15 results about "Ion calcium" patented technology

The invention discloses a composite inducer for promoting adhesion and metamorphosis of marine bivalve mollusk larvae and an application method of the composite inducer. The composite inducer for promoting adhesion and metamorphosis of the marine bivalve mollusk larvae comprises glutamine, glutamic acid, potassium chloride, calcium chloride and taurine, and the concentration ratio of the glutamine to the glutamic acid to the potassium chloride to the calcium chloride to the taurine is 1: 1: 2 * 10: 1.7 * 10: 4. According to the application, glutamine, potassium ions, calcium ions, glutamic acid and taurine are matched, the application effect of the glutamine, the potassium ions, the calcium ions, the glutamic acid and the taurine in the aspect of improving the attachment and metamorphosis rate of the shellfish larvae is defined, the technical blank of multi-component cooperative regulation and control of the attachment and metamorphosis of the shellfish at present is filled, a new solution is provided for bivalve shellfish fry production, and the application prospect is wide. The method is of great significance in promoting healthy development of the mariculture industry.

The invention discloses a ferrous sulfate purification method and a ferrous sulfate purified product, and the method comprises the following steps: dissolving a titanium dioxide by-product in deionized water to obtain a ferrous sulfate saturated solution; under the condition that reducing gas is introduced into the ferrous sulfate saturated solution, mixing sodium sulfide with the ferrous sulfate saturated solution, and filtering to obtain a first purified solution; mixing sodium sulfide with the first purified solution, and filtering to obtain a second purified solution; and carrying out concentration crystallization on the second purified solution, and carrying out suction filtration and drying to obtain a ferrous sulfate purified product. Iron powder does not need to be added, oxidation of ferrous ions is inhibited through reducing gas, sodium sulfide is added in stages to enable impurities with high activity to react to generate sulfide precipitates, the sulfide precipitates are filtered, the content of impurities such as titanium ions, magnesium ions, manganese ions and calcium ions is greatly reduced, the impurity removal effect is good, and finally concentration and crystallization are conducted through solubility difference. The purification purity of the ferrous sulfate purified product is generally as high as 99% or above.

A method for recovery of rare earth elements from apatite mineral comprises dissolving (S10) of apatite mineral of magmatic origin in an acid comprising hydrochloric acid. The dissolving results in a first liquid solution comprising phosphate, calcium and chloride ions, rare earth elements, arsenic and iron. The arsenic and any ferric iron are removed. The first liquid solution is treated (S20) into a second liquid solution by extracting (S22) of a major part of the phosphate ions with an organic solvent. The treating of the first liquid solution into the second liquid solution further comprises partially neutralizing (S75) a raffinate resulting from the extracting of a major part of the phosphate to a pH > 1.5, causing precipitation of phosphates of rare earth elements, and filtering (S76) the precipitated phosphates of rare earth elements from the raffinate.

The invention relates to a seawater-based ionic composition for the manufacture of medical devices intended for administering said composition to patients, and to restorative and soothing cosmetics, comprising a specific concentration of chloride (Cl), sodium (Na), sulfate (SO4), sulfur (S), magnesium (Mg), calcium (Ca), potassium (K), and bicarbonate (HCO3). This composition is reproducible, stable, well-tolerated, and can be used alone or in combination with other ingredients.

The application belongs to the field of rare earth smelting, and particularly discloses a preparation method of low-chlorine precipitated lanthanum carbonate, which comprises the following steps: preparing a precipitant, a mixed solution of sodium bicarbonate and sodium carbonate and an additive A; adding bottom water and crystal seeds into a reaction tank; preparing a material solution, adding an additive B into the lanthanum chloride material solution; under heating, the precipitant and the material solution are added into the reaction tank in a parallel flow mode; after the reaction is completed, the precipitate is filtered out and washed with clean water for more than five times, and the obtained product is placed into an oven for drying. The obtained product is the low-chlorine precipitated lanthanum carbonate with REO of 52-56%, chlorine ions of 0.005%-0.015% and calcium ions less than 0.015%. The preparation method has the advantages of simple process and convenient operation, and can prepare the low-chlorine and low-calcium lanthanum carbonate from the high-concentration and high-calcium-content lanthanum chloride material solution used in industrial production; and the precipitated lanthanum carbonate has very low contents of chlorine ions and calcium ions, and can meet the requirements of the La2O3-4N grade in the national standard GB / T 4154-2015 after calcination.

