CN106277267A - Ferrum element is the application of arsenic in removing water - Google Patents
Ferrum element is the application of arsenic in removing water Download PDFInfo
- Publication number
- CN106277267A CN106277267A CN201610876924.7A CN201610876924A CN106277267A CN 106277267 A CN106277267 A CN 106277267A CN 201610876924 A CN201610876924 A CN 201610876924A CN 106277267 A CN106277267 A CN 106277267A
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- Prior art keywords
- water
- ferrum element
- ion
- arsenic
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- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention open ferrum element application of arsenic in removing water, puts into ferrum element and persulfate in the water containing As ion, removes As ions whole in water in 20 minutes；Wherein the PH of water is 7～9, and the ratio of the amount of the material of persulfate and ferrum element is 1:(20～25).The present invention the most in the solution or all can remove the As ion in water in the water body of nature under fast speed, can remove the As ion of 90% in water the soonest, and the As ion remaval rate reached in 5 minutes is 100% in 0.5 minute.Not only faster can remove down As ion, and ferrum element abundance, price is relatively low, is eco-friendly metal, does not pollutes the environment.
Description
Technical field
The invention belongs to technical field of water pollution control, relating in particular to a kind of ferrum element should remove arsenic in water
With.
Background technology
Arsenic in water body mainly exists with arsenate As (V) and two kinds of valence states of arsenite As (III), the change of major part arsenic
Compound has toxicity, and water body causes serious pollution.Arsenic distributional pattern in water body is affected by water body Eh or pH, due to
As (III) is usual with neutral molecule H in water body3AsO3Presented in, the clearance of As (III) is far below by conventional method
Removal to As (V), and the toxicity of As (III) is also much stronger than As (V), so generally first As (III) being oxidized to As (V) again
Removed by additive method.The method of conventional treatment arsenic has a bioanalysis, absorption method, ion exchange and coprecipitation etc., but,
But there is the shortcoming polluting environment in above method.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide the application of arsenic in removing water of a kind of ferrum element.
It is an object of the invention to be achieved by following technical proposals.
A kind of ferrum element is the application of arsenic in removing water, puts into ferrum element and persulfate containing As (V) ion
In water, it is stirred until homogeneous, in 20 minutes, removes As (V) ions whole in water；Wherein, the PH of described water is 7～9, described
The ratio of the amount of the material of persulfate and ferrum element is 1:(20～25).
In technique scheme, the ratio of the amount of the material of described persulfate and ferrum element is 1:(22～24).
In technique scheme, described ferrum element is iron powder.
In technique scheme, described ferrum element is iron powder and ferrous salt, the amount of the material of described iron powder and ferrous salt
Ratio be (22～23): (0.5～0.8).
In technique scheme, described persulfate is Na2S2O8Or K2S2O8。
In technique scheme, described ferrous salt is (NH4)2Fe(SO4)2·6H2O。
In technique scheme, the removal used time is 5 20min.
Compared to prior art, the present invention the most still all can be in fast speed in the water body of nature
As (V) ion in lower removal water, can remove As (V) ion of in water about 90% the soonest in 0.5 minute, and at 5 minutes
As (V) the ion remaval rate inside reached is 100%.Not only can remove down As (V) ion, and ferrum element source is rich
Richness, price is relatively low, is eco-friendly metal, does not pollutes the environment.
Accompanying drawing explanation
Fig. 1 is the application of the present invention clearance to As in solution (V) ion.
Detailed description of the invention
In the detailed description of the invention of the present invention, ferrous salt is (NH4)2Fe(SO4)2·6H2O, persulfate is persulfuric acid
Sodium, the medicine used and the relevant information of instrument are as follows:
Experiment reagent
Experimental apparatus
| Instrument title | Model | Manufacturer |
| Electronic balance (for the weighing of following solid medicine) | AL 204 | Shanghai Yi Zhun instrument company |
| Water-bath constant temperature oscillator | XMTB | Tianjin medium ring experimental electric furnace is limited |
| PH meter | Thunder magnetic-360 | Shanghai Lei Ci instrument plant |
| ICP-MS | ELAN9000 | U.S. PE |
| ICP-OES | Optima8300 | The U.S. |
| Syringe | 5mL | Jiang Xifeng faces medical equipment company |
With embodiment, ferrum element application of arsenic in removing water of the present invention is described in detail below in conjunction with the accompanying drawings.
