CN102228829A - Method for preparing bentonite self-assembled green bismuth vanadate advanced water treatment agent - Google Patents
Method for preparing bentonite self-assembled green bismuth vanadate advanced water treatment agent Download PDFInfo
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- CN102228829A CN102228829A CN2011100915168A CN201110091516A CN102228829A CN 102228829 A CN102228829 A CN 102228829A CN 2011100915168 A CN2011100915168 A CN 2011100915168A CN 201110091516 A CN201110091516 A CN 201110091516A CN 102228829 A CN102228829 A CN 102228829A
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention relates to a method for preparing a bentonite self-assembled green bismuth vanadate advanced water treatment agent, which comprises the following steps of: (1) adding bismuth salt and a stabilizing agent into a buffer solution of phosphate, stirring to obtain suspension, dissolving metavanadate in the buffer solution of phosphate, and adding the mixed solution into the suspension to obtain a transparent solution; and 2) regulating the pH value of the transparent solution to be 4.5-9 by using an alkaline solution, adding bentonite, refluxing, filtering to obtain a yellow product, and roasting the obtained product at the temperature of between 150 and 280DEG C for 2 to 4 hours. The cost is low, the preparation method is simple, the requirement on equipment is low and the operability is high; and the water treatment agent can remove high-concentration organic pollutants from water, is suitable for advanced treatment of wastewater, is environment-friendly without secondary pollution, and has the advantages of antibiosis, odor removal, capacity of adsorbing other heavy metal ions and the like.
Description
Technical field
The invention belongs to the preparation field of water treatment agent, the preparation method of the green degree of depth water treatment agent of particularly a kind of bentonite self assembly pucherite.
Background technology
The water in the whole world only about 10% is directly for human used.Lion's share, 70% is used for agricultural, and remaining 20% is industrial.The blowdown of China is about 20% of the whole world, and it has to 5% the fresh water in the whole world.Therefore, the contaminated solution problem puts on the agenda.In textile printing and dyeing, leather, paper industry process, used contaminated environment and harmful auxiliary agent in a large number, these auxiliary agents are the contaminated environment with the form discharging of liquid mostly, biological degradability is poor, toxicity is big, free formaldehyde content height, the content overproof of heavy metal ion.Wherein, the printing and dyeing dressing becomes water heavy polluter especially undisputedly.From starching begin to destarch, wash, scouring and bleaching, mercerising, then dyeing and printing, may also need coating, all relate to washing by this flow process per pass operation, and the every kg of material of per pass operation needs the 20L water consumption.The result is the water consumption of every kilogram of raw cotton in the dressing process nearly 200L that adds up.When the in men's style shirt customization back of a standard when shopper window is showed, above 2000L water production and processing it the time used up (cloth: cotton textiles, 125g/m).
The method of the processing waste water that uses mainly contains at present: physical partition method, biological degradation method, chemical decomposition method, but all there is certain limitation in these methods, are unfavorable for sustainable development.Thereby that people begin to be devoted to develop is efficient, low energy consumption, applied widely and the pollutant clearance technique of deep oxidation ability arranged.In recent years, a lot of scholars are with TiO
2Be used for photocatalytic degradation water organic pollution, but because its greater band gap (3.2eV) only has response in ultraviolet light range, and BiVO
4Have photocatalytic activity in the visible region, can degradable organic pollutant, to reach the purpose that processing environment pollutes.
Summary of the invention
Technical problem to be solved by this invention provides the preparation method of the green degree of depth water treatment agent of a kind of bentonite self assembly pucherite, and this method is simple to operate, and is with low cost, to equipment require low; Water treatment agent of the present invention is applicable to the advanced treating of various waste water, the environmental protection non-secondary pollution.
