CN114609338A - Method for detecting activity of red mud - Google Patents
Method for detecting activity of red mud Download PDFInfo
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- CN114609338A CN114609338A CN202210243950.1A CN202210243950A CN114609338A CN 114609338 A CN114609338 A CN 114609338A CN 202210243950 A CN202210243950 A CN 202210243950A CN 114609338 A CN114609338 A CN 114609338A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000000694 effects Effects 0.000 title claims abstract description 27
- 239000002002 slurry Substances 0.000 claims abstract description 72
- 238000000498 ball milling Methods 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000007873 sieving Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000003513 alkali Substances 0.000 claims abstract description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 3
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 238000009776 industrial production Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 25
- 239000002994 raw material Substances 0.000 description 12
- 239000002253 acid Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000013494 PH determination Methods 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a method for detecting the activity of red mud, which comprises the steps of drying the red mud in a muffle furnace; ball-milling and sieving the dried red mud to prepare red mud powder; mixing the obtained powder with water, putting the mixture into a container, adding a dispersing agent, and stirring at constant temperature to obtain red mud slurry; measuring the initial pH value of the red mud slurry by using a pH meter to be C1; CO control by gas flow meter2Gas flow, introducing CO into the red mud slurry2Carrying out dealkalization reaction on the gas to obtain dealkalized red mud slurry; measuring the pH value of the dealkalized red mud slurry to be C2 by using a pH meter; judging the activity of the red mud by reacting the content of free alkali in the red mud through the change of the pH value; the method for judging the activity of the red mud by comparing the change of the pH value of the red mud slurry before and after dealkalization at least comprises the steps of simple operation and finished productLow cost, and is suitable for industrial production.
Description
Technical Field
The invention particularly relates to a method for detecting red mud activity.
Background
The red mud is strong alkaline waste generated in the production process of alumina, and the strong alkalinity is an important factor for restricting large-scale comprehensive utilization of the red mud. According to statistics, the global red mud storage amount reaches 39 hundred million t by 2017, China is the largest producing country of alumina in the world, 2021 Chinese bauxite&The research on the alumina market indicates that the red mud production in China exceeds 1 hundred million t in 2020, and the accumulated stock reaches 16 hundred million t. In addition, global red mud is also increasing at 1.2 million t/year production. With the increase of the yield of alumina and the gradual reduction of bauxite grade, the growth trend of red mud is increased year by year, but the comprehensive utilization rate is very low and is less than 10 percent in the global scope. Therefore, the red mud needs to be dealkalized, so as to realize the comprehensive utilization of the red mud and ensure the sustainable development of the aluminum industry. At present, the more mature red mud dealkalization methods include a water washing method, an acid leaching method, a lime method, a salt leaching method and a CO2A method, an industrial three-waste neutralization method, a biological method and the like. Wherein CO is2The method has received wide attention because of low production cost and high dealkalization rate. CO 22The dealkalization method is to add CO into the red mud slurry2Or containing CO2With CO2The dealkalization is carried out by a weak acid solution formed after dissolving in water. The dealkalization rate of the red mud in the prior experimental process is measured by measuring alkaline substances (Na is used) in the solid-phase red mud before and after the reaction2Calculated as O%) and is obtained by calculation. However, the operation steps required by the method are complicated, and Na can be introduced into the red mud during the dealkalization process due to the addition of some dispersant+Further causing experimental errors.
At present, no general method exists for evaluating the activity of the red mud, and various problems exist in the reasonable regulation and control of the dealkalization process, so that the effective utilization and conversion of the red mud are influenced.
Disclosure of Invention
The invention aims to provide a method for effectively, quickly and accurately detecting the activity of red mud, which is simple to operate, low in cost and suitable for industrial production.
In order to achieve the purpose, the technical scheme is as follows:
the method for detecting the activity of the red mud comprises the following steps:
(1) drying the red mud in a muffle furnace;
(2) ball-milling and sieving the dried red mud to prepare red mud powder;
(3) mixing the obtained water and the powder, putting the mixture into a container, adding a dispersing agent, and stirring at constant temperature to obtain red mud slurry; measuring the initial pH value of the red mud slurry by using a pH meter to be C1;
(4) CO control by gas flow meter2Gas flow, introducing CO into the red mud slurry2Carrying out dealkalization reaction on the gas to obtain dealkalized red mud slurry; measuring the pH value of the dealkalized red mud slurry to be C2 by using a pH meter;
(5) the change rate of the pH value of the red mud slurry before and after dealkalization reflects the change of the content of free alkali in the red mud slurry, and the activity of the red mud is calculated and judged by a formula:
wherein, C1 is the initial pH of the red mud slurry; c2 ═ pH of dealkalized red mud slurry; and t is the dealkalization time of the red mud.
