192 results about "Natural degradation" patented technology

A manufacturing method of coating film PLA biodegradable material and its setup using PLA biodegradable granule through drying machine to process water content before heating granule to molten on one hand and entering lamination head on the other hand through conveyer and squeezing out a thin film, then pushes lamination machine to fixed location and position lamination head between two rollers, than through lateral cylinder to control its displacement so that lamination head locates at center of two rollers, same time control rolling machine so that lamination point ascends to proper distance from outlet; while paper web or thin wood paper board surface heating through heater and enlarging pores, then using surface treatment so that pores are further enlarged to facilitate PLA thin film easy to coat film for providing fast lamination and increase yield and producing all kinds of paper containers and achieve natural degradation.

The invention discloses a processing technique of a biodegradable medical spun-laced non-woven material, comprising the steps that: in an environment of 25 to 35 DEG C of temperature and 75 percent of moisture, the material is weighted and fed, then is opened in through a fiber opeinin machine to come into a cotton blending box to be blended; one half of the blended material is groomed by a carding machine and enters a cross lapping machine to be lapped and enters a drawing machine to form a cross lapping fiber net, and the other half of the materials is groomed by an on-line carding machine and forms a confused fiber net, and then the two halves are overlapped into a net. The netted materials are sprayed and reinforced by a plurality of times through a squirt of a spun lace head in a spun lace machine, then dried by a drying machine, and checked for stains and finally coiled by a coiler, and the whole technique is completed. The products of the technique have the advantages of strong moisture absorption, soft hand feel, excellent wearing comfort and bacteria repellancy and natural degradation.

The invention discloses a normal temperature water-based non-phosphorus rust-proof cleaning agent for heavy oil. The rust-proof cleaning agent comprises an anionic surfactant, a nonionic surfactant and auxiliaries, wherein the mass ratio of the anionic surfactant to the nonionic surfactant to the auxiliaries is (1.5-4): (1.5-4): 1. The cleaning agent comprises the following components in parts by weight: 5 parts of sulfonated fatty acid ester, 6 parts of AEO (alcohol ethoxylate), 2 parts of JFC, 2 parts of sodium carbonate, 2 parts of sodium metasilicate pentahydrate, 2 parts of EDTA (ethylene diamine tetraacetic acid) disodium and 3 parts of dimer acid-modified water-based acrylate. The cleaning agent disclosed by the invention has a relatively high natural degradation effect and overcomes the defect that common cleaning agent has the cleaning function only at a medium temperature or relatively high temperature and the cleaning agent disclosed by the invention has a relatively high cleaning effect at normal temperature. In addition, the cleaning agent disclosed by the invention further overcomes the defect that the existing cleaning agent is poor in anti-rust performance.

The invention relates to a flowerpot and a manufacturing method thereof, in particular to a degradable environmental-friendly flowerpot and a manufacturing method thereof. Components of the flowerpot comprise: plant fiber powder and a cementing compound, weight percentage of the plant fiber powder is 50 percent to 70 percent and that of the cementing compound is 30 percent to 50 percent; the plant fiber powder comprises rice hull powder, bamboo powder and soybean powder, and the weight percentage of the plant fiber powder is: 40 percent to 70 percent the rice hull powder, 10 percent to 40 percent the bamboo powder and 20 percent to 30 percent the soybean powder. Main processing technique is: mixing, dehydration, pressing, grinding and packaging. The environment-friendly flowerpot manufactured by the invention has the advantages of natural degradation, good stiffness, high strength and being uneasy to deform.

The invention relates to the technical field of the thermoplasticity elastomer, in particular to a water-proof moisture-permeable polyurethane thermoplasticity elastomer and a preparation method thereof. The water-proof moisture-permeable polyurethane thermoplasticity elastomer is prepared from polyurethane colloidal particles, wherein the polyurethane colloidal particles are prepared from the following raw materials in parts by weight: 40-90 parts of polyester polyol or polyether polyol, 15-45 parts of diisocyanate and 3-12 parts of chain extender; the polyester polyol is obtained in a way that at least one of polyatomic acid and polyester and polyhydric alcohol are subjected to dealcoholization and dehydration condensation according to a mole ratio of 1to (1.01-1.2) in a vacuum fusion method, the hydroxyl value of the polyester polyol is 20-120mgKOH/g, and the acid value of the polyester polyol is 0.1-2mgKOH/g. The thermoplasticity elastomer has the advantages of good plasticization processing, high natural degradation speed and environmental protection, can be regulated according to the moisture-permeable requirements and can also resist bacteria and avoid dust mists.

