CN108745307A - Modified corn core goes the purposes of vanadium in water removal - Google Patents
Modified corn core goes the purposes of vanadium in water removal Download PDFInfo
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- CN108745307A CN108745307A CN201810687510.9A CN201810687510A CN108745307A CN 108745307 A CN108745307 A CN 108745307A CN 201810687510 A CN201810687510 A CN 201810687510A CN 108745307 A CN108745307 A CN 108745307A
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- vanadium
- potassium permanganate
- corn core
- modified corn
- corncob
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/485—Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to the purposes that modified corn core removes vanadium in water removal, belong to field of waste water treatment.The present invention provides the purposes that modified corn core removes vanadium in water removal, wherein the modified corn core is that corncob is obtained through potassium permanganate oxidation.In addition, the present invention also provides for go water removal in vanadium adsorbent, for go water removal in vanadium leaching column and go water removal in vanadium method.With existing absorption except compared with vanadium method, there is the present invention raw material to be easy to get, is of low cost, is easy to operate, except the advantages such as vanadium is efficient, and non-secondary pollution, has environment friendly, is very suitable for industrially promoting and applying.
Description
Technical field
The present invention relates to the purposes that modified corn core removes vanadium in water removal, belong to field of waste water treatment.
Background technology
The waste water generated in vanadium industrial production is due to containing the vanadium ion for having more than more times of environmental carrying capacity, if without processing
It is directly discharged in nature, it will serious pollution is generated to environment.Therefore, it is carried out for the pollutant abatement technology of vanadium-containing water
It improves, vanadium ion therein is enable to recycle, not only there is certain economic implications, but also to keeping the health of water body, safeguarding
Ecological environment is of great significance.
Currently, the processing method of vanadium-containing water mainly has chemical precipitation method, electrochemical deposition method, ion-exchange and absorption
Method.Wherein, chemical precipitation method is earliest adopted processing method, is divided into the iron filings precipitation method, the sulfur dioxide precipitation method and barium salt
The precipitation method, the disadvantage is that being difficult to carry out the regeneration of vanadium.Electrochemical process is that the vanadium ion in waste water is distinguished under the action of electric current
Electrolytic cell negative and positive two-stage occur redox reaction and be enriched with, the ferrous ion being precipitated on anode by pentavalent vanadium ion also
Original is at tetravalence or trivalent vanadium ion, while the hydroxide ion nearby generated with cathode forms precipitation to be removed.This method
It is easy to operate, convenient for management, it can be recycled using the vanadium ion in waste water as a kind of resource, but generally be only used for handling
The electroplating wastewater that vanadium concentration is higher and heavy metal type is relatively simple；In addition, need to consume in operating process a large amount of electric energy and
Ferrous material, and a large amount of sludge are generated, it is easy to cause secondary pollution to environment.Ion exchange resin is a kind of artificial synthesized contain
Have the polymer-function material of a large amount of commutative groups of activity, the exchangeable ion on ion exchange resin can in waste water
Vanadium ion swaps reaction, vanadium ion is replaced onto ion exchange resin, to be removed.It is handled and is contained using this method
Vanadium waste, effluent quality is good, the vanadium in recoverable wastewater, treatment effect also relatively stablize, but be only applicable to processing vanadium concentration compared with
Low waste water, in addition ion exchange resin dosage is larger, and resin is easy contaminated and causes regeneration difficult, at waste water
Manage high expensive.Absorption method is will be one or more heavy metal ion adsorbed in surface in water body using adsorbent, then passes through
Desorption achievees the purpose that separation and enriching heavy metal.Compared to chemical precipitation method, electrochemical deposition method and ion-exchange,
Absorption method is easy to recycle metal ion, and processing cost is low, and advantage is clearly.Therefore, exploitation derive from a wealth of sources,
It is cheap, environmental-friendly and to the higher adsorbent of vanadium adsorption efficiency, it is of great significance for the improvement of vanadium-containing water.
Invention content
The purpose of the present invention is to provide the purposes that modified corn core removes vanadium in water removal.Another object of the present invention is to carry
For for go water removal in vanadium adsorbent, for go water removal in vanadium leaching column and go water removal in vanadium method.
The present invention provides the purposes that modified corn core removes vanadium in water removal, wherein the modified corn core is corncob warp
What potassium permanganate oxidation obtained.
