60results about How to "Low ecotoxicity" patented technology

In this invention, fatly acid and ethanolamine are proportioned and under ester-aminated, then reacting with dimethyl carbonate to produce ester-amine type quaternary ammonium salt. Said invention p rocess of synthesis has high transforming rate, excellent selectivity, high content of active matter in said product, utilizing no pollution type raw material of dimethyl carbonate, so, no remaining of poison in product, lowering quaternary ammonium salt pollution to environment and to human health.

The invention discloses a method for studying influence of biological carbon on cadmium contaminated soil properties and a cadmium form. According to the studying method, three biochar is prepared byusing hizikia fusifarme, rice straw and hickory shells as raw materials, adsorbing effects of the three biochar on cadmium in an aqueous solution are compared, and thus the best biochar which absorbscadmium is optimized. The optimized biochar of different dosages is applied into cadmium contaminated soil, changes of basic physical and chemical properties of the cadmium contaminated soil and the chemical form of the cadmium are measured, and passivation effects of the biochar on the physical and chemical properties of the actual cadmium contaminated soil and soil cadmium pollution are preliminarily discussed. The influence of the biochar on the physical and chemical properties of the actual cadmium-contaminated soil and the chemical form of the cadmium is studied. The effective-state Cd content of the soil is reduced, an exchanging state of the soil heavy metal Cd is promoted to be converted into a carbonate binding state, an iron and manganese oxide binding state, an organic binding state and a residue state, the bioavailability and ecological toxicity of the heavy metal Cd are reduced, and thus the harm of the heavy metal cadmium is greatly reduced.

The present invention is a method for making a class of molecules synthesized from unsaturated plant oils, and the synthesized class of molecules, such that when compounded with saturated plant oils they improve the physical properties such as low temperature behavior, measured as cold filter plug point and cloud point for biodiesel fuels and pour point for oils and lubricants, as well as other physical properties including viscosity and viscosity index, so that the physical properties of the combined materials approach the physical properties of unsaturated plant oils and find use as base material feed stocks for “Green” fuel, oil, and lubricant products.

The invention relates to a method for synthesizing a dual-long-chain ester based quaternary ammonium salt, which belongs to the technical field of surfactants. The method comprises the following steps: using long-chain alkyl fatty acid to react with N-methyl diethanolamine and triethanolamine to prepare long-chain carboxylic acid based tertiary amine; and performing alkylation on the long-chain carboxylic acid based tertiary amine to prepare the dual-long-chain ester based quaternary ammonium salt. The method uses two steps of esterification reaction and continuous production, thus the raw material conversion rate is high, the selectivity is good, and the obtained product has high active matter content, light color, excellent biodegradability, low ecological toxicity and excellent environmental compatibility; and the product can improve the grade of compounding a product, is easy to be prepared into a high-concentration product, reduces the production and packing cost, and is convenient to use. The dual-long-chain ester based quaternary ammonium salt is a cationic surfactant, and the using method thereof in various aspects of fabric softeners, leather softeners, bactericides and the like is same as the using method of other cationic surfactants.

The invention belongs to the technical field of environment pollution treatment, and more specifically relates to a heavy metal-polluted soil repairing agent prepared by attapulgite. The attapulgite-based soil heavy metal repairing agent is obtained by steps of raw ore fragmentation, acidifying treatment, airing screening, roasting and soil heavy metal restoration. According to the attapulgite-based soil heavy metal repairing agent through acidifying and heat modification, attapulgite clay has characteristics of large specific surface area and high porosity amount due to sulfuric acid acidifying treatment of the attapulgite clay, activity and adsorptivity are increased, proportion of soluble heavy metals in the soil can be effectively reduced, soil heavy metal passivation effect can be reached, and soil heavy metal pollution can be remediated.

