Abstract

Disclosed are a method for mining rare earth ore by electrification and a leaching agent for mining rare earth ore by electrification. The method includes: arranging liquid injection holes in a mining area, arranging electrically conductive liquid injection pipes in the liquid injection holes, and connecting N electrically conductive liquid injection pipes in a same row in parallel to an electrification control system; and adding a leaching agent into the liquid injection holes, and applying a direct current between electrodes by the electrification control system, the leaching agent including small molecular betaine. According to the present disclosure, the betaine can reduce the wetting resistance between solid and liquid phases, and promote the wetting and infiltration effects of a leaching agent solution on soil.

IPC Classes  ?

• C22B 3/04 - Extraction of metal compounds from ores or concentrates by wet processes by leaching
• C25C 1/22 - Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups

Abstract

The present application discloses the use of diatom in rice planting and a cultivation method of rice in symbiosis with diatom and relates to the technical field of rice planting. The use of diatom in rice planting is achieved by adding diatom to an irrigated paddy field and performing co-cultivation during rice planting. Co-cultivation of diatom and rice can effectively achieve the beneficial effects of increased yield/silicon, thicker straw, and increased lodging resistance in rice, and can reduce soil degradation, reduce the risk of heavy metal pollution and increase soil fertility.

IPC Classes  ?

• C12N 1/12 - Unicellular algaeCulture media therefor
• A01G 22/22 - Rice

Abstract

A method for extracting rare earth elements (REEs) from a REE hyperaccumulator, including: subjecting the REE hyperaccumulator to microwave-assisted digestion to obtain a REE extract; subjecting the REE extract to absorption with a chelating resin and elution to obtain a purified REE solution; and subjecting the purified REE solution to precipitation and calcination to obtain high-purity rare earth compound.

IPC Classes  ?

• C22B 59/00 - Obtaining rare earth metals
• C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
• C22B 3/10 - Hydrochloric acid
• C22B 3/14 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
• C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
• C22B 3/46 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
• C22B 3/26 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds

Abstract

Disclosed are a fungus LJD-6 capable of efficiently degrading benzo[a]pyrene and an application thereof. Aspergillus elsenburgensis LJD-6 was preserved in Guangdong Microbial Culture Collection Center (GDMCC) on August 31, 2021, with the address of 5th Floor, Building 59, Yard 100, Xianlie Middle Road, Guangzhou City, Guangdong Province, the postal code of 510070, and the preservation number of GDMCC No: 61887. A benzo[a]pyrene degradation bacterium LJD-6 that can grow with the benzo[a]pyrene as a carbon source is obtained by enriching and separating from Hangzhou petroleum-contaminated soil. The strain LJD-6 is an obligate aerobic bacterium, and can form a colony of 3-7 mm, which is brownish green and quasi-circular, has an irregular edge, and has gray fluffy hyphae growing upwards; and the back surface of the strain LJD-6 is yellow. LJD-6 is a strain capable of efficiently degrading the benzo[a]pyrene, has strong adaptability to polycyclic aromatic hydrocarbons, and also has good application potential in the aspect of bioremediation of benzo[a]pyrene.

IPC Classes  ?

• C12N 1/14 - Fungi Culture media therefor
• B09C 1/10 - Reclamation of contaminated soil microbiologically or by using enzymes
• C12R 1/66 - Aspergillus

Abstract

The use of a diatom in rice planting. During rice planting, a diatom is added to an irrigated rice field for co-cultivation, so that the rice yield/silicon yield can be effectively increased, the straw is thicker and stronger, the lodging resistance is improved, the soil degradation is weakened, the risk of heavy metal contamination is reduced, and the soil fertility is improved. The present invention also relates to the use of a diatom in the preparation of an additive for increasing the yield and thickening or lodging resistance of rice, a method for co-cultivating rice and a diatom, and the use of the method in rice planting.

IPC Classes  ?

• A01G 22/22 - Rice
• C12N 1/12 - Unicellular algaeCulture media therefor

Abstract

A hydrocarbon generation pyrolysis simulation experimental device for centrifugal continuous gas sampling of a hydrocarbon source rock, including a centrifugal turntable, a motor, a quartz sample tube, a heating set, a cooling set, a rotary joint mounted coaxially with a rotating shaft of the centrifugal turntable, a vacuum pump, and vacuum gas collecting pipes, wherein a sealing plug is arranged at an orifice of the quartz sample tube, a thermocouple and a first exhaust pipeline connected with an inlet of the rotary joint are mounted on the sealing plug, the rotary joint is communicated with a vacuum pump through a second exhaust pipeline, a plurality of vacuum gas collecting pipes are respectively communicated with the second exhaust pipeline through an electromagnetic valve, a vacuum pump switching valve is mounted on the second exhaust pipeline at an inlet end of the vacuum pump, and a control circuit board is mounted on the centrifugal turntable.