The invention relates to a manufacture method of an environment-friendly lignin composite material. A thermal pressing forming treatment technology is adopted to prepare the environment-friendly lignin composite material by using forest remains and rejected wood materials as main raw materials; after the and pretreating, adding stuffing, such as a larch extract, lignin in papermaking waste liquid, and the like; adding biological degradable resin-polylactic acid; and assembling and combining blanks. The invention is free from reliance on a formaldehyde-contained cementing compound, not only improves the plate-forming performance, but also is biologically degradable after being used by adding the degradable resin, thereby not causing environmental pollution and partially substituting the prior petroleum source products. The preparation method of the invention is simple and suitable for industrialized production. The products are provided with multifunction lignin forming products with high strength ratio, environment-friendly types, natural degradation, and the like, can be applied to the fields, such as building industry, interior decoration engineering, electric appliances, manufacturing industry, and the like and can substitute qualitative material products with similar performance.

The invention relates to a composition material formed by natural cellulose and synthetic resin or polylactic acid, and belongs to the technical field of synthetic materials. The composition material formed by the natural cellulose and the synthetic resin or polylactic acid comprises 10 to 90 weight percent of natural cellulose powder, 90 to 10 weight percent of resin and 0 to 5 weight percent of coupling agent, wherein the natural cellulose powder is straw, bagasse, sawdust or low value wood; the resin is any one of synthetic resin or polylactic acid; and the coupling agent is any one of silanes and titanate esters. The composition material has the advantages of low cost, high mechanical strength, low residue of harmful substances such as formaldehyde and melamine, and quickly natural degradation of cellulose in the composition under the action of microorganisms or physical and chemical factors.

The invention relates to the technical field of plant remediation of oil-contaminated soil, in particular to a method for treating and remediating oil-contaminated soil by using gaillardia aristata pursh flower plants. The method is to plant gaillardia aristata pursh in oil-contaminated soil. When the total petroleum hydrocarbon concentration of the soil is 10,000mg/kg, the growth amount of the plants is not inhibited basically, and the gaillardia aristata pursh can effectively degrade the total petroleum hydrocarbon in the oil-contaminated soil through the combined functions of the developed roots and root microbes to reduce the total petroleum hydrocarbon content in the contaminated soil. When the gaillardia aristata pursh is planted for 90 days, the degradation rate of the total petroleum hydrocarbon content in the contaminated soil can reach 56.63 percent which is nearly 4 times a blank natural degradation rate which is 15.49 percent. This proves that the gaillardia aristata pursh has high oil contamination resistance and high total petroleum hydrocarbon degradation capability. Thus, the total petroleum hydrocarbon in soil can be effectively removed by planting the gaillardia aristata pursh in the oil-contaminated soil, and removing all plants and well treating the plants in a centralized manner after the plants are mature.

The invention discloses a preparation technology of a palm fiber; the preparation technology comprises the following steps: (1) acid dipping: putting a palm raw material into an acidic solution with the sulfuric acid concentration of 2-8 g/L, removing pigments on the surface of the fiber, and dissolving a part of pectin, wax and lignin impurities, wherein the acidic solution temperature during acid dipping is 40-60 DEG C and the time is 1-2 hours; (2) primary water washing; (3) primary alkali cooking: carrying out alkali cooking of a palm fiber after primary water washing, wherein the caustic soda amount during alkali cooking is 50-150 g/L, the time is 1.5-2 hours, and the temperature is controlled to be 90-140 DEG C; (4) secondary water washing; (5) chlorine bleaching; (6) pickling; (7) secondary alkali cooking; (8) tertiary water washing; (9) oxygen bleaching; (10) high temperature splitting; (11) quartus water washing; (12) vegetable oil addition and treatment; (13) finally, dehydration and drying treatment of the palm fiber after oil addition treatment. The prepared palm fiber has the advantages of soft hand feeling, high strength, strong moisture absorption and gas permeability, environmental protection, natural degradation and the like.

The invention discloses a method for blending and interplanting plants in an organic orchard and belongs to the field of soil nutrient improvement. The method comprises the steps of taking maidenhair, mint and ageratum conyzoides as three aromatic plants in the organic orchard; sowing seeds of the three aromatic plants among fruit trees in March, blending and interplanting the three aromatic plants in a staggered planting mode, and mulching a white film after planting; after the three aromatic plant seedlings grow to be 8-12cm high, performing thinning and transplanting, and maintaining plant line spacing as 0.2*0.4m; watering every 10 days at the growth primary stage of the three aromatic plants, and intertilling and weeding to ensure that no weeds exist in the blending interplanting planting area, wherein the three aromatic plants grow naturally at the medium and later stages and are cut in the last stage of July and October, and stubbles remain among the fruit trees for natural degradation. By blending and interplanting the maidenhair, mint and ageratum conyzoides, the total N, total P and total K contents in 0-20cm and 20-40cm soil layers of the orchard are effectively improved, the soil nutrition of the orchard is improved and the demands of the organic orchard are met.

