CN110813243A - Preparation method of sodium acetate modified natural zeolite for calcium ion adsorption - Google Patents
Preparation method of sodium acetate modified natural zeolite for calcium ion adsorption Download PDFInfo
- Publication number
- CN110813243A CN110813243A CN201910997648.3A CN201910997648A CN110813243A CN 110813243 A CN110813243 A CN 110813243A CN 201910997648 A CN201910997648 A CN 201910997648A CN 110813243 A CN110813243 A CN 110813243A
- Authority
- CN
- China
- Prior art keywords
- zeolite
- sodium acetate
- acetate solution
- solution
- water
- 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.)
- Pending
Links
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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
-
- 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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/186—Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity
-
- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- 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
- C02F2101/10—Inorganic compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to the field of environmental protection, and discloses a preparation method of sodium acetate modified natural zeolite for calcium ion adsorption, which comprises the following steps: 1) preparing a sodium acetate solution: weighing anhydrous sodium acetate, pouring into a container, and adding water to obtain a sodium acetate solution; 2) crushing zeolite, sieving with a sieve, selecting the sieved zeolite, cleaning the zeolite with deionized water, and drying; 3) the zeolite modification method comprises the following steps: taking zeolite, putting the zeolite into a container filled with a sodium acetate solution, and oscillating the zeolite in a water bath constant temperature oscillator; after the oscillation is finished, the solution is poured out, and the zeolite is cleaned by deionized water and dried. The invention mixes zeolite and sodium acetate solution, and vibrates in a constant temperature oscillator to complete modification. The modified zeolite obtained by the invention can be used for sewage treatment, and the method has the advantages of low cost, simple method and obvious effect.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a preparation method of sodium acetate modified natural zeolite for calcium ion adsorption.
Background
The main structure of natural zeolites is the tetrahedral structure of alumina and silica, which is essentially a silicate. The zeolite resource amount in China is large, and the development and utilization of zeolite for treating wastewater is a very suitable wastewater treatment scheme.
The zeolite is characterized by light weight, internal void volume of 50%, large specific surface area and strong adsorption capacity. The physical property and the chemical property of the surface of the zeolite can be effectively improved by adopting proper modification treatment, so that the adsorption quantity is increased. In addition, inorganic small molecules, ions, pigments and the like in water can be adsorbed by zeolite, the zeolite can adsorb the substances and then release aluminum ions and iron ions, and the released aluminum ions and iron ions can be hydrolyzed into Aln(OH)3n-4 4+，Fen(OH)3n-4 4+They are polynuclear hydroxyl and highly positively charged ligands. They can adsorb, flocculate and settle particles in the waste water, so as to remove pollutants and play a role in purification.
The natural zeolite has rough surface, so that the surface area is larger, the specific surface area is larger and the adsorption performance is better. It is a natural, lightweight filter material that can be used to remove suspended solids, algae, etc., and reduce the turbidity of the effluent. The surar filter of france is fitted with three layers of filter material and the uppermost layer is zeolite with a specific gravity of 1.2 and a particle size of 2.5 to 3.5 mm. However, there are disadvantages in that natural zeolite is used as a filter material and abrasion of crushing is large. It requires some pre-treatment to increase the strength of the zeolite prior to use.
The natural clinoptilolite is a flocculant of silicate water of alkali metals and alkaline earth metals, has large specific surface area, strong lattice, uniform micropores and acid-base stability, and the zeolite lattice cavity has strong coulomb field and Ca2+Has stronger adsorption capacity, and canIs regenerated by soaking in NaOH-NaCl regenerating solution, Ca2+Reduction to Ca (OH)2The CaO is removed by thermal decomposition, blowing off and removing in a CaO state.
Natural clinoptilolite and Ca2+Can be represented by the following formula:
A+Z-+Ca2+→Ca2+Z-+A-
wherein A is the anionic framework of the zeolite, i.e. the anionic framework of the aluminosilicate;
x-exchange ion.
The calcium and magnesium in the dehydration process of the selective ion exchange method are used as ion exchangers of calcium ions and magnesium ions in an ion exchange column, and the calcium and the magnesium are removed by virtue of an ion exchange reaction. The advantages of this approach are many: can efficiently remove calcium and magnesium ions, is convenient for operation and control of equipment and has simple structure. Also, this method has disadvantages: the ion exchange requires a large amount of exchanger, and the exchanger needs to be regenerated for many times, so that the cost is high.
