CN103464091A - Modified bentonite load nanometer iron material and preparation method thereof - Google Patents
Modified bentonite load nanometer iron material and preparation method thereof Download PDFInfo
- Publication number
- CN103464091A CN103464091A CN2013104628797A CN201310462879A CN103464091A CN 103464091 A CN103464091 A CN 103464091A CN 2013104628797 A CN2013104628797 A CN 2013104628797A CN 201310462879 A CN201310462879 A CN 201310462879A CN 103464091 A CN103464091 A CN 103464091A
- Authority
- CN
- China
- Prior art keywords
- loaded nano
- nano iron
- mud loaded
- mixed liquor
- bentonite
- 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
Images
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a modified bentonite load nanometer iron material and a preparation method thereof. According to the technical scheme, the preparation method includes the steps of stirring bentonite and bivalent iron salt solutions to prepare the mixed liquor of the bentonite and the bivalent iron salt solutions, wherein the mass ratio between an iron element and the bentonite is 1: (1-2), then dropwise adding reducing agent solutions to the mixed liquor of the bentonite and the bivalent iron salt solutions and stirring to prepare mixed liquor containing bentonite load nanometer iron, and adding alkyl quaternary ammonium salt solutions into the mixed liquor containing the bentonite load nanometer iron and stirring, wherein the volume ratio between the mixed liquor containing the bentonite load nanometer iron and modifying agent solutions is 1: (0.15-0.20), and the steps are all carried out in a nitrogen environment; then carrying out suction filtration, drying and grinding the obtained solid in a vacuum environment to obtain the modified bentonite load nanometer iron material. The modified bentonite load nanometer iron material prepared by the preparation method has strong reducing capacity and adsorption capacity, and is suitable for removing heavy metal chromium (VI) and heavy metal arsenic (V), wherein the heavy metal chromium (VI) and the heavy metal arsenic (V) exist in water in an anionic form.
Description
Technical field
The present invention relates to a kind of sewage-treating agent technical field.Relate in particular to a kind of modified alta-mud loaded nano iron material and preparation method thereof.
Background technology
Heavy metal chromium and arsenic, especially Cr VI and pentavalent arsenic mainly exist with anionic form in surface water and groundwater, larger to harm.Processing method containing chromium, arsenic waste water mainly contains chemical precipitation method, ion-exchange and membrane separation process at present.Chemical precipitation method is mainly to add calcium hydroxide in waste water, but the calcium hydroxide dosage is too large, can produce a large amount of sludge containing heavy metals; The ion-exchange complex process, resin is easily aging; The membrane separation process high cost, fenestra easily stops up.Chromium, the arsenic found in high activity material removal waste water have received the water treatment field concern.
With Zero-valent Iron (Fe
0), especially nano zero valence iron (nZVI) is removed chromium and arsenic becomes a very active research field.Nano zero valence iron has higher reduction potential (E
θ=1.77V>>0.2V), by circulation, comprehensive electrochemical corrosion mechanism, can remove the Cr (VI) existed with the anion state, and Fe
0can progressively generate Fe
2+, Fe
3+, form ferrous hydroxide or ferric hydroxide colloid in water, to the reduzate Cr (OH) of As (V) and Cr (VI)
3the adsorption coprecipitation effect is arranged.But the nano zero-valence iron material still exists some problems to need to solve in actual applications, as wayward as the synthesis condition of nano zero valence iron, very easily reunite, air stability is poor and hydrophily is poor etc.
Shi etc. process containing Cr (VI) waste water (L. N. Shi as porous material loading zeroth order Nanoscale Iron with bentonite, X. Zhang, Z. L. Chen.Removal of chromium (VI) from wastewater using bentonite-supported nanoscale zero-valent iron[J] .Water Res. 2011,45:886-892; L. N. Shi, X. Zhang, Z. L. Chen. alta-mud loaded nano iron is removed [J] to Cr in waste water (VI). wate research, 2011,45:886-892), than zeroth order Nanoscale Iron clearance, increase.Although bentonitic Coulomb repulsion and the interaction energy such as sterically hindered make the iron particle be difficult for assembling, also be difficult for oxidized, but bentonite surface band negative electricity, the Nanoscale Iron hydrophobicity is stronger, to the adsorption capacity of anion chromate and arsenate still a little less than, removal effect is not ideal enough.
American scholar Li, the use Zero-valent Iron such as Z are mixed mutually with natural zeolite, and then carry out modification (Z. Li with softex kw, J. H. Kirk, P. Zhang, et al.Chromate transport though columns packed with surfactant-modified zeolite/zero valent iron pellets[J] .Chemosphere. 2007,68:1861-1866; Z. Li, J. H. Kirk, P. Zhang, the migration [J] of et al. chromate in surface active agent modification zeolites/Zero-valent Iron packed column. chemistry circle, 2007,68:1861-1866), changed the surface characteristic of Zero-valent Iron and zeolite, the modified zeolite of making accordingly/Zero-valent Iron packed column has the Reduce and adsorption effect to chromate, but the utilization rate of Zero-valent Iron is not high, under higher flow velocity and concentration of chromate condition, need to increase packed column length.