According to the scheme, the drying temperature in the step 1 is 100-200 ℃, and the drying time is 24-30 h.
According to the scheme, the ball milling speed in the step 2 is 500-600r/min, and the ball milling time is 24-36 h.
According to the scheme, the mesh number of the sieve in the step 2 is 100 meshes, 250 meshes, 500 meshes and 1000 meshes.
According to the scheme, the liquid-solid mass ratio of the water to the powder in the step 3 is (3-10): 1. specifically 3:1, 5:1, 10:1, preferably 5: 1.
According to the scheme, the dispersing agent in the step 3 is one or any combination of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and fatty alcohol-polyoxyethylene ether sodium sulfate; the total mass of the red mud slurry is 0-1 wt%.
According to the scheme, the stirring temperature in the step 3 is 70-100 ℃; the stirring speed is 150-300r/min, and the stirring time is 3-10 h.
According to the scheme, CO is introduced in the step 42The gas flow is 0.5-2L/min; CO 22Concentration of gas>90％。
According to the scheme, the dealkalization reaction time in the step 4 is 1-3 h. Preferably for 2 hours.
Compared with the prior art, the invention has the following beneficial effects:
CO2is an acid gas which forms H after mixing with water2CO3So CO in the atmosphere or industrial exhaust gases2Is another potentially important acid source for neutralizing red mud. CO 22The dealkalization by the method belongs to gas, liquid and solid three-phase reaction, and when CO is used2The red mud is introduced into a red mud system, firstly dissolved in the solution, reacts with alkaline substances such as Na salt and the like attached to the red mud to change the alkaline substances into soluble ions, and gradually separates from the red mud to enter the solution. Therefore, the pH value of the red mud slurry can be changed in detail before and after dealkalization of the red mud, and the activity of the red mud slurry is judged by observing the change rate of the pH value of the red mud slurry in a fixed time.
The method judges the red mud activity by comparing the change of the pH value before and after dealkalization of the red mud slurry, and at least has the advantages of simple operation, low cost, suitability for industrial production and the like.
Detailed Description
The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation. The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
The method for detecting the red mud activity described in the specific embodiment comprises the following steps:
(1) drying the red mud in a muffle furnace; the drying temperature is 100 ℃ and 200 ℃, and the drying time is 24-30 h.
(2) Ball-milling and sieving the dried red mud to prepare red mud powder; the ball milling speed is 500-; the mesh number of the sieve is 100 meshes, 250 meshes, 500 meshes and 1000 meshes.
(3) Mixing the obtained water and the powder, putting the mixture into a container, adding a dispersing agent, and stirring at constant temperature to obtain red mud slurry; measuring the initial pH value of the red mud slurry to be C1 by using a pH meter;
wherein the liquid-solid mass ratio of the water to the powder is (3-10): 1. specifically 3:1, 5:1, 10:1, preferably 5: 1.
The adopted dispersing agent is one or any combination of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and fatty alcohol-polyoxyethylene ether sodium sulfate; the total mass of the red mud slurry is 0-1 wt%.
The stirring temperature is 70-100 ℃; the stirring speed is 150-300r/min, and the stirring time is 3-10 h.
(4) CO control by gas flow meter2Gas flow, introducing CO into the red mud slurry2Carrying out dealkalization reaction on the gas to obtain dealkalized red mud slurry; measuring the pH value of the dealkalized red mud slurry by using a pH meter to be C2; introducing CO2The gas flow is 0.5-2L/min; CO 22Concentration of gas>90 percent; the dealkalization reaction time is 1-3 h. Preferably for 2 hours.
(5) The change rate of the pH value of the red mud slurry before and after dealkalization reflects the change of the content of free alkali in the red mud slurry, and the activity of the red mud is calculated and judged by a formula 1:
wherein, C1 is the initial pH of the red mud slurry; C2-pH of dealkalized red mud slurry; and t is dealkalization time of the red mud.
Example 1
(1) Drying the red mud: weighing the red mud raw material, placing the red mud raw material in a muffle furnace, and drying for 24 hours at 110 ℃ to obtain the dried red mud.
