CN110465322A - A kind of steel slag/nitrogen-dopped activated carbon composite material and preparation method and application - Google Patents

A kind of steel slag/nitrogen-dopped activated carbon composite material and preparation method and application Download PDF

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CN110465322A
CN110465322A CN201910816353.1A CN201910816353A CN110465322A CN 110465322 A CN110465322 A CN 110465322A CN 201910816353 A CN201910816353 A CN 201910816353A CN 110465322 A CN110465322 A CN 110465322A
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nitrogen
activated carbon
composite material
dopped activated
steel slag
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CN110465322B (en
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邢波
董静文
杨郭
刘兴勇
叶宇玲
莫莎
宋翔
罗文�
杨波
王皓
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Sichuan University of Science and Engineering
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    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
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    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
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    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/34Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
    • B01J37/341Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
    • B01J37/343Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of ultrasonic wave energy
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    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
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    • C02F1/722Oxidation by peroxides
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    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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    • C02F2101/30Organic compounds
    • C02F2101/38Organic compounds containing nitrogen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
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Abstract

The invention discloses a kind of steel slag/nitrogen-dopped activated carbon composite material and preparation method and applications.The preparation method of composite material is first to carry out pre-oxidation treatment to active carbon;Then the active carbon after pre-oxidation is put into nitrogenous compound solution and is ultrasonically treated, then filtered, dry nitrogen-dopped activated carbon presoma;Nitrogen-dopped activated carbon presoma is calcined under nitrogen atmosphere again obtains nitrogen-dopped activated carbon;Finally steel slag, metal promoter and nitrogen-dopped activated carbon three are mixed, and calcine to obtain steel slag/nitrogen-dopped activated carbon composite material in a nitrogen atmosphere.Composite material produced by the present invention had not only remained with active carbon pore structure abundant, but also introduced nitrogen-containing functional group and contain various active metal in steel slag, was a kind of efficient catalytic material of catalytic oxidative desulfurization Organic Pollutants In Water.

Description

A kind of steel slag/nitrogen-dopped activated carbon composite material and preparation method and application
Technical field
The present invention relates to a kind for the treatment of of Organic Wastewater materials, and in particular to a kind of steel slag/nitrogen-dopped activated carbon composite material And its preparation method and application.
Background technique
Steel slag is the discarded object of power boiler discharge that steel industry unavoidably generates in ironmaking and steelmaking process, and yield is about Account for the 8%~15% of crude steel yield.It is estimated that China is about 0.81~1.2 hundred million tons in the quantum of output of steel slag in 2016, national steel Nearly 1,000,000,000 tons of the accumulative stockpiling of slag.But the comprehensive utilization ratio of China's steel slag is less than 40%, with 95% or more Systems in Certain Developed Countries Slag comprehensive utilization rate greatly differs from each other.A lot of steel slag pile up placement not only seriously occupies limited land resource, can also to atmosphere, Soil, surface water and groundwater pollute;For steel slag as a kind of secondary resource, main component includes CaO, SiO simultaneously2、 Al2O3、Fe2O3, MgO and a small amount of MnO, FeO, P2O5Deng if the serious wave of resource utilization and resource cannot be carried out effectively Take.Therefore, the comprehensive utilization ratio for how effectively improving steel slag reduces the environmental pollution of steel slag and realizes that " zero-emission " of steel slag is The challenge of China's steel industry, environmental protection industry (epi) and other relevant industries institute facings.
In addition, along with every profession and trades such as chemical industry, pesticide, medicine, printing and dyeing fast development and cities and towns integration into The continuous propulsion of journey, a large amount of organic wastewater also generate therewith, there is very important toxicity to imitate water environment and human health It answers.And in numerous method for processing organic wastewater, traditional Fenton (Fenton) oxidation technology is a kind of advanced oxidation skill of maturation Art, in acid condition Fe2+Activate H2O2The hydroxyl radical free radical with high oxidation activity and low selectivity is generated, in mild technique Under the conditions of (normal pressure ,~50 DEG C) can effectively degrade most organic pollutants in water body, have been widely used for engineering practice has Machine sewage treatment.But there are pH (~3) action panes that narrow, catalyst is difficult to recycle and cause to generate for traditional Fenton technique In place of the deficiencies of a large amount of sludge.Therefore, more and more researchs are dedicated to that multiphase-fenton Fenton (class for active metal component is made Fenton) catalyst is used for activity H2O2Hydroxyl radical free radical is generated, is generated with solving the recycling of the catalyst in whole process and sludge Problem.