Embodiments of the invention provide a method and device for dynamically assessing full-life cycle real-time reliability of shale gas fracturing equipment. The method comprises the following steps of:fitting a failure rate of an appointed component under a natural degradation state on the basis of Weibull distribution, and establishing a dynamic Bayesian network-based reliability prediction model; establishing a dynamic Bayesian network-based network fault cause reasoning model by taking monitoring parameters of the appointed component as fault symptom nodes; obtaining monitoring parameter values of the appointed component in real time, and inputting the monitoring parameter values into the fault cause reasoning model so as to predict the current state of the appointed component; and whenthe current state of the appointed component is abnormal, updating the reliability prediction model according to the current abnormal state of the appointed component, and predicting reliability of the appointed component according to the updated reliability model. The method and device are capable of improving the correctness of result for assessing full-life cycle real-time reliability of shalegas fracturing equipment.

The invention discloses an instant matched naturally-degradable sodium alginate hydrogel fire extinguishing agent. The instant matched naturally-degradable sodium alginate hydrogel fire extinguishingagent comprises a component A sodium alginate, a component B carbohydrate solubiliser and a component C soluble calcium salt, wherein a mass fraction ratio of the component A to the component B is 1:(2.5-6.5). When the fire extinguishing agent is used, the component A and the component B are dissolved in water, and then are sprayed on the surface of a comburent, and the component is used to prepare a 0.2-3% solution and then is sprayed on the surface of the comburent; or the above obtained two solutions are simultaneously sprayed on the surface of the comburent. The fire extinguishing agent has the following advantages: (1) the fire extinguishing agent is a powder composed of the sodium alginate, the carbohydrate solubiliser, an alkali and the soluble calcium salt, and is easy to store andtransport; (2) the fire extinguishing agent is instant in water, can be rapidly crosslinked to form a hydrogel layer in order to isolate air, also has an excellent water retention performance and strong heat insulation, flame retardation and fire extinguishing effects, and greatly reduces the water consumption during fire extinguishing; and (3) the fire extinguishing agent has the characteristicsof convenience in use, wide application range, natural degradation, greenness and environmental protection.

Provided is a method using micro/nano bubbles for enhanced in situ remediation of polluted groundwater, comprising: arranging a water injection pipe (7) at an upstream location of an area where groundwater is polluted; introducing thereto a micro/nano bubbles-containing water having nutrient salt(s) therein; transferring the micro/nano bubbles-containing water having nutrient salt(s) with the movement of groundwater to the polluted area, decomposing organic pollutants or continuously replenishing electron acceptor(s)/donor(s) for microorganisms to facilitate the degradation and removal of the organic pollutants; meanwhile, arranging a water extraction pipe (17) at the downstream of the polluted area to extract water and form a groundwater flow-field; setting up a monitoring well for real-time monitoring and analyzing of parameters during the removal process of the organic pollutants and adjusting the occurrence time and the amount of aeration of the micro/nano bubbles. Also provided is a system using the micro/nano bubbles for enhanced in situ remediation of the polluted groundwater. The micro/nano bubbles have a great oxygen-supplying effect, a long duration, and a large influence area, compensate for deficiencies of regular in situ remediation technologies such as natural degradation and bioventing, are of reduced costs and energy efficient, and are applicable in remediation of sites with a limited area and a high pollution load.

The present invention relates to a low-temperature preparation process of degradable efficient oil absorbent. It is prepared through reaction of bagasse with acetic anhydride and N-bromo-succinimide in a reactor and the separation of reaction products. The process is simple and low in cost, and utilizes natural resource effectively. Needing no separation of organic solvent and residual product, the process has high yield and less environmental pollution. Compared wth prior production process, the process has decreased reaction temperature from 120 deg.c to 50-80 deg.c and this further reducesproduction cost. In addition, the low-cost catalyst is used, the product has high oil absorbing amount, the absorbed oil may be recovered via squeezing and the oil absorbent may be used repeatedly before natural degradation producing no environmental pollution.