Summary of the invention
The present invention is intended to overcome the prior art defect, and purpose is to provide a kind ofly has modified alta-mud loaded nano iron material of good removal effect and preparation method thereof to chromium (VI) and the arsenic (V) existed with anionic form in surface water and groundwater.
For achieving the above object, the preparation process of the technical solution used in the present invention is:
Step 1, first the divalent iron salt solution of bentonite and 0.05 ~ 0.6 mol/L is stirred to 30 ~ 40 min, mixing speed is 250 ~ 300 r/min, makes the mixed liquor of bentonite and divalent iron salt, and wherein ferro element and bentonitic mass ratio are 1 ︰ (1 ~ 2).
Step 2, continuing, under the condition that step 1 stirs, in the mixed liquor of bentonite and divalent iron salt, to drip reductant solution,
The volume ratio of divalent iron salt solution and reductant solution is 1 ︰ (0.95 ~ 1.05); Reductant solution dropwises, and continues to stir 20 ~ 40 min, makes the mixed liquor containing alta-mud loaded nano iron.
Described reductant solution is that mass fraction is 0.2 wt% sodium hydroxide solution and reducing agent are formulated, and wherein the mol ratio of reducing agent and divalent iron salt is (1/3 ~ 3) ︰ 1.
Step 3, continuing under the condition that step 2 stirs, mixing speed is down to 200 ~ 250 r/min by 250 ~ 300 r/min, adding modifier solution containing in the mixed liquor of alta-mud loaded nano iron, is 1 ︰ (0.15 ~ 0.20) containing the mixed liquor of alta-mud loaded nano iron and the volume ratio of modifier solution; Modifier solution adds complete, continues to stir 20 ~ 40 min, obtains modified alta-mud loaded nano iron mixed liquor.
Distilled water and alkyl quaternary ammonium salts that described modifier solution is 50 ~ 80 ℃ are formulated, and in every liter of distilled water, the addition of alkyl quaternary ammonium salts is 12 ~ 60 g.
Step 1 is all carried out to step 3 in nitrogen atmosphere.
Step 4, the modified alta-mud loaded nano iron mixed liquor suction filtration first step 3 made, again by absolute ethanol washing 1 ~ 2 time of the solid after suction filtration, then with distilled water washing 2 ~ 3 times, finally the solid after washing is placed in to vacuum desiccator or dry 12 h of vacuum drying chamber, be ground to powdery, obtain the modified alta-mud loaded nano iron material.
The speed that described reductant solution drips is 100 ~ 120 per minute.
Described divalent iron salt is a kind of in frerrous chloride, ferrous sulfate and ferrous nitrate.
Described reducing agent is a kind of in potassium borohydride, zinc borohydride and sodium borohydride.
The purity of described nitrogen is 99.999 vol%.
Owing to adopting technique scheme, the present invention compared with prior art has following good effect:
The present invention adopts quaternary ammonium alkyl salt pair alta-mud loaded nano iron to carry out modification, nano iron particles not only is distributed in the bentonite surface, also be present on the alkyl quaternary ammonium salts carbochain, for the modified alta-mud loaded nano iron material provides the avtive spot of more removal pollutant chromium (VI) and arsenic (V).
The present invention adopts quaternary ammonium alkyl salt pair alta-mud loaded nano iron to carry out modification, make the bentonite surface distribute than the alkyl quaternary ammonium salts that is backbone of horn of plenty with interlayer, the modified alta-mud loaded iron material made is stronger than the alta-mud loaded nano iron surface electropositive climacteric that there is no modification, meso-position radius is less, specific area is larger, the modified alta-mud loaded nano iron material more disperses, and anionic pollutant chromate and arsenate are had to stronger adsorption capacity.
Therefore, the prepared modified alta-mud loaded nano iron material of the present invention has stronger reducing power and adsorption capacity, is applicable to removing heavy metal chromium (VI) and the arsenic (V) existed with anionic form in water.
The accompanying drawing explanation
The scanning electron microscope (SEM) photograph that Fig. 1 is unmodified alta-mud loaded nano iron;
The scanning electron microscope (SEM) photograph that Fig. 2 is a kind of modified alta-mud loaded nano iron material of preparing of the present invention.
the specific embodiment:
Below in conjunction with the specific embodiment and accompanying drawing, the invention will be further described, not to the restriction of its protection domain:
For avoiding repetition, existing by this specific embodiment, related technical parameter unification is described below, and in embodiment, repeats no more:
Step 1 is all carried out to step 3 in nitrogen atmosphere.
The speed that described reductant solution drips is 100 ~ 120 per minute.
The purity of described nitrogen is 99.999 vol%.
embodiment 1
A kind of modified alta-mud loaded nano iron material and preparation method thereof.The concrete steps of its preparation method are:
Step 1, first the divalent iron salt solution of bentonite and 0.05 ~ 0.1 mol/L is stirred to 30 ~ 40 min, mixing speed is 250 ~ 300 r/min, makes the mixed liquor of bentonite and divalent iron salt, and wherein ferro element and bentonitic mass ratio are 1 ︰ (1 ~ 2).