The invention discloses a use of attapulgite in a soil heavy metal pollution restoration agent. A preparation method of the attapulgite-based soil heavy metal pollution restoration agent comprises the following steps of 1, raw ore treatment: crushing attapulgite ore, 2, acidification treatment: slowly adding 2mol / L of dilute sulphuric acid into the attapulgite ore, carrying out acidification treatment and then carrying out activation, 3, drying in the sun and screening: transporting the acidified attapulgite clay to a cement place, carrying out drying in the sun until water content is less than 14%, carrying out crushing and carrying out screening by a vibrating screen, and 4, roasting and packaging: inputting the screened powder into a roasting furnace, carrying out roasting and carrying out cooling and packaging so that the attapulgite-based soil heavy metal pollution restoration agent is prepared. The attapulgite clay subjected to sulfuric acid acidification has the characteristics of large specific surface area and high amount of porosity, has high activity and adsorptivity, can reduce a ratio of liquid heavy metal in the soil and realizes soil heavy metal passivation and heavy metal-polluted soil restoration.

The present invention is continuous solvent-free process of synthesizing ester-base quaternary ammonium salt, and features that at certain temperature, long chain tert amine carboxylate and alkylating agent as materials are mixed and reacted to produce ester-base quaternary ammonium salt in the structure as shown. The synthesis process of the present invention has continuous production, short reaction period, low power consumption, high conversion rate and high selectivity and the product with high active component content may be used as fabric softening agent, leather softening agent, disinfectant, etc.

The invention discloses an adamantyl quaternary ammonium salt and a preparation method thereof. The structural formula of the adamantyl quaternary ammonium salt is shown as right formula, wherein R represents phenmethyl or alkyl containing 1 to 18 carbon atoms; and X represents Cl, Br or I. The preparation method of the adamantyl quaternary ammonium salt adopts amantadine as a material and adopts two-step reaction as follows: adopting amantadine to synthesize adamantyl dimethyl-tert-amine and then synthesizing the adamantyl quaternary ammonium salt through quaterisation of the adamantyl dimethyl-tert-amine. The invention has easy operation, mild reaction process, high yield and purity and low product eco-toxicity. The cation surface active agent of the adamantyl quaternary ammonium salt can be potentially applied to high and new technology fields of micro-electronics, biomedicine, pharmacy, nanometer material and the like.

The present invention discloses a manufacturing method of the high-efficient, innoxious and safe sterilizing and alga-destroying thing used in the natatorium. The method mainly comprises the following steps: under the protection of the inert gases, the frank-chain fat diamines is reacted with the dihydroxy ethyl aether in the water solution, and then are treated by the treating thing. The reaction liquid is adjusted to litmusless. The sterilizing and alga-destroying thing with the structure can be obtained. Thereinto, R1, R2, R3, R4 are respectively selected from H and a saturated or unsaturated alkyl including at least one carbon atom; m is among 1 to 14; n is among 1 to 5000; X represents a halogen ion combined with a positive ion. The product can be widely used for sterilizing and alga-destroying for the natatorium.

The invention relates to the technical field of sewage treatment, in particular to a sewage flocculant. The flocculant consists of the following components in parts by weight: 12-25 parts of poly-aluminum calcium chloride, 5-15 parts of ferric chloride, 2-10 parts of aluminum potassium sulfate, 2-8 parts of sodium carboxymethylcellulose, 1-6 parts of sodium hypochlorite, 10-30 parts of poly-molybdenum chloride, 10-20 parts of diatomite, 10-20 parts of zeolite and 0.01-0.05 part of additives. The sewage flocculant has the beneficial effects that the obtained flocculant is good in degradability, low in ecotoxicity, free of stimulation on human bodies, obvious in flocculation effect on the treatment of various complex sewage and high in cost performance for dehydration of sludge; the sewage flocculant has the characteristics of no toxicity and residue for human bodies, good flocculation effect and wide application range.

The invention belongs to the technical field of biomass resource recycling and new environmental functional materials, discloses a magnetic ferromanganese oxide-loaded mesoporous cellulose biochar composite, a preparation method thereof and application of the mesoporous cellulose biochar composite in environmental governance and remediation, and is particularly applicable to the field of adsorption of anionic pollutants. The preparation method comprises preparing mesoporous cellulose biochar, compositing MnFe2O4 in one step according to a solvothermal method, and loading the MnFe2O4 onto the mesoporous cellulose biochar to obtain the magnetic ferromanganese oxide-loaded mesoporous cellulose biochar composite. The mesoporous cellulose biochar composite prepared according to the method has the characteristics of strong magnetism, capability of being charged positively under acidic conditions, high dispersion stability, high adsorptive property and the like, can be widely applied to the field of environmental governance and remediation, is particularly applicable to pollution remediation of the anionic pollutants, such as adsorption of heavy metal and organophosphorus pesticides, andhas the glyphosate adsorption capacity as high as 167.2mg / g.

