CN112973629B - Pig manure biogas residue adsorbent and method for quickly removing doxycycline in water body - Google Patents
Pig manure biogas residue adsorbent and method for quickly removing doxycycline in water body Download PDFInfo
- Publication number
- CN112973629B CN112973629B CN202110175764.4A CN202110175764A CN112973629B CN 112973629 B CN112973629 B CN 112973629B CN 202110175764 A CN202110175764 A CN 202110175764A CN 112973629 B CN112973629 B CN 112973629B
- Authority
- CN
- China
- Prior art keywords
- pig manure
- biogas residue
- manure biogas
- doxycycline
- water body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Sorption (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a preparation method of a pig manure biogas residue adsorbent, the pig manure biogas residue adsorbent and a method for quickly removing doxycycline in a water body, and belongs to the technical field of environmental management. The preparation method comprises the steps of mixing the pig manure biogas residues with a potassium permanganate aqueous solution, and carrying out ultrasonic treatment to obtain the biomass-KMnO4Drying the mixture to obtain dried biomass-KMnO4Mixing; drying the dried biomass-KMnO4And firing the mixture to obtain the potassium permanganate loaded pig manure biogas residue adsorbent. The method disclosed by the invention is efficient, rapid, economic and environment-friendly, and the aim of efficiently, rapidly, economically and environmentally removing the doxycycline in the water body is fulfilled by loading the biogas residue biochar through the potassium permanganate.
Description
Technical Field
The invention relates to the technical field of environmental management, in particular to a preparation method of a pig manure and biogas residue adsorbent, the pig manure and biogas residue adsorbent and a method for quickly removing doxycycline in a water body.
Background
At present, several methods (such as adsorption, oxidation, electrochemical method, biological treatment) are widely used for removing antibiotics, and the adsorption technology is the preferred choice in consideration of the removal efficiency, simplicity, safety and economic feasibility, but most of the adsorbents are expensive at present. The biochar is low in raw material cost and easy to obtain, good in physical and chemical properties and high in adsorption performance, and can realize efficient physical adsorption, so that the biochar has a good application prospect in the aspects of antibiotic-polluted soil or water body restoration and the like based on the characteristics. However, the application of biochar in water treatment, particularly the removal of doxycycline, has certain limitations, and common biochar has limited ability of adsorbing doxycycline from an aqueous solution, long adsorption time and low adsorption efficiency.
Disclosure of Invention
The invention aims to provide a preparation method of a pig manure biogas residue adsorbent, the pig manure biogas residue adsorbent and a method for quickly removing doxycycline in a water body. The method disclosed by the invention is efficient, rapid, economic and environment-friendly, and the aim of efficiently, rapidly, economically and environmentally removing the doxycycline in the water body is fulfilled by loading the biogas residue biochar through the potassium permanganate.
The invention provides a preparation method of a pig manure biogas residue adsorbent for quickly removing doxycycline in a water body, which comprises the following steps:
mixing pig manure biogas residues and a potassium permanganate aqueous solution, and performing ultrasonic treatment to obtain biomass-KMnO4Drying the mixture to obtain dried biomass-KMnO4Mixing;
drying the dried biomass-KMnO4And firing the mixture to obtain the potassium permanganate loaded pig manure biogas residue adsorbent.
Preferably, the concentration of potassium permanganate in the potassium permanganate aqueous solution is 0.1-0.2 mol/L; the mass-volume ratio of the pig manure biogas residues to the potassium permanganate aqueous solution is 1:5 g/mL.
Preferably, the time of ultrasonic treatment is 2-3 h.
Preferably, the ultrasonic treatment is carried out at a temperature of 25-35 ℃ and a frequency of 80-100 kHz.
Preferably, the drying temperature is 60-80 ℃.
Preferably, the firing temperature is 500-700 ℃, and the time is 2 h.
The invention also provides the pig manure biogas residue adsorbent prepared by the preparation method of the technical scheme.
The invention also provides a method for rapidly removing doxycycline in water based on the pig manure biogas residue adsorbent, which comprises the following steps:
mixing the pig manure biogas residue adsorbent with a water body containing the powerful toxin, and reacting for less than 20 min.
Preferably, the pH value of the water body is 2-11.
Preferably, the reaction temperature is 25-45 ℃.