The preparation method of the green degree of depth water treatment agent of a kind of bentonite self assembly pucherite of the present invention comprises:
(1) bismuth salt, stabilizing agent are joined in the phosphate buffer, stir 15～60min, form suspension; Metavanadate is dissolved in the phosphate buffer, dropwise join in the described suspension, form clear solution, the amount of substance concentration of bismuth salt is 0.01～0.15mol/L in the described clear solution, stabilizing agent amount of substance concentration is 0.01～0.05mol/L, and alum salts amount of substance concentration is 0.01～0.15mol/L partially;
(2) the pH value of regulating above-mentioned clear solution with alkaline solution is 4.5～9, adds bentonite down at 20～100 ℃ then, stirs, and backflow 6-24h filters, yellow product, at last products therefrom is baked 2～4h in 150～280 ℃, get final product; Wherein bismuth salt and bentonitic weight ratio are 1: 5～1: 20.
Bismuth salt described in the step (1) is a kind of in bismuth nitrate, waltherite, bismuth chloride, the bismuth acetate.
Stabilizing agent described in the step (1) is a kind of in disodium ethylene diamine tetraacetate, tetrasodium ethylenediamine tetraacetate, gluconic acid sodium salt, the BTCA.
Metavanadate described in the step (1) is a kind of in metavanadate sodium, potassium metavanadate or the metavanadate ammonium.
The amount of substance concentration of sodium dihydrogen phosphate is 0.025～0.05mol/L in the phosphate buffer described in the step (1), and the amount of substance concentration of dibastic sodium phosphate is 0.05～0.1mol/L.
Alkaline solution described in the step (2) is the NaOH of concentration 0.5mol/L～1.5mol/L or the aqueous solution of potassium hydroxide.
Bentonite has special interlayer characteristic as a kind of mineral clay, can be at its area load BiVO
4Particulate is prepared into loaded catalyst.This loaded photocatalyst can improve the dispersiveness of photochemical catalyst, is beneficial to recycle and reuse.
The present invention utilize bentonitic porous, high adsorption capacity, with characteristics and BiVO such as water is easily separated
4Photocatalytic activity combine, with nanometer BiVO
4Loading on the bentonite of success, be prepared into can be suspended in the waste water and can be smoothly and moisture from the visible-light photocatalysis material of high catalytic activity, and be applied to the advanced treating of waste water, can realize water middle and high concentration organic pollution oxidation removal, rather than transfer to other places, be the technology of an environment-friendly type.
And because bentonitic aboundresources, cheap, so the prepared support type catalysis material of the present invention also has advantage with low cost, has antibiotic, deodorizing simultaneously, can adsorb advantage such as other heavy metal ion.
Beneficial effect
(1) of the present invention with low cost, the preparation method is simple, to equipment require lowly, operability is good;
(2) water treatment agent of the present invention can be removed water middle and high concentration organic pollution, is applicable to the advanced treating of various waste water, the environmental protection non-secondary pollution, and have antibiotic, deodorizing, can adsorb advantages such as other heavy metal ion.
(3) water treatment agent of the present invention can overcome the deficiency of existing bismuthino water treatment agent, and water treatment is effective, can recycle.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
(1) bismuth nitrate, disodium ethylene diamine tetraacetate are joined in the phosphate buffer, stir 15min, form suspension; Metavanadate sodium is dissolved in the phosphate buffer, dropwise join in the described suspension, form clear solution, wherein bismuth nitrate amount of substance concentration be 0.01mol/L, disodium ethylene diamine tetraacetate amount of substance concentration be 0.01mol/L and partially the amount concentration of sodium vanadate matter be 0.01mol/L, form by 0.025mol/L sodium dihydrogen phosphate and 0.05mol/L dibastic sodium phosphate in the phosphate buffer;
(2) be that the pH value that the sodium hydrate aqueous solution of 0.5mol/L is regulated above-mentioned clear solution is 4.5 with concentration, add bentonite down at 60 ℃ then, stir, backflow 6h filters, yellow product, at last products therefrom is baked 2h in 150 ℃, get final product; Wherein bismuth salt and bentonitic weight ratio are 1: 5.