Summary of the invention
The present invention tradition Fenton technical treatment organic wastewater there are aiming at the problem that and Comprehensive Utilization of Steel Slag utilize it is tight Compel property, provides a kind of steel slag/nitrogen-dopped activated carbon composite material and preparation method, and aoxidize drop for the change of organic wastewater Solution, can effectively realize and recycle to steel slag.The preparation method of composite material in the present invention the following steps are included:
S1: pre-oxidation treatment is carried out to active carbon, obtains magnesium oxide/absorbent charcoal;
S2: by magnesium oxide/absorbent charcoal immerse nitrogenous compound solution in and with the frequency ultrasound of 20~30KHz dispersion reaction 6~ The mass ratio of 12h, magnesium oxide/absorbent charcoal and nitrogenous compound is 5~20:1;It then filters, dry nitrogen-dopped activated carbon forerunner Body;
S3: in nitrogen atmosphere with 450~950 DEG C of temperature calcination nitrogen-dopped activated carbon 1~3h of presoma, it is living to obtain N doping Property charcoal;
S4: steel slag is mixed with nitrogen-dopped activated carbon according to the mass ratio of 0.1~1:1, adds and accounts for steel slag and N doping The metal promoter of active carbon gross mass 1~10%, under nitrogen atmosphere with 450~850 DEG C of temperature calcination 1~3h of mixture, Obtain steel slag/nitrogen-dopped activated carbon composite material.
Based on the above technical solution, the present invention can also be improved as follows.
Further, in S1 active carbon method for pre-oxidizing are as follows: by active carbon immerse concentration be 1mol/L nitric acid solution in, Constant temperature stirs 3~6h at 60 DEG C, then filters, washs, is dried to obtain magnesium oxide/absorbent charcoal.
Further, nitrogenous compound is melamine, aniline, cyanamid dimerization, acrylonitrile, urea or pyrroles.
Further, active carbon is active carbon from coal, the wooden matrix activated carbon or coconut shell based activated carbon, and active carbon is in granular form or powder Last shape.
Further, steel slag is blast furnace slag, converter slag, refining steel slag or electric furnace slag.
Further, the quality of metal promoter accounts for the 5% of converter slag containing vanadium and titanium oxides and nitrogen-dopped activated carbon gross mass in S4.
Further, the nitrate or chlorate of metal promoter Co, Cu, Mn, V, Fe, Ti, Ni.
The beneficial effects of the present invention are:
1. active carbon is as a kind of common cheap material, with large specific surface area, pore structure is flourishing, is easy to the table of regulation Surface properties, resistance to acid and alkali, resistance to hydro-thermal and the excellent properties such as environmental-friendly, to active carbon carry out after nitrogen-doped modified processing with steel slag It is kneaded, high-temperature process, obtains steel slag/nitrogen-dopped activated carbon composite material.One side nitrogen-dopped activated carbon developed pore structure The dispersion degree of active metal in steel slag can be improved, nitrogen-containing functional group and Fe, Mn in steel slag etc. are golden on another aspect active carbon Belong to element and form metal-Nx (M-Nx) active structure, the interaction between active metal and active carbon can be improved, to improve The catalytic activity and stability of composite material catalytic degradation organic wastewater.