The natural zeolite is simple to be mined and not very complicated to be processed, and can be used after being processed. The price of the activated carbon is very low, hundreds of yuan is needed for each ton of raw materials, the cost after pretreatment is within 1000 yuan, and the activated carbon is just equal to 1/5 of the market price of activated carbon. In terms of environmental protection, natural zeolites can be used to purify industrial and drinking water.
With the increasing awareness of environmental concerns, the amount of natural zeolites used in the field has also increased. And its adsorption characteristics are directly related to its inherent structure, and therefore should be widely used in practice. Although zeolites have many advantages in treating slightly contaminated water, adsorbing impurities, and as filtration materials. However, the processing technology of the natural zeolite is not mature, and the related application needs a great deal of research and practice to be explored.
Disclosure of Invention
In order to solve the technical problems, the invention provides a preparation method of sodium acetate modified natural zeolite for calcium ion adsorption. The modified zeolite obtained by the invention can be used for sewage treatment, and the method has the advantages of low cost, simple method and obvious effect.
The specific technical scheme of the invention is as follows: a preparation method of sodium acetate modified natural zeolite for calcium ion adsorption comprises the following steps:
1) preparing a sodium acetate solution: anhydrous sodium acetate is weighed and poured into a container, and water is added to obtain a sodium acetate solution.
2) Pulverizing zeolite, sieving with sieve, selecting sieved zeolite, washing zeolite with deionized water, and oven drying.
3) The zeolite modification method comprises the following steps: taking zeolite, putting the zeolite into a container filled with a sodium acetate solution, and oscillating the zeolite in a water bath constant temperature oscillator; after the oscillation is finished, the solution is poured out, and the zeolite is cleaned by deionized water and dried.
Preferably, in the step 1), the concentration of the sodium acetate solution is 0.1-0.3 mol/L. Further preferably 0.15 to 0.25 mol/L; particularly preferably 0.17 to 0.23 mol/L.
Preferably, in step 2), the sieved zeolite is 20-80 mesh. Further preferably 20 to 60 mesh; particularly preferably 20-40 mesh.
Preferably, in step 3), the mass ratio of the zeolite to the sodium acetate solution is 1: 25 to 100, more preferably 1: 25 to 75, and particularly preferably 1: 40 to 60.
Preferably, in the step 3), the water bath is subjected to constant temperature oscillation at the temperature of 20-50 ℃ for 6-20 hours. Further preferably, the oscillation temperature is 25-45 ℃, and the oscillation time is 8-16 hours; particularly preferably, the shaking temperature is 30-40 ℃, and the shaking time is 10-14 hours.
Compared with the prior art, the invention has the beneficial effects that: the invention mixes zeolite and sodium acetate solution, and vibrates in a constant temperature oscillator to complete modification. The modified zeolite obtained by the invention can be used for sewage treatment, and the method has the advantages of low cost, simple method and obvious effect.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
1) Preparing an EDTA solution: weighing disodium ethylene diamine tetraacetate, adding water and sodium hydroxide; after dissolving, transferring to another container, adding water, and shaking uniformly; calibration with calcium carbonate, according to the formula:
in the formula:
V1volume of EDTA standard solution consumed in titration, mL;
M-EDTA standard solution molar concentration;
v is the volume of the taken water sample, mL;
40.08-atomic weight of calcium.
The concentration of the finally obtained EDTA solution was 0.0145 mol/L.
2) Preparation of calcein-phenolphthalein mixed indicator: weighing calcein, phenolphthalein and potassium nitrate, mixing, grinding, and mixing. The mass ratio of the calcein to the phenolphthalein to the potassium nitrate is 1: 50.
3) Preparing a sodium acetate solution: anhydrous sodium acetate is weighed and poured into a container, and water is added to obtain a sodium acetate solution with the concentration of 0.20 mol/L.
4) Pulverizing zeolite, sieving with sieve, selecting 20-40 mesh zeolite, washing zeolite with deionized water, and oven drying.