The invention discloses a foam oil and smoke cleaning agent and a preparation method thereof. The foam oil and smoke cleaning agent comprises the following components in percentage by mass: 0.03 to 14.5% of surfactant, 0.2 to 15% of alkaline aid, 0.1 to 15.5% of solvent, 0.1 to 2% of corrosion inhibitor, 5 to 40% of propellant, 0.5 to 2% of humectant, and the balance of water, wherein the surfactant is one or two of sodium sec-alkane sulfonate, fatty acid methyl ester sulfonate and fatty acid methyl ester ethoxylates; and the propellant is one or two of liquefied petroleum gas and dimethyl ether. The foam oil and smoke cleaning agent is sprayed in form of foam so as not to be absorbed into body through nose holes and irritate body like common oil and smoke cleaning agent; therefore, the agent is good for the environment and body health of users. In addition, the agent can effectively attach onto vertical surfaces or bottom surface of a hood, so material liquid waste is avoided and the cleaning is more completely.

The invention discloses a heavy metal passivation material of nano zero-valent iron composite attapulgite, wherein the heavy metal passivation material comprises the following substances in percentageby weight: 70-80% of attapulgite and 20-30% of nano iron; and meanwhile, the invention discloses a preparation method and application of the heavy metal passivation material. The prepared heavy metalpassivation material can change the chemical form of heavy metals in soil by adsorbing, fixing and passivating the heavy metals in the soil, so that the ecological toxicity of the heavy metals is greatly reduced, the bioavailability of the heavy metals is reduced, and a good effect of repairing heavy metal pollution of the soil is achieved.

The invention discloses a method for preparing fabric softening agent. The method is characterized in that: long-chain fatty alcohol and unsaturated acid undergo esterification reaction, then the esterification product and alcohol amine undergo addition reaction to form secondary amine, the secondary amine and halogenated hydrocarbon undergo substitution reaction to form tertiary amine, and the tertiary amine and a quaternization reagent are reacted to form the fabric softening agent; and the fabric softening agent has the following structure, wherein R1 is alkyl of C1 to C4 or -CH2CH(OH)CH3, R2 is straight-chain or branch-chain alkyl of C1 to C3, R3 is saturated alkyl with 12 to 22 carbon atoms, x and y are 2 to 6, and X represents negative ions combined with positive ions. The product prepared by the method is a double-ester Gemini quaternary ammonium salt softening agent; by using the Gemini structure and introducing the alcohol ethyl, the problems of poor dissolubility, strong greasy feeling and poor wetting property and air permeability of the conventional softening agent (D1821) are solved; and the softening agent has more excellent softening performance and antistatic performance compared with common ester-based quaternary ammonium salts.

The invention provides a trace element type amino acid-containing liquid water soluble fertilizer comprising the following components: cottonseed meal, corn cob, wheat bran, edible mushroom bran, silkworm chrysalis, cicada slough, waste animal fur, ferrous sulfate heptahydrate, copper sulfate pentahydrate, zinc sulfate heptahydrate, manganese sulfate monohydrate, sodium borate decahydrate, ammonium molybdate tetrahydrate, complex inoculants A and B, earthworm feces, citric acid, a pH regulator and water. Modern biotechnology is used to inoculate the compound inoculants A and B, and a two-stageaerobic fermentation production process is used to decompose plant proteins contained in agricultural waste and the edible mushroom bran and animal proteins contained in the waste animal fur into small molecule free amino acids and natural active substances and nutrients to provide comprehensive protection for the healthy growth of plants. Through chelation with trace element components, the trace element type amino acid-containing liquid water soluble fertilizer is prepared. The trace element type amino acid-containing liquid water soluble fertilizer makes full use of the agricultural waste,the edible mushroom bran and the waste animal fur to realize the reuse of resources, and is environmental-friendly and non-pollution.