The invention provides a preparation method of a pig manure biogas residue adsorbent for quickly removing doxycycline in a water body. According to the invention, the pig manure biogas residues are prepared into the potassium permanganate-loaded biogas residue biochar adsorbing material, so that the surface characteristics of biochar are changed, the high-efficiency removal of doxycycline is realized, and the high removal rate of the doxycycline can be realized within 20min, and is more than 80%. The preparation method disclosed by the invention is simple to operate and low in operation cost, the obtained pig manure biogas residue adsorbent is rich in surface functional groups, easy to combine with doxycycline molecules, high in adsorption removal rate, free of secondary pollution to the environment, and in line with the current ecological environment-friendly environmental management concept, and can solve the problems that the doxycycline is difficult to remove, the aquatic ecological environment is polluted and the like; in addition, the raw materials of the pig manure biogas residues used by the preparation method are rich and easily available, the high-value utilization of the biogas residues can be promoted, the preparation cost is low, the preparation process is simple, and the industrial production can be effectively realized.
Drawings
FIG. 1 is a scanning electron microscope image of potassium permanganate modified pig manure biogas residue biochar provided by the invention; wherein, the magnification of a is 3000 times, and the magnification of b is 10000 times;
FIG. 2 shows the effect of the contact time provided by the invention on the adsorption of doxycycline by potassium permanganate modified pig manure biogas residue biochar;
FIG. 3 is a graph showing the results of the adsorption amount provided by the present invention.
Detailed Description
The invention provides a preparation method of a pig manure biogas residue adsorbent (pig manure biogas residue biochar) for quickly removing doxycycline in a water body, which comprises the following steps:
mixing the pig manure biogas residue with a potassium permanganate aqueous solution, and carrying out ultrasonic treatment to obtain biomass-KMnO4Mixing and bakingDrying to obtain dried biomass-KMnO4Mixing;
drying the dried biomass-KMnO4And firing the mixture to obtain the potassium permanganate loaded pig manure biogas residue adsorbent.
The method comprises the steps of mixing pig manure biogas residues with a potassium permanganate aqueous solution, and carrying out ultrasonic treatment to obtain biomass-KMnO4Drying the mixture to obtain dried biomass-KMnO4And (3) mixing. The method utilizes the pig manure and the biogas residues, does not waste resources, does not cause secondary pollution to the environment, fully utilizes the resources, and is energy-saving and environment-friendly. In the invention, before the mixing, the pig manure biogas residues are preferably dried, crushed and sieved. In the invention, the biogas residues can be ground to be finer by crushing and sieving, so that the prepared biochar can react with doxycycline more fully, and the adsorption effect of the biochar on the doxycycline is improved. In the invention, the concentration of potassium permanganate in the potassium permanganate aqueous solution is preferably 0.1-0.2 mol/L, more preferably 0.1mol/L, and the mass-volume ratio of the pig manure biogas residue to the potassium permanganate aqueous solution is preferably 1: 5. The method adopts potassium permanganate for modification, can generate various oxygen-containing functional groups such as C-O, -OH and Mn-O, can save modifier, and realizes the efficient and rapid removal of doxycycline by modifying the pig manure biogas residues by a low-energy-consumption and low-cost method. In the invention, the time of ultrasonic treatment is preferably 2-3 h, and more preferably 2 h. In the invention, the ultrasonic treatment conditions are preferably 25-35 ℃ and 80-100 kHz, and more preferably 25 ℃ and 100 kHz. In the invention, the drying temperature is preferably 60-80 ℃, and more preferably 60 ℃. The invention is preferably dried to constant weight.
The dried biomass-KMnO is prepared by the method4And firing the mixture to obtain the potassium permanganate loaded pig manure biogas residue adsorbent. In the present invention, the firing temperature is preferably 500 to 700 ℃. The firing time is preferably 2-3 h, more preferably 2h, the firing conditions are set to ensure that the yield of the obtained biochar is high, the content of water-soluble substances in the biochar can be increased as much as possible, and the adsorption effect of the biochar (the content of the water-soluble substances in the biochar influences the adsorption capacity of the biochar). After the firing, the invention preferably further comprises the operations of washing, filtering and drying. In the present invention, the washing is preferably performed using deionized water, and the number of times of washing is preferably 3 or more. The filtering condition of the invention is preferably to use a microporous membrane with the pore diameter of 0.45 μm for filtering to remove impurities. The temperature for drying in the present invention is preferably 60 ℃.