5) The zeolite modification method comprises the following steps: taking zeolite, putting the zeolite into a container filled with a sodium acetate solution, and then oscillating the zeolite in a water bath constant temperature oscillator at the temperature of 35 ℃ for 12 hours. After the oscillation is finished, the solution is poured out, and the zeolite is cleaned by deionized water and dried. The mass ratio of the zeolite to the sodium acetate solution is 1: 50.
6) Preparing a simulated water sample by using tap water in a laboratory: weighing anhydrous calcium chloride, dissolving in water, diluting, and placing in a large wide-mouth bottle. Titration was performed with EDTA standard solution, and the endpoint was determined when the green fluorescence disappeared and mutated to a purple color. Note the volume of EDTA solution consumed and calculate the calcium ion concentration from the formula:
in the formula:
V1volume of EDTA standard solution consumed in titration (mL);
M-EDTA standard solution molar concentration;
v-volume of water sample taken (mL);
40.08-atomic weight of calcium.
Simulating Ca in water sample2+The concentration was 1500 mg/L.
Exchange rate experiments: taking zeolite and a 25mL water sample, filling the zeolite and the water sample into a polyvinyl chloride bottle, oscillating the polyvinyl chloride bottle in a constant-temperature oscillator at the temperature of 25 ℃, sequentially taking supernatant liquid every 10 minutes to measure the concentration of calcium ions, and calculating the calcium ions in balance.
Isothermal exchange experiments: 0.65g, 0.70g, 0.75g, 0.80g, 0.85g, 0.90g, 0.95g and 1.00g of zeolite and 25mL of water sample are put into a polyvinyl chloride bottle, placed in a constant temperature oscillator (25 ℃) to oscillate for 12 hours, centrifuged, and supernatant is taken to measure the calcium ion concentration and calculate the calcium ion and zeolite exchange capacity at equilibrium.
Knowing that the weight of zeolite in a polyvinyl chloride bottle is 0.491g, carrying out titration experiment after oscillating for 12h in a constant temperature oscillator, consuming 5.60ml of EDTA solution when green fluorescence disappears, and obtaining C by calculatione128.29mg/L, according to the formula qe＝(C0-Ce) V/M, Ca is calculated2+The exchange capacity with zeolite was 0.540mg/g, giving a saturated exchange capacity of 7.53 mg/g.
Example 2
1) Preparing an EDTA solution: weighing disodium ethylene diamine tetraacetate, adding water and sodium hydroxide; after dissolving, transferring to another container, adding water, and shaking uniformly; calibration with calcium carbonate, according to the formula:
in the formula:
V1EDTA target consumed in titrationVolume of quasi-solution, mL;
M-EDTA standard solution molar concentration;
v is the volume of the taken water sample, mL;
40.08-atomic weight of calcium.
The concentration of the finally obtained EDTA solution was 0.0145 mol/L.
2) Preparation of calcein-phenolphthalein mixed indicator: weighing calcein, phenolphthalein and potassium nitrate, mixing, grinding, and mixing. The mass ratio of the calcein to the phenolphthalein to the potassium nitrate is 1: 50.
3) Preparing a sodium acetate solution: anhydrous sodium acetate is weighed and poured into a container, and water is added to obtain a sodium acetate solution with the concentration of 0.20 mol/L.
4) Pulverizing zeolite, sieving with sieve, selecting 20-40 mesh zeolite, washing zeolite with deionized water, and oven drying.
5) The zeolite modification method comprises the following steps: taking zeolite, putting the zeolite into a container filled with a sodium acetate solution, and then oscillating the zeolite in a water bath constant temperature oscillator at the temperature of 35 ℃ for 12 hours. After the oscillation is finished, the solution is poured out, and the zeolite is cleaned by deionized water and dried. The mass ratio of the zeolite to the sodium acetate solution is 1: 45.
6) preparing a simulated water sample by using tap water in a laboratory: weighing anhydrous calcium chloride, dissolving in water, diluting, and placing in a large wide-mouth bottle. Titration was performed with EDTA standard solution, and the endpoint was determined when the green fluorescence disappeared and mutated to a purple color. Note the volume of EDTA solution consumed and calculate the calcium ion concentration from the formula:
in the formula:
V1volume of EDTA standard solution consumed in titration (mL);
M-EDTA standard solution molar concentration;
v-volume of water sample taken (mL);
40.08-atomic weight of calcium.