(2) Ball milling and sieving: crushing and ball-milling the dried red mud raw material by adopting an XGB2 planetary ball mill, wherein the ball-milling speed is 500r/min, the ball-milling time is 12h, and the ball: the raw materials are 2:1, and the red mud after ball milling is sieved by a 250-mesh sieve to prepare powder for later use.
(3) Preparing slurry: mixing the obtained purified water and red mud powder according to the mass ratio of 3:1 into a stirring container, adding 0.5 wt% of dispersant (sodium dodecyl sulfate) and stirring with a 78HW-1 constant temperature magnetic stirrer at 60 deg.C and 150r/min for 5h to obtain red mud slurry.
(4) Initial slurry pH determination: the pH of the slurry was measured to be C1 using a PHS-3C type acidimeter.
(5) Dealkalization: introducing CO with the concentration of 95 percent into the prepared red mud slurry by using a gas flowmeter2Gas with the gas flow rate of 0.5L/min is subjected to dealkalization reaction for 2 hours at the temperature of 70 ℃ to obtain dealkalized slurry.
(6) And (3) pH value determination of the dealkalized slurry: the pH of the dealkalized mud was measured to be C2 using a PHS-3C type acidimeter.
The initial mud pH C1 was tested to be 10.57 over 2h of CO2After the dealkalization of the gas, the dealkalized slurry pH C2 was 8.75, and the rate of change in pH was calculated to be 0.91. CO can be judged according to the change value of the pH value obtained by the test2The method can obviously reduce the alkalinity of the red mud slurry, and the pH change rate before and after dealkalization reflects the activity of the red mud slurry.
Example 2
(1) Drying the red mud: weighing the red mud raw material, placing the red mud raw material in a muffle furnace, and drying for 24 hours at 110 ℃ to obtain the dried red mud.
(2) Ball milling and sieving: crushing and ball-milling the dried red mud raw material by adopting an XGB2 planetary ball mill, wherein the ball-milling speed is 500r/min, the ball-milling time is 12h, and the ball: the raw materials are 2:1, and the red mud after ball milling is sieved by a 400-mesh sieve to prepare powder for later use.
(3) Preparing slurry: mixing the obtained purified water and red mud powder according to the mass ratio of 5: the liquid-solid ratio of 1 is put into a stirring container, 0.5 wt% of dispersant (sodium dodecyl sulfate) is added, and the mixture is stirred by a 78HW-1 type constant temperature magnetic stirrer to prepare the red mud slurry, the stirring temperature is 60 ℃, the stirring speed is 150r/min, and the stirring time is 5 hours.
(4) Initial slurry pH determination: the pH of the slurry was measured to be C1 using a PHS-3C type acidimeter.
(5) Dealkalization: introducing CO with the concentration of 95 percent into the prepared red mud slurry by using a gas flowmeter2Gas with the gas flow rate of 0.8L/min, and carrying out dealkalization reaction at 70 ℃ for 2h to obtain dealkalized slurry.
(6) And (3) pH value determination of the dealkalized slurry: the pH of the dealkalized slurry was measured to be C2 using a PHS-3C type acidimeter.
The initial mud pH C1 was tested to be 10.64 over 2h of CO2After the dealkalization of the gas, the dealkalized mud pH C2 was 8.48, and the rate of change in pH was calculated to be 1.08. CO can be judged according to the change value of the pH value obtained by the test2The method can obviously reduce the alkalinity of the red mud slurry, and the pH change rate before and after dealkalization reflects the activity of the red mud slurry.
Example 3
(1) Drying the red mud: weighing the red mud raw material, placing the red mud raw material in a muffle furnace, and drying for 24 hours at 110 ℃ to obtain the dried red mud.
(2) Ball milling and sieving: crushing and ball-milling the dried red mud raw material by adopting an XGB2 planetary ball mill, wherein the ball-milling speed is 500r/min, the ball-milling time is 12h, and the ball: the raw materials are 2:1, and the red mud after ball milling is sieved by a 400-mesh sieve to prepare powder for later use.
(3) Preparing slurry: mixing the obtained purified water and red mud powder according to the mass ratio of 10: the liquid-solid ratio of 1 is put into a stirring container, 0.5 wt% of dispersant (sodium dodecyl sulfate) is added, and the mixture is stirred by a 78HW-1 type constant temperature magnetic stirrer to prepare the red mud slurry, the stirring temperature is 60 ℃, the stirring speed is 200r/min, and the stirring time is 5 hours.