Further, the modified corn core is prepared by following methods：Corncob is taken, is crushed, by corncob powder
Be placed in potassium permanganate solution and aoxidize, be separated by solid-liquid separation, solid phase be washed with water to it is neutral to get.
Further, the purposes meets at least one of following：
Corncob crushing sieves with 100 mesh sieve；
A concentration of 20~60g/L of the potassium permanganate solution；
The dry weight of the corncob powder：Potassium permanganate quality=(5：6)~(25：6)；
In 15~25 DEG C of oxidations；
Aoxidize 6~48h；
With the speed oscillation of 400~600rpm when oxidation；
Solid phase is washed with deionized to neutrality.
Preferably, a concentration of 40~60g/L of the potassium permanganate solution.
Preferably, 12~48h is aoxidized.
Through investigating, when potassium permanganate solution concentration is less than 20g/L, modified effect is bad, can influence the place of vanadium-containing water
Manage effect.The solubility of potassium permanganate in water is 6.38g/100ml (20 DEG C), therefore the upper limit of concentration of solution is 60g/L.
The dry weight of the corncob powder：Potassium permanganate quality is more than 25：When 6, modified effect is bad, can influence useless containing vanadium
The treatment effect of water.
When oxidization time is less than 6h, modified effect is bad；Oxidization time is more than 48h, and working efficiency can have an impact.
The present invention provides the adsorbents for removing vanadium in water removal, including modified corn core and activated carbon, described modified beautiful
Meter Xin is that corncob is obtained through potassium permanganate oxidation.
Further, the modified corn core is prepared by following methods：Corncob is taken, is crushed, by corncob powder
Be placed in potassium permanganate solution and aoxidize, be separated by solid-liquid separation, solid phase be washed with water to it is neutral to get.
Further, the adsorbent meets at least one of following：
Corncob crushing sieves with 100 mesh sieve；
A concentration of 20~60g/L of the potassium permanganate solution；
The dry weight of the corncob powder：Potassium permanganate quality=(5：6)~(25：6)；
In 15~25 DEG C of oxidations；
Aoxidize 6~48h；
With the speed oscillation of 400~600rpm when oxidation；
Solid phase is washed with deionized to neutrality.
Preferably, a concentration of 40~60g/L of the potassium permanganate solution.
Preferably, 12~48h is aoxidized.
Further, the activated carbon meets at least one of following：
Specific surface area is 850 ± 100m2/g；
Void content is 1 ± 0.2ml/g；
It is washed through deionized water.
Further, the dry weight of the modified corn core：Quality of activated carbon=(3：7)~(7：3).
The present invention provides the leaching columns for removing vanadium in water removal, contain above-mentioned adsorbent.
The present invention provides the methods for removing vanadium in water removal, include the following steps：Water containing vanadium is added to the leaching column
In, it fully adsorbs, collects filtrate, you can.
Preferably, adsorption time be 12~for 24 hours.
The present invention provides the purposes that modified corn core removes vanadium in water removal, compared with existing absorption is except vanadium method, the present invention
It is easy to get with raw material, is of low cost, is easy to operate, except the advantages such as vanadium is efficient, and non-secondary pollution, having environmental-friendly
Property, it is very suitable for industrially promoting and applying.
Specific implementation mode
The raw material that is used in the specific embodiment of the invention, equipment are known product, pass through and buy commercial product and obtain.
The present invention provides the purposes that modified corn core removes vanadium in water removal, wherein the modified corn core is corncob warp
What potassium permanganate oxidation obtained.
Inventor has found by investigating, since corn wicking surface not only has higher porosity and large specific surface area, and
And also contain many active function groups, there is preferable suction-operated to vanadium, can be applied to the processing of vanadium-containing water.Moreover, sharp
After being modified processing to corncob with the strong oxidizing property of potassium permanganate, corncob surface can be made more coarse, inside go out
Existing more hole and loose fibre structure, specific surface area increase, to provide more active sites for the absorption of vanadium ion
Point, except vanadium efficiency further increases.
Further, the present invention also provides the adsorbents for removing vanadium in water removal, including modified corn core and activated carbon,
The modified corn core is that corncob is obtained through potassium permanganate oxidation.
Activated carbon is to be rich in the substance (such as timber, coal, shell) of carbon under certain temperature, pressure condition, passes through heat
A kind of porous, bigger serface the substance formed is solved, absorption property is very good.The present invention by modified corn core with activity
Charcoal is applied in combination, and can greatly improve the suction-operated to vanadium, and gained adsorbent collection modified corn core and activated carbon is excellent
Point, and compensates for mutually respective disadvantage.