IPC Classes  ?

• G01N 1/22 - Devices for withdrawing samples in the gaseous state
• G01N 1/24 - Suction devices
• G01N 25/00 - Investigating or analysing materials by the use of thermal means
• G01N 30/14 - Preparation by elimination of some components
• G01N 30/12 - Preparation by evaporation

Abstract

Provided is a centrifugal continuous gas sampling thermal simulation experiment device for source rock hydrocarbon generation, which comprises a centrifugal turntable (1), a motor (2), a quartz sample tube (3), a heating kit (4), a cooling kit (5), a rotary joint (6) installed coaxially with the rotating shaft of the centrifugal turntable (1), a vacuum pump (7) and vacuum gas collection tubes (10, 20, 30, 40, 50), the nozzle of the quartz sample tube (3) is provided with a sealing plug (9), the sealing plug (9) is provided with a thermocouple (10) and a first exhaust pipeline (11) connected with the inlet of the rotary joint (6), the rotary joint (6) is communicated with the vacuum pump (7) through a second exhaust pipeline (12), a plurality of vacuum gas collection tubes (10, 20, 30, 40, 50) are respectively communicated with the second exhaust pipeline (12) through electromagnetic valves (101, 102, 103, 104, 105), a vacuum pump (7) switch valve (15) is installed at the inlet end of the vacuum pump (7) in the second exhaust pipeline (12), and a control circuit board (13) is further installed on the centrifugal turntable (1). The oil produced by the thermal simulation can be transported to a low-temperature area at the lower part of the quartz sample tube (3), so as to avoid secondary cracking of the oil; and the gas generated at different temperatures can be collected by segments for analysis, the experimental efficiency is high, and the analysis error is low.

IPC Classes  ?

• G01N 5/04 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
• G01N 25/00 - Investigating or analysing materials by the use of thermal means
• G01N 30/02 - Column chromatography
• G01N 30/06 - Preparation
• G01N 30/14 - Preparation by elimination of some components

Abstract

The present invention relates to a composition analysis technology of ultramicro-volume liquid by laser ablation plasma mass spectrometry. Using a pipette gun to extract the liquid to be detected in a low-temperature environment, dropping the liquid into a dropping pit in a dropping plate, the liquid level is slightly higher than an overflow table in the dropping plate; dropping different liquid samples into different dropping pits by the same method; gradually covering the dropping pit with an analysis film having an area 1.5 times larger than that of the dropping plate from one side of the dropping plate, tightly adhering the thin film onto the dropping plate by using a transparent adhesive tape, the thin film is in close contact with the liquid level; placing the dropping plate covered by the thin film in a LA-ICPMS universal solid sample chamber, and then setting parameters for ablation.

IPC Classes  ?

• H01J 49/00 - Particle spectrometers or separator tubes
• G01N 1/38 - Diluting, dispersing or mixing samples
• G01N 27/626 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
• H01J 49/10 - Ion sourcesIon guns
• G01N 1/28 - Preparing specimens for investigation

Abstract

Disclosed is a method for detection of air-water exchange flux of organic contaminants, which passively and continuously collects contaminants at consecutive points close to a sea surface microlayer, acquires the freely dissolved concentration at the consecutive points of the air and water body close to a water body surface microlayer, and obtains the air-water exchange flux of the contaminants through fitting a self-developed model, wherein the consecutive points include a plurality of sampling points along a height direction above an air-water interface and a plurality of sampling points along a depth direction below the air-water interface. The present invention can be applied to determine the air-water body exchange flux of organic contaminants.

IPC Classes  ?

• G01N 1/10 - Devices for withdrawing samples in the liquid or fluent state
• G01N 33/18 - Water
• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
• G01N 13/00 - Investigating surface or boundary effects, e.g. wetting powerInvestigating diffusion effectsAnalysing materials by determining surface, boundary, or diffusion effects
• G01N 1/16 - Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels

Abstract

An air-water interface flux detection method. Pollutants of successive points at an offshore water micro surface layer are passively and persistently collected, freely dissolved concentrations of the successive points of air and water at the offshore water micro surface layer are acquired, an air-water interface flux of the pollutants is obtained by fitting, and the successive points comprise a plurality of sampling points along a height direction in the air and a plurality of sampling points along a depth direction in the water. The method fully considers influence of a water micro surface layer on air-water exchange, collects pollutants of successive points at an offshore water micro surface layer by means of a passive sampling method, acquires freely dissolved concentrations of the successive points of air and water at the offshore water micro surface layer, and obtains an air-water interface flux of the relevant pollutants. The method can be applied to air-water interface flux detection.

IPC Classes  ?