Embodiment 2
(1) waltherite, gluconic acid sodium salt are joined in the phosphate buffer, stir 35min, form suspension; The metavanadate ammonium is dissolved in the phosphate buffer, dropwise join in the described suspension, form clear solution, wherein waltherite amount of substance concentration be 0.06mol/L, gluconic acid sodium salt amount of substance concentration be 0.03mol/L and partially the amount concentration of sodium vanadate matter be 0.01mol/L, form by 0.03mol/L sodium dihydrogen phosphate and 0.08mol/L dibastic sodium phosphate in the phosphate buffer;
(2) be that the pH value that the potassium hydroxide aqueous solution of 1mol/L is regulated above-mentioned clear solution is 7 with concentration, add bentonite down at 80 ℃ then, stir, backflow 15h filters, yellow product, at last products therefrom is baked 3h in 210 ℃, get final product; Wherein bismuth salt and bentonitic weight ratio are 1: 12.
Embodiment 3
(1) bismuth acetate, BTCA are joined in the phosphate buffer, stir 60min, form suspension; Metavanadate sodium is dissolved in the phosphate buffer, dropwise join in the described suspension, form clear solution, wherein bismuth acetate amount of substance concentration be 0.15mol/L, BTCA amount of substance concentration be 0.05mol/L and partially the amount concentration of sodium vanadate matter be 0.15mol/L, form by 0.05mol/L sodium dihydrogen phosphate and 0.1mol/L dibastic sodium phosphate in the phosphate buffer;
(2) be that the pH value that the sodium hydrate aqueous solution of 1.5mol/L is regulated above-mentioned clear solution is 9 with concentration, add bentonite down at 100 ℃ then, stir, backflow 24h filters, yellow product, at last products therefrom is baked 4h in 280 ℃, get final product; Wherein bismuth salt and bentonitic weight ratio are 1: 20.
Experiment: the dyeing waste water with certain printing and dyeing mill of same time sampling serves as to handle object, the water treatment agent that in waste water, adds embodiment 1～example 3 gained of different concentration amounts respectively, through behind 6 hours solar radiations, water treatment agent is as shown in the table to the decolorization of dyeing rate:
| Percent of decolourization | The COD clearance | |
| Embodiment 1 | 98.2％ | 89.2％ |
| Embodiment 2 | 96.3％ | 92.3％ |
| Embodiment 3 | 99.1％ | 91.6％ |
Claims (6)
1. the preparation method of the green degree of depth water treatment agent of a bentonite self assembly pucherite comprises:
(1) bismuth salt, stabilizing agent are joined in the phosphate buffer, stir 15～60min, form suspension; Metavanadate is dissolved in the phosphate buffer, join then in the described suspension, form clear solution, the amount of substance concentration of bismuth salt is 0.01～0.15mol/L in the described clear solution, stabilizing agent amount of substance concentration is 0.01～0.05mol/L, and alum salts amount of substance concentration is 0.01～0.15mol/L partially;
(2) the pH value of regulating above-mentioned clear solution with alkaline solution is 4.5～9, adds bentonite down at 20～100 ℃ then, stirs, and backflow 6-24h filters, yellow product, at last products therefrom is baked 2～4h in 150～280 ℃, get final product; Wherein bismuth salt and bentonitic mass ratio are 1: 5～1: 20.
2. the preparation method of the green degree of depth water treatment agent of a kind of bentonite self assembly pucherite according to claim 1 is characterized in that: the bismuth salt described in the step (1) is a kind of in bismuth nitrate, waltherite, bismuth chloride, the bismuth acetate.
3. the preparation method of the green degree of depth water treatment agent of a kind of bentonite self assembly pucherite according to claim 1 is characterized in that: the stabilizing agent described in the step (1) is a kind of in disodium ethylene diamine tetraacetate, tetrasodium ethylenediamine tetraacetate, gluconic acid sodium salt or the BTCA.
4. the preparation method of the green degree of depth water treatment agent of a kind of bentonite self assembly pucherite according to claim 1 is characterized in that: the metavanadate described in the step (1) is a kind of in sodium metavanadate, potassium metavanadate or the ammonium metavanadate.
5. the preparation method of the green degree of depth water treatment agent of a kind of bentonite self assembly pucherite according to claim 1, it is characterized in that: the amount of substance concentration of sodium dihydrogen phosphate is 0.025～0.05mol/L in the phosphate buffer described in the step (1), and the amount of substance concentration of dibastic sodium phosphate is 0.05～0.1mol/L.
6. the preparation method of the green degree of depth water treatment agent of a kind of bentonite self assembly pucherite according to claim 1, it is characterized in that: the alkaline solution described in the step (2) is the NaOH of concentration 0.5mol/L～1.5mol/L or the aqueous solution of potassium hydroxide.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525115A (en) * | 2014-12-25 | 2015-04-22 | 东华大学 | Preparation method for environment-friendly advanced water treatment agent by combining carbon nano tube and WO3 |
| CN104815641A (en) * | 2015-04-01 | 2015-08-05 | 中国科学院广州地球化学研究所 | Preparation method of bismuth vanadate intercalated montmorillonite visible light photocatalytic material |
| CN106902855A (en) * | 2017-03-01 | 2017-06-30 | 常州大学 | The bismuth phosphate of a kind of vanadium doping/concave convex rod nano composite material and its preparation method and application |
| CN107827154A (en) * | 2017-12-08 | 2018-03-23 | 吉林师范大学 | The preparation method of sword-shaped monoclinic phase pucherite in a kind of hand of preferential exposure (040) crystal face |
| CN109052518A (en) * | 2018-10-16 | 2018-12-21 | 北京泛博清洁技术研究院有限公司 | A kind of fur dyeing waste water treating agent and preparation method thereof, application |
| CN109225243A (en) * | 2018-07-27 | 2019-01-18 | 湖北工业大学 | A kind of preparation method of bismuth ferrite modified alta-mud adsoption catalysis material |
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| CN1683074A (en) * | 2005-03-11 | 2005-10-19 | 南京大学 | Process for preparing visible light responding photo catalytic film layer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525115A (en) * | 2014-12-25 | 2015-04-22 | 东华大学 | Preparation method for environment-friendly advanced water treatment agent by combining carbon nano tube and WO3 |
| CN104525115B (en) * | 2014-12-25 | 2016-08-17 | 东华大学 | A kind of CNT is combined WO3the preparation method of green deep water treatment agent |
| CN104815641A (en) * | 2015-04-01 | 2015-08-05 | 中国科学院广州地球化学研究所 | Preparation method of bismuth vanadate intercalated montmorillonite visible light photocatalytic material |
| CN106902855A (en) * | 2017-03-01 | 2017-06-30 | 常州大学 | The bismuth phosphate of a kind of vanadium doping/concave convex rod nano composite material and its preparation method and application |
| CN107827154A (en) * | 2017-12-08 | 2018-03-23 | 吉林师范大学 | The preparation method of sword-shaped monoclinic phase pucherite in a kind of hand of preferential exposure (040) crystal face |
| CN109225243A (en) * | 2018-07-27 | 2019-01-18 | 湖北工业大学 | A kind of preparation method of bismuth ferrite modified alta-mud adsoption catalysis material |
| CN109225243B (en) * | 2018-07-27 | 2021-03-02 | 湖北工业大学 | Preparation method of bismuth ferrite modified bentonite adsorption catalysis material |
| CN109052518A (en) * | 2018-10-16 | 2018-12-21 | 北京泛博清洁技术研究院有限公司 | A kind of fur dyeing waste water treating agent and preparation method thereof, application |
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Application publication date: 20111102 |