10results about How to "Improve elution efficiency" patented technology

The invention relates to the technical field of comprehensive treatment of industrial solid wastes, and particularly discloses a comprehensive utilization method of secondary aluminum ash, which specifically comprises the following steps: deoxidizing the secondary aluminum ash; carrying out hydrolysis treatment on the deoxidized secondary aluminum ash, and carrying out solid-liquid separation to obtain mixed gas, a hydrolysis slurry solid phase and high-salt-alkali ammonia nitrogen hydrolysate; separating and purifying the mixed gas to obtain hydrogen; carrying out at least two times of acid washing treatment and at least one time of alkali washing treatment on the hydrolyzed slurry solid phase to obtain a solid phase product for the concrete admixture; and carrying out ammonia-nitrogen separation on the high-salt-alkali ammonia-nitrogen hydrolysate, and carrying out gradient acidification treatment to obtain aluminum hydroxide and inorganic salt crystals. By implementing the method, high-added-value overall utilization of the secondary aluminum ash can be realized.

The invention relates to a method for repairing polycyclic aromatic hydrocarbon contaminated soil, which comprises the following specific steps: S1, eluting the polycyclic aromatic hydrocarbon contaminated soil by using a surfactant to obtain eluted soil; s2, modifying the biochar by adopting a modification solution to obtain modified biochar; and S3, the modified charcoal obtained in the step S2, MoS2 and monopersulfate are mixed and put into the eluted soil obtained in the step S1, and remediation of the polycyclic aromatic hydrocarbon contaminated soil is completed. Compared with the prior art, when the surface active agent, the biochar and the MoS2 technology are comprehensively applied to remediation of the polycyclic aromatic hydrocarbon contaminated soil, the surface active agent is firstly used for enhancing the solubility and the bioavailability of the PAHs; then, the modified biochar is combined with a MoS2 or PMS system to form a composite remediation system, and the removal efficiency and the remediation effect of polycyclic aromatic hydrocarbons (PAHs) can be improved.

The invention discloses a continuous enhanced washing desalination system and method for waste incineration fly ash, the system comprises at least three washing units which are connected in series, each washing unit comprises a washing tank, a hydrodynamic cavitator, a circulating pump, a first mud-water separator and a second mud-water separator which are communicated to form two sections of external circulating pipelines, and a washing liquid recycling pipeline is formed. The invention further discloses a method for treating the waste incineration fly ash through the system. According to the washing desalination system disclosed by the invention, deep elution desalination treatment is carried out on fly ash by adopting continuous three-stage stirring washing, two-stage forced circulation strengthening and two-stage mud-water separation, so that the desalination treatment on the fly ash can be efficiently and thoroughly completed on the premise of effectively reducing the water consumption; the device has the advantages of being simple in equipment, easy and convenient to operate, small in occupied area, low in cost, water consumption and energy consumption, high in elution efficiency, wide in application range, capable of continuously running, good in running stability and the like, and has an important promoting effect on reduction and resource utilization of the fly ash.

The invention provides a pesticide residue detection device and a detection method and application thereof.The device comprises a cleaning mechanism, a filtering mechanism, an elution mechanism and a detection module, multiple nucleic acid aptamers are fixed to a filter element, the sequences of the nucleic acid aptamers are optimized, the pesticide fixing and specific capturing capacity is improved, proper cleaning liquid and eluent are screened, and the pesticide residue detection efficiency is improved. And the cleaning and eluting effects of residual pesticides in agricultural products are improved. When the device is used for enriching and detecting pesticide residues, the pesticide residues in the agricultural products can be accurately detected through the detection module only by carrying out nondestructive cleaning, filtering and elution on the agricultural products to obtain a sample solution to be detected, and a test strip or an electrochemical detection part containing a nucleic acid aptamer probe in the detection module can be used for accurately detecting the pesticide residues in the agricultural products. Moreover, qualitative and quantitative detection of residual pesticide can be realized respectively, the structure is simple, the detection is convenient and efficient, and the accuracy of a detection result can be ensured.

The present invention is a divisional application with application number 202010060063.1, and the present invention relates to the use of a lectin-macromolecular carrier coupling complex in isolating glycosylated exosomes from clinical samples, wherein the lectin-macromolecular carrier coupling complex comprises: a macromolecular carrier; and a lectin coupled to the outside of the macromolecular carrier. The lectin-macromolecular carrier coupling complex provided by the present invention can easily, quickly and accurately separate glycosylated exosomes from clinical samples, with high separation efficiency and good repeatability. The separated exosomes are in complete morphology without rupture or fragmentation, and can be directly used for glycosylated exosome liquid detection, or directly for immunological related detection, or directly extracting related nucleic acids in exosomes for genetic detection and analysis.