The invention provides a method for preparing a slow-release fertilizer type degradable mulching film by combining a slow-release fertilizer with a degradable mulching film. The invention relates to the crossing field of slow-release fertilizers and degradable plastic, wherein fertilizer ingredients are slowly released during the natural degradation process of the degradable mulching film by organically combining the fertilizer with the degradable mulching film, and then an environmental pollution problem due to overfertilization and mulching film use are solved simultaneously. The method is characterized in that one or more of the fertilizer ingredients such as nitrogen fertilizer, phosphate fertilizer and potash fertilizer are dissolved or dispersed in degradable mulching film mother solution in a certain ratio during the preparation process, and then the slow-release fertilizer type degradable mulching film is prepared by casting film forming or extrusion film forming. The method provided by the invention provides the added contents of different fertilizer ingredients, conditions and main basis, realizes uniform film forming, keeps plasticity and mechanical strength to a certain extent, can be used for agricultural mulching film materials, and has a good practical value and promotional significance.

The invention discloses a method for degrading petroleum by pseudomonas aeruginosa having a high rhamnolipid yield. The method comprises (1) acquisition of pseudomonas aeruginosa having a high rhamnolipid yield, (2) enlarge cultivation: inoculating a liquid medium with the pseudomonas aeruginosa obtained by the step 1, carrying out culture under shake culture conditions of 30+/-1 DEG C and 150-180 rpm for 50-60h, carrying out centrifugation and filtration, collecting mycelia and drying the mycelia to obtain bacterial powder, and (3) degradation of petroleum: putting the bacterial powder obtained by the step 2 to the sea surface polluted by petroleum according to a ratio of the bacterial powder to the petroleum of 20-30g: 100g and carrying out natural degradation for 15-30 days. The method has the advantages of fast degradation rate, no residual hazard and low cost.

The invention discloses a composite magnetic flocculating agent with an auto-catalytic degradation function. Inorganic magnetic composite micro-particles are used as cores, and polyacrylamide is bonded on the surfaces of the inorganic magnetic composite micro-particles to obtain the composite magnetic flocculating agent; the inorganic magnetic composite micro-particles comprise inner-layer magnetic ferriferous oxide, intermediate silicon dioxide coating layers and outer titanium dioxide coating layers. The invention further discloses a method for preparing the composite magnetic flocculating agent. The composite magnetic flocculating agent with the auto-catalytic degradation function and the method have the advantages that the contact efficiency of photocatalysts can be effectively improved, the flocculating performance of the composite magnetic flocculating agent can be enhanced, the composite magnetic flocculating agent is low in usage, sewage can be treated by the composite magnetic flocculating agent within short time, obvious sewage treatment effects can be realized, and the sewage treatment efficiency can be effectively enhanced; internal catalytic photo-degradation can be carried out on uniformly distributed titanium dioxide under the effect of ultraviolet light, breakage and degradation of macromolecular chains of the polyacrylamide can be accelerated, and secondary pollution due to natural degradation of the polyacrylamide can be effectively reduced; the method is implemented under mild conditions and is easy to control and implement.

The invention relates to aspergillus fumigatus and application thereof. The collection number of aspergillus fumigatus LZ2 is CGMCC No.3859. The aspergillus fumigatus LZ2 CGMCC No.3859 can grow by taking imazethapyr as a unique carbon source, and is cultured in a basic salt culture medium which contains 200 mg.L-1 of imazethapyr for 8 days, so that the degradation rate of imazethapyr is up to 82.91 percent, and technical support is provided for the treatment of imazethapyr-polluted soil and water bodies. Meanwhile, the aspergillus fumigatus LZ2 CGMCC No.3859 is cultured in soil which contains 100 mug.kg-1 of imazethapyr for 60 days, so that the degradation rate of imazethapyr is up to 76.84 percent which is far higher than the imazethapyr degradation rate of natural soil, and the degradation half-life period of imazethapyr in soil is advanced from 75.9 days of natural degradation to 30.9 days by 48.6 days. By adopting the aspergillus fumigatus LZ2 CGMCC No.3859, degradation of imazethapyr in soil can be accelerated effectively.

The invention discloses a heterotype flat artificial silk spinning machine which is applicable to the production of hererotpe flat, non-twist and large fibrous artificial silk. The machine comprises a gel-feeding pipe, a metering pump, an angle pipe, an acid bath trough, a drafting mechanism and a deacidification mechanism. The machine is characterized in that: the drafting mechanism comprises a drafting roll assembly, the lower end of which is provided with a deacidification trough, and the terminal of the deacidification trough is provided with a wring-loading style winding mechanism. The machine is applicable to the production of heterotype flat monofilament which substitutes the synthesized fiber material that is hard for natural degradation, and meets the requirements of using green and environment-friendly material in domestic and foreign package material, artware and clothing decoration fields, etc. The machine is also applicable to the production of other heterotype monofilament, conventional monofilament and multifilament products. By adopting the technique of the invention, the fibrousness range of the artificial silk can reach 167dtex//1F-6667dtex/1F.