The invention relates to an aeolian sandy soil repairing agent, a preparation method thereof, and an aeolian sandy soil restoring method. According to the preparation method, fly ash and municipal sludge are mixed at a mass ratio of (5-10):100 so as to obtain a mixture A; the mixture A is subjected to irradiation treatment, is cooled to room temperature, and is subjected to precipitation so as to obtain a supernatant and a precipitate via separation, wherein the precipitate is the aeolian sandy soil repairing agent; the aeolian sandy soil repairing agent is mixed with aeolian sandy soil uniformly so as to obtain a mixture B; the mixture B is dried, and is taken as plantation soil; artemisia desertorum is planted in the mixture B under natural lighting for aeolian sandy soil restoring. According to the aeolian sandy soil restoring method, the aeolian sandy soil repairing agent and aeolian sandy soil are mixed, and artemisia desertorum is planted for aeolian sandy soil restoring, changing wastes such as fly ash and municipal sludge into valuables, preventing propagating of aeolian sandy soil, and avoiding sand land deterioration.

A provided biodegradable hydraulic oil composition is composed of the following compositions in percent by weight: 0.1-5% of a phenol type or amine anti-oxidant type anti-oxidant , 0.1-5% of a P type or S-P type nonmetal extreme-pressure anti-wear reagent, 0.01-1% of an ashless clean dispersant, 0.01-1% of an ester or calcium sulfonate antirust agent, 0.01-1% of an organic metal passivator, and the balance ester base oil. The beneficial effects comprise that compared with common hydraulic oil, the product possesses protrude biodegradable characteristic (with biodegradation rate greater than 80%, OECD301B) and excellent oxidation stability (with the time longer than 6500 h when the acid value is 2.0 mg KOH / g, ASTMD943(dry)).

The invention belongs to the field of soil restoration, particularly relates to a method for strengthening oil-polluted soil restoration by plants by utilizing mineralized refuse. The method provided by the invention includes the following steps: a) after screening the mineralized refuse, mixing the mineralized refuse with the oil-polluted soil to obtain the mixed soil, wherein the mesh size for screening is 10-20 mm, and the landfill age of the mineralized refuse is 5 to 15 years; b) planting plants into the mixed soil; after petroleum hydrocarbon in the mixed soil is degraded, restored soil is obtained. According to the invention, by adding mineralized refuse with a specific particle size and a landfill age to the oil-polluted soil, the growth of soil microbes and soil plants are greatly improved, thereby increasing the degradation effect and degradation rate of petroleum hydrocarbon in the soil; in addition, adding mineralized refuse to the oil-polluted soil can dilute the concentration of petroleum hydrocarbon in the soil, reduce the inhibitory effect of petroleum pollutants on soil microbes and plants, and expand the application range of plant restoration.

The present invention is one kind of bisalkyl methyl ethoxyl quaternary ammonium salt and its synthesis process. The bisalkyl methyl ethoxyl quaternary ammonium salt has a structural formula as follows. In the formula, R is C8-C18 saturated or unsaturated alkyl with straight chain or branched chain. The process has short reaction period, low temperature and low pressure; and the bisalkyl methyl ethoxyl quaternary ammonium salt has high biodegradability, low ecological toxicity and environmental compatability.

The invention discloses balanced-nutrient instant water-soluble fertilizer powder which is prepared from the following raw materials in parts by weight: 100-150 parts of straw, 20-30 parts of water-soluble trace elements, 2-3 parts of a chelating agent, 40-60 parts of earthworm excrement, 10-20 parts of bamboo charcoal, 6-9 parts of composite bacterial floras and proper amounts of lignin peroxidase and cellulase. According to the powder, the straw is subjected to enzymolysis through ultrasonic waves, so that the enzymolysis time can be greatly shortened while the enzymolysis rate is increased;due to freezing drying and vacuum drying, active substances and nutrient components beneficial to crops in the raw materials can be maintained to the maximum extent; due to superfine crushing, the fertilizer powder is small in particle size, high in dissolution degree, high in dissolution speed, in addition easy to absorb by the crops, small in amount of finished product fertilizers, high in croputilization rate and high in stability; and equipment such as a nozzle is not blocked, the soil fertility can be improved while the stress resistance of the crops can be improved, micro-ecological environments of soil can be improved in long-term use of the fertilizer powder, the number of microorganisms in the soil can be increased, and the pollution situations of conventional soil can be remarkably improved.

