8results about How to "High partition coefficient" patented technology

The invention provides a full-chain integrated iron and aluminum slag recovery method which comprises the following steps: S1, mixing iron and aluminum slag with first alkali liquor to carry out first alkaline leaching reaction, and carrying out solid-liquid separation to obtain first metal hydroxide slag and first alkaline leaching liquor; s2, mixing the first metal hydroxide slag with second alkali liquor, carrying out second alkali leaching reaction, and carrying out solid-liquid separation to obtain an aluminate solution and second metal hydroxide slag; s3, pulping the second metal hydroxide slag, adding acid for acid dissolution, adding phosphate, seed crystal and a complexing agent for iron precipitation reaction, performing solid-liquid separation to obtain iron phosphate slag and nickel-cobalt-manganese extraction pre-liquid, and calcining the iron phosphate slag to obtain anhydrous iron phosphate. According to the method, metal elements can be completely recycled, and the recycled product can be applied to an existing industrial chain.

The invention belongs to the technical field of environmental engineering and chemical separation, and particularly relates to a deep-eutectic solvent composition for efficiently extracting phenolic compounds and a preparation method of the deep-eutectic solvent composition. The deep-eutectic solvent composition for efficiently extracting the phenolic compounds, provided by the invention, consists of a hydrogen bond acceptor and a hydrogen bond donor in a molar ratio of (1-2): (1-9), the hydrogen bond donor comprises n-caprylic acid or n-hexyl alcohol; the hydrogen bond receptor comprises 1-ethyl-3-methylimidazole chloride or tetrabutylammonium bromide. The eutectic solvent composition has the advantages of high partition coefficient, low viscosity, high selectivity, rapid phase separation, environmental friendliness and the like, can efficiently extract phenol, resorcinol, o-cresol, m-cresol and p-cresol, and has single-stage extraction efficiency gt; the regeneration rate is high, and the method is suitable for high-concentration phenolic wastewater, polyhydroxy phenolic wastewater, continuous process and low-toxicity emission requirement scenes.

The invention discloses a mixed-phase molybdenum diselenide adsorption material as well as a preparation method and application thereof, and belongs to the technical field of environmental functional materials and water treatment. The mixed-phase molybdenum diselenide adsorption material is composed of a metal phase (1T phase) and a semiconductor phase (2H phase), the 1T phase is a main crystal phase, and molybdenum diselenide is of a nanosheet layer structure. According to the preparation method, NaBH4 is taken as an electron donor for the first time, the content of a 1T phase in molybdenum diselenide is regulated and controlled, and the molybdenum diselenide nano material with a high 1T phase proportion is simply and controllably constructed; the mixed-phase molybdenum diselenide adsorbing material disclosed by the invention has obvious advantages in the aspect of adsorbing and removing lead ions in water, is high in adsorption speed, small in material consumption, high in adsorption capacity and extremely high in selectivity, and also has a very good effect in natural water bodies and industrial wastewater.

The invention discloses a preparation method of a phosphonate-modified acylhydrazone covalent organic polymer and application of the phosphonate-modified acylhydrazone covalent organic polymer to adsorption and separation of heavy rare earth ions, and belongs to the field of environmental protection. According to the invention, 2, 4, 6-tri (4-formyl phenyl)-1, 3, 5-triazine and tetraethyl ((2, 5-bis (hydrazino carbonyl)-1, 4-phenylene) bis (oxy) bis (ethane-2, 1-disubunit)) bis (phosphonate) are subjected to a Schiff base reaction to prepare a phosphonate modified acylhydrazone covalent organic polymer; a phosphonate functional group is modified on a framework of the acylhydrazone covalent organic polymer, and the acylhydrazone covalent organic polymer can be used for high-efficiency adsorption separation of heavy rare earth ions in a water phase; the phosphonate-modified acylhydrazone covalent organic polymer is simple in preparation method, has excellent adsorption separation performance on heavy rare earth ions, and is expected to be used as an efficient adsorbent for southern ion adsorption type rare earth ore low-concentration wastewater.

The present application relates to a kind of solvent and method for separating high purity oleuropein with high efficiency.The mixed solvent is selected from: (1) the mixed solvent consisting of n-butanol, dichloromethane, methanol and water, wherein the volume ratio of n-butanol, dichloromethane, methanol and water is 1: (5-15): (1-5): (5-15), preferably 1: (5-10): (1-2): (5-10);(2) the first solvent, the first solvent is the upper layer after the mixed solvent of (1) is left to separate;(3) the second solvent, the second solvent is the lower layer after the mixed solvent of (1) is left to separate;And (4) the combination of first solvent and second solvent.The present application also includes the method for separating oleuropein using the mixed solvent.

The invention discloses a chitosan-bionic MOFs adsorbent as well as a preparation method and application thereof, and relates to the technical field of uranium extraction from seawater. The preparation method comprises the following steps: putting ellagic acid into a container, adding copper nitrate, water, glacial acetic acid and DMF (Dimethyl Formamide), stirring and heating, cooling to room temperature, adding chitosan, stirring at room temperature, and centrifuging to obtain a solid, namely the chitosan-bionic MOFs adsorbent. The adsorbent has high selective adsorption performance on uranium, has high stability in water and can be used for extracting uranium from seawater.

The utility model provides a phenol tower distributor for a phenol ammonia recovery system, which comprises a phenol tower and an MIBK feed distributor, the phenol tower comprises a bottom fixed part, a barrel and a top elliptical head part, a support convenient for supporting and fixing the MIBK feed distributor is arranged in the barrel, the MIBK feed distributor comprises an MIBK main tank, a first branch tank, a second branch tank and a third branch tank, and the first branch tank, the second branch tank and the third branch tank are communicated with each other. The phenol tower distributor rectification method is mature in technology and simple to operate, the purity of the regenerated extractant is high, and the influence on the extraction effect is small when the extractant is recycled; the alkali washing back extraction method has the characteristic of low energy consumption, but the impurity content of an extracting agent regenerated by the back extraction method is higher, and the recovered crude phenol exists in the form of a sodium phenolate solution. And compared with MIBK, the diisopropyl ether has the advantage that the distribution coefficient of the diisopropyl ether to polyphenol is low.

This invention belongs to the field of disinfectant technology and discloses a rapid-production heat-stable composite iodine composition for aquaculture and its preparation method. The invention discloses a composite iodine composition comprising the following components: surfactant, iodine, iodide, inorganic acid, solvent, and stabilizer; the solvent includes dimethylimidazolinone. The composite iodine composition provided by this invention achieves a synergistic effect of "1+1+1>3" through a triple iodine volatilization inhibition mechanism of hydroxypropyl-β-cyclodextrin inclusion locking, dimethylimidazolinone solvation stabilization, and a physical barrier at the fatty alcohol polyoxyethylene ether interface. It completely dissolves iodine (>99.9%) within 5 minutes and exhibits excellent stability under high salt, high temperature, low temperature, and light conditions.