The preparation method provided by the invention is a method for preparing the doxycycline adsorbent capable of rapidly and efficiently adsorbing the doxycycline in the water body by using the pig manure biogas residues as raw materials, on one hand, a high-valued utilization mode of the pig manure biogas residues is provided, and on the other hand, the doxycycline in the water body can be rapidly and efficiently adsorbed within 20 min. The preparation process is simple, efficient, economical and environment-friendly, and accords with the current ecological green concept.
The invention also provides the pig manure biogas residue adsorbent prepared by the preparation method of the technical scheme.
The invention also provides a method for rapidly removing doxycycline in water based on the pig manure biogas residue adsorbent, which comprises the following steps:
the pig manure biogas residue adsorbent is mixed with a water body containing the doxycycline, and the removal rate of the doxycycline in the water body can be more than 80 percent within 20min of reaction. In the invention, the pH value of the water body is preferably 2-11. In the invention, the reaction temperature is preferably 25-45 ℃. In the invention, the ratio of the mass of the pig manure biogas residue adsorbent to the volume of the water containing the powerful toxin is preferably (0.1-10) mg:1mL, and more preferably 1mg:1 mL. In the present invention, the reaction time is preferably within 20 min. In the specific embodiment of the invention, when the concentration of the doxycycline in the water body is controlled at 50mg/L, the equilibrium adsorption amount of the doxycycline in the water body is 40.72mg adsorbed by each gram of adsorbent, the equilibrium removal rate is 81.4%, and the time for reaching the reaction equilibrium is 20 min.
The following embodiments are provided to further describe in detail the preparation method of the pig manure biogas residue adsorbent, the pig manure biogas residue adsorbent and the method for rapidly removing doxycycline in water body, and the technical solutions of the present invention include, but are not limited to, the following embodiments.
Example 1
(1) Drying the pig manure biogas residues to constant weight, crushing the dried pig manure biogas residues for 2-3 times by using a small crusher, sieving the crushed pig manure biogas residues with a 60-mesh sieve, adding the crushed pig manure biogas residues into a potassium permanganate aqueous solution with the mass concentration of 0.1mol/L according to the solid-liquid ratio of 1:5, and carrying out ultrasonic treatment for 2h (KH5200DE type numerical control ultrasonic cleaner) at the temperature of 25 ℃ and the frequency of 100kHz to obtain the biomass-KMnO4Drying the mixture at 60 ℃;
(2) drying the biomass-KMnO in the step (1)4And firing the mixture in a tubular furnace at the firing temperature of 500 ℃, washing and filtering the mixture for 3 times by using deionized water, filtering, and drying at the temperature of 60 ℃ until the water content is basically 0 to obtain the potassium permanganate loaded biogas residue biochar material (namely the pig manure biogas residue adsorbent).
The scanning electron microscope image of the potassium permanganate modified pig manure biogas residue biochar is shown in figure 1; wherein, the magnification of a is 3000 times, and the magnification of b is 10000.
And adding 250mg of potassium permanganate modified pig manure biogas residue biochar into 250mL of 50mg/L doxycycline solution, controlling the pH to be 2-11, controlling the temperature to be 25-45 ℃, and controlling the reaction time to be within 1 h.
The adsorption capacity (adsorption capacity) of doxycycline was calculated using the following formula:
in the formula: q (mg/g): the adsorption capacity of the biochar with unit mass to the antibiotics during reaction equilibrium; v (L): the volume of antibiotic solution; c0(mg/L): initial concentration of antibiotic solution; ce(mg/L): reaction equilibrium concentration of antibiotic solution; m (g): quality of the biochar.
The calculation formula of the removal rate is as follows:
the removal rate can embody real adsorption performance, and the removal rate of the biochar prepared by the method reaches 81.4 percent, which is more remarkable.
Finally, the equilibrium adsorption quantity of the doxycycline in the water body is 40.72mg/g, the equilibrium removal rate is 81.4%, and the time for reaching the reaction equilibrium is 20 min. The results of the effect of the contact time on the adsorption of doxycycline by the potassium permanganate modified pig manure biogas residue biochar are shown in fig. 2. Along with the increase of the contact time, the adsorption capacity of the biochar is rapidly increased within 0-15 min of the reaction; within 15-20 min, the increase rate of the adsorption capacity gradually decreases, the increase is slowed, and the adsorption reaches balance; the adsorption capacity hardly continued to increase after 20 min.