Further, the present invention is fitted into leaching column, using activated carbon and modified corn core as sorbing material for going
Except the vanadium in water body.
It can be visually observed that by leaching column：The composition of modified corn core and activated carbon of the present invention is to vanadium in wastewater
The removal rate of ion can reach 31.58%, remove vanadium significant effect.
Modified corn core, activated carbon are combined by the present invention with leaching column, can be widely applied to artificial swamp, running water system
In equal Ecosystem restoration systems, have broad application prospects.
Embodiment 1 handles vanadium-containing water using leaching column of the present invention
Commercially available bulky grain activated carbon (850 ± 100m of specific surface area2/ g, 1 ± 0.2ml/g of void content), wash 2 with clear water
It is washed with deionized again after secondary 2 times；Fresh corn core is taken, the silt for washing away surface is impregnated with clear water, 1cm is cut into scissors2
Fritter is washed with deionized 2 times again after washing 2 times with clear water；After corncob is placed in drying in oven to constant weight, with crushing
Machine obtains dusty material after smashing, and with the quasi- sub-sieve screening materials of 100 targets, envelope is for use；50g potassium permanganate is dissolved in
In 1000ml deionized waters, it is configured to the liquor potassic permanganate of 50g/L；The pretreated corncob powders of 60g are weighed to be added
The liquor potassic permanganate of a concentration of 50g/L of 1000ml, with ParafilmTM bottleneck, (15~25 DEG C) are placed in constant temperature under room temperature
400rpm vibrates 18h in oscillator, filters, it is about 7 that filter residue, which is rinsed with deionized water to pH value of solution, and by filter residue, drying to constant weight；
It weighs 50g modified corn core powder and is uniformly mixed with the commercially available active carbon powders of 50g and is placed in leaching column, it is discontinuous to be added
1000ml vanadium-containing waters, (15~25 DEG C) reaction 12h, collect filtrate under room temperature, detect content of vanadium in filtrate.It gives up before leaching
Content of vanadium is 150mg/L in water, and content of vanadium is 129.35mg/L in filtrate, is computed, and vanadium removal rate is 18.05%.
Embodiment 2 handles vanadium-containing water using leaching column of the present invention
Commercially available bulky grain activated carbon (850 ± 100m of specific surface area2/ g, 1 ± 0.2ml/g of void content), wash 2 with clear water
It is washed with deionized again after secondary 2 times；Fresh corn core is taken, the silt for washing away surface is impregnated with clear water, 1cm is cut into scissors2
Fritter is washed with deionized 2 times again after washing 2 times with clear water；After corncob is placed in drying in oven to constant weight, with crushing
Machine obtains dusty material after smashing, and with the quasi- sub-sieve screening materials of 100 targets, envelope is for use；40g potassium permanganate is dissolved in
In 1000ml deionized waters, it is configured to the liquor potassic permanganate of 40g/L；The pretreated corncob powders of 100g are weighed to be added
The liquor potassic permanganate of a concentration of 40g/L of 600ml, with ParafilmTM bottleneck, (15~25 DEG C) are placed in constant temperature under room temperature
500rpm vibrates 12h in oscillator, filters, it is about 7 that filter residue, which is rinsed with deionized water to pH value of solution, and by filter residue, drying to constant weight；
It weighs the modified modified corncob powders of 30g and is uniformly mixed with the commercially available active carbon powders of 70g and is placed in leaching column, it is discontinuous to be added
1000ml vanadium-containing waters, (15~25 DEG C) reaction 18h, collect filtrate under room temperature, detect content of vanadium in filtrate.It gives up before leaching
Content of vanadium is 120mg/L in water, and content of vanadium is 100.39mg/L in filtrate, is computed, and vanadium removal rate is 21.36%.
