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213 results about "N-pentanoic acid" patented technology

Valeric acid, or pentanoic acid, is a straight-chain alkyl carboxylic acid with the chemical formula CH. 3(CH. 2) 3COOH. Like other low-molecular-weight carboxylic acids, it has a very unpleasant odor.

Method for increasing sewage-reinforced biological phosphor-removing effect by resource utilizing mud organic substance

This invention belongs to new style green technology region, concretely relates to a method of using sludge organic matter to advance biologic dephosphorization effect of sewage. Excess sludge at basicity condition is carried out anaerobic fermentation to produce organic acid; adopt guano precipitation means to reclaim nitrogen and phosphorus of organic acid; add the treatment fluid after reclaiming nitrogen and phosphorus to municipal sewage, under anaerobic-aerobic condition aerobic conditito carry out biological sewage treatment,through solid-liquid separation, the out water reaches the mark and is discharged. This invention through the method of adding excess sludge broth to sewage, not only advance the ability of microbe of synthesizing poly- hydroxy valeric acid(PHV)under anaerobic condition, advance availability of poly- hydroxy eicosanoic acid, decrease glycogen metabolization quantity, in favor of maintaining higher dephosphorization effect at aerobic condition, reduce phosphorus concentration in the out water, prevent water substance eutrophication occurring, but also decrease sludge volume, thereby decrease sludge treatment cost and pollute to environmental.
Owner:TONGJI UNIV

Method for producing volatile fatty acid through promoting anaerobic fermentation of kitchen wastes

The invention relates to a method for producing volatile fatty acid through promoting the anaerobic fermentation of kitchen wastes. The method comprises the steps of firstly, crushing the kitchen wastes to be up to the particle size of 1-5mm; then, regulating the content of solids to 100mg/L; next, placing the crushed kitchen wastes into an anaerobic fermentation reactor, adding 10-40g/L of marketing zero-valent iron with the particle size of 800 meshes, fermenting at the temperature of 15-40 DEG C for 4-17 days while stirring at the rotating speed of 120r/min, centrifuging, recycling the zero-valent iron in filter residues, and taking out the residual organic components to be composted or used as a liquid fertilizer to obtain the volatile fatty acid with the yield of 29.1-35.8g/L in a supernatant liquid, wherein the volatile fatty acid is detected to contain 32% of acetic acid, 17% of propionic acid, 27% of n-butanoic acid and 20% of n-pentanoic acid when the yield of the volatile fatty acid in the supernatant liquid is 29.1g/L. Compared with the conventional anaerobic fermentation for the kitchen wastes, the method has the advantages that the content of the volatile fatty acid in the supernatant liquid is increased by 2.3-13 times, the recycling of the kitchen wastes is effectively realized, and the method is low in cost, high in speed and high in social, economic and environmental benefits.
Owner:TONGJI UNIV

Method for recycling hexanediamine key intermediate reaction residues and co-producing carboxylic acid

The invention relates to a method for recycling hexanediamine key intermediate reaction residues and co-producing carboxylic acid. The method comprises the following steps: introducing residues and water into a first fixed bed reactor, and carrying out a depolymerization reaction; carrying out heat exchange on the obtained depolymerization reaction liquid, then introducing into a second fixed bedreactor, and carrying out a hydrolysis reaction; carrying out a hydrogenation reaction on the obtained hydrolysis reaction solution, carrying out negative pressure distillation on the obtained hydrogenation reaction solution after the reaction is finished, and removing water to obtain a concentrated solution; and carrying out negative pressure rectification on the obtained concentrated solution, and collecting fractions at different gas phase temperatures to obtain corresponding products of aminocaproic acid, n-valeric acid and n-caproic acid. According to the invention, the method effectivelysolves the problem of key intermediate reaction residue pollution generally existing in existing hexanediamine production, realizes recovery and resource utilization of the key intermediate reactionresidue of hexanediamine, obtains a high-added-value product, reduces the production cost, increases the economic benefit, reduces the emission of three wastes, substantially reduces the pollution tothe environment and provides a guarantee for green and safe production.
Owner:JIANGSU YANGNONG CHEM GROUP +3