The method adopts the pig manure biogas residues as the raw material and the potassium permanganate is modified into the modification method, so as to prepare the potassium permanganate-loaded pig manure biogas residue biochar material. The adsorption result of doxycycline in water solution shows that the equilibrium adsorption capacity is 40.72mg/g, the equilibrium removal rate is 81.4%, and the equilibrium time is about 20 min.
Example 2
A preparation method of pig manure biogas residue adsorbent (pig manure biogas residue biochar) for rapidly removing doxycycline in water body is provided. The steps are the same as the adsorption removal of doxycycline in the water body in the embodiment 1, and the difference is that: the initial concentration of doxycycline in water in example 2 was 100 mg/L.
Adding 250mg of the pig manure biogas residue adsorbent prepared in the example 1 into 250mL of 100mg/L doxycycline solution, placing the solution in a magnetic stirring water bath kettle at 25 ℃, oscillating at constant temperature for 7min, settling the solution after reaction, and filtering by adopting a 0.45-micron microporous membrane. The concentration of doxycycline in the reacted solution was measured with an ultraviolet spectrophotometer, and the calculated adsorption amount results are shown in fig. 3. The results show that as the initial concentration increases, the amount of adsorption also increases. When the initial concentration is 100mg/L, the adsorption capacity of the pig manure biogas residue adsorbent material on the doxycycline reaches 90.15mg/g at most, and the removal rate reaches 90.15%. And the adsorption time is reduced by more than one time compared with the group with the initial concentration of 50mg/L of the solution, and is only 7min, so that the adsorption rate and the adsorption capacity are greatly improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (5)
1. A method for rapidly removing doxycycline in a water body based on a pig manure biogas residue adsorbent is characterized by comprising the following steps:
mixing the pig manure biogas residue adsorbent with a water body containing the powerful toxin, and reacting for less than 20 min;
the preparation method of the pig manure biogas residue adsorbent comprises the following steps:
mixing the pig manure biogas residue with a potassium permanganate aqueous solution, and carrying out ultrasonic treatment to obtain biomass-KMnO4Drying the mixture to obtain dried biomass-KMnO4Mixing;
drying the dried biomass-KMnO4Firing the mixture to obtain a pig manure biogas residue adsorbent;
the ultrasonic treatment time is 2-3 h; the firing temperature is 500-700 ℃, and the time is 2 h;
the concentration of potassium permanganate in the potassium permanganate aqueous solution is 0.1-0.2 mol/L; the mass-volume ratio of the pig manure biogas residues to the potassium permanganate aqueous solution is 1:5 g/mL.
2. The method according to claim 1, wherein the ultrasonic treatment is carried out at a temperature of 25 to 35 ℃ and a frequency of 80 to 100 kHz.
3. The method according to claim 1, wherein the temperature of the drying is 60 to 80 ℃.
4. The method according to claim 1, wherein the pH value of the water body is 2 to 11.
5. The method according to claim 1, wherein the temperature of the reaction is 25 to 45 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110175764.4A CN112973629B (en) | 2021-02-06 | 2021-02-06 | Pig manure biogas residue adsorbent and method for quickly removing doxycycline in water body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110175764.4A CN112973629B (en) | 2021-02-06 | 2021-02-06 | Pig manure biogas residue adsorbent and method for quickly removing doxycycline in water body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112973629A CN112973629A (en) | 2021-06-18 |
| CN112973629B true CN112973629B (en) | 2022-05-17 |
Family
ID=76392421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110175764.4A Active CN112973629B (en) | 2021-02-06 | 2021-02-06 | Pig manure biogas residue adsorbent and method for quickly removing doxycycline in water body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112973629B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148842A (en) * | 2015-09-07 | 2015-12-16 | 河北师范大学 | Preparing method of manganese oxide-charcoal composite adsorbent |
| CN107469768A (en) * | 2017-08-25 | 2017-12-15 | 华南农业大学 | A kind of animal dung biogas residue charcoal/manganese oxide composite material and preparation method thereof |
| CN109110863A (en) * | 2018-09-20 | 2019-01-01 | 湖南大学 | Utilize the method for fortimicin in chemical activation/micro-wave digestion activation biological carbon materials removal water body |
| CN109179554A (en) * | 2018-10-10 | 2019-01-11 | 湖南大学 | Utilize the method for fortimicin in manganese dioxide load biological carbon materials removal water body |