Can reach for checking technical scheme and remove the effect of As (V) ion in water, set up an evaluation As (V) from
The simulated environment of sub-clearance.
The pH value first passing through pH meter detection 1g/L As (V) standard solution is 1.17, is diluted to 20mg/L, and adjusts
Joint pH value, to neutral (PH=7), in each polyethylene bottle in 7 100mL polyethylene bottles, is separately added into 100mL20mg/L
As (V) solion, obtain 7 aqueous solutions containing As (V) ion and (be described in summary of the invention containing As (V) ion
Water) polyethylene bottle, be numbered No. 1 polyethylene bottle, No. 2 polyethylene bottles, No. 3 polyethylene bottles, No. 4 polyethylene bottles ... No. 7
Polyethylene bottle, standby.
Embodiment 1 (contrast)
By 0.4mmol Na2S2O8Put in No. 1 polyethylene bottle of the aqueous solution containing As (V) ion.
Embodiment 2
By 0.4mmol Na2S2O8Put in No. 2 polyethylene bottles of the aqueous solution containing As (V) ion with iron powder.Described
Na2S2O8It is 1:21 with the ratio of the amount of the material of iron powder.
Embodiment 3
By 0.4mmol Na2S2O8Put in No. 3 polyethylene bottles of the aqueous solution containing As (V) ion with iron powder.Described
Na2S2O8It is 1:22.25 with the ratio of the amount of the material of iron powder.
Embodiment 4
By 0.4mmol Na2S2O8Put in No. 4 polyethylene bottles of the aqueous solution containing As (V) ion with iron powder.Described
Na2S2O8It is 1:24 with the ratio of the amount of the material of iron powder.
Embodiment 5
By ferrum element and 0.4mmol Na2S2O8Put in No. 5 polyethylene bottles of the aqueous solution containing As (V) ion.Institute
Stating ferrum element is iron powder and ferrous salt, described Na2S2O8It is 1:22.875 with the ratio of the amount of the material of described ferrum element, described ferrum
The ratio of the amount of the material of powder and ferrous salt is 22.25:0.625.
Embodiment 6
By ferrum element and 0.4mmol Na2S2O8Put in No. 6 polyethylene bottles of the aqueous solution containing As (V) ion.Institute
Stating ferrum element is iron powder and ferrous salt, described Na2S2O8Be 1:23 with the ratio of the amount of the material of described ferrum element, described iron powder and
The ratio of the amount of the material of ferrous salt is 22.5:0.7.
Embodiment 7
By ferrum element and 0.4mmol Na2S2O8Put in No. 7 polyethylene bottles of the aqueous solution containing As (V) ion.Institute
Stating ferrum element is iron powder and ferrous salt, described Na2S2O8Be 1:24 with the ratio of the amount of the material of described ferrum element, described iron powder and
The ratio of the amount of the material of ferrous salt is 22.7:0.55.
Sampling method: above-mentioned 7 embodiments are separately added into above-mentioned 7 different polyethylene bottles and carry out water-bath, at 20 DEG C
Vibrate (160 turns/min) on lower water-bath constant temperature oscillator, be 0.5min, 1min, 2min, 5min, 10min in the response time,
When 20min, 30min, 60min, 90min, 120min, with syringe sampling (through 0.42 μm syringe needle membrane filtration), wherein, often
After sub-sampling, and utilize the nitric acid of 3% (volumetric concentration) to polyethylene bottle constant volume (being settled to 100mL), will gather after each constant volume
Ethylene bottle is reentered on constant temperature water bath oscillator continuation vibration (160 turns/min).Utilize ICP-MS and ICP-OES test sample respectively
As (V) in product.
Wherein, As (V) the ion remaval rate of embodiment 1,3 and 5 is as it is shown in figure 1, at the Na of embodiment 12S2O8With As (V)
Reaction in, the clearance of As (V) is about 10%, and NaS is described2O8The lowest to As (V) removal effect.Embodiment 5
NaS2O8, that iron powder and ferrous salt remove the effect of As (V) is best, removes As (V) ion of about 90% in water in 0.5 minute,
As (V) the ion remaval rate reached in 5 minutes is 100%；Next to that NaS2O8With iron powder effect, remove in water in 20min
As(V).Through it is demonstrated experimentally that embodiment 2,4,6 and 7 all can reach the performance close with embodiment 3 and 5.
In addition, ICP-MS and ICP-OES test is utilized to remove after As (V) ion the concentration of iron ion, warp in solution
Cross test, embodiment 5 only contain only a small amount of iron ion, it follows that with trivalent iron salt and persulfate remove As (V) from
After son, too much foreign ion will not be introduced；Using iron powder to be removed, in solution, iron concentration also can obtain effectively
Control.
Above the present invention is done exemplary description, it should explanation, in the situation of the core without departing from the present invention
Under, any simple deformation, amendment or other those skilled in the art can not spend the equivalent of creative work equal
Fall into protection scope of the present invention.
Claims (8)
1. ferrum element application of arsenic in removing water, it is characterised in that ferrum element and persulfate are put into containing As
(V) in the water of ion, it is stirred until homogeneous, in 20 minutes, removes As (V) ions whole in water；Wherein, the PH of described water is 7
～9, the ratio of the amount of the material of described persulfate and ferrum element is 1:(20～25).
Ferrum element the most according to claim 1 is the application of arsenic in removing water, it is characterised in that described persulfate and ferrum
The ratio of the amount of the material of element is 1:(22～24).
3. according to the application of arsenic in removing water of the ferrum element described in claims 1 or 2, it is characterised in that described ferrum element
For iron powder.
4. according to the application of arsenic in removing water of the ferrum element described in claims 1 or 2, it is characterised in that described ferrum element
For iron powder and ferrous salt, the ratio of the amount of the material of described iron powder and ferrous salt is (22～23): (0.5～0.8).
Ferrum element the most according to claim 1 is the application of arsenic in removing water, it is characterised in that described persulfate is
Na2S2O8Or K2S2O8。
Ferrum element the most according to claim 4 is the application of arsenic in removing water, it is characterised in that described ferrous salt is
(NH4)2Fe(SO4)2·6H2O。
Ferrum element the most according to claim 1 is the application of arsenic in removing water, it is characterised in that the removal used time is 5
20min。
Ferrum element the most according to claim 1 is the application of arsenic in removing water, it is characterised in that the soonest can be at 0.5 minute
As (V) ion of 90% in interior removal water, and As (V) the ion remaval rate reached in 5 minutes is 100%.
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| CN201610876924.7A CN106277267A (en) | 2016-09-30 | 2016-09-30 | Ferrum element is the application of arsenic in removing water |
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| CN201610876924.7A CN106277267A (en) | 2016-09-30 | 2016-09-30 | Ferrum element is the application of arsenic in removing water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010704A (en) * | 2017-05-02 | 2017-08-04 | 中南大学 | A kind of method for handling the waste water containing trivalent arsenic |
| CN110745930A (en) * | 2019-09-23 | 2020-02-04 | 昆明理工大学 | Magnetic Fe3O4Method for treating arsenic in nonferrous smelting waste acid by cooperating with calcium oxide |
| CN114835218A (en) * | 2022-05-06 | 2022-08-02 | 中南大学 | Method for enhancing removal of As (III) and/or As (V) based on coupling of ferrous iron or ferric ion with peroxymonosulfate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342410A (en) * | 2013-07-25 | 2013-10-09 | 中山大学 | Water treatment method for removing arsenic by strengthening zero-valent iron |
-
2016
- 2016-09-30 CN CN201610876924.7A patent/CN106277267A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342410A (en) * | 2013-07-25 | 2013-10-09 | 中山大学 | Water treatment method for removing arsenic by strengthening zero-valent iron |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107010704A (en) * | 2017-05-02 | 2017-08-04 | 中南大学 | A kind of method for handling the waste water containing trivalent arsenic |
| CN107010704B (en) * | 2017-05-02 | 2019-12-17 | 中南大学 | Method for treating wastewater containing trivalent arsenic |
| CN110745930A (en) * | 2019-09-23 | 2020-02-04 | 昆明理工大学 | Magnetic Fe3O4Method for treating arsenic in nonferrous smelting waste acid by cooperating with calcium oxide |
| CN114835218A (en) * | 2022-05-06 | 2022-08-02 | 中南大学 | Method for enhancing removal of As (III) and/or As (V) based on coupling of ferrous iron or ferric ion with peroxymonosulfate |
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