Step 2, continuing, under the condition that step 1 stirs, in the mixed liquor of bentonite and divalent iron salt, to drip reductant solution,
The volume ratio of divalent iron salt solution and reductant solution is 1 ︰ (0.95 ~ 1.05); Reductant solution dropwises, and continues to stir 20 ~ 40 min, makes the mixed liquor containing alta-mud loaded nano iron.
Described reductant solution is that mass fraction is 0.2 wt% sodium hydroxide solution and reducing agent are formulated, and wherein the mol ratio of reducing agent and divalent iron salt is (1/3 ~ 1) ︰ 1.
Step 3, continuing under the condition that step 2 stirs, mixing speed is down to 200 ~ 250 r/min by 250 ~ 300 r/min, adding modifier solution containing in the mixed liquor of alta-mud loaded nano iron, is 1 ︰ (0.15 ~ 0.18) containing the mixed liquor of alta-mud loaded nano iron and the volume ratio of modifier solution; Modifier solution adds complete, continues to stir 20 ~ 40 min, obtains modified alta-mud loaded nano iron mixed liquor.
Distilled water and alkyl quaternary ammonium salts that described modifier solution is 50 ~ 80 ℃ are formulated, and in every liter of distilled water, the addition of alkyl quaternary ammonium salts is 12 ~ 30 g.
Step 4, the modified alta-mud loaded nano iron mixed liquor suction filtration first step 3 made, again by absolute ethanol washing 1 ~ 2 time of the solid after suction filtration, then with distilled water washing 2 ~ 3 times, finally the solid after washing is placed in to vacuum desiccator or dry 12 h of vacuum drying chamber, be ground to powdery, obtain the modified alta-mud loaded nano iron material.
The described divalent iron salt of the present embodiment is frerrous chloride, and described reducing agent is potassium borohydride.
The modified alta-mud loaded nano iron material prepared with this example is removed the heavy metal chromium (VI) in the waste water existed with the chromate form that concentration is 20 mg/L, modified alta-mud loaded nano iron material dosage in every liter of waste water is 1 g, mixing speed is 250 r/min, room temperature, the pH of waste water is 5.8 ~ 6.5, and be 2 h the time of contact of waste water and modified alta-mud loaded nano iron.With calculating, the clearance of chromium in described waste water (VI) is 84.1% after testing.
embodiment 2
A kind of modified alta-mud loaded nano iron material and preparation method thereof.
The present embodiment is that ferrous nitrate and reducing agent are zinc borohydride except divalent iron salt, and all the other are with embodiment 1.
The modified alta-mud loaded nano iron material prepared with this example is removed the heavy metal arsenic (V) in the waste water existed with anionic form that concentration is 5 mg/L, modified alta-mud loaded nano iron material dosage in every liter of waste water is 1 g, mixing speed is 250 r/min, room temperature, the pH of waste water is 6.0 ~ 6.2, and be 2 h the time of contact of waste water and modified alta-mud loaded nano iron.With calculating, the clearance of described arsenic in waste water (V) is 98.6% after testing.
embodiment 3
A kind of modified alta-mud loaded nano iron material and preparation method thereof.The concrete steps of its preparation method are:
Step 1, first the divalent iron salt solution of bentonite and 0.1 ~ 0.3mol/L is stirred to 30 ~ 40 min, mixing speed is 250 ~ 300 r/min, makes the mixed liquor of bentonite and divalent iron salt, and wherein ferro element and bentonitic mass ratio are 1 ︰ (1 ~ 2).
Step 2, continuing, under the condition that step 1 stirs, in the mixed liquor of bentonite and divalent iron salt, to drip reductant solution,
The volume ratio of divalent iron salt solution and reductant solution is 1 ︰ (0.95 ~ 1.05); Reductant solution dropwises, and continues to stir 20 ~ 40 min, makes the mixed liquor containing alta-mud loaded nano iron.
Described reductant solution is that mass fraction is 0.2 wt% sodium hydroxide solution and reducing agent are formulated, and wherein the mol ratio of reducing agent and divalent iron salt is (1 ~ 2) ︰ 1.
Step 3, mixing speed is down to 200 ~ 250 r/min by 250 ~ 300 r/min, adding modifier solution containing in the mixed liquor of alta-mud loaded nano iron, is 1 ︰ (0.16 ~ 0.19) containing the mixed liquor of alta-mud loaded nano iron and the volume ratio of modifier solution; Modifier solution adds complete, continues to stir 20 ~ 40 min, obtains modified alta-mud loaded nano iron mixed liquor.
Distilled water and alkyl quaternary ammonium salts that described modifier solution is 50 ~ 80 ℃ are formulated, and in every liter of distilled water, the addition of alkyl quaternary ammonium salts is 30 ~ 45 g.
Step 4, the modified alta-mud loaded nano iron mixed liquor suction filtration first step 3 made, again by absolute ethanol washing 1 ~ 2 time of the solid after suction filtration, then with distilled water washing 2 ~ 3 times, finally the solid after washing is placed in to vacuum desiccator or dry 12 h of vacuum drying chamber, be ground to powdery, obtain the modified alta-mud loaded nano iron material.
The described divalent iron salt of the present embodiment is ferrous sulfate, and described reducing agent is sodium borohydride.
The modified alta-mud loaded nano iron material prepared with this example is removed the heavy metal chromium (VI) in the waste water existed with anionic form that concentration is 20 mg/L, modified alta-mud loaded nano iron material dosage in every liter of waste water is 1 g, mixing speed is 250 r/min, room temperature, the pH of waste water is 5.8 ~ 6.5, and be 2 h the time of contact of waste water and modified alta-mud loaded nano iron.With calculating, the clearance of chromium in described waste water (VI) is 94.5% after testing.
embodiment 4
A kind of modified alta-mud loaded nano iron material and preparation method thereof.
The present embodiment is that frerrous chloride and reducing agent are potassium borohydride except divalent iron salt, and all the other are with embodiment 3.
The modified alta-mud loaded nano iron material prepared with this example is removed the heavy metal arsenic (V) in the waste water existed with the arsenate form that concentration is 30 mg/L, modified alta-mud loaded nano iron material dosage in every liter of waste water is 1.0 g, mixing speed is 250 r/min, room temperature, the pH of waste water is 6.2, and be 2 h the time of contact of waste water and modified alta-mud loaded nano iron.With calculating, the clearance of described waste water arsenic (V) is 86.3% after testing.
embodiment 5
A kind of modified alta-mud loaded nano iron material and preparation method thereof.The concrete steps of its preparation method are:
Step 1, first the divalent iron salt solution of bentonite and 0.3 ~ 0.6 mol/L is stirred to 30 ~ 40min, mixing speed is 250 ~ 300 r/min, makes the mixed liquor of bentonite and divalent iron salt, and wherein ferro element and bentonitic mass ratio are 1 ︰ (1 ~ 2).
Step 2, continuing, under the condition that step 1 stirs, in the mixed liquor of bentonite and divalent iron salt, to drip reductant solution,
The volume ratio of divalent iron salt solution and reductant solution is 1 ︰ (0.95 ~ 1.05); Reductant solution dropwises, and continues to stir 20 ~ 40 min, makes the mixed liquor containing alta-mud loaded nano iron.
Described reductant solution is that mass fraction is 0.2 wt% sodium hydroxide solution and reducing agent are formulated, and wherein the mol ratio of reducing agent and divalent iron salt is (2 ~ 3) ︰ 1.
Step 3, continuing under the condition that step 2 stirs, mixing speed is down to 200 ~ 250 r/min by 250 ~ 300 r/min, adding modifier solution containing in the mixed liquor of alta-mud loaded nano iron, is 1 ︰ (0.17 ~ 0.20) containing the mixed liquor of alta-mud loaded nano iron and the volume ratio of modifier solution; Modifier solution adds complete, continues to stir 20 ~ 40 min, obtains modified alta-mud loaded nano iron mixed liquor.
Distilled water and alkyl quaternary ammonium salts that described modifier solution is 50 ~ 80 ℃ are formulated, and in every liter of distilled water, the addition of alkyl quaternary ammonium salts is 45 ~ 60 g.
Step 4, the modified alta-mud loaded nano iron mixed liquor suction filtration first step 3 made, again by absolute ethanol washing 1 ~ 2 time of the solid after suction filtration, then with distilled water washing 2 ~ 3 times, finally the solid after washing is placed in to vacuum desiccator or dry 12 h of vacuum drying chamber, be ground to powdery, obtain the modified alta-mud loaded nano iron material.
Described divalent iron salt is ferrous nitrate, and described reducing agent is zinc borohydride.
The modified alta-mud loaded nano iron material prepared with this example is removed the heavy metal arsenic (V) in the waste water existed with the arsenate form that concentration is 20 mg/L, modified alta-mud loaded nano iron material dosage in every liter of waste water is 0.8 g, mixing speed is 250 r/min, room temperature, the pH of waste water is 5.8 ~ 6.5, and be 2 h the time of contact of waste water and modified alta-mud loaded nano iron.With calculating, the clearance of described waste water arsenic (V) is 97.9% after testing.
embodiment 6
A kind of modified alta-mud loaded nano iron material and preparation method thereof.
The present embodiment is that ferrous sulfate and reducing agent are sodium borohydride except divalent iron salt, and all the other are with embodiment 5.
The modified alta-mud loaded nano iron material prepared with this example is removed the heavy metal chromium (VI) in the waste water existed with the chromate form that concentration is 20 mg/L, modified alta-mud loaded nano iron material dosage in every liter of waste water is 0.9 g, mixing speed is 250 r/min, room temperature, the pH of waste water is 5.9, and be 1.5 h the time of contact of waste water and modified alta-mud loaded nano iron.With calculating, the clearance of chromium in described waste water (VI) is 88.7% after testing.
This specific embodiment adopts quaternary ammonium alkyl salt pair alta-mud loaded nano iron to carry out modification, nano iron particles not only is distributed in the bentonite surface, also be present on the alkyl quaternary ammonium salts carbochain, for the modified alta-mud loaded nano iron material provides the avtive spot of more removal pollutant chromium (VI) and arsenic (V).Fig. 1 is the scanning electron microscope (SEM) photograph that there is no the alta-mud loaded nano iron of modification, as can be seen from the figure, through the alta-mud loaded nano iron particle of alkyl quaternary ammonium salts modification, does not comparatively reunite, and inner space is comparatively crowded.The scanning electron microscope (SEM) photograph that Fig. 2 is the prepared modified alta-mud loaded Zero-valent Iron of the present embodiment 2, as can be seen from Figure 2, the bentonite surface distributed the abundant alkyl quaternary ammonium salts that is backbone, nano iron particles not only is distributed in the bentonite surface, also be present on the alkyl quaternary ammonium salts long-chain, stronger to heavy metal chromium (VI) reducing power, corrosion has strengthened the reduzate Cr (OH) to As (V) and Cr (VI) after forming ferrous hydroxide or iron hydroxide
3the adsorption coprecipitation effect.
This specific embodiment adopts quaternary ammonium alkyl salt pair alta-mud loaded nano iron to carry out modification, the modified alta-mud loaded iron material made is stronger than the alta-mud loaded nano iron surface electropositive for modification, meso-position radius is less, specific area is larger, and anionic pollutant chromium and arsenic are had to stronger adsorption capacity.Table 1 is 4 kinds of different quaternary ammonium alkyl salinity in embodiment 2 prepared modified alta-mud loaded nano iron material and the contrast that there is no Zeta potential value, meso-position radius (d (50)) and the specific area of the alta-mud loaded nano iron of modification.As can be seen from Table 1, the Zeta potential value of modified alta-mud loaded nano iron material is 0.65mV ~ 1.93 mV, and meso-position radius is 5.21 ~ 9.49 um, and specific area is 1.2 ~ 2.01 m
2/ g, there is no the alta-mud loaded nano iron Zeta potential value of modification is 0.55 mV, and meso-position radius is 11.65 um, and specific area is 1.18 m
2/ g, illustrate that modified alta-mud loaded nano iron surface electropositive is stronger, and particle is less, and heavy metal contaminants chromium (VI) and arsenic (V) are had to stronger adsorption capacity.
4 kinds of goods in table 1 embodiment 3 and the performance comparison of unmodified alta-mud loaded nano iron
Therefore, the prepared modified alta-mud loaded nano iron material of this specific embodiment has stronger reducing power and adsorption capacity, is applicable to removing heavy metal chromium (VI) and the arsenic (V) existed with anionic form in water.
Claims (6)
1. the preparation method of a modified alta-mud loaded nano iron material is characterized in that described preparation method's concrete steps are:
Step 1, first the divalent iron salt solution of bentonite and 0.05 ~ 0.6 mol/L is stirred to 30 ~ 40 min, mixing speed is 250 ~ 300 r/min, makes the mixed liquor of bentonite and divalent iron salt, and wherein ferro element and bentonitic mass ratio are 1 ︰ (1 ~ 2);
Step 2, continuing, under the condition that step 1 stirs, in the mixed liquor of bentonite and divalent iron salt, to drip reductant solution,
The volume ratio of divalent iron salt solution and reductant solution is 1 ︰ (0.95 ~ 1.05); Reductant solution dropwises, and continues to stir 20 ~ 40 min, makes the mixed liquor containing alta-mud loaded nano iron;
Described reductant solution is that mass fraction is 0.2 wt% sodium hydroxide solution and reducing agent are formulated, and wherein the mol ratio of reducing agent and divalent iron salt is (1/3 ~ 3) ︰ 1;
Step 3, continuing under the condition that step 2 stirs, mixing speed is down to 200 ~ 250 r/min by 250 ~ 300 r/min, adding modifier solution containing in the mixed liquor of alta-mud loaded nano iron, is 1 ︰ (0.15 ~ 0.20) containing the mixed liquor of alta-mud loaded nano iron and the volume ratio of modifier solution; Modifier solution adds complete, continues to stir 20 ~ 40 min, obtains modified alta-mud loaded nano iron mixed liquor;
Distilled water and alkyl quaternary ammonium salts that described modifier solution is 50 ~ 80 ℃ are formulated, and in every liter of distilled water, the addition of alkyl quaternary ammonium salts is 12 ~ 60 g;
Step 1 is all carried out to step 3 in nitrogen atmosphere; Step 4, the modified alta-mud loaded nano iron mixed liquor suction filtration first step 3 made, again by absolute ethanol washing 1 ~ 2 time of the solid after suction filtration, then with distilled water washing 2 ~ 3 times, finally the solid after washing is placed in to vacuum desiccator or dry 12 h of vacuum drying chamber, be ground to powdery, obtain the modified alta-mud loaded nano iron material.
2. the preparation method of modified alta-mud loaded nano iron material according to claim 1, is characterized in that the speed that described reductant solution drips is 100 ~ 120 per minute.
3. the preparation method of modified alta-mud loaded nano iron material according to claim 1, is characterized in that described divalent iron salt is a kind of in frerrous chloride, ferrous sulfate and ferrous nitrate.
4. the preparation method of modified alta-mud loaded nano iron material according to claim 1, is characterized in that described reducing agent is a kind of in potassium borohydride, zinc borohydride and sodium borohydride.
5. the preparation method of modified alta-mud loaded nano iron material according to claim 1, the purity that it is characterized in that described nitrogen is 99.999 vol %.
6. a modified alta-mud loaded nano iron material, is characterized in that described modified alta-mud loaded nano iron material is the prepared modified alta-mud loaded nano iron material of preparation method according to the described modified alta-mud loaded nano iron material of any one in claim 1 ~ 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104628797A CN103464091A (en) | 2013-10-08 | 2013-10-08 | Modified bentonite load nanometer iron material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104628797A CN103464091A (en) | 2013-10-08 | 2013-10-08 | Modified bentonite load nanometer iron material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103464091A true CN103464091A (en) | 2013-12-25 |
Family
ID=49789263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104628797A Pending CN103464091A (en) | 2013-10-08 | 2013-10-08 | Modified bentonite load nanometer iron material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103464091A (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880143A (en) * | 2014-04-09 | 2014-06-25 | 北华源（北京）科技有限公司 | Process for preparing composite materials for removing arsenic from red mud |
| CN105884004A (en) * | 2016-04-11 | 2016-08-24 | 江苏天晟环境科技有限公司 | Preparation of nanoscale zero-valent iron particles and application of nanoscale zero-valent iron particles in removal of chromium in water |
| CN106076249A (en) * | 2016-06-13 | 2016-11-09 | 环境保护部南京环境科学研究所 | A kind of modified alta-mud prepares the method for heavy metal particles adsorbent |
| CN106390927A (en) * | 2016-09-09 | 2017-02-15 | 安徽工业大学 | Preparation method of bio-char composite adsorbing material for removing phosphates in surface water |
| CN106669628A (en) * | 2016-12-22 | 2017-05-17 | 芜湖市鹏磊新材料有限公司 | Nano iron-loaded bentonite adsorbent containing polyacrylamide for synergistically removing turbidity and preparation method thereof |
| CN106799204A (en) * | 2016-12-22 | 2017-06-06 | 芜湖市鹏磊新材料有限公司 | Big load Nanoscale Iron bentone adsorbent of a kind of contact area and preparation method thereof |
| CN106807326A (en) * | 2016-12-22 | 2017-06-09 | 芜湖市鹏磊新材料有限公司 | A kind of load Nanoscale Iron bentone adsorbent of efficient removal Cr VI and preparation method thereof |
| CN106807327A (en) * | 2016-12-22 | 2017-06-09 | 芜湖市鹏磊新材料有限公司 | A kind of load Nanoscale Iron bentone adsorbent sterilized for metallurgical briquetting zinc ion and preparation method thereof |
| CN106861654A (en) * | 2017-03-07 | 2017-06-20 | 辽宁工程技术大学 | The immobilization particle and its preparation and application of a kind of same for treating acidic mine wastewater |
| CN107032474A (en) * | 2017-06-06 | 2017-08-11 | 山东大学深圳研究院 | A kind of method of alta-mud load sulfide modifier nanometer iron composite material processing waste water containing chrome under magnetic fields |
| CN107243332A (en) * | 2016-12-22 | 2017-10-13 | 芜湖市鹏磊新材料有限公司 | A kind of bentone adsorbent for loading kayexalate modified Nano iron and preparation method thereof |
| CN108097235A (en) * | 2017-11-27 | 2018-06-01 | 南京工业大学 | A kind of preparation method of the compound denitrating catalyst of layer structure |
| CN108676347A (en) * | 2018-05-18 | 2018-10-19 | 许水仙 | A kind of preparation method of the special antistatic agent of polyurethane plastics |
| CN109513267A (en) * | 2018-12-14 | 2019-03-26 | 核工业理化工程研究院 | The preparation method and processing method of Spent Radioactive water treatment facilities, absorption filter element |
| CN109589690A (en) * | 2018-12-11 | 2019-04-09 | 核工业理化工程研究院 | The preparation method of the combined type absorption filter element of a variety of radionuclides can be handled |
| RU2689576C1 (en) * | 2018-06-25 | 2019-05-28 | Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт органической химии и технологии" (ФГУП "ГосНИИОХТ") | Method of purifying high-arsenic-containing waste water |
| CN110316855A (en) * | 2018-03-29 | 2019-10-11 | 宝山钢铁股份有限公司 | The processing method and system of Cr VI, total chromium and total zinc in cold rolling chromium zinc waste water are removed simultaneously |
| CN110372060A (en) * | 2019-07-03 | 2019-10-25 | 合山市春旭环保科技有限责任公司 | A kind of composite water treatment medicament and preparation method thereof for the spent acid containing heavy metal |
| CN111672460A (en) * | 2020-06-04 | 2020-09-18 | 济南大学 | Composite modification method of zeolite and application of zeolite in removing nitrate in water |
| CN113666661A (en) * | 2021-06-19 | 2021-11-19 | 贵州省鑫瀚蓝环保科技有限公司 | Cement hexavalent chromium reducing agent and preparation method thereof |
| CN114950344A (en) * | 2022-03-30 | 2022-08-30 | 湖南工业大学 | Adsorbing material and preparation method and application thereof |
| CN115041181A (en) * | 2022-07-27 | 2022-09-13 | 广西至善新材料科技有限公司 | Bentonite-loaded iron molybdate catalyst and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1895769A (en) * | 2006-06-06 | 2007-01-17 | 河北工业大学 | Bentonite for purifying water and its preparation |
| CN101757886A (en) * | 2010-02-09 | 2010-06-30 | 浙江林学院 | Production method of environment-friendly chitosan intercalation composite bentonite adsorbent |
-
2013
- 2013-10-08 CN CN2013104628797A patent/CN103464091A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1895769A (en) * | 2006-06-06 | 2007-01-17 | 河北工业大学 | Bentonite for purifying water and its preparation |
| CN101757886A (en) * | 2010-02-09 | 2010-06-30 | 浙江林学院 | Production method of environment-friendly chitosan intercalation composite bentonite adsorbent |
Non-Patent Citations (4)
| Title |
|---|
| LI-NA SHI ET AL.: "Removal of Chromium (VI) from wastewater using bentonite-supported nanoscale zero-valent iron", 《WATER RESERCH》 * |
| LI-NA SHI ET AL.: "Synthesis, characterization and kinetics of bentonite supported nZVI for the removal of Cr(VI) from aqueous solution", 《CHEMICAL ENGINEERING JOURNAL》 * |
| SHUZHEN LI ET AL.: "Synthesis and characterization of organo-montmorillonite supported iron nanoparticles", 《APPLIED CLAY SCIENCE》 * |
| 蓝磊等: "改性膨润土对废水中六价铬的吸附过程研究", 《环境污染与防治》 * |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880143A (en) * | 2014-04-09 | 2014-06-25 | 北华源（北京）科技有限公司 | Process for preparing composite materials for removing arsenic from red mud |
| CN103880143B (en) * | 2014-04-09 | 2016-01-06 | 北华源（北京）科技有限公司 | Red mud is utilized to prepare the technique of arsenic removal composite |
| CN105884004A (en) * | 2016-04-11 | 2016-08-24 | 江苏天晟环境科技有限公司 | Preparation of nanoscale zero-valent iron particles and application of nanoscale zero-valent iron particles in removal of chromium in water |
| CN106076249A (en) * | 2016-06-13 | 2016-11-09 | 环境保护部南京环境科学研究所 | A kind of modified alta-mud prepares the method for heavy metal particles adsorbent |
| CN106076249B (en) * | 2016-06-13 | 2019-03-29 | 环境保护部南京环境科学研究所 | A kind of method of modified alta-mud preparation heavy metal particles adsorbent |
| CN106390927A (en) * | 2016-09-09 | 2017-02-15 | 安徽工业大学 | Preparation method of bio-char composite adsorbing material for removing phosphates in surface water |
| CN106390927B (en) * | 2016-09-09 | 2020-07-10 | 安徽工业大学 | Preparation method of biological carbon composite adsorption material for removing phosphate from surface water |
| CN106807326A (en) * | 2016-12-22 | 2017-06-09 | 芜湖市鹏磊新材料有限公司 | A kind of load Nanoscale Iron bentone adsorbent of efficient removal Cr VI and preparation method thereof |
| CN106799204A (en) * | 2016-12-22 | 2017-06-06 | 芜湖市鹏磊新材料有限公司 | Big load Nanoscale Iron bentone adsorbent of a kind of contact area and preparation method thereof |
| CN107243332A (en) * | 2016-12-22 | 2017-10-13 | 芜湖市鹏磊新材料有限公司 | A kind of bentone adsorbent for loading kayexalate modified Nano iron and preparation method thereof |
| CN106807327A (en) * | 2016-12-22 | 2017-06-09 | 芜湖市鹏磊新材料有限公司 | A kind of load Nanoscale Iron bentone adsorbent sterilized for metallurgical briquetting zinc ion and preparation method thereof |
| CN106669628A (en) * | 2016-12-22 | 2017-05-17 | 芜湖市鹏磊新材料有限公司 | Nano iron-loaded bentonite adsorbent containing polyacrylamide for synergistically removing turbidity and preparation method thereof |
| CN106861654A (en) * | 2017-03-07 | 2017-06-20 | 辽宁工程技术大学 | The immobilization particle and its preparation and application of a kind of same for treating acidic mine wastewater |
| CN106861654B (en) * | 2017-03-07 | 2019-08-27 | 辽宁工程技术大学 | A kind of immobilization particle and its preparation and application of same for treating acidic mine wastewater |
| CN107032474A (en) * | 2017-06-06 | 2017-08-11 | 山东大学深圳研究院 | A kind of method of alta-mud load sulfide modifier nanometer iron composite material processing waste water containing chrome under magnetic fields |
| CN108097235B (en) * | 2017-11-27 | 2021-04-20 | 南京工业大学 | Preparation method of composite denitration catalyst with layered structure |
| CN108097235A (en) * | 2017-11-27 | 2018-06-01 | 南京工业大学 | A kind of preparation method of the compound denitrating catalyst of layer structure |
| CN110316855A (en) * | 2018-03-29 | 2019-10-11 | 宝山钢铁股份有限公司 | The processing method and system of Cr VI, total chromium and total zinc in cold rolling chromium zinc waste water are removed simultaneously |
| CN108676347A (en) * | 2018-05-18 | 2018-10-19 | 许水仙 | A kind of preparation method of the special antistatic agent of polyurethane plastics |
| RU2689576C1 (en) * | 2018-06-25 | 2019-05-28 | Федеральное государственное унитарное предприятие "Государственный научно-исследовательский институт органической химии и технологии" (ФГУП "ГосНИИОХТ") | Method of purifying high-arsenic-containing waste water |