| CN109847696A (en) * | 2019-01-22 | 2019-06-07 | 太原理工大学 | A kind of efficient preparation method for carrying the useless bacteria residue activated carbon from activated sludge of manganese for removing aniline in water body |
| CN111921493A (en) * | 2020-06-30 | 2020-11-13 | 长江大学 | Xanthoceras sorbifolia-based hydrothermal carbon adsorbent and preparation method thereof |
-
2021
- 2021-02-06 CN CN202110175764.4A patent/CN112973629B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148842A (en) * | 2015-09-07 | 2015-12-16 | 河北师范大学 | Preparing method of manganese oxide-charcoal composite adsorbent |
| CN107469768A (en) * | 2017-08-25 | 2017-12-15 | 华南农业大学 | A kind of animal dung biogas residue charcoal/manganese oxide composite material and preparation method thereof |
| CN109110863A (en) * | 2018-09-20 | 2019-01-01 | 湖南大学 | Utilize the method for fortimicin in chemical activation/micro-wave digestion activation biological carbon materials removal water body |
| CN109179554A (en) * | 2018-10-10 | 2019-01-11 | 湖南大学 | Utilize the method for fortimicin in manganese dioxide load biological carbon materials removal water body |
| CN109847696A (en) * | 2019-01-22 | 2019-06-07 | 太原理工大学 | A kind of efficient preparation method for carrying the useless bacteria residue activated carbon from activated sludge of manganese for removing aniline in water body |
| CN111921493A (en) * | 2020-06-30 | 2020-11-13 | 长江大学 | Xanthoceras sorbifolia-based hydrothermal carbon adsorbent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112973629A (en) | 2021-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111872027B (en) | Method for co-processing waste incineration fly ash and printing and dyeing waste liquid | |
| CN106277283B (en) | Strengthen the method for removing arsenic antimony ion in water removal using iron and manganese oxides biological in filter tank | |
| CN109179554A (en) | Utilize the method for fortimicin in manganese dioxide load biological carbon materials removal water body | |
| CN109046229B (en) | Lanthanum hydroxide modified hydroxyapatite material and preparation method and application thereof | |
| CN112316913A (en) | Water treatment adsorbent using red mud waste residues as raw materials and preparation method thereof | |
| CN102107980A (en) | Method for removing sulfonic-group-containing dye in alkaline waste water by using magnetic chitosan adsorbent | |
| CN112441659A (en) | Method for degrading and treating organic pollutants by activating persulfate through multi-stage mesoporous biochar material | |
| CN109110863A (en) | Utilize the method for fortimicin in chemical activation/micro-wave digestion activation biological carbon materials removal water body | |
| CN114288990B (en) | Preparation method of hydroxylated magnetic graphene oxide adsorbent | |
| CN115155592A (en) | Preparation method and application of iron cobaltate/coal gangue catalyst for efficiently activating persulfate | |
| CN110614078A (en) | Preparation of potassium permanganate modified heavy metal cadmium adsorbent | |
| CN112973629B (en) | Pig manure biogas residue adsorbent and method for quickly removing doxycycline in water body | |
| CN110862137A (en) | Preparation of sulfuration modified nano zero-valent iron and application of sulfuration modified nano zero-valent iron in treatment of antibiotic resistance gene | |
| JPWO2004058423A1 (en) | Method for removing heavy metals from incineration ash | |
| CN115382551B (en) | Three-dimensional carbonaceous functional cathode material based on potassium ferrate modification, and preparation method and application thereof | |
| CN107686156A (en) | A kind of Fenton methods of efficient degradation organic pollutants | |
| CN111715195A (en) | Copper slag polyaniline magnetic composite adsorbent and preparation method thereof | |
| CN114367267B (en) | Mesoporous composite material and preparation method and application thereof | |
| CN110575812A (en) | environment-friendly adsorbing material for efficient phosphorus removal of argil/pyrolusite and preparation method thereof | |
| CN114226441B (en) | Method for solidifying heavy metal polluted soil and preventing secondary pollution by polyvinyl alcohol | |
| CN115722227A (en) | Iron slag-doped wine-making sludge biochar material and preparation method and application thereof | |
| CN108554408A (en) | A kind of catalyst and the preparation method and application thereof for phenol in degradation water | |
| CN108452776A (en) | A kind of adsorbent for sewage disposal | |
| CN113426412A (en) | Preparation method and application of recyclable and renewable magnetic petiole biochar capable of adsorbing Cr (VI) | |
| CN110698038A (en) | Method for sludge dehydration and removal of bacterial 16S rRNA gene and antibiotic resistance gene |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |