportunity between the thiocyanate and the hydrogen peroxide and the contact area between gas phase and liquid phase through surface adsorption to accelerate a speed of oxidation-reduction reaction and an acidifying and stripping speed, utilizes metallic substances contained in slag to accelerate the reaction rate of the oxidation-reduction reaction without the addition of catalyst, and can reduce cost; meanwhile, in neutralization, Fe3+ in the slag is utilized to meet the requirement of arsenic precipitation without the addition of an arsenic precipitation reagent; when residual cyanides is removed from the hydrogen peroxide liquid, the hydrogen peroxide liquid and cyano complexes which are difficult to remove through the oxidation-reduction reaction form sediment so that the residual thiocyanate is further removed; the method can make the conversion rate of the thiocyanate in the ore slurry more than or equal to 88 percent; and compared with the treatment of filter pressing clear liquid of homogeneous ore slurry, the total reclaiming rate can be increased by over 20 percent.

The invention relates to a bromine-containing pentaerythritol phosphoester fire retardant and a preparation method thereof. The bromine-containing pentaerythritol phosphoester fire retardant is pentaerythritol double-spiro phosphoryl double-tribromo neopentyl alcohol ester. The preparation method of the novel bromine-containing pentaerythritol phosphoester comprises the following steps of: 1, reacting pentaerythritol with phosphorus oxychloride to generate an intermediate pentaerythritol double-spiro double-phosphorus oxychloride; and 2, reacting the pentaerythritol double-spiro phosphorus oxychloride with tribromo neopentyl alcohol to generate the pentaerythritol double-spiro phosphoryl double-tribromo neopentyl alcohol ester, wherein in the reaction, quaternary ammonium salt cation ionic liquid serves as a solvent and a catalyst. The invention discloses a new synthesis method of the bromine-containing pentaerythritol phosphoester fire retardant. The ionic liquid serves as the solvent, so the synthesis yield is improved; and a phosphorus-bromine synergistic flame retardant technique is adopted in the design of a molecular structure, so the anti-flaming efficiency of the flame retardant for high molecular materials is improved.

The present invention relates to a recovery technological process of car and electronic wastes and its recovery system. Said system includes removing equipment, breaking equipment, sorting equipment, plastics regeneration treatment equipment and metal component deep-processing equipment. Said plastics regeneration treatment equipment includes oxidation device, granular material drying device, mixing device and granulating machine. Besides, said invention also includes a data processing equipment, including data base, memory, analysis module and comparison and operation module, etc.

The invention discloses magnetic composite hydroxyapatite nanoparticles. The magnetic composite hydroxyapatite nanoparticles are composed of Fe3O4 nanoparticles and hydroxyapatite nanoparticles, wherein the molar ratio of the Fe3O4 to the hydroxyapatite is (1-10): 1; the magnetic composite hydroxyapatite nanoparticles are spherical aggregate or agglomerate in which the Fe3O4 nanoparticles and the hydroxyapatite nanoparticles are distributed evenly and alternately. The preparation method of the magnetic composite hydroxyapatite nanoparticles is simple; the nanoparticles are capable of efficiently removing heavy metal ions in sewage, and in the later treatment period, quick magnetic separation can be realized; the nanoparticles have the adsorbing capacity of 440mg/g to lead ions, the adsorbing capacity of 238mg/g to cadmium ions, the adsorbing capacity of 139mg/g to zinc ions and the adsorbing capacity of 135mg/g to copper ions in the sewage; the magnetic composite hydroxyapatite nanoparticles have a rapid magnetic response characteristic, and are capable of realizing rapid solid-liquid separation with an external magnetic field, and the separation process is high in separation efficiency, and simple and efficient to operate; and besides, the nanoparticles are not residual in water and do not cause secondary pollution to the water and the environment.

The invention discloses a graphene quantum dot nuclear targeting medicine carrying system as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, sterilizing an aqoeous solution of a graphene quantum dot and an aqoeous solution of an anti-cancer medicine; secondly, mixing the aqoeous solution of the graphene quantum dot and the aqoeous solution of the anti-cancer medicine according to the mass ratio of (5:1)-(50:1) to obtain a medicine carrying system; thirdly, co-cultivating the medicine carrying system and cells, detecting the toxicity of the cells by using an MTT (Methyl Thiazolyl Tetrazolium) method and detecting a medicine loaded into the cells by using a fluorescent microscope. According to the invention, by virtue of the characteristic that the graphene quantum dot has a single-atom planar structure, the graphene quantum dot and a micromolecule anticancer medicine with a polycyclic planar structure are combined by bonds to form the medicine carrying system which can stably exist in the aqoeous solution. The graphene quantum dot has a medicine carrying function; meanwhile, the graphene quantum dot has a special structure, so that the toxicity of the medicine to the cells can be increased. The medicine carrying system has the advantages of lower toxicity, simple preparation method, easiness for implementation and double functions of carrying the medicine and enhancing the toxicity of the medicine to the cells.