Simulation ofCa in water sample2+The concentration was 1500 mg/L.
Exchange rate experiments: taking zeolite and a 25mL water sample, filling the zeolite and the water sample into a polyvinyl chloride bottle, oscillating the polyvinyl chloride bottle in a constant-temperature oscillator at the temperature of 20 ℃, sequentially taking supernatant liquid every 10 minutes to measure the concentration of calcium ions, and calculating the calcium ions in balance.
Isothermal exchange experiments: 0.65g, 0.70g, 0.75g, 0.80g, 0.85g, 0.90g, 0.95g and 1.00g of zeolite and 25mL of water sample are put into a polyvinyl chloride bottle, the polyvinyl chloride bottle is placed in a constant temperature oscillator (25 ℃) to oscillate for 6 hours, the polyvinyl chloride bottle is centrifuged, supernatant is taken to measure the calcium ion concentration, and the calcium ion and zeolite exchange capacity at equilibrium is calculated.
Knowing that the weight of zeolite in a polyvinyl chloride bottle is 0.496g, carrying out titration experiment after oscillating for 6h in a constant temperature oscillator, consuming 5.43mLEDTA solution when green fluorescence disappears, and obtaining C by calculatione127.25mg/L, and according to the formula qe ═ C0-Ce) V/M, Ca is calculated2+The exchange capacity with zeolite was 0.512mg/g, giving a saturated exchange capacity of 7.35 mg/g.
Example 3
1) Preparing an EDTA solution: weighing disodium ethylene diamine tetraacetate, adding water and sodium hydroxide; after dissolving, transferring to another container, adding water, and shaking uniformly; calibration with calcium carbonate, according to the formula:
in the formula:
V1volume of EDTA standard solution consumed in titration, mL;
M-EDTA standard solution molar concentration;
v is the volume of the taken water sample, mL;
40.08-atomic weight of calcium.
The concentration of the finally obtained EDTA solution was 0.0145 mol/L.
2) Preparation of calcein-phenolphthalein mixed indicator: weighing calcein, phenolphthalein and potassium nitrate, mixing, grinding, and mixing. The mass ratio of the calcein to the phenolphthalein to the potassium nitrate is 1: 50.
3) Preparing a sodium acetate solution: anhydrous sodium acetate is weighed and poured into a container, and water is added to obtain a sodium acetate solution with the concentration of 0.20 mol/L.
4) Pulverizing zeolite, sieving with sieve, selecting 20-40 mesh zeolite, washing zeolite with deionized water, and oven drying.
5) The zeolite modification method comprises the following steps: taking zeolite, putting the zeolite into a container filled with a sodium acetate solution, and then oscillating the zeolite in a water bath constant temperature oscillator at the temperature of 35 ℃ for 12 hours. After the oscillation is finished, the solution is poured out, and the zeolite is cleaned by deionized water and dried. The mass ratio of the zeolite to the sodium acetate solution is 1: 55.
6) Preparing a simulated water sample by using tap water in a laboratory: weighing anhydrous calcium chloride, dissolving in water, diluting, and placing in a large wide-mouth bottle. Titration was performed with EDTA standard solution, and the endpoint was determined when the green fluorescence disappeared and mutated to a purple color. Note the volume of EDTA solution consumed and calculate the calcium ion concentration from the formula:
in the formula:
V1volume of EDTA standard solution consumed in titration (mL);
M-EDTA standard solution molar concentration;
v-volume of water sample taken (mL);
40.08-atomic weight of calcium.
Simulating Ca in water sample2+The concentration was 1500 mg/L.
Exchange rate experiments: taking zeolite and a 25mL water sample, filling the zeolite and the water sample into a polyvinyl chloride bottle, oscillating the polyvinyl chloride bottle in a constant-temperature oscillator at the temperature of 20 ℃, sequentially taking supernatant liquid every 10 minutes to measure the concentration of calcium ions, and calculating the calcium ions in balance.
Isothermal exchange experiments: 0.65g, 0.70g, 0.75g, 0.80g, 0.85g, 0.90g, 0.95g and 1.00g of zeolite and 25mL of water sample are put into a polyvinyl chloride bottle, the polyvinyl chloride bottle is placed in a constant temperature oscillator (25 ℃) to oscillate for 6 hours, the polyvinyl chloride bottle is centrifuged, supernatant is taken to measure the calcium ion concentration, and the calcium ion and zeolite exchange capacity at equilibrium is calculated.
Knowing that the weight of zeolite in a polyvinyl chloride bottle is 0.495g, carrying out titration experiment after oscillating for 8h in a constant temperature oscillator, consuming 5.48ml of LEDTA solution when green fluorescence disappears, and obtaining C by calculatione127.33mg/L, and according to the formula qe ═ C0-Ce) V/M, Ca is calculated2+The exchange capacity with zeolite was 0.518mg/g, giving a saturated exchange capacity of 7.41 mg/g.
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. A preparation method of sodium acetate modified natural zeolite for calcium ion adsorption is characterized by comprising the following steps:
1) preparing a sodium acetate solution: weighing anhydrous sodium acetate, pouring into a container, and adding water to obtain a sodium acetate solution;
2) crushing zeolite, sieving with a sieve, selecting the sieved zeolite, cleaning the zeolite with deionized water, and drying;
3) the zeolite modification method comprises the following steps: taking zeolite, putting the zeolite into a container filled with a sodium acetate solution, and oscillating the zeolite in a water bath constant temperature oscillator; after the oscillation is finished, the solution is poured out, and the zeolite is cleaned by deionized water and dried.
2. The method of claim 1, wherein in step 1), the concentration of the sodium acetate solution is 0.1 to 0.3 mol/L.
3. The method of claim 2, wherein in step 1), the concentration of the sodium acetate solution is 0.15 to 0.25 mol/L.
4. The method of claim 3, wherein in step 1), the concentration of the sodium acetate solution is 0.17 to 0.23 mol/L.
5. The method of claim 1, wherein in step 2), the sieved zeolite is 20-80 mesh.
6. The method of claim 5, wherein in step 2), the sieved zeolite is 20-60 mesh.
7. The method of claim 6, wherein in step 2), the sieved zeolite is 20-40 mesh.
8. The method of claim 1, wherein in step 3), the mass ratio of the zeolite to the sodium acetate solution is 1: 25 to 100.
9. The method of claim 1, wherein in step 3), the temperature of the water bath is 20-50 ℃ and the time is 6-20 hours.
10. The method of claim 1, wherein in step 3), the temperature of the water bath is kept at a constant temperature for 8 to 16 hours at 25 to 45 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910997648.3A CN110813243A (en) | 2019-10-18 | 2019-10-18 | Preparation method of sodium acetate modified natural zeolite for calcium ion adsorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910997648.3A CN110813243A (en) | 2019-10-18 | 2019-10-18 | Preparation method of sodium acetate modified natural zeolite for calcium ion adsorption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110813243A true CN110813243A (en) | 2020-02-21 |
Family
ID=69549772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910997648.3A Pending CN110813243A (en) | 2019-10-18 | 2019-10-18 | Preparation method of sodium acetate modified natural zeolite for calcium ion adsorption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110813243A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044107A (en) * | 2022-06-06 | 2022-09-13 | 河南农业大学 | Chitosan-based passive air-conditioning preservative film, and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020076376A1 (en) * | 2000-12-19 | 2002-06-20 | Qisheng Huo | Synthesis of aluminum rich afi zeolite |
| CN101590397A (en) * | 2009-06-25 | 2009-12-02 | 同济大学 | A kind of preparation method of modified zeolite adsorbent and application |
| CN102755913A (en) * | 2012-06-28 | 2012-10-31 | 燕山大学 | Method for improving ammonium exchange capacity of natural zeolite ammonium |
| CN104971701A (en) * | 2014-04-01 | 2015-10-14 | 上海工程技术大学 | Polysaccharide modified natural zeolite suspension solution as well as preparation method and application thereof |
| CN106732343A (en) * | 2016-11-22 | 2017-05-31 | 衢州学院 | A kind of preparation method of modified zeolite and the modified zeolite for preparing |