2. nitrogen-dopped activated carbon and steel slag are to carry out compound, active carbon under hot conditions under the high temperature conditions in the present invention Play the role of reducing agent, by the Fe in steel slag3+It is reduced into Fe2+And Fe, improve Fe in composite material2+With the content of Fe, and Fe2+It is the chief active factor in type Fenton catalyst with Fe, to improve the work of composite material catalytic degradation organic pollutant Property.In addition, active carbon can also form Galvanic interaction between Fe, V, Mn isoreactivity metal in converter slag containing vanadium and titanium oxides, it can be into one Step promotes Organic Pollutants In Water degradation.
3. the method in the present invention is easy, quick, easy to operate, it is suitable for industrialized production, steel slag/N doping activity of preparation Carbon composite is a kind of effective catalyst, can effectively remove the organic pollutant in water.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.
Fig. 1 is that the present invention prepares steel slag/nitrogen-dopped activated carbon composite material Technology Roadmap;
Fig. 2 is oxidative degradation curve of the one gained composite material of embodiment to methyl orange;
Fig. 3 is oxidative degradation curve of the two gained composite material of embodiment to quadracycline;
Fig. 4 is oxidative degradation curve of the three gained composite material of embodiment to sulfamethazine;
Fig. 5 is oxidative degradation curve of the composite material obtained by example IV to sulfamethazine.
Specific embodiment
Below with reference to embodiment, specific embodiments of the present invention will be described in detail.Steel slag/N doping in the present invention The preparation route of absorbent charcoal composite material is as shown in Figure 1.
Embodiment one
A kind of steel slag/nitrogen-dopped activated carbon composite material, the composite material in the present embodiment are made by following steps:
S1: the active carbon from coal of commercial powder shape is immersed in the nitric acid solution that concentration is 1mol/L, the constant temperature at 60 DEG C Stir 3h;Then it filters, and with deionized water by residue washing to neutrality, then filter residue is put into baking oven and is dried with 50 DEG C of temperature It is dry, obtain magnesium oxide/absorbent charcoal.
S2: the mass ratio according to magnesium oxide/absorbent charcoal and nitrogenous compound is respectively 1:0,5:1,10:1,15:1 and 20:1, is incited somebody to action Magnesium oxide/absorbent charcoal immerses in corresponding melamine solution and disperses 6h with the frequency ultrasound of 30KHz, then filters, and filter residue is set It is dried in baking oven with 60 DEG C of temperature, obtains 5 kinds of nitrogen-dopped activated carbon presomas.
S3: 5 kinds of nitrogen-dopped activated carbon presomas are put into the lower 650 DEG C of calcinings 1h of nitrogen atmosphere, obtain 5 kinds of N doping activity Charcoal.
S4: vanadium titanium blast furnace slag is mixed with above-mentioned 5 kinds of nitrogen-dopped activated carbons according to the mass ratio of 0.5:1 respectively, then plus Enter to account for 2% iron chloride of converter slag containing vanadium and titanium oxides and nitrogen-dopped activated carbon gross mass, is put into crucible after mixing, then crucible is placed in pipe In formula furnace, in a nitrogen atmosphere with 650 DEG C of temperature calcination 1h, 5 kinds of steel slags/nitrogen-dopped activated carbon composite material is obtained.
To verify 5 kinds of steel slags/nitrogen-dopped activated carbon composite material obtained by the present embodiment to the processing capacity of organic wastewater, into The fenton-type reagent degradation experiment of Methyl Orange in Wastewater is gone.At 50 DEG C, H2O2(30%) dosage is 2mL, and catalyst amount is Under the conditions of 0.8g/L, the degradation effect such as Fig. 2 of different steel slags/nitrogen-dopped activated carbon composite material to 200mg/L Methyl Orange in Wastewater It is shown.As seen from the figure, after reacting 60min, independent H2O2Oxidation is only 5% or so to the degradation efficiency of methyl orange;With steel The addition of slag/nitrogen-dopped activated carbon composite material significantly improves catalysis H2O2The efficiency of oxidative degradation methyl orange, and with multiple The increase of nitrogen content in condensation material, the catalytic activity of composite material increase with it.After reacting 60min, best complex material pair The removal rate of methyl orange reaches 70% or so, illustrates that nitrogen-doped modified processing active carbon can effectively improve the catalysis of composite material Activity also indicates that steel slag obtained by the present invention/nitrogen-dopped activated carbon composite material is a kind of good organic sewage processing material Material.