The invention belongs to the technical field of feed, and particularly relates to compound feed for improving the production performance of laying hen and the egg quality. The compound feed consists of corn, lard oil, soybean meal, rape seed cake, peanut meal, gunite bran, mountain flour, calcium hydrophosphate, lysine, methionine, liquid phytase, liquid xylanase and premix. The compound feed provided by the invention can obviously improve the production performance of laying hen and improve the laying rate and the egg quality, and can increase the weight of a single egg and reduce the damage rate of eggs; and moreover, after being eaten by the laying hen, the compound feed can promote digestive absorption, improve the feed conversion rate and the feed-gain ratio, and increase the economic benefits of laying hen farming.

Disclosed is a method for extracting dihydro quercetin from larch. The invention is an improved production method. Due to different production materials and extraction processes, the dihydro quercetin products in U.S. and European markets are very expensive, at a price of 200-1000 euros per gram. Such a high market price economically limits the wide range of practicability of dihydro quercetin products. During the pretreatment of raw materials, 50 kilograms of larch wood chips and 500-800 liters of 50% ethanol solution are added into a reactor to get fully stirred and mixed; then the mixture is extracted and filtered for the second extraction; the filtrates are combined and adsorbed; the organic solvents are collected and dried by a vacuum evaporator through organic phase vacuum distillation; according to a weight proportion of 10:1, the residues are dissolved with hot water, decolorized with activated carbon and then crystallized at a temperature of 3-5 DEG C to precipitate the dihydro quercetin product which is then crushed after vacuum drying to finished product. The invention is used to extract dihydro quercetin from larch.

An insecticide for the pests in homopteran, thysanoptera, lepidoptera and coleoptera is prepared from camptothecine or its derivative, emulsifier, penetrant and organic solvent through proportional mixing.

The invention provides a novel immunomodulatory protein FIP-ppl derived from a fungus by applying a genetic engineering means for the first time. According to the invention, a gene which codes the protein is provided and synthesized. The protein FIP-ppl has immunomodulatory and anti-tumor effect. Experiments verify that the protein has a catalytic splitting effect on splenic lymphocyte and can add synthesis of interleukin 2; the protein has remarkable suppress proliferation and apoptosis-inducing effects of the protein on hepatoma carcinoma cell HepG2 and gastric carcinoma cell MCG823 are further verified. The protein FIP-ppl provided by the invention is lowly homological with almost found immunomodulatory proteins of fungi and is a novel immunomodulatory and anti-tumor biological preparation.

The invention provides a Coxsackie virus A16 virus strain, uses of the strain, a vaccine and a preparation method of the vaccine. The preservation number of the Coxsackie virus A16 virus strain is CGMCC No.6954. The CA16 virus strain has strong virulence, can be used for evaluating the CA16 vaccine, and can also be used for researching the CA16 virus infection mechanism. A method for establishing a Coxsackie virus A16 infected animal model provided by the invention can provide a stable animal model, and provides a foundation for the development of the Coxsackie virus A16 vaccine, the screening of antiviral drugs and the researches of the CA16 virus infection mechanism. The vaccine prepared by using the CA16 virus has effective immune activity.

The invention relates to a water quality integrated bio-toxicity on-line automatic analyzer and a method for using the same. The analyzer is characterized in that the interior of the analyzer is provided with two temperature control areas, wherein one temperature area at a temperature of between 0 and 4 DEG C mainly comprises a freezing dry powder storing device, a sterilizing device, a freezing dry powder definite quantity control device and a nutrient solution storing device; and the other temperature area at a temperature of between 20 and 25 DEG C mainly comprises a photogenic bacterium activating reaction storing kettle, a buffering liquid storing device, a regulation and control device for water to be tested, a clear water flow rate transmission and control pipeline, a delicate testing device and a rotary long shaft fixing round plate in a dark box, wherein a test tube is assembled on the round plate; the dark box cover is connected with the photogenic bacterium activating reaction storing kettle, the buffering liquid storing device, the control device for water to be tested and an analyzer externally connected washing pipe through the flow rate transmission and control pipeline; and the interior of the dark box is provided with a photoelectric probe. The analyzer has the advantages of on-line test achievement for water quality integrated bio-toxicity, simple operation and high automation degree in the aspect of maintenance, and can obtain reasonable cost performance and be suitable for the on-line monitoring of abominable environment. The analyzer can be used as a single machine, and can also be used as a front-end product of a monitoring network system.