Method for preparing biomass fuel oil molecules from biomass platform compound through hydrogenation

ActiveCN110117266AHelps ease harsh conditionsExtend your lifeOrganic chemistryMolecular sieve catalystsVernolic acidPropanoic acid
The invention provides a method for preparing gamma-valerolactone, valeric acid and valerate from biomass platform molecules. According to the method, the gamma-valerolactone is prepared with levulinate as the reaction raw material, the valeric acid and valerate are prepared with the gamma-valerolactone or levulinate as the raw material, and the process of preparing the gamma-valerolactone from the levulinate, preparing the valeric acid and valerate from the gamma-valerolactone through hydrogenation or efficiently preparing the valeric acid and valerate from the levulinate at high selectivityand high yield through one step is realized. Valerate compounds can serve as biological fuel oil and have high compatibility with an existing fuel oil system; the valeric acid and valerate are prepared through the reaction, and the method has the remarkable advantages that the raw materials serve as the biomass resources and the atom economy is good. Meanwhile, compared with other technologies ofpreparing the valeric acid and valerate with levulinic acid as the raw material, the method has the advantages that the method is simple in reaction process, high in target product yield and mild in reaction condition and medium, and a catalyst is simple in preparing process and stable.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI

Functional oligomer used for non-viral gene vector material and application thereof

The invention provides a functional oligomer used for a non-viral gene vector material. The functional oligomer is prepared by free radical polymerization of MA-His-OMe and MAEL through taking water-soluble thio ester as a molecular weight regulating agent. In the preparation method, MA-His-OMe and MAEL are used as monomers, AIBN (2,2-azobisisbutyronitrile) or ACVA (4,4'-azobix(4-cyano valeric acid)) is used as an initiator, and CPADB (4-cyanopentanoic acid dithiobenzoate) is used as a chain transfer agent. According to the invention, the functional oligomer is mixed with a polycation material to prepare a DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) composite which is used as the non-viral gene vector material and a cell transfection experiment is carried out. The functional oligomer has the advantages that the functional oligomer has a good protection effect on plasma DNA and can be used for improving the binding action of a complex particle and a cell membrane surface and improving the escape efficiency of the plasma DNA from lysosme / endosome in a cell, thus the transfection efficiency of the complex particle on cells such as HeLa is greatly improved, and the toxicity of the functional oligomer is greatly reduced, therefore the functional oligomer is expected to reach a clinical application level.
Owner:NANKAI UNIV

Liquid for activating plant and method for producing the same

InactiveCN101438708APromote growthPromote photosynthetic reactionBiocidePlant growth regulatorsPropanoic acidCarbonization
The invention relates to a plant activate fluid which comprises organic acids, alcohol, phosphoryl compounds, phenols, a small amount of inorganic matter and water. According to weight percentage, the organic components comprise 48 percent to 55 percent of acetic acid, 0.9 percent to 4.0 percent of formic acid, 0.8 percent to 3.1 percent of propionic acid, 0.04 percent to 0.08 percent of valeric acid, 0.46 percent to 0.8 percent of butylric acid, 0.04 percent to 0.2 percent of crotonic acid, 0.9 percent to 2.1 percent of methanol and 1.8 percent to 2.4 percent of acetaldehyde; and the organic components further comprise 0.3 percent to 1.6 percent of pyridine, 1.6 percent to 3.2 percent of furan, 0.83 percent to 1.87 percent of phenol, 0. 4 percent to 1.6 percent of 2-furfural alcohol, 1.2 percent to 2.9 percent of 2(3H)2 hydrogen furanone, 1.6 percent to 2.8 percent of 2(5H)2 hydrogen furanone, 0.09 percent to 0.32 percent of tetrahydrofuran, 0.1 percent to 1.5 percent of 2-tetrahydrofurfuryl alcohol, 0.89 percent to 2.1 percent of furfurol, 0.3 percent to 1.7 percent of methyl acetate and 0.2 percent to 1.5 percent of hydroxy methyl acetate. The invention takes branch and leaf wastes of ligneous plants as the raw material for carbonization, the smoke is collected during the carbonization process, and the plant activate fluid is obtained through water-cooling, temperature reduction and condensation.
Owner:陈首畅 +1
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