Embodiment two
A kind of steel slag/nitrogen-dopped activated carbon composite material, the composite material in the present embodiment are made by following steps:
S1: commercial powder wood matrix activated carbon is immersed in the nitric acid solution that concentration is 1mol/L, constant temperature stirs at 60 DEG C 3h;Then it filters, and with deionized water by residue washing to neutrality, then filter residue is put into baking oven and is dried with 50 DEG C of temperature, Obtain magnesium oxide/absorbent charcoal.
S2: it is 10:1 according to the mass ratio of magnesium oxide/absorbent charcoal and nitrogenous compound, magnesium oxide/absorbent charcoal is immersed corresponding two Disperse 6h in paracyanogen amine aqueous solution and with the frequency ultrasound of 30kHz, then filters, and filter residue is placed in the temperature in baking oven with 60 DEG C Drying, obtains nitrogen-dopped activated carbon presoma.
S3: nitrogen-dopped activated carbon presoma being respectively put under nitrogen atmosphere and calcines 1h at 450 DEG C, 650 DEG C, 850 DEG C, Obtain 3 kinds of nitrogen-dopped activated carbons.
S4: vanadium titanium rotary furnace steel slag is mixed with above-mentioned 3 kinds of nitrogen-dopped activated carbons according to the mass ratio of 0.5:1 respectively, then plus Enter to account for 3% copper chloride of converter slag containing vanadium and titanium oxides and nitrogen-dopped activated carbon gross mass, is put into crucible after mixing, then crucible is placed in pipe In formula furnace, in a nitrogen atmosphere with 650 DEG C of temperature calcination 1h, 3 kinds of steel slags/nitrogen-dopped activated carbon composite material is obtained.
In order to verify 3 kinds of steel slags/nitrogen-dopped activated carbon composite material obtained by the present embodiment to the processing capacity of organic wastewater, The fenton-type reagent degradation experiment of quadracycline is carried out.At 50 DEG C, H2O2(30%) dosage is 2mL, and catalyst amount is Under the conditions of 0.8g/L, different steel slags/nitrogen-dopped activated carbon composite material to the degradation effect of 20mg/L quadracycline waste water such as Shown in Fig. 3.As seen from the figure, after reacting 60min, independent H2O2Oxidation is only 10% or so to the degradation efficiency of quadracycline; With the raising of nitrogen-dopped activated carbon presoma pyrolysis temperature, prepared steel slag/nitrogen-dopped activated carbon composite material is to hydrochloric acid The degradation efficiency of tetracycline also increases with it.After reacting 60min, best steel slag/nitrogen-dopped activated carbon composite material relative to Independent H2O2For oxidation, 65% or so is improved to the degradation efficiency of quadracycline.Show steel slag obtained by the present invention/ Nitrogen-dopped activated carbon composite material is a kind of good sewage treating material.
Embodiment three
A kind of steel slag/nitrogen-dopped activated carbon composite material, the composite material in the present embodiment are made by following steps:
S1: commercial powder coconut shell based activated carbon is immersed in the nitric acid solution that concentration is 1mol/L, constant temperature stirs at 60 DEG C Mix 3h;Then it filters, and with deionized water by residue washing to neutrality, then filter residue is put into baking oven and is dried with 50 DEG C of temperature It is dry, obtain magnesium oxide/absorbent charcoal.
S2: it is 5:1 according to the mass ratio of magnesium oxide/absorbent charcoal and nitrogenous compound, magnesium oxide/absorbent charcoal is immersed into corresponding urea Disperse 6h in solution and with the frequency ultrasound of 30kHz, then filter, and filter residue is placed in baking oven and is dried with 60 DEG C of temperature, Obtain nitrogen-dopped activated carbon presoma.
S3: nitrogen-dopped activated carbon presoma is put into the lower 850 DEG C of calcinings 2h of nitrogen atmosphere, obtains nitrogen-dopped activated carbon.
S4: refining steel slag and nitrogen-dopped activated carbon for vanadium titanium and mix respectively according to the mass ratio of 0.5:1,0.8:1 and 1:1, It adds and accounts for 2% cobalt chloride of converter slag containing vanadium and titanium oxides and nitrogen-dopped activated carbon gross mass, be put into crucible after mixing, then crucible is set In tube furnace, in a nitrogen atmosphere with 650 DEG C of temperature calcination 1h, 3 kinds of steel slags/nitrogen-dopped activated carbon composite material is obtained.
In order to verify 3 kinds of steel slags/nitrogen-dopped activated carbon composite material obtained by the present embodiment to the processing capacity of organic wastewater, The fenton-type reagent degradation experiment of sulfamethazine waste water is carried out.At 50 DEG C, H2O2(30%) dosage is 2mL, catalysis Under the conditions of agent dosage is 0.8g/L, different steel slags/nitrogen-dopped activated carbon composite material is to 20mg/L sulfamethazine waste water Degradation effect it is as shown in Figure 4.As seen from the figure, after reacting 60min, independent H2O2Aoxidize the degradation to sulfamethazine Efficiency is only 20% or so;With the addition of vanadium titanium refining steel slag, prepared steel slag/nitrogen-dopped activated carbon composite material is to sulphur The degradation efficiency of amine dimethyl pyrimidine also increases.This is because with the increase of vanadium titanium refining steel slag additional amount, composite wood The quantity of active metal increases with it in material, is consequently increased so as to cause the quantity of active site.After reacting 60min, most Good steel slag/nitrogen-dopped activated carbon composite material is relative to independent H2O2For oxidation, the degradation efficiency of sulfamethazine is mentioned It is high by 50% or so, show that steel slag obtained by the present invention/nitrogen-dopped activated carbon composite material is a kind of good sewage treatment Material.
Example IV
A kind of steel slag/nitrogen-dopped activated carbon composite material, the composite material in the present embodiment are made by following steps:
S1: commercial column coconut shell based activated carbon is immersed in the nitric acid solution that concentration is 1mol/L, constant temperature stirs at 60 DEG C Mix 3h;Then it filters, and with deionized water by residue washing to neutrality, then filter residue is put into baking oven and is dried with 50 DEG C of temperature It is dry, obtain magnesium oxide/absorbent charcoal.
S2: it is 5:1 according to the mass ratio of magnesium oxide/absorbent charcoal and nitrogenous compound, magnesium oxide/absorbent charcoal is immersed into corresponding aniline Disperse 6h in solution and with the frequency ultrasound of 30kHz, then filter, and filter residue is placed in baking oven and is dried with 60 DEG C of temperature, Obtain nitrogen-dopped activated carbon presoma.
S3: nitrogen-dopped activated carbon presoma is put into the lower 850 DEG C of calcinings 3h of nitrogen atmosphere, obtains nitrogen-dopped activated carbon.
S4: electric furnace slag and nitrogen-dopped activated carbon are mixed according to the mass ratio of 0.8:1, adds and accounts for electric furnace slag and nitrogen 4% manganese nitrate of dopped activated carbon gross mass, is put into crucible, then crucible is placed in tube furnace after mixing, in nitrogen gas With 450 DEG C, 650 DEG C, 850 DEG C of temperature calcination 2h under atmosphere, 3 kinds of steel slags/nitrogen-dopped activated carbon composite material is obtained.
In order to verify 3 kinds of steel slags/nitrogen-dopped activated carbon composite material obtained by the present embodiment to the processing capacity of organic wastewater, The fenton-type reagent degradation experiment of sulfamethazine waste water is carried out.At 50 DEG C, H2O2(30%) dosage is 2mL, catalysis Under the conditions of agent dosage is 0.8g/L, different steel slags/nitrogen-dopped activated carbon composite material is to 20mg/L sulfamethazine waste water Degradation effect it is as shown in Figure 5.As seen from the figure, after reacting 60min, independent H2O2Aoxidize the degradation to sulfamethazine Efficiency is only 20% or so;With the raising of calcination temperature, prepared steel slag/nitrogen-dopped activated carbon composite material is to sulfanilamide (SN) two The degradation efficiency of methylpyrimidine also increases accordingly.This is because one side active carbon is to active gold with the raising of calcination temperature The reduction of category enhances, and will form alloy structure between another aspect active metal, plays the role of improving catalytic activity.In After reacting 60min, best steel slag/nitrogen-dopped activated carbon composite material is relative to independent H2O2It is phonetic to sulfanilamide (SN) dimethyl for oxidation The degradation efficiency of pyridine improves 55% or so, shows that steel slag obtained by the present invention/nitrogen-dopped activated carbon composite material is a kind of Good sewage treating material.
Although be described in detail to a specific embodiment of the invention in conjunction with the embodiments, should not be construed as to this The restriction of the protection scope of patent.In range described by claims, those skilled in the art are without creative work The various modifications and deformation that can make still belong to the protection scope of this patent.

Claims (9)

1. a kind of steel slag/nitrogen-dopped activated carbon composite material preparation method, which comprises the following steps:
S1: pre-oxidation treatment is carried out to active carbon, obtains magnesium oxide/absorbent charcoal;
S2: by magnesium oxide/absorbent charcoal immerse nitrogenous compound solution in and ultrasonic disperse react 6~12h, magnesium oxide/absorbent charcoal with it is nitrogenous The mass ratio of compound is 5~20:1;It then filters, dry nitrogen-dopped activated carbon presoma;
S3: in nitrogen atmosphere with 450~950 DEG C of temperature calcination nitrogen-dopped activated carbon 1~3h of presoma, N doping activity is obtained Charcoal;
S4: steel slag is mixed with nitrogen-dopped activated carbon according to the mass ratio of 0.1~1:1, is added and is accounted for steel slag and N doping activity The metal promoter of charcoal gross mass 1~10% obtains steel under nitrogen atmosphere with 450~850 DEG C of temperature calcination 1~3h of mixture Slag/nitrogen-dopped activated carbon composite material.
2. preparation method according to claim 1, which is characterized in that the method for pre-oxidizing of active carbon in S1 are as follows: will be active Charcoal immerses in the nitric acid solution that concentration is 1mol/L, and constant temperature stirs 3~6h at 60 DEG C, then filters, washs, is dried to obtain oxygen Change active carbon.
3. preparation method according to claim 1, it is characterised in that: the nitrogenous compound is melamine, aniline, two Poly cyanamid, acrylonitrile, urea or pyrroles.
4. preparation method according to claim 1, it is characterised in that: the active carbon is active carbon from coal, the wooden base activity Charcoal or coconut shell based activated carbon, the active carbon are in granular form or powdered.
5. preparation method according to claim 1, it is characterised in that: the steel slag is blast furnace slag, converter slag, refining Steel slag or electric furnace slag.
6. preparation method according to claim 1, it is characterised in that: the quality of metal promoter accounts for converter slag containing vanadium and titanium oxides and nitrogen in S4 The 5% of dopped activated carbon gross mass.
7. preparation method according to claim 1 or 6, it is characterised in that: the metal promoter be Co, Cu, Mn, V, Fe, The nitrate or chlorate of Ti, Ni.
8. using prepared by the described in any item steel slags of claim 1~7/nitrogen-dopped activated carbon composite material preparation method Steel slag/nitrogen-dopped activated carbon composite material.
9. steel slag as claimed in claim 8/application of the nitrogen-dopped activated carbon composite material in treatment of Organic Wastewater.
CN201910816353.1A 2019-08-30 2019-08-30 Steel slag/nitrogen-doped activated carbon composite material and preparation method and application thereof Active CN110465322B (en)

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