The invention discloses a foam type peracetic acid disinfectant as well as a preparation method and a use method thereof. The foam type peracetic acid disinfectant comprises 35wt%-45wt% of hydrogen peroxide, 30-40wt% of acetic acid, 2wt%-5wt% of a stabilizer, 1wt%-5wt% of phosphoric acid or sulfuric acid, 0.1wt%-0.4 wt% of ethylenediamine tetra (methylene phosphonic acid), 3wt%-8wt% of disodium 4-dodecyl-2,4'-oxydibenzenesulfonate, 0.1%-0.5% of perfluoroalkyl ethanol polyoxyethylene ether amine sodium phosphate and the balance of water. The foam type peracetic acid disinfectant provided by the invention is low in ecological toxicity, environment-friendly, easy to store, long in service cycle and good in stability, the diluted spraying liquid can maintain a foam form of more than 5 minutes on the surface of an object, the sterilization action time of peracetic acid is prolonged, the sterilization and disinfection effects are effectively ensured, and the practicability is good.

The invention discloses a quaternary ammonium salt cationic surfactant and a preparation method thereof. The preparation method comprises the following steps: adding a dimethylamine aqueous solution and linear chain dimethyl alkyl tertiary amine selected from 10 to 18 carbon atoms into 1-chlorine-2,3-epoxypropane, wherein the molar ratio of the linear chain dimethyl alkyl tertiary amine to the 1-chlorine-2,3-epoxypropane to the dimethylamine is 1.0:(4.0 to 20.0):(3.01 to 20.01); heating to 70 to 90 DEG C and reacting; and finally removing non-reacted materials to obtain the surfactant. The method does not need high pressure and high temperature and avoids three wastes, so the method has the characteristics of environmental friendliness, and safe and simple process. The cationic surfactant obtained by the method has low ecotoxicity, no irritation to a human body and good water solubility, has high charge density, has cleaning, foaming, sterilizing, algae-control, anti-static and anti-fog functions, particularly embodies good cost performance on space disinfection and water sterilization, and has the characteristics that the surfactant is non-toxic and harmless to a human body, is easy to decompose and has good anti-fog and anti-static effects.

The invention relates to the field of cationic surfactants, in particular to a phosphate-based quaternary ammonium salt cationic surfactant and a synthesizing method thereof. The phosphate-based quaternary ammonium salt cationic surfactant structurally contains phosphate groups and quaternary ammonium salt groups. The phosphate-based quaternary ammonium salt cationic surfactant has the advantages that by adopting a two-step synthesizing method, the synthesizing technology is simple, the separating and purifying of the product are easy, and the used organic solvent can be recycled and reutilized; the surface activity of the synthesized product is higher, the biodegradability is good, the ecological toxicity is low, and the lime soap dispersing force is good; the emulsion property of the product is good, the surfactant can be singly used as an emulsion agent, and can be compounded with chemical articles with special application property, and the sterilization function is good.

The present invention relates to azo dyes, in particular azo dyes of Formula (I) or (II), a tautomer, a quaternary amine, or a salt thereof,wherein R1, R2a, R2b, R3, R4, R5, R3, R7, R8, R9, R10, R11 have the same meaning as in the claims. The present invention also relates to processes for preparing said compounds, compositions containing them and their use as dyes.

An environment-friendly tableware detergent is composed of the following raw materials of, by weight, 15-30 parts of virgin coconut oil ethoxylate (COE), 3-8 parts of linear alkylbenzene sulfonate (LAS), 10-20 parts of ethanol, 0.1-1 part of ethylene diamine tetraacetic acid tetrasodium salt, 5-10 parts of trisodium citrate, 1-3 parts of sodium chloride, 1-5 parts of essence and 40-60 parts of water. Preferably, the COE is 25 parts, and the LAS is 5 parts. According to the environment-friendly tableware detergent, the COE is used as the main surface activity agent, and a small amount of the LAS is added, so that the detergent is small in irritation, easy to bio-degrade, low in ecotoxicity and capable of avoiding destroying environment and reducing the irritation on skins.