The invention discloses a fused salt heat storage system and method for removing calcium and magnesium impurities in fused salt on line, and relates to the technical field of fused salt heat storage. According to the fused salt heat storage system, the reactor is arranged in the communicating pipeline between the heating device and the heat exchanger, and the calcium and magnesium removing reagent is arranged in the reactor. When the molten salt heat storage system is operated, the calcium and magnesium removal reagent can selectively react or adsorb magnesium ions and calcium ions in high-temperature molten salt, but basically does not react with a molten salt main body, so that the aim of removing impurities of the calcium ions and the magnesium ions in the molten salt on line is fulfilled; the storage tank corrosion problem caused by magnesium ion and calcium ion impurities is effectively inhibited, and the operation safety and the service life of the fused salt heat storage system are improved. After the molten salt heat storage system provided by the invention runs for 3 months, the content of calcium and magnesium ions in the molten salt can be lower than 0.01%, and the removal amount exceeds 99%; and after one year of operation, the content of calcium and magnesium is kept to be lower than 0.01%, and the storage tank is not obviously corroded.

Methods of treating lead poisoning are described. The methods involve administering to a patient in need thereof a therapeutically effective dose of a pharmaceutical composition comprising a particulate metal titanate ion exchanger having an empirical formula on an anhydrous basis of: AmTixMyOz where A is an exchangeable cation selected from the group consisting of potassium ion, sodium ion, lithium ion, calcium ion, magnesium ion, hydronium ion or mixtures thereof, and M is optionally at least one framework metal selected from niobium (5+), zirconium (4+), tin (4+), iron (3+), iron (2+), cobalt (2+), and manganese (2+).

The invention discloses a preparation method of hydrogel loaded with a peptide calcium chelate, and belongs to the field of biological materials. The hydrogel loaded with the peptide calcium chelate prepared by the invention solves the key problems of poor stability, low bioavailability and the like of the current peptide calcium chelate in a gastrointestinal tract environment, and provides an innovative solution for improving the calcium absorption promoting efficiency of the peptide calcium chelate. The hydrogel loaded with the peptide calcium chelate prepared by the invention solves the potential adverse effects of gastrointestinal tract stimulation, calculus risk increase, competitive absorption with other trace elements and the like possibly caused by an ionized calcium supplement in a body. Compared with the inherent defects of poor water solubility, easiness in precipitation, low absorptivity and the like generally existing in the traditional calcium supplement, the hydrogel realizes slow and controllable release of the calcium element by virtue of a unique three-dimensional network structure, and provides a safer, more efficient and milder new calcium supplement scheme for an organism.

This invention relates to the field of wastewater treatment technology, and more particularly to a method and application for recovering phosphorus from phosphogypsum leachate for the preparation of lithium iron phosphate. The method includes the steps of: removing impurity ions from the phosphogypsum leachate to obtain a first treated liquid; the impurity ions include fluoride ions, calcium ions, and magnesium ions; setting a cathode and iron as the anode in the first treated liquid, and mixing the resulting lapis lazuli precipitate with lithium phosphate and a carbon source, followed by calcination, to obtain lithium iron phosphate. By adjusting the pH to first remove impurity ions from the phosphogypsum leachate, and then using iron as a sacrificial electrode, a large amount of Fe is generated in situ using an electrochemical method. 2+ With PO4 in the first treatment solution 3‑ The reaction enables the recovery of phosphorus from phosphogypsum leachate in the form of vivianite, which is then used as a raw material to prepare lithium iron phosphate via the molten salt method.

The invention provides normal-temperature high-protein milk with a long shelf life and a preparation method thereof, and the preparation method comprises the following steps: carrying out ultrafiltration treatment on pasteurized milk to obtain trapped fluid and permeated fluid; concentrating the permeate liquid to obtain concentrated permeate liquid; carrying out heat treatment on the concentrated permeate to obtain a permeate subjected to heat treatment; cooling and centrifuging the permeate liquid subjected to heat treatment to obtain permeate liquid without ionized calcium; mixing the trapped fluid with the permeate liquid without ionized calcium to obtain a semi-finished product; carrying out heat treatment on the semi-finished product to inactivate the fibrin lyase, so as to obtain a semi-finished product without the fibrin lyase; and carrying out steam immersion type sterilization and / or steam jet type sterilization on the semi-finished product without the blood-activating fibrinolytic enzyme, and cooling to obtain the high-protein milk with the normal temperature and the long shelf life. The preparation method disclosed by the invention can effectively reduce caking and precipitation in the high-protein milk at normal temperature and prolong the shelf life.

A method for recovery of commercial substances from apatite mineral comprises dissolving of apatite mineral in an acid comprising hydrochloride. The dissolution gives a first liquid solution comprising phosphate, calcium and chloride ions. The first liquid solution is treated into a second liquid solution comprising calcium and chloride ions. This treatment in turn comprises extracting of a major part of the phosphate ions with an organic solvent. A bleed solution is removed from the second solution. Solid gypsum comprising at least 70% in a di-hydrate crystal form is precipitated from the second solution. This precipitation of solid gypsum comprises adding the second solution and sulfuric acid simultaneously into a continuous-stirred reactor in the presence of gypsum crystals. Thereby, the precipitation of solid gypsum gives a third liquid solution comprising hydrochloride. An arrangement for recovery of commercial substances from apatite mineral is also presented.

The invention relates to the technical field of wastewater treatment, in particular to a treatment method of fluorine-containing wastewater. The treatment method comprises the following steps: adding water-soluble barium salt into the fluorine-containing wastewater to carry out precipitation reaction, and carrying out solid-liquid separation after the reaction to obtain pre-desulfurization intermediate treatment liquid and a barium sulfate product; the fluorine-containing wastewater contains fluorine ions, calcium ions and sulfate ions; and evaporating and concentrating the pre-desulfurized intermediate treatment liquid, and then cooling and carrying out solid-liquid separation in sequence to obtain a calcium fluoride product and treated effluent. According to the method, a collaborative recovery system driven by step-by-step selective precipitation and solubility product difference is constructed, barium salt is utilized for pretreatment, interference of sulfate ions in wastewater is eliminated, high-purity barium sulfate is recovered, and preferential precipitation and efficient separation of calcium fluoride are achieved by combining an evaporation and concentration process subsequently. According to the process, calcium source reagents such as lime and calcium chloride do not need to be added, and the technical bottleneck that the yield and purity of calcium fluoride recovered in fluorine-containing wastewater treatment are difficult to obtain at the same time is broken through.

The invention relates to dry chemical test paper capable of synchronously detecting creatinine, sodium ions, calcium ions, vitamin C, glucose and specific gravity in urine and a preparation method of the dry chemical test paper, and belongs to the technical field of in-vitro diagnostic reagents. The test paper comprises a PET base material subjected to ultraviolet / corona treatment, six detection areas sequentially arranged along the base material and a barrier plate between every two adjacent detection areas, the six detection areas are creatinine, sodium, calcium, vitamin C, glucose and urine specific gravity reagent blocks respectively, and each reagent block is prepared by sequentially infiltrating and drying two reagent solutions containing a buffer solution, a surfactant and a stabilizer. Through the processes of structure optimization, formula improvement, gradient drying and the like, the test paper has the advantages of being high in integration level, accurate in interference resistance, long-acting and stable, the detection speed is high, operation is easy and convenient, and the problems that in the prior art, multi-index detection is tedious in operation, serious in interference, poor in stability and the like are solved.

A method for removing Pb2 + ions from a fluid, such as a gastrointestinal tract fluid, is described. The method comprises contacting the gastrointestinal tract fluid with a particulate metal titanate ion exchanger represented by the empirical formula: AmTixMyOz wherein A is an exchangeable cation selected from the group consisting of potassium ions, sodium ions, lithium ions, calcium ions, magnesium ions, hydrogen hydrate ions, and mixtures thereof, and M is optionally at least one framework metal selected from niobium (5 +), zirconium (4 +), tin (4 +), iron (3 +), iron (2 +), cobalt (2 +) and manganese (2 +). The particulate metal titanate ion exchangers of the present disclosure are synthesized in the presence of complexing agents including at least one polyhydroxy-containing complexing agent (MHCA) that promote metal transport and incorporation while conferring beneficial properties such as large aggregate sizes, exhibiting good particle size distribution, and large porosity.

The purpose of the present disclosure is to provide a composition, a seed composition, a method for promoting plant growth, and a method for soil improvement that are capable of promoting plant growth by combined use of a biosurfactant and a specific ion.　One aspect of the present disclosure is a composition comprising a biosurfactant and one or more ions selected from the group consisting of sodium ions, potassium ions, magnesium ions, iron ions, manganese ions, calcium ions, ammonium ions, sulfate ions, nitrate ions, and phosphate ions, wherein the mass ratio of the total concentration of the ions to the concentration of the biosurfactant in the composition is 0.070-10.