Embodiment 3 handles vanadium-containing water using leaching column of the present invention
Commercially available bulky grain activated carbon (850 ± 100m of specific surface area2/ g, 1 ± 0.2ml/g of void content), wash 2 with clear water
It is washed with deionized again after secondary 2 times；Fresh corn core is taken, the silt for washing away surface is impregnated with clear water, 1cm is cut into scissors2
Fritter is washed with deionized 2 times again after washing 2 times with clear water；After corncob is placed in drying in oven to constant weight, with crushing
Machine obtains dusty material after smashing, and with the quasi- sub-sieve screening materials of 100 targets, envelope is for use；60g potassium permanganate is dissolved in
In 1000ml deionized waters, it is configured to the liquor potassic permanganate of 60g/L；The pretreated corncob powders of 50g are weighed to be added
The liquor potassic permanganate of a concentration of 60g/L of 1000ml, with ParafilmTM bottleneck, (15~25 DEG C) are placed in constant temperature under room temperature
600rpm vibrates 48h in oscillator, filters, it is about 7 that filter residue, which is rinsed with deionized water to pH value of solution, and by filter residue, drying to constant weight；
It weighs the modified modified corncob powders of 70g and is uniformly mixed with the commercially available active carbon powders of 30g and is placed in leaching column, it is discontinuous to be added
1000ml vanadium-containing waters, under room temperature (15~25 DEG C) reactions for 24 hours, collect filtrate, detect content of vanadium in filtrate.It gives up before leaching
Content of vanadium is 135mg/L in water, and content of vanadium is 96.22mg/L in filtrate, is computed, and vanadium removal rate is 31.58%.
Claims (10)
1. modified corn core goes the purposes of vanadium in water removal, wherein the modified corn core is that corncob is obtained through potassium permanganate oxidation
It arrives.
2. purposes as described in claim 1, it is characterized in that：The modified corn core is prepared by following methods：Take corn
Core crushes, corncob powder is placed in potassium permanganate solution and is aoxidized, and is separated by solid-liquid separation, and solid phase is washed with water to neutrality, i.e.,
?.
3. purposes as claimed in claim 2, it is characterized in that：Meet at least one of following：
Corncob crushing sieves with 100 mesh sieve；
A concentration of 20~60g/L of the potassium permanganate solution；
Preferably, a concentration of 40~60g/L of the potassium permanganate solution；
The dry weight of the corncob powder：Potassium permanganate quality=(5：6)~(25：6)；
In 15~25 DEG C of oxidations；
Aoxidize 6~48h；
Preferably, 12~48h is aoxidized；
With the speed oscillation of 400~600rpm when oxidation；
Solid phase is washed with deionized to neutrality.
4. the adsorbent for removing vanadium in water removal, it is characterized in that：Including modified corn core and activated carbon, the modified corn core are
Corncob is obtained through potassium permanganate oxidation.
5. adsorbent as claimed in claim 4, it is characterized in that：The modified corn core is prepared by following methods：Take jade
Meter Xin is crushed, corncob powder is placed in potassium permanganate solution and is aoxidized, and is separated by solid-liquid separation, and solid phase is washed with water to neutrality, i.e.,
?.
6. adsorbent as claimed in claim 5, it is characterized in that：Meet at least one of following：
Corncob crushing sieves with 100 mesh sieve；
A concentration of 20~60g/L of the potassium permanganate solution；
Preferably, a concentration of 40~60g/L of the potassium permanganate solution；
The dry weight of the corncob powder：Potassium permanganate quality=(5：6)~(25：6)；
In 15~25 DEG C of oxidations；
Aoxidize 6~48h；
Preferably, 12~48h is aoxidized；
With the speed oscillation of 400~600rpm when oxidation；
Solid phase is washed with deionized to neutrality.
7. adsorbent as claimed in claim 4, it is characterized in that：The activated carbon meets at least one of following：
Specific surface area is 850 ± 100m2/g；
Void content is 1 ± 0.2ml/g；
It is washed through deionized water.
8. the adsorbent as described in claim 4~7 any one, it is characterized in that：The dry weight of the modified corn core：Activated carbon
Quality=(3：7)~(7：3).
9. the leaching column for removing vanadium in water removal, it is characterized in that：Contain the adsorbent described in claim 4~8 any one.
10. the method for removing vanadium in water removal, it is characterized in that：Include the following steps：Water containing vanadium is added to the leaching described in claim 9
It in filter column, fully adsorbs, collects filtrate, you can；Preferably, adsorption time be 12~for 24 hours.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112831491A (en) * | 2021-02-09 | 2021-05-25 | 杭州楠大环保科技有限公司 | Preparation method of microbial agent carrier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112831491A (en) * | 2021-02-09 | 2021-05-25 | 杭州楠大环保科技有限公司 | Preparation method of microbial agent carrier |
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