| CN109589690B (en) * | 2018-12-11 | 2023-09-26 | 核工业理化工程研究院 | Preparation method of combined adsorption filter element capable of treating various radionuclides |
| CN109589690A (en) * | 2018-12-11 | 2019-04-09 | 核工业理化工程研究院 | The preparation method of the combined type absorption filter element of a variety of radionuclides can be handled |
| CN109513267A (en) * | 2018-12-14 | 2019-03-26 | 核工业理化工程研究院 | The preparation method and processing method of Spent Radioactive water treatment facilities, absorption filter element |
| CN109513267B (en) * | 2018-12-14 | 2024-01-05 | 核工业理化工程研究院 | Radioactive wastewater treatment device, preparation method of adsorption filter element and treatment method |
| CN110372060A (en) * | 2019-07-03 | 2019-10-25 | 合山市春旭环保科技有限责任公司 | A kind of composite water treatment medicament and preparation method thereof for the spent acid containing heavy metal |
| CN111672460A (en) * | 2020-06-04 | 2020-09-18 | 济南大学 | Composite modification method of zeolite and application of zeolite in removing nitrate in water |
| CN113666661A (en) * | 2021-06-19 | 2021-11-19 | 贵州省鑫瀚蓝环保科技有限公司 | Cement hexavalent chromium reducing agent and preparation method thereof |
| CN114950344A (en) * | 2022-03-30 | 2022-08-30 | 湖南工业大学 | Adsorbing material and preparation method and application thereof |
| CN115041181A (en) * | 2022-07-27 | 2022-09-13 | 广西至善新材料科技有限公司 | Bentonite-loaded iron molybdate catalyst and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103464091A (en) | Modified bentonite load nanometer iron material and preparation method thereof | |
| Lin et al. | A systematic review of metal organic frameworks materials for heavy metal removal: Synthesis, applications and mechanism | |
| Qiu et al. | Preferable phosphate sequestration by nano-La (III)(hydr) oxides modified wheat straw with excellent properties in regeneration | |
| Zhang et al. | Fabrication of L-cysteine stabilized α-FeOOH nanocomposite on porous hydrophilic biochar as an effective adsorbent for Pb2+ removal | |
| Li et al. | Recent advances in application of iron-manganese oxide nanomaterials for removal of heavy metals in the aquatic environment | |
| Luo et al. | Nanocomposites of graphene oxide-hydrated zirconium oxide for simultaneous removal of As (III) and As (V) from water | |
| Li et al. | Efficient removal of Cu (II) and citrate complexes by combined permanent magnetic resin and its mechanistic insights | |
| CN105174414B (en) | A kind of FeS/Fe0Composite and its preparation method and application | |
| Su et al. | Strong adsorption of phosphate by amorphous zirconium oxide nanoparticles | |
| CN103599751B (en) | The preparation method of thiol-functionalizedmagnetic magnetic silica nano-material | |
| Qi et al. | Enhanced oxidative and adsorptive capability towards antimony by copper-doping into magnetite magnetic particles | |
| CN103785855B (en) | The preparation method of the bentonite embedding year nano zero valence iron that a kind of multicomponent is organically-modified | |
| RU2547496C2 (en) | Magnetic composite sorbent | |
| CN111718719B (en) | Vulcanized nano zero-valent iron-acid activated montmorillonite composite material and preparation method and application thereof | |
| CN103464102A (en) | Porous composite adsorbing agent for removing stream substrate sludge contamination and preparation process of agent | |
| CN110451597A (en) | A kind of nano zero valence iron@molecular sieves compound material and preparation method thereof and purposes | |
| CN107983295B (en) | Core-shell structure iron-copper bi-metal material and its preparation method and application | |
| Shan et al. | Magnetite/hydrated cerium (III) carbonate for efficient phosphate elimination from aqueous solutions and the mechanistic investigation | |
| Zhu et al. | Nano-manganese oxides-modified biochar for efficient chelated copper citrate removal from water by oxidation-assisted adsorption process | |
| CN105032375A (en) | Preparation method of magnetic graphite-based heavy metal adsorbing material | |
| CN103962094A (en) | Preparation method for diatomite adsorbent chemically modified by nano gamma-Al2O3 adopting ordered structure | |
| CN105964225A (en) | Adsorbent, preparation method thereof and application of adsorbent in removal of low-concentration arsenic in underground water | |
| CN104014314A (en) | Bio-adsorbent, preparation method and application | |
| CN105668757A (en) | Graphene/sodium alginate globules modified by nano zero-valent iron and preparing method and application thereof | |
| CN105148835B (en) | Granular pattern 13X molecular sieves/attapulgite loaded Nanoscale Iron nickel material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131225 |