The invention belongs to the technical field of environmental pollution improvement, and particularly relates to a repair agent for soil polluted due to preparing heavy metal via utilizing attapulgite. An attapulgite-based soil heavy metal repair agent is prepared through multiple steps of raw ore breaking, acidizing, drying and sieving, roasting and soil heavy metal repair and the like. Accordingto the attapulgite-based soil heavy metal repair agent subjected to acidification and thermal modification, attapulgite clay is subjected to sulphuric acid acidizing and has the characteristics of large specific surface area and high porosity, both the activity and adsorptive property of the repair agent are relatively greatly improved, the proportion of soluble heavy metal in soil can be effectively lowered, the effect of passivating soil heavy metal is achieved, and the soil heavy metal pollution is repaired.

The invention belongs to the field of soil remediation, and particularly relates to an in-situ remediating method for oil-contaminated soil. The in-situ remediating method for the oil-contaminated soil comprises the following steps that (a) mineralized rubbish is screened and then mixed with the oil-contaminated soil in in-situ to obtain mixed soil; after petroleum hydrocarbon in the mixed soil is degraded, remediated soil is obtained; the screening mesh size is 10-20mm; and the landfill age of the mineralized rubbish is 5-15 years. According to the in-situ remediating method for the oil-contaminated soil, the mineralized rubbish with the specific particle size and the landfill age is taken as the soil remediating agent to degrade petroleum hydrocarbon in the oil-contaminated soil, and the good remediating effect on the oil-contaminated soil is achieved. The experimental results show that under the same conditions of remediation, the degrading effect and the degrading speed of the petroleum hydrocarbon in soil with mineralized rubbish added are significantly higher than those of soil without the mineralized rubbish, the ecological toxicity of the soil is greatly reduced, and the activity of petroleum hydrocarbon degrading enzymes, the quantity and diversity of petroleum hydrocarbon degrading bacteria, and the quality and fertility of the soil are increased significantly.

The invention relates to a method for repairing DDTs contaminated soil by using a composite lotion, and application thereof, and belongs to the technical field of environmental chemistry. According to the invention, the absorption of plants to DDTs and the degradation of the plants in rhizosphere soil are improved by utilizing the solubilizing effect of the synergistic composite lotion compounded by the surfactant Tween80 and the green organic solvent ethyl lactate on strong-hydrophobicity DDTs in a manner of promoting the plants to repair the DDTs polluted soil through the synergistic composite lotion; and the synergistic composite lotion is regularly applied to soil in a spraying mode, meanwhile, the moisture content of the soil is strictly controlled, the percolation phenomenon is avoided, plant growth is facilitated, mixing, conveying and uniform distribution of effective components in the synergistic composite lotion are facilitated, the risk of secondary pollution is reduced, and the remediation efficiency is improved. The method has the advantages of being economical, efficient, easy to operate, wide in applicable soil type, capable of achieving in-situ remediation, small in influence on the original environment, capable of reducing the risk of secondary pollution and beneficial to soil recycling.

The invention discloses a compound quaternary ammonium salt disinfectant and a preparation method and a use method thereof, the compound quaternary ammonium salt disinfectant comprises 16 wt%-20 wt% of a quaternary ammonium salt bactericide, 0.5 wt%-3 wt% of a metal ion chelating agent, 0.5 wt%-10 wt% of a water-soluble ampholytic surfactant and a strong alkali solution for adjusting the pH value of a mixed solution to 8-10, the compound quaternary ammonium salt disinfectant further comprises 0.5 wt%-1.5 wt% of benzotriazole, 1 wt%-5 wt% of polyglycerol ether and the balance of water, and the molar ratio of ethyoxyl to glyceryl in the polyglycerol ether is 26: 1, and the balance is water. The compound quaternary ammonium salt disinfectant provided by the invention is low in ecological toxicity, good in environmental compatibility, good in bactericidal activity at low concentration after being diluted, has a corrosion inhibition effect on metal aluminum, can be used for surface disinfection of aluminum products, is wide in application range, can be used in a low-temperature environment in cooperation with a diluent, and is good in practicability.