(4) Initial slurry pH determination: the pH of the slurry was measured to be C1 using a PHS-3C type acidimeter.
(5) Dealkalization: introducing CO with the concentration of 95 percent into the prepared red mud slurry by utilizing a gas flowmeter2Gas with the gas flow rate of 0.8L/min is subjected to dealkalization reaction for 2 hours at the temperature of 70 ℃ to obtain dealkalized slurry.
(6) And (3) pH value determination of the dealkalized slurry: the pH of the dealkalized slurry was measured to be C2 using a PHS-3C type acidimeter.
The initial mud pH C1 was 10.49 over 2h of CO2After the dealkalization of the gas, the dealkalized mud pH C2 was 8.18, and the rate of change in pH was calculated to be 1.155. CO can be judged according to the change value of the pH value obtained by the test2The method can obviously reduce the alkalinity of the red mud slurry, and the pH change rate before and after dealkalization reflects the activity of the red mud slurry.
Claims (9)
1. The method for detecting the activity of the red mud is characterized by comprising the following steps of:
(1) drying the red mud in a muffle furnace;
(2) ball-milling and sieving the dried red mud to prepare red mud powder;
(3) mixing the obtained powder with water, putting the mixture into a container, adding a dispersing agent, and stirring at constant temperature to obtain red mud slurry; measuring the initial pH value of the red mud slurry to be C1 by using a pH meter;
(4) CO control by gas flow meter2Gas flow rate, introducing CO into the red mud slurry2Carrying out dealkalization reaction on the gas to obtain dealkalized red mud slurry; measuring the pH value of the dealkalized red mud slurry to be C2 by using a pH meter;
(5) the change rate of the pH value of the red mud slurry before and after dealkalization reflects the change of the content of free alkali in the red mud slurry, and the activity of the red mud is calculated and judged by a formula:
wherein, C1 is the initial pH of the red mud slurry; C2-pH of dealkalized red mud slurry; and t is the dealkalization time of the red mud.
2. The method for detecting the red mud activity of claim 1, wherein the drying temperature in step 1 is 100-200 ℃, and the drying time is 24-30 h.
3. The method for detecting red mud activity of claim 1, wherein the ball milling speed in step 2 is 500-.
4. The method for detecting red mud activity according to claim 1, wherein the mesh size of the screen in step 2 is 100 mesh, 250 mesh, 500 mesh, or 1000 mesh.
5. The method for detecting the red mud activity of claim 1, wherein the liquid-solid mass ratio of the water to the powder in the step 3 is (3-10): 1.
6. the method for detecting the activity of the red mud of claim 1, wherein the dispersing agent in the step 3 is one or any combination of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium fatty alcohol-polyoxyethylene ether sulfate; the dosage of the red mud slurry accounts for 0-1 wt% of the total mass of the obtained red mud slurry.
7. The method for detecting the red mud activity of claim 1, wherein the stirring temperature in the step 3 is 70-100 ℃; the stirring speed is 150-300r/min, and the stirring time is 3-10 h.
8. The method for detecting the activity of red mud according to claim 1, wherein CO is introduced in the step 42The gas flow is 0.5-2L/min; CO 22Concentration of gas>90％。
9. The method for detecting the red mud activity of claim 1, wherein the dealkalization reaction time in the step 4 is 1-3 h.
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| CN115007151A (en) * | 2022-07-14 | 2022-09-06 | 山东省科学院能源研究所 | Method for preparing catalyst by dealkalizing Fenton iron mud |
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| PATEL H 等: "Single and multichamber fixed film anaerobic reactors for biomethanation of acidic petrochemical wastewater-systems performance", PROCESS BIOCHEMISTRY, vol. 36, no. 7 * |
| 丁绍兰;张敏娜;王明;周艳;: "铝厂赤泥脱碱技术研究", 陕西科技大学学报, no. 03 * |
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| 官宝红,徐根良,谭天恩: "碱性印染废水的pH对活性污泥的影响及其控制", 高校化学工程学报, no. 03 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115007151A (en) * | 2022-07-14 | 2022-09-06 | 山东省科学院能源研究所 | Method for preparing catalyst by dealkalizing Fenton iron mud |
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| CN114609338B (en) | 2023-11-24 |
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