• G01N 1/10 - Devices for withdrawing samples in the liquid or fluent state
• G01N 13/00 - Investigating surface or boundary effects, e.g. wetting powerInvestigating diffusion effectsAnalysing materials by determining surface, boundary, or diffusion effects

Abstract

A gradually-rising spiral passive sampler for organic pollutants on a water-sediment interface comprises a sediment pore water sampler (2) and a water sampler (1) arranged above the sediment pore water sampler (2). A plurality of sediment sampling units (4) are vertically arranged inside the sediment pore water sampler (2); a plurality of transversely-arranged water sampling units (3) are sequentially arranged inside the water sampler (1) in a vertical direction; the sediment pore water sampler (2) and the water sampler (1) are organically combined together, and the sediment sampling units (4) are arranged vertically and the transversely-arranged water sampling units (1) are sequentially arranged in the vertical direction, so that the concentration of the organic pollutants in sediment pore water in different depths and the concentration of the organic pollutants in overlying water at different heights at the same position can be accurately obtained at the same time, that is, the concentrations at different positions in the sediment pore water and the overlying water can be measured from multiple points at the same time; and through mathematical calculation, the real diffusion flux between the sediment pore water and the overlying water can be obtained.

IPC Classes  ?

• G01N 1/10 - Devices for withdrawing samples in the liquid or fluent state

Abstract

Disclosed is an application of dealumination Y type zeolite in degrading organic pollutants in water under microwave induction. The dealumination Y type zeolite, with the cation being H+ and a mol ratio of SiO2 to Al2O3 being 60, is applied to degrading the organic pollutants in the water under microwave induction. The degrading rate of atrazine is up to 67.40nmol/min under the radiation of 700W microwave (2.450GHz) at the laboratory simulation condition.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/30 - Treatment of water, waste water, or sewage by irradiation

Abstract

A method for removing organic pollutants based on microporous mineral adsorption and coupling and microwave degradation mainly comprises the steps of: filling a hydrophobic porous mineral adsorbent in adsorption columns (7, 9) to adsorb organic pollutants in organic wastewater; and starting a microwave generator (10) to cause the organic pollutants adsorbed in the adsorption columns (7, 9) to degrade under microwave induction after the adsorbent is saturated. Continuous treatment on the organic wastewater is realized via alternate operation and regeneration of the two adsorption columns (7, 9). The method can be used for pollution control of underground water, surface water and drinking water.

IPC Classes  ?

• C02F 1/28 - Treatment of water, waste water, or sewage by sorption
• C02F 1/48 - Treatment of water, waste water, or sewage with magnetic or electric fields

Abstract

A multi-segment sediment pore water sampler is provided at the same axis with several sampling units (1) arranged in a straight line, and each sampling unit (1) is spaced out from each other so that the water body can not be exchanged among each sampling unit (1). The sampler can be used at the same position to collect samples at different depth, which is convenient for sampling the organic pollutant in the sediment pore water body at different depth according to different time resolution. The height of each sampling unit (1) of the sampler is variable and several sampling units (1) have heights different from each other, which is convenient for collector to arrange the heights of the sampling units (1) according to the time resolution required by the actual circumstance of collection spot. The utilization of the sampler is of advantage to improve the time resolution of pollutant water body sampling and the multi-segment sediment pore water sampler can be used in the field of pollutant water body sampling.

IPC Classes  ?

• G01N 1/16 - Devices for withdrawing samples in the liquid or fluent state with provision for intake at several levels
• G01N 1/18 - Devices for withdrawing samples in the liquid or fluent state with provision for splitting samples into portions

Abstract

An Ochrobactrum sp. strain with the capability of degrading tetrabromobisphenol A and its uses in environmental restoration. An Ochrobactrum sp. strain with strong capability of degrading tetrabromobisphenol A isolated from sludge of electronic wastes with high risk is obtained. The Ochrobactrum sp. strain is named as Ochrobactrum sp. strain T, and is deposited as CCTCC M209246 in the China Centre for Type Culture Collection on October 28, 2009. The Ochrobactrum sp. strain T has strong degradation capability to the tetrabromobisphenol A in environment with a degradation rate of 96.2%. It can be used to degrade the tetrabromobisphenol A in environment so as to reach the target of environmental restoration.

IPC Classes  ?

• C12N 1/20 - BacteriaCulture media therefor
• C02F 3/34 - Biological treatment of water, waste water, or sewage characterised by the microorganisms used
• C02F 3/02 - Aerobic processes
• B09C 1/10 - Reclamation of contaminated soil microbiologically or by using enzymes
• A62D 3/02 - Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances by biological methods, i.e. processes using enzymes or microorganisms
• C12R 1/20 - Flavobacterium
• C02F 101/36 - Organic compounds containing halogen
• A62D 101/28 - Organic substances containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen