CN104722264A - Method for removing arsenic and fluorine in waste water simultaneously by using lanthanum-doped hydrotalcite - Google Patents
Method for removing arsenic and fluorine in waste water simultaneously by using lanthanum-doped hydrotalcite Download PDFInfo
- Publication number
- CN104722264A CN104722264A CN201510099715.1A CN201510099715A CN104722264A CN 104722264 A CN104722264 A CN 104722264A CN 201510099715 A CN201510099715 A CN 201510099715A CN 104722264 A CN104722264 A CN 104722264A
- Authority
- CN
- China
- Prior art keywords
- fluorine
- arsenic
- hydrotalcite
- solution
- centrifugal
- 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
Abstract
According to the invention, a coprecipitation method is adopted to prepare Mg/Al(3:1) type hydrotalcite (LDHs) and Mg/Al/La(3:1:0.1) type hydrotalcite (LDHs), calcined hydrotalcite (LDOs) is obtained by calcining at high temperature of 450 DEG C and a nano adsorbing material with selective adsorption for arsenic and fluorine is obtained. The hydrotalcite material has good adsorbing effect for the arsenic and the fluorine in water, is a more ideal material for adsorbing the arsenic and the fluorine, and is large in adsorbing capacity and obvious in removing effect; and since the rare-earth metal lanthanum is doped into the hydrotalcite, the material is more beneficial for a hydrotalcite-like compound to adsorb the arsenic and the fluorine in a water body, is a novel environment-friendly type material and can provide certain theoretical reference for treating the pollution of the water environment.
Description
Technical field
The present invention relates to and a kind ofly mix the method that arsenic in waste water fluorine removed by lanthanum hydrotalcite simultaneously.
Background technology
The pollution of water body arsenic and fluorine is global problem, and China is one of area suffering arsenic and fluoride pollution comparatively serious.In order to improve water body arsenic and fluoride pollution situation, the removal research removal of arsenic in water body and fluorine being studied to especially arsenic and fluorine is significantly.
The method of administering arsenic fluorine ion conventional both at home and abroad at present has absorption method, Coagulation Method, ion-exchange, the precipitation method, electrodialysis and hyperfiltration etc., wherein absorption method has stability by force, and simple to operate, removal effect is good, the features such as non-secondary pollution, meet the requirement that economy is practical again.Conventional sorbing material is as all higher in costs such as active carbon, bone carbon, activated aluminas, and adsorption capacity is low, and this limits them and uses on a large scale.Hydrotalcite-based compound has unique layer structure and becomes a kind of well anion adsorbent, and it is with low cost, and adsorption capacity is high, can not cause secondary pollution.Even but domestic and international not enough to removing research while arsenic in water body and fluorine to doping hydrotalcite at present.
Magnalium hydrotalcite of the present invention is removed on the basis of water body arsenic fluorine, by the rare-earth elements of lanthanum that foreign atom radius is larger, synthesis magnesium aluminium lanthanum hydrotalcite, improve surface and the architectural feature of class magnalium hydrotalcite, its adsorption effect to the arsenic fluorine ion coexisted in water is probed in contrast, it is large that its result shows its adsorption capacity, and removal effect is obvious, is a kind of novel ep-type material.
Summary of the invention
The object of this invention is to provide and a kind ofly mix the method that arsenic in waste water fluorine removed by lanthanum hydrotalcite simultaneously
Lanthanum hydrotalcite of mixing provided by the invention is removed arsenic in waste water fluorine method step simultaneously and is:
1) solution A is by Mg (NO
3)
26H
2o, Al (NO
3)
39H
2o, La (NO
3)
3according to the configuration of certain mol proportion example;
2) B solution is by NaOH and Na
2cO
3configuration;
3) solution B is transferred to twoport round-bottomed flask and at the uniform velocity stirs as in 60 DEG C of thermostatical oil baths, solution A pours rapidly rear vigorous stirring 1h into, intensification oil bath pan to 100 DEG C, mixed solution shifts aging 24h in autoclave, and now solution is strong basicity, with ultrapure water sediment for several times to pH be 7, centrifugal, residue is in 120 DEG C of dry 24h, and grinding is sieved, obtain hydrotalcite material LDHs, take out portion and obtain its roasting sample LDOs at 450 DEG C of roasting 24h;
4) getting 50 mg adsorbents, to put into 50 mL mass concentrations be 0. 5,1.25,2.5,5.0,10.0 mg/L, and pH=7 arsenic fluorine coexists in liquid, and vibrate 24 h in oscillator, centrifugal, filters.
5) get 50 mg adsorbents to put into and to coexist liquid with the arsenic fluorine that the 50mL mass concentration that pH to be adjusted to 2,4,6,8,10 by NaOH solution and HCl solution is 2.5 mg/L, vibrate 24 h in warm oscillator, centrifugal, filters.
6) getting 50 mg adsorbents, to put into 50 mL mass concentrations be that 2.5 mg/L arsenic fluorine coexist liquid, and vibrate 24 h in oscillator, in 1,2,4,6,10,24h timing sampling, centrifugal, filter.
The present invention Mg/Al(3:1 that adopted coprecipitation to prepare) type hydrotalcite (LDHs), and Mg/Al/La(3:1:0.1) type hydrotalcite (LDHs), and under 450 DEG C of high temperature, calcining obtains the hydrotalcite (LDOs) after calcining, and obtains a class has selective absorption nano adsorption material to arsenic fluorine.Hydrotalcite material of the present invention has good adsorption effect to the arsenic in water and fluorine, is the material of ideal arsenic-adsorbing fluorine, and its adsorption capacity is large, and removal effect is obvious.Rare earth lanthanum doping is entered hydrotalcite, and being more conducive to the arsenic in houghite adsorbed water body and fluorine, is a kind of emerging ep-type material, can provide certain theoretical reference for administering water environment pollution.。
Detailed description of the invention
Example one: getting 50 mg adsorbents, to put into 50 mL mass concentrations be 0. 5,1.25,2.5,5.0,10.0 mg/L, and pH=7 arsenic fluorine coexists in liquid, and vibrate 24 h in oscillator, centrifugal, filters; Learning after measured, is within the scope of 0.5-10.0 mg/L in concentration, along with the increase of arsenic, fluorine initial concentration, magnesium aluminium lanthanum LDOs its progressively 95.41% is reduced to along with the increase adsorption efficiency of concentration by 100% to the absorption of As, change not obvious; Magnalium LDOs reaches best to the adsorption efficiency of As when concentration is 2.5 mg/L, be 77.93%.Magnesium aluminium lanthanum LDOs and magnalium LDOs is best to the adsorption efficiency of fluorine when concentration is 2.5 mg/L, is respectively 85.27% and 67.93%.
Example two: get 50 mg adsorbents and put into and to coexist liquid with the arsenic fluorine that the 50mL mass concentration that pH to be adjusted to 2,4,6,8,10 by NaOH solution and HCl solution is 2.5 mg/L, vibrate 24 h in warm oscillator, centrifugal, filters.Learn after measured, the arsenic removal efficiency of magnesium aluminium lanthanum LDOs when pH is 2.0 is 83.10%, reaches 94.10% when pH is 6.0.
Example three: getting 50 mg adsorbents, to put into 50 mL mass concentrations be that 2.5 mg/L arsenic fluorine coexist liquid, and vibrate 24 h in oscillator, in 1,2,4,6,10,24h timing sampling, centrifugal, filter.Learn after measured, when 6h, 93.63% and 88.05% are reached respectively to the clearance of arsenic and fluorine.
The present invention Mg/Al(3:1 that adopted coprecipitation to prepare) type hydrotalcite (LDHs), and Mg/Al/La(3:1:0.1) type hydrotalcite (LDHs), and under 450 DEG C of high temperature, calcining obtains the hydrotalcite (LDOs) after calcining, and obtains a class has selective absorption nano adsorption material to arsenic fluorine.Hydrotalcite material of the present invention has good adsorption effect to the arsenic in water and fluorine, is the material of ideal arsenic-adsorbing fluorine, and its adsorption capacity is large, and removal effect is obvious.Rare earth lanthanum doping is entered hydrotalcite, and being more conducive to the arsenic in houghite adsorbed water body and fluorine, is a kind of novel ep-type material, can provide certain theoretical reference for administering water environment pollution.
Claims (1)
1. mix its feature of method that lanthanum hydrotalcite removes arsenic in waste water fluorine simultaneously and comprise the steps: for one kind
1) solution A is by Mg (NO
3)
26H
2o, Al (NO
3)
39H
2o, La (NO
3)
3according to the configuration of certain mol proportion example;
2) B solution is by NaOH and Na
2cO
3configuration;
3) solution B is transferred to twoport round-bottomed flask and at the uniform velocity stirs as in 60 DEG C of thermostatical oil baths, solution A pours rapidly rear vigorous stirring 1h into, intensification oil bath pan to 100 DEG C, mixed solution shifts aging 24h in autoclave, and now solution is strong basicity, with ultrapure water sediment for several times to pH be 7, centrifugal, residue is in 120 DEG C of dry 24h, and grinding is sieved, obtain hydrotalcite material LDHs, take out portion and obtain its roasting sample LDOs at 450 DEG C of roasting 24h;
4) getting 50 mg adsorbents, to put into 50 mL mass concentrations be 0. 5,1.25,2.5,5.0,10.0 mg/L, and pH=7 arsenic fluorine coexists in liquid, and vibrate 24 h in oscillator, centrifugal, filters.
5) get 50 mg adsorbents to put into and to coexist liquid with the arsenic fluorine that the 50mL mass concentration that pH to be adjusted to 2,4,6,8,10 by NaOH solution and HCl solution is 2.5 mg/L, vibrate 24 h in warm oscillator, centrifugal, filters.
6) getting 50 mg adsorbents, to put into 50 mL mass concentrations be that 2.5 mg/L arsenic fluorine coexist liquid, and vibrate 24 h in oscillator, in 1,2,4,6,10,24h timing sampling, centrifugal, filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510099715.1A CN104722264A (en) | 2015-03-07 | 2015-03-07 | Method for removing arsenic and fluorine in waste water simultaneously by using lanthanum-doped hydrotalcite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510099715.1A CN104722264A (en) | 2015-03-07 | 2015-03-07 | Method for removing arsenic and fluorine in waste water simultaneously by using lanthanum-doped hydrotalcite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104722264A true CN104722264A (en) | 2015-06-24 |
Family
ID=53447039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510099715.1A Pending CN104722264A (en) | 2015-03-07 | 2015-03-07 | Method for removing arsenic and fluorine in waste water simultaneously by using lanthanum-doped hydrotalcite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104722264A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140106A (en) * | 2016-08-22 | 2016-11-23 | 青岛引黄济青水务有限责任公司 | A kind of method utilizing Entermorpha to prepare water body fluoride removal material |
| CN106673111A (en) * | 2017-01-10 | 2017-05-17 | 苏州大学 | Method for treating selenate radical containing waste water |
| CN109289772A (en) * | 2018-10-30 | 2019-02-01 | 蔡菁菁 | A kind of carbon nanotube/hydrotalcite material and preparation method removing nitrate nitrogen in water removal |
| CN111282583A (en) * | 2020-02-19 | 2020-06-16 | 天津大学 | Fluorine-doped hydrotalcite material loaded metal-based catalyst, preparation method and application |
| CN112237897A (en) * | 2020-09-04 | 2021-01-19 | 南京大学 | Layered double-metal-based nano lanthanum material and preparation method and application thereof |
| CN114602419A (en) * | 2022-03-18 | 2022-06-10 | 华北水利水电大学 | Mg/Al hydrotalcite, calcined hydrotalcite-like compound, modified hydrotalcite, preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765515A (en) * | 2005-09-01 | 2006-05-03 | 北京化工大学 | Laminated structure treatment compound and treatment method of of fluorinated water |
| CN1830822A (en) * | 2006-03-21 | 2006-09-13 | 吉林大学 | Material for purication anion polluted water |
| JP2012082330A (en) * | 2010-10-13 | 2012-04-26 | Taiheiyo Cement Corp | Insolubilization material of heavy metals, and insolubilization method of heavy metals |
-
2015
- 2015-03-07 CN CN201510099715.1A patent/CN104722264A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765515A (en) * | 2005-09-01 | 2006-05-03 | 北京化工大学 | Laminated structure treatment compound and treatment method of of fluorinated water |
| CN1830822A (en) * | 2006-03-21 | 2006-09-13 | 吉林大学 | Material for purication anion polluted water |
| JP2012082330A (en) * | 2010-10-13 | 2012-04-26 | Taiheiyo Cement Corp | Insolubilization material of heavy metals, and insolubilization method of heavy metals |
Non-Patent Citations (2)
| Title |
|---|
| 郑国河等: "镧掺杂纳米材料合成及其高氟选择性吸附特性", 《环境化学》 * |
| 郭亚祺等: "煅烧的水滑石同时去除水体中砷和氟", 《环境工程学报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140106A (en) * | 2016-08-22 | 2016-11-23 | 青岛引黄济青水务有限责任公司 | A kind of method utilizing Entermorpha to prepare water body fluoride removal material |
| CN106140106B (en) * | 2016-08-22 | 2019-07-12 | 青岛引黄济青水务有限责任公司 | A method of water body fluoride removal material is prepared using Enteromorpha |
| CN106673111A (en) * | 2017-01-10 | 2017-05-17 | 苏州大学 | Method for treating selenate radical containing waste water |
| CN106673111B (en) * | 2017-01-10 | 2020-09-08 | 苏州大学 | Method for treating wastewater containing selenate |
| CN109289772A (en) * | 2018-10-30 | 2019-02-01 | 蔡菁菁 | A kind of carbon nanotube/hydrotalcite material and preparation method removing nitrate nitrogen in water removal |
| CN111282583A (en) * | 2020-02-19 | 2020-06-16 | 天津大学 | Fluorine-doped hydrotalcite material loaded metal-based catalyst, preparation method and application |
| CN111282583B (en) * | 2020-02-19 | 2022-11-18 | 天津大学 | Fluorine-doped hydrotalcite material loaded metal-based catalyst, preparation method and application |
| CN112237897A (en) * | 2020-09-04 | 2021-01-19 | 南京大学 | Layered double-metal-based nano lanthanum material and preparation method and application thereof |
| CN114602419A (en) * | 2022-03-18 | 2022-06-10 | 华北水利水电大学 | Mg/Al hydrotalcite, calcined hydrotalcite-like compound, modified hydrotalcite, preparation method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104722264A (en) | Method for removing arsenic and fluorine in waste water simultaneously by using lanthanum-doped hydrotalcite | |
| Lee et al. | Enhanced adsorptive removal of fluoride using mesoporous alumina | |
| Mandal et al. | Adsorption of fluoride ions by Zn–Al layered double hydroxides | |
| CN103212364A (en) | Ferro-manganese composite oxide as well as preparation method and application thereof in removing arsenic in water | |
| CN103706328B (en) | The order mesoporous carbon adsorbent of aza magnetic, preparation method and application | |
| CN106881067B (en) | A kind of modified houghite adsorbent and its application | |
| CN103285804A (en) | Preparation method of defluorinating adsorbent | |
| CN102351225A (en) | Method for preparing chloride ion treating medicament | |
| CN101164688A (en) | Organic/inorganic substance layered composite functional material and preparation method thereof | |
| CN102872790A (en) | Sulfate radical sorbent magnetic nanometer zirconium hydroxide and preparation method thereof | |
| US20220126265A1 (en) | Adsorbent, preparation method and application thereof technical field | |
| CN109012565A (en) | A kind of method of the magnetic carbon material Adsorption heavy metal ions in wastewater of nitrating | |
| CN104001471A (en) | Preparation method of silicon dioxide immobilized hydroxyapatite material | |
| CN105692853A (en) | Method for removing arsenic in water by means of nano hematite | |
| CN103406092A (en) | Preparation method of amino-functionalization mesoporous gamma-Al2O3 absorbent | |
| CN102019165A (en) | Composite metal oxide absorbent for arsenic removal and preparation method of the same | |
| Ren et al. | Extraction and preparation of metal organic frameworks from secondary aluminum ash for removal mechanism study of fluoride in wastewater | |
| CN105709684A (en) | Iron and manganese composite oxide arsenic removing material as well as preparation method and application method thereof | |
| CN101857282A (en) | Method for selectively absorbing and separating thiocyanates and thiosulfates in water solution | |
| CN104148004B (en) | A kind of magnetic fluorine ion absorber and preparation method thereof | |
| CN103272563B (en) | A kind of preparation method of aluminum hydroxide film | |
| CN104689792A (en) | Mercury ion adsorbent for mercury-containing wastewater and preparation method of mercury ion adsorbent | |
| CN104998607A (en) | Chromium adsorbent and application thereof | |
| CN111268758A (en) | Treatment method of phenol wastewater | |
| CN110423888A (en) | From the adsorption method for separating simultaneously Vanadium Concentrationin chromium after precipitation in liquid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150624 |
|
| RJ01 | Rejection of invention patent application after publication |