The invention provides a method for the genetic transformation of agrobacterium tumefaciens mediated sclerotinia sclerotiorum. The method comprises the following steps: mixing and co-culturing the agrobacterium tumefaciens containing binary vectors and the protoplasts of the sclerotinia sclerotiorum; and screening by using antibiotics to obtain transformants, the transformation efficiency of the method reaches 1/5.9*104 protoplasts. By using the protoplasts of the sclerotinia sclerotiorum as the receptor and using the agrobacterium tumefaciens as the mediator, the method of the invention overcomes the problem of the difficult genetic transformation of sclerotinia sclerotiorum, which is resulted from the multinucleate hypha cells and the difficulty in obtaining a large amount of ascospore, and has the advantages of simple method and stable transformation efficiency. Meanwhile, the invention further provides a simple and effective method for preparing the protoplasts of sclerotinia sclerotiorum.

The invention discloses a method for removing the toxicity of tail water of fine chemical biochemical treatment, belonging to the field of sewage treatment methods. The method comprises the following treatment steps: (a) carrying out catalytic ozonation, specifically, treating sewage in a catalytic ozonation tower which is internally filled with an iron-aluminum catalyst, wherein the iron-aluminum catalyst is prepared from the following effective components: beta-iron oxyhydroxide and aluminum oxide; (b) absorbing, specifically, carrying out further treatment on wastewater, subjected to treatment in the step (a), by using an absorption filter filled with ceramsites and magnetic resin, wherein the mass ratio of the beta-iron oxyhydroxide to the aluminum oxide in the iron-aluminum catalyst is equal to (15-20) to (80-85), and the volume ratio of the ceramsites to the magnetic resin is equal to (2-3) to (3-5). The method provided by the invention is simple to operate and low in cost, and not only can realize the non-toxic emission of the tail water, but also can improve the comprehensive index of water quality.

A polyimide fiber with kidney-shaped section and a preparation method thereof belong to the technical field of polyimide fibers. The preparation method includes: utilizing polyamide acid (PAA) solution synthesized by aromatic dianhydride and aromatic diamine to perform the wet spinning process by the aid of circular spinneret holes, adjusting spinning conditions including spinneret speed, composition, proportion and temperature of coagulating bath, the length of hydrazine and the like to obtain a PAA as-formed fiber with kidney-shaped section, then washing and drying the PAA as-formed fiber, cyclizing and drafting the same at high temperature stage by stage, and winding and the like, finally obtaining the polyimide (PI) fiber with the kidney-shaped section. The preparation method of the polyimide fiber with the kidney-shaped section has the advantages of simplicity in spinneret hole design and processing, easiness in control of spinning process, high preparation efficiency, low cost for raw materials, low energy consumption and the like and can be used for large-scale industrialized production.

The invention discloses a chelated trace element fertilizer-medicament mixture. In the mixture, trace elements which are necessary for crops are mixed, a chelation reaction between organic matters and the trace elements is facilitated by adding a plurality of amino acids and lignosulfonates, and abamectin serving as a biological pesticide is selected and effectively matched with the fertilizer. The invention further provides a production and preparation method of a fertilizer-medicament liquid mixture product. Due to the adoption of the method, the coordination reaction level between trace element ions and a multi-effect chelating agent is raised, and the technical problems of emulsification and delamination are solved. The chelated trace element fertilizer-medicament mixture is applied to crop leaves, the lack of trace elements in crops can be corrected, a remarkable effect is achieved, and the effects of disease resistance and insect resistance are achieved.

The invention discloses a compound microbial preparation as well as a preparation method and application thereof. The preparation comprises phanerochaete chrysosporium balls, polyvinyl alcohol, silicon dioxide, activated carbon, sodium alginate and zeolite powder, which form the compound microbial preparation through crosslinking by a solution with sodium dihydrogen phosphate. The preparation method comprises the steps of preparing a gel liquid with the polyvinyl alcohol, sodium alginate, silicon dioxide and zeolite powder, mixing with a phanerochaete chrysosporium spore suspension with the activated carbon, then gradually dripping into the solution with the sodium dihydrogen phosphate so as to prepare embedded balls, and cultivating by a Kirk inorganic culture solution so as to prepare the compound microbial preparation. The compound microbial preparation has many gaps, high adsorption efficiency and good selectivity, the adsorbent has strong stability, the preparation method has the advantages of simple operation, low cost, affordability and so on, and the compound microbial preparation can be used for eliminating cadmium and 2, 4-dichlorophen in waste water.