This invention discloses a bismuth-containing composite, its preparation method, and its application in chloride ion elution. The bismuth-containing composite comprises bismuth oxide and a dopant element, which is one or more of titanium, nickel, copper, iron, cobalt, carbon, and nitrogen. As a dechlorination agent, this bismuth-containing composite, by selecting a semiconductor element as the dopant, can reduce the stability of the Bi-O covalent bonds in the sample, making them more susceptible to breakage under hydrogen ion attack, leading to structural collapse and the release of more bismuth ions, thus promoting the dechlorination reaction. Furthermore, after the bismuth-containing composite participates in the dechlorination reaction, the dechlorination product easily forms a heterojunction under light excitation during elution, allowing electrons to transfer to the introduced semiconductor, forming electron-hole pairs. The remaining holes on the bismuth oxychloride undergo photocorrosion, promoting the conversion of bismuth oxychloride to bismuth oxide, facilitating recycling, and improving subsequent dechlorination efficiency.

The invention provides low-sodium pseudo-boehmite and a preparation method of the low-sodium pseudo-boehmite. The preparation method comprises the following steps: uniformly mixing a sodium-containing aluminum source, a fatty amine compound and water to obtain slurry A; wherein the mass ratio of the sodium-containing aluminum source to the fatty amine compound is (0.1-1.5): 1; adding an aluminum salt aqueous solution into the slurry A for reaction, and filtering to obtain a filter cake B; washing the filter cake B with an ammonium salt aqueous solution to obtain a filter cake C; and heating and aging the filter cake C, filtering, washing and drying to obtain the low-sodium pseudo-boehmite. The sodium-containing aluminum source is firstly mixed with the fatty amine compound, so that the elution efficiency of sodium ions from the pseudo-boehmite can be improved, and the content of the sodium ions in the pseudo-boehmite is reduced. In addition, ammonium ion exchange is introduced before pseudo-boehmite is formed, so that the exchange efficiency between ammonium ions and sodium ions is enhanced, and the sodium content is further reduced.

The utility model discloses a multi-channel large-volume nucleic acid extractor, which belongs to the technical field of nucleic acid extraction and comprises a bottom plate, and two groups of placing mechanisms distributed in parallel from left to right are mounted at the top end of the bottom plate; an extraction assembly is mounted at the upper end of the bottom plate; the extraction assembly comprises a linear moving assembly and a curve moving assembly, the linear moving assembly is connected with the bottom plate, and the linear moving assembly is connected with the curve moving assembly. Through the mode, the sample box is subjected to water area heating through the first water area heating box, the second water area heating box and the heating piece, the heating is uniform, the heating effect is good, the heating temperature is convenient to control, the magnetic bar sleeve and the magnetic bar can be driven to do sinusoidal motion in a sample liquid area, and lysate, nucleic acid and magnetic beads are fully and uniformly mixed.

This invention provides a method for separating and extracting lead-212 and bismuth-212 from monazite-processed radium slag dissolution solution, belonging to the field of medical radioisotope preparation technology. The method uses monazite-processed radium slag dissolution solution containing radium-228 decay chain substances as raw material. First, halide ions are added to the raw material and the acidity is adjusted to obtain an acidic radium slag dissolution solution. Then, the solution is pretreated with an anion exchange resin column to remove impurities. After static decay, a decay solution containing lead-212 and bismuth-212 is generated. Utilizing the halogen content and acidic environment of the solution itself, the solution is selectively adsorbed again by an anion exchange resin column. Subsequently, elution is performed using a desorption reagent, and the medium conditions are readjusted for repeated adsorption and desorption, ultimately yielding a high-purity and high-specific-activity lead-212 and bismuth-212 finished desorption solution. This invention can efficiently extract lead-212 and bismuth-212 with fast extraction speed, high recovery rate and purity, and is less likely to cause organic pollution in the product.

The present invention belongs to the technical field of waste gas treatment equipment, specifically a volatile organic compound treatment method and device thereof, comprising a tower body; a first cavity and a second cavity are arranged inside the tower body, an air outlet pipe and an air inlet pipe are respectively arranged at the top and bottom of the first cavity, a liquid outlet pipe and a steam pipe are arranged at the bottom of the second cavity, and a liquid inlet pipe is arranged on the inner wall of the second cavity; an annular groove is arranged between the first cavity and the second cavity, and a ring block is rotatably connected in the annular groove; the present invention can simultaneously complete the adsorption of waste gas and the elution of adsorbent by dividing the tower body into two independent parts, and at the same time, the honeycomb adsorbent rotates with the first rod as the axis, and the angle of the guide plate is adjustable, so that there is no dead angle in the method of removing impurities in the adsorbent by direct gas blowing, avoiding the existence of impurity dead angles at the inner edge of the adsorbent honeycomb eye, which affects the adsorption efficiency and service life of the adsorbent.