-
2019
- 2019-10-18 CN CN201910997648.3A patent/CN110813243A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020076376A1 (en) * | 2000-12-19 | 2002-06-20 | Qisheng Huo | Synthesis of aluminum rich afi zeolite |
| CN101590397A (en) * | 2009-06-25 | 2009-12-02 | 同济大学 | A kind of preparation method of modified zeolite adsorbent and application |
| CN102755913A (en) * | 2012-06-28 | 2012-10-31 | 燕山大学 | Method for improving ammonium exchange capacity of natural zeolite ammonium |
| CN104971701A (en) * | 2014-04-01 | 2015-10-14 | 上海工程技术大学 | Polysaccharide modified natural zeolite suspension solution as well as preparation method and application thereof |
| CN106732343A (en) * | 2016-11-22 | 2017-05-31 | 衢州学院 | A kind of preparation method of modified zeolite and the modified zeolite for preparing |
Non-Patent Citations (4)
| Title |
|---|
| 刘奔逸: "沸石分子筛对钙离子的吸附研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 林海 等: "微波改造沸石环境材料的表征与脱氮效果", 《东北大学学报(自然科学版)》 * |
| 赵启文 等: "斜发沸石对锌冶炼废水中钙镁离子的吸附研究", 《无机盐工业》 * |
| 郑水林 等: "《粉体表面改性 第4版》", 30 June 2019, 中国建材工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044107A (en) * | 2022-06-06 | 2022-09-13 | 河南农业大学 | Chitosan-based passive air-conditioning preservative film, and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Onyango et al. | Adsorptive removal of phosphate ions from aqueous solution using synthetic zeolite | |
| CN102527347B (en) | Magnetic chitosan/cationic surface active agent modified zeolite adsorbent and preparation method and application thereof | |
| JP6618803B2 (en) | A method for selective removal of strontium radionuclides from water streams. | |
| CN101279239B (en) | Organic modified mineral adsorbing material and method of producing the same | |
| CN101549873B (en) | Surface active agent modification zeolites, method of preparing thereof and usage | |
| Wang et al. | Quantifying gel properties of industrial waste-based geopolymers and their application in Pb2+ and Cu2+ removal | |
| CN110280209B (en) | Water body phosphorus adsorption material and preparation and application methods thereof | |
| CN107430897A (en) | The processing method of radioactive liquid waste and its application | |
| CN103848469A (en) | Method for processing municipal wastewater | |
| CN113582285B (en) | Black and odorous water composite phosphorus locking agent and preparation method and application thereof | |
| Al-Mashaqbeh et al. | Immobilization of organic dyes in geopolymeric cementing material | |
| Cheng et al. | The adsorption of Rhodamine B in water by modified zeolites | |
| Mbuvi | Adsorption kinetics and isotherms of methylene blue by geopolymers derived from common clay and rice husk ash | |
| Hudaib | Treatment of real industrial wastewater with high sulfate concentrations using modified Jordanian kaolin sorbent: batch and modelling studies | |
| He et al. | Enhanced adsorption of fluoride from aqueous solution using an iron‐modified attapulgite adsorbent | |
| CN110813243A (en) | Preparation method of sodium acetate modified natural zeolite for calcium ion adsorption | |
| Zhao et al. | Adsorption of methylene blue and methyl orange from aqueous solution by iron oxide-coated zeolite in fi xed bed column: predicted curves | |
| CN106669590B (en) | It is a kind of based on the heavy metal mesoporous adsorption material and its preparation method and application that molybdenum ore tailings is raw material | |
| Vimonses et al. | Development of a pilot fluidised bed reactor system with a formulated clay–lime mixture for continuous removal of chemical pollutants from wastewater | |
| Kaewmee et al. | Adsorptive reduction of water hardness by a highly porous and regenerative geopolymer fabricated from coal fly ash waste with low-temperature calcination | |
| Tang et al. | Adsorption Characteristics and Charge Transfer Kinetics of Fluoride in Water by Different Adsorbents | |
| Zhang et al. | Synthesis of hierarchically porous Na-P zeotype composites for ammonium removal | |
| Ramírez et al. | Kinetic and thermodynamic study of arsenic (V) adsorption on P and W aluminum functionalized zeolites and its regeneration | |
| CN112844304A (en) | Sodium pyrophosphate modified water purification sludge/zeolite composite adsorbent and preparation method and application thereof | |
| CN104353408A (en) | Preparation method for modified porous SiO2 |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |