CN110240233A - A kind of preparation method and applications of modification bamboo charcoal - Google Patents
A kind of preparation method and applications of modification bamboo charcoal Download PDFInfo
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- CN110240233A CN110240233A CN201910527830.2A CN201910527830A CN110240233A CN 110240233 A CN110240233 A CN 110240233A CN 201910527830 A CN201910527830 A CN 201910527830A CN 110240233 A CN110240233 A CN 110240233A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46152—Electrodes characterised by the shape or form
- C02F2001/46157—Perforated or foraminous electrodes
- C02F2001/46161—Porous electrodes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The invention discloses a kind of preparation method and applications of modification bamboo charcoal, functionalization is carried out to bamboo material first, obtain stephanoporate bamboo charcoal particle, again using stephanoporate bamboo charcoal as carrier, metal salt is evenly distributed on bamboo charcoal pore interior and surface simultaneously under ultrasonication and bamboo charcoal is with chemical bond and physics mode firm connection, modification bamboo charcoal is prepared.The high prices such as a large amount of copper, tin, cobalt or manganese for loading on the modification bamboo charcoal that this method obtains metallic element can increase potential difference in iron-carbon micro-electrolysis reaction, iron is set quickly to be oxidized to iron ion, make iron ion generate reaction to be promoted, so as to promote iron-carbon micro-electrolysis reaction process, there is good catalytic effect to iron-carbon micro-electrolysis reaction, water treatment efficiency is good, solves the problems, such as that existing modification bamboo charcoal is not suitable for iron-carbon micro-electrolysis.Present invention process is simple and easy, and raw material sources are abundant, cheap and easy to get, at low cost, it is easy to accomplish large-scale industrial production, it is with good economic efficiency.
Description
Technical field
The present invention relates to material for water treatment technical fields, a kind of preparation method in particular to modification bamboo charcoal and its answer
With.
Background technique
Iron-carbon micro-electrolysis is to form the good process that primary battery handles waste water, again using Principles of Metal Erosion method
Claim internal electrolysis, Filtration with Iron Filings etc., redox (electrochemical corrosion) effect occurs in water using iron, removes in sewage
Pollutant purifies water, and is a kind of ideal technology of current processing high concentrated organic wastewater.To improve electrochemical reaction activity,
Cathode is increased using additional carbon-based material, the selection of carbon-based material determines the good of the technique water treatment efficiency to a certain extent
It is bad.Due to the special structure of bamboo, bamboo charcoal has very flourishing big, mesoporous, makes it have stronger adsorptivity, can improve at water
Effect is managed, and has the characteristics that inexpensive, environmentally protective, therefore bamboo charcoal is a kind of comparatively ideal carbon-based material.
The method for preparing bamboo charcoal at present has earth kiln to heat direct firing process, destructive distillation hot tearing firing process etc., such as patent of invention
CN201610641743.6 discloses a kind of earth kiln firing process of bamboo charcoal desiccant, and bamboo wood is stacked at earth kiln and is heated, right
Bamboo wood carries out sootiness pre-dried 3 to 5 days, and bamboo wood is dried 5 to 7 days, to bamboo wood carry out pre- charing process 5 to
7 days；To bamboo wood carry out charing process 5 to 7 days, to bamboo wood carry out calcination processing 5 to 7 days, but method it is time-consuming and laborious, energy consumption compared with
Greatly, seriously polluted.Patent of invention CN201810380966.0 discloses a kind of preparation method of iron-bamboo charcoal composite material, by bamboo
Charcoal is mixed with acid reagent carries out the first modification, obtains sour modification bamboo charcoal；The sour modification bamboo charcoal is mixed into ferron
The second modification of row, obtains iron modification bamboo charcoal；The iron modification bamboo charcoal is mixed with water hyacinth leaf extracting solution, adjusts gained
The pH value of reaction mass is 6~6.8, carries out reduction reaction, iron in the composite material for obtaining iron-bamboo charcoal composite material, but obtaining
And the combination of bamboo charcoal is mainly by physical absorption, in conjunction with unstable, leads to when for iron-carbon micro-electrolysis that stability is not good enough, purification effect
Fruit is slow, water treatment efficiency is poor, and the effect without catalytic intensification iron-carbon micro-electrolysis reaction process.
Summary of the invention
In view of the above shortcomings of the prior art, the object of the present invention is to provide a kind of preparation method of modification bamboo charcoal and
It is applied, solve the preparation of existing bamboo charcoal there are energy consumptions high, time-consuming, it is seriously polluted and in iron-carbon micro-electrolysis stability it is bad,
The problems such as reaction is slowly, water treatment efficiency is poor.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions: a kind of preparation side of modification bamboo charcoal
Method, comprising the following steps:
1) bamboo material is placed in dilute acid soln after impregnating for 24 hours ~ 48h, is washed and dried, remove the organic matter on its surface and made
Its rough surface；
2) the pretreated bamboo material of step 1) is crushed, sieving obtains bamboo carbon powder, then is added and makes into the bamboo carbon powder
Hole agent, water and binder, it is 3 ~ 5mm bead that diameter is twisted into after being stirred for uniformly, and the bead is then placed in Muffle furnace
Middle calcining obtains stephanoporate bamboo charcoal bead；The diameter bead of 3 ~ 5mm ensure that the recycling and reusing of bamboo charcoal after iron-carbon micro-electrolysis.
3) the stephanoporate bamboo charcoal bead that step 2 obtains is uniformly mixed with metal salt and pH controlling agent, makes pH value of reaction system
Be 8 ~ 9, then place it in 15 ~ 70 DEG C of ultrasonic constant temp water-bath and sufficiently react 1 ~ 2h, then product is washed, be drying to obtain
To the modification bamboo charcoal.
Preferably, the pore creating material, binder, water and bamboo carbon powder mass ratio be 0.01 ~ 0.05:0.10 ~
0.30:0.1 ~ 0.4:1.
Preferably, the mass ratio of the stephanoporate bamboo charcoal bead and metal salt is 1:0.01 ~ 0.05.
Preferably, bamboo material be arrow bamboo, Dan Zhu, mottled bamboo, fishscale bamboo, the bamboo palm, thorn bamboo, fishpole bamboo, fernleaf hedge bamboo or
Trunk, limb and the product made of them of the bamboo plants such as Dendrocalamus sinicus.Moso bamboo is grass family Phyllostachys, for the big face of China
The bamboo class of product plantation, has the characteristics that high resiliency, high rigidity, high rigidity, fiber are long, can be used for material and uses, is edible, medicinal, seeing
Reward etc., is the ideal material for preparing bamboo charcoal.
Preferably, the dilute acid soln be mass fraction be 10 ~ 50% dilution heat of sulfuric acid, dilute nitric acid solution, dilute salt
Acid solution or acetum, above-mentioned weakly acidic solution can effectively remove bamboo material surface organic matter, and guarantee bamboo material itself not by
It destroys, also have the function of improving bamboo material pre-existent pore structure on this basis or increases bamboo material hole.Dust technology has oxidation
Property have oxidation to organic matter, it is weak compared with dilute sulfuric acid, dilute hydrochloric acid acidity, the corrosion to major ingredient itself can be reduced, be conditioning bamboo
The good reagent of material.
The soaking time is for 24 hours ~ 48h, sufficiently to remove bamboo material fractal surfaces organic matter, make its rough surface.With dilute
Nitric acid solution impregnates bamboo material for 24 hours, it is intended to remove the naturally remaining organic matter such as mud, dirt etc. in bamboo material surface, guarantee that subsequent bamboo charcoal is burnt
Quality processed, while increasing and improving major ingredient surface pore, increase porosity.
Preferably, the pore creating material be ammonium hydrogencarbonate, benzoic acid, phenolic resin, flour, graphene, ps microballoon,
PMMA microsphere or polyethylene glycol, above-mentioned pore creating material under aerobic conditions in high-temperature burning process, pore creating material particle in sintering because
After-flame and pore-creating, thus bamboo charcoal bead surface and it is internal form uniform microcellular structure, if sodium bicarbonate is in 50 DEG C or more temperature
Start to decompose when spending, is decomposed completely when temperature reaches 270 DEG C and generate sodium carbonate, water, carbon dioxide.In the sintering procedure of bamboo material
In, temperature is more than 270 DEG C, and sodium bicarbonate can decompose completely, to leave tiny hole in bead, increases the hole of bamboo charcoal
Gap rate.
The binder is sodium metasilicate, epoxy resin, polyurethane, polyimides, amino resins, first class acrylate, third
Olefin(e) acid Polyurethane or acrylic acid hydrocarbon Arrcostab.Wherein, polyimide binder includes fluorine polyimides, with ketone acid anhydride (BTDA) is single
Polyimides and polyamide-imide of body etc..Above-mentioned binder is high temperature-resistant polymer binder, because of its heat-resisting quantity, good
Good caking property, enables it to be unlikely to decompose under high temperature, and effectively bonding bamboo feed powder end guarantees its intensity in sintering procedure,
Finally form by a firing bamboo charcoal.
Preferably, the metal salt is copper chloride, stannic chloride, manganese chloride, cobalt chloride, chromium chloride, copper nitrate, nitric acid
One of tin, manganese nitrate, cobalt nitrate, chromic nitrate, copper sulphate, manganese sulfate, STANNOUS SULPHATE CRYSTALLINE and cobaltous sulfate are a variety of；The pH control
Agent be sodium hydroxide solution, calcium hydroxide solution, sodium carbonate liquor, calcium oxide solution, sodium radio-phosphate,P-32 solution or sodium bicarbonate solution,
The mass fraction of the pH controlling agent is 10 ~ 25%.The soda acid can alleviate to a certain extent, mitigated in loading process changes,
Keep pH value relatively stable 8 ~ 9, stablizes to proof load process and carry out.
Preferably, the calcination temperature is 600 ~ 800 DEG C；The calcination time is 4 ~ 8h, makes bamboo material complete in this way
Carbonized particles are converted into, and does not have sintering and burns phenomenon.This is because the calcination temperature of stephanoporate bamboo charcoal bead and time determine
The intensity and porosity of molding bamboo charcoal.If temperature is too low, the firing time is too short, and bamboo material cannot be fully converted to carbonized particles,
Keep final bamboo charcoal ingredient impure, porosity is low；Opposite, if temperature is excessively high, the firing time is too long, bamboo charcoal will be caused to burn, pine
It dissipates ingredient (ash content) to increase, will finally cause bamboo charcoal strength reduction.
Preferably, the ultrasonic power is 0.5 ~ 1KW, supersonic frequency is 17.5 ~ 22KHZ.Ultrasonic wave acts on
When aqueous solution, on the one hand, microvesicle (cavitation) will be formed in water, and enhance effect of impact between particle, can be played good
Stirring action.Therefore under ultrasonic wave effect, metal salt can forced vibration, the probability entered in bamboo charcoal hole increases
Add, metal salt is uniformly distributed in bamboo charcoal pore interior and surface；Still further aspect, ultrasound can generate fuel factor, make metal
Chemical reaction generation carbide occurs with charcoal or oxygen is cooperateed with to generate oxide or oxycarbide, passes through the association of high temperature and ultrasonic wave
Same-action makes the firm connection of bamboo charcoal and metal.
Preferably, the drying temperature be 50 ~ 70 DEG C, the time be 12 ~ for 24 hours.
The present invention also provides a kind of modification bamboo charcoals in the application on iron-carbon micro-electrolysis.What is loaded on modification bamboo charcoal is big
The high prices metallic elements such as amount copper, tin, cobalt or manganese can increase potential difference in iron-carbon micro-electrolysis reaction, be oxidized iron quickly
For iron ion, so that iron ion is generated reaction and be promoted, so as to promote iron-carbon micro-electrolysis reaction process.
Compared with prior art, the invention has the following beneficial effects:
1, the present invention carries out functionalization to bamboo material first, obtains stephanoporate bamboo charcoal particle, then using stephanoporate bamboo charcoal as carrier,
Metal salt is evenly distributed on bamboo charcoal pore interior and surface simultaneously under ultrasonication and bamboo charcoal is with chemical bond and physics mode jail
Consolidation is closed, and modification bamboo charcoal is prepared.The high price gold such as a large amount of copper, tin, cobalt or manganese for being loaded on the modification bamboo charcoal that this method obtains
Potential difference can be increased in iron-carbon micro-electrolysis reaction by belonging to element, so that iron is quickly oxidized to iron ion, generated iron ion
Reaction is promoted, and so as to promote iron-carbon micro-electrolysis reaction process, has good catalytic effect to iron-carbon micro-electrolysis reaction,
Water treatment efficiency is good, especially significantly improves to highly-saline treatment of Organic Wastewater effect, and it is uncomfortable to solve existing modification bamboo charcoal
The problem of for iron-carbon micro-electrolysis.
2, present invention process is simple and easy, and raw material sources are abundant, cheap and easy to get, at low cost, it is easy to accomplish large-scale work
Industry metaplasia produces, and provides new theoretical direction and technical support for the reaction of efficient catalytic iron-carbon micro-electrolysis, has good economy
Benefit.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail.
One, a kind of preparation method of modification bamboo charcoal
Embodiment 1
1) 50g bamboo material is placed in the dilute nitric acid solution that 500ml mass fraction is 20% after impregnating for 24 hours, is cleaned up simultaneously certainly
It so air-dries, removes the organic matter on its surface and make its rough surface；
2) the pretreated bamboo material of step 1) is put into crusher and is crushed, repeat to crush 3 times, then the powder completed will be crushed
50 meshes were taken out, bamboo carbon powder 46.7g is obtained.
3) 40g bamboo carbon powder and 8g polyimides, 2g sodium bicarbonate, 12ml deionization is added according to this in reaction unit
Water, it is 3mm bead that diameter is twisted into after being stirred for uniformly, and then the bead is placed in Muffle furnace and is calcined in temperature 800
DEG C fire 2h, after the completion of firing, after Muffle furnace is cooled to room temperature by the bamboo charcoal bead formed by a firing take out, be placed in water and wash
It washs, obtains stephanoporate bamboo charcoal bead；
4) 52.5g stephanoporate bamboo charcoal bead and 2.6g copper chloride are added in the reaction vessel, adds 500ml deionized water and quality
The sodium hydroxide solution that score is 25% is uniformly mixed, and so that pH value of reaction system is reached 8 ~ 9, is then placed it in 30 DEG C of ultrasound
1h, ultrasonic power 0.2kw, supersonic frequency 16KHZ are sufficiently reacted in water bath with thermostatic control, then by product through repeatedly washing, 70 DEG C
4h is dried to get Cu- bamboo charcoal is arrived.
Embodiment 2
1) 100g bamboo material is placed in the dilute nitric acid solution that 1000ml mass fraction is 30% after impregnating for 24 hours, is cleaned up simultaneously
Natural air drying removes the organic matter on its surface and makes its rough surface；
2) the pretreated bamboo material of step 1) is put into crusher and is crushed, repeat to crush 3 times, then the powder completed will be crushed
70 meshes were taken out, bamboo carbon powder 73.5g is obtained.
3) 60g bamboo carbon powder and 18g polyimides, 3g sodium bicarbonate, 20ml deionization is added according to this in reaction unit
Water, it is 3mm bead that diameter is twisted into after being stirred for uniformly, and then the bead is placed in Muffle furnace and is calcined in temperature 750
DEG C fire 2.5h, after the completion of firing, after Muffle furnace is cooled to room temperature by the bamboo charcoal bead formed by a firing take out, be placed in water
Washing, obtains stephanoporate bamboo charcoal bead；
4) 60g stephanoporate bamboo charcoal bead and 1.8g manganese nitrate are added in the reaction vessel, adds 600ml deionized water and quality point
Number is uniformly mixed for 25% sodium hydroxide solution, and pH value of reaction system is made to reach 8 ~ 9, and it is permanent then to place it in 30 DEG C of ultrasound
1h, ultrasonic power 0.25kw, supersonic frequency 17KHZ are sufficiently reacted in tepidarium, then product is done through repeatedly washing, 65 DEG C
Dry 5h to get arrive Mn- bamboo charcoal.
Embodiment 3
1) 50g bamboo material is placed in the dilute nitric acid solution that 500ml mass fraction is 35% after impregnating 30h, cleans up juxtaposition
In 50 DEG C of dry 12h, removes the organic matter on its surface and make its rough surface；
2) the pretreated bamboo material of step 1) is put into crusher and is crushed, repeat to crush 3 times, then the powder completed will be crushed
60 meshes were taken out, bamboo carbon powder 43.7g is obtained.
3) 40g bamboo carbon powder and 12g sodium metasilicate, 2g PPM microballoon, 12ml deionized water is added according to this in reaction unit,
It is 3mm bead that diameter is twisted into after being stirred for uniformly, then is placed in calcine in Muffle furnace by the bead and burn in 900 DEG C of temperature
The bamboo charcoal bead formed by a firing after the completion of firing, is taken out after Muffle furnace is cooled to room temperature, is placed in water and washs by 2h processed,
Obtain stephanoporate bamboo charcoal bead；
4) 45g stephanoporate bamboo charcoal bead and 1.4g cobalt nitrate are added in the reaction vessel, adds 500ml deionized water and quality point
Number is uniformly mixed for 25% sodium hydroxide solution, and pH value of reaction system is made to reach 8 ~ 9, and it is permanent then to place it in 30 DEG C of ultrasound
1h is sufficiently reacted in tepidarium, ultrasonic power is 0. 5kw, supersonic frequency 15.5KHZ, then by product through repeatedly washing, 60 DEG C
6h is dried to get Co- bamboo charcoal is arrived.
Embodiment 4
1) 70g bamboo material is placed in the dilute nitric acid solution that 700ml mass fraction is 40% after impregnating for 24 hours, cleans up juxtaposition
For 24 hours in 30 DEG C of dryings, it removes the organic matter on its surface and makes its rough surface；
2) the pretreated bamboo material of step 1) is put into crusher and is crushed, repeat to crush 3 times, then the powder completed will be crushed
70 meshes were taken out, bamboo carbon powder 65.7g. is obtained
3) 50g bamboo carbon powder and 10g sodium metasilicate, 2.5g benzoic acid, 10ml deionized water is added according to this in reaction unit, by it
Twisting into diameter after mixing evenly is 3mm bead, then is placed in calcine in Muffle furnace by the bead and fire in 900 DEG C of temperature
The bamboo charcoal bead formed by a firing after the completion of firing, is taken out after Muffle furnace is cooled to room temperature, is placed in water and washs, obtain by 2h
To stephanoporate bamboo charcoal bead；
4) 40g stephanoporate bamboo charcoal bead and 1.6g nitric acid tin are added in the reaction vessel, adds 400ml deionized water and quality point
Number is uniformly mixed for 25% sodium hydroxide solution, and pH value of reaction system is made to reach 8 ~ 9, and it is permanent then to place it in 30 DEG C of ultrasound
1h, ultrasonic power 0.5kw, supersonic frequency 16.5KHZ are sufficiently reacted in tepidarium, then by product through repeatedly washing, 65 DEG C
4h is dried to get Sn- bamboo charcoal is arrived.
Embodiment 5
1) 50g bamboo material is placed in the dilute nitric acid solution that 500ml mass fraction is 30% after impregnating 30h, cleans up juxtaposition
In 60 DEG C of dry 8h, removes the organic matter on its surface and make its rough surface；
2) the pretreated bamboo material of step 1) is put into crusher and is crushed, repeat to crush 3 times, then the powder completed will be crushed
60 meshes were taken out, bamboo carbon powder 47.8g is obtained.
3) 40g bamboo carbon powder and 8g epoxy resin, 2g PS microballoon, 12ml deionized water is added according to this in reaction unit,
It is 3mm bead that diameter is twisted into after being stirred for uniformly, then is placed in calcine in Muffle furnace by the bead and burn in 600 DEG C of temperature
The bamboo charcoal bead formed by a firing after the completion of firing, is taken out after Muffle furnace is cooled to room temperature, is placed in water and washs by 3h processed,
Obtain stephanoporate bamboo charcoal bead；
4) 40g stephanoporate bamboo charcoal bead and 2g nickel nitrate are added in the reaction vessel, adds 40ml deionized water and mass fraction
It is uniformly mixed for 25% sodium hydroxide solution, so that pH value of reaction system is reached 8 ~ 9, then place it in 30 DEG C of ultrasonic constant temp
1h, ultrasonic power 0.3kw, supersonic frequency 16KHZ are sufficiently reacted in water-bath, then by product through repeatedly washing, 70 DEG C of dryings
5h to get arrive Ni- modification bamboo charcoal.
Embodiment 6
1) 100g bamboo material is placed in the dilute nitric acid solution that 1000ml mass fraction is 10% after impregnating 48h, is cleaned up simultaneously
70 DEG C of dry 6h are placed in, the organic matter on its surface is removed and makes its rough surface；
2) the pretreated bamboo material of step 1) is put into crusher and is crushed, repeat to crush 3 times, then the powder completed will be crushed
Taking-up sieves with 100 mesh sieve, and obtains bamboo carbon powder 60.7g.
3) 60g bamboo carbon powder and 12g sodium metasilicate, 2g sodium bicarbonate, 18ml deionized water is added according to this in reaction unit,
It is 3mm bead that diameter is twisted into after being stirred for uniformly, then is placed in calcine in Muffle furnace by the bead and burn in 900 DEG C of temperature
The bamboo charcoal bead formed by a firing after the completion of firing, is taken out after Muffle furnace is cooled to room temperature, is placed in water and washs by 2h processed,
Obtain stephanoporate bamboo charcoal bead；
4) 50g stephanoporate bamboo charcoal bead and 1g lead chloride, 1g nickel nitrate are added in the reaction vessel, adds 500ml deionized water
The sodium hydroxide solution for being 25% with mass fraction is uniformly mixed, and so that pH value of reaction system is reached 8 ~ 9, is then placed it in 30 DEG C
Ultrasonic constant temp water-bath in sufficiently react 1h, ultrasonic power 0.2kw, supersonic frequency 18KHZ, then product is repeatedly washed
It washs, 70 DEG C of dry 5h are to get to Ni, Pb- modification bamboo charcoal.
Two, application test
Modification bamboo charcoal and iron powder prepared by embodiment 1 ~ 6 is added in iron-carbon micro-electrolysis reaction tank, and iron powder and bamboo charcoal add quality
Than be 3000 ~ 100000 mg/L for 2:1, raw wastewater COD, ammonia nitrogen is 30 ~ 500mg/L, total nitrogen is 30 ~ 600mg/L, salt content
0-18%, starting iron-carbon micro-electrolysis reaction unit carries out iron-carbon micro-electrolysis reaction and is discharged after the processing of 2h, then to out
Water is detected, and show that the results are shown in Table 1 to the removal rate of Wastewater Pollutant.
Table 1
| Product | The removal rate (%) of COD | The removal rate (%) of ammonia nitrogen | The removal rate (%) of total nitrogen |
| Embodiment 1 | 73.5 | 69.5 | 75.9 |
| Embodiment 2 | 68.7 | 65.4 | 68.9 |
| Embodiment 3 | 75.7 | 67.9 | 70.5 |
| Embodiment 4 | 71.2 | 76.4 | 75.3 |
| Embodiment 5 | 73.5 | 71.2 | 67.7 |
| Embodiment 6 | 76.8 | 77.5 | 70.9 |
| Commercial product 1(active carbon and iron filings) | 30.5 | 17.9 | 22.0 |
| Commercial product 2(active carbon and iron filings) | 23.8 | 15.8 | 22.9 |
As it can be seen from table 1 the present invention strengthens iron-carbon micro-electrolysis by supported active metals catalytic compared with commercial product
The removal efficiency of process, COD with higher, ammonia nitrogen, total nitrogen.In particular for high concentrated organic wastewater and high salt organic waste
Water has preferable COD removal effect, and is remarkably improved the biodegradability of waste water.And use conventional active carbon and iron
The iron-carbon micro-electrolysis of bits is lower to COD removal rate, poor to the degradation effect of macromolecule organic, in addition, having to highly-saline
Machine water treatment effect is worse.The catalytic intensification method of technology can be significantly improved to highly-saline organic wastewater through the invention
Treatment effect.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not limitation with the present invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of preparation method of modification bamboo charcoal, which comprises the following steps:
1) bamboo material is placed in dilute acid soln after impregnating for 24 hours ~ 48h, is washed and dried, remove the organic matter on its surface and made
Its rough surface；
2) the pretreated bamboo material of step 1) is crushed, sieving obtains bamboo carbon powder, then is added and makes into the bamboo carbon powder
Hole agent, water and binder, it is 3 ~ 5mm bead that diameter is twisted into after being stirred for uniformly, and the bead is then placed in Muffle furnace
Middle calcining obtains stephanoporate bamboo charcoal bead；
3) the stephanoporate bamboo charcoal bead that step 2 obtains is uniformly mixed with metal salt and pH controlling agent, reaches pH value of reaction system
8 ~ 9, it then places it in 15 ~ 70 DEG C of ultrasonic constant temp water-bath and sufficiently reacts 1 ~ 2h, then product is washed, drying to obtain
The modification bamboo charcoal.
2. the preparation method of modification bamboo charcoal according to claim 1, which is characterized in that the pore creating material, binder, water and bamboo
The mass ratio of carbon powder is 0.01 ~ 0.05:0.10 ~ 0.30:0.1 ~ 0.4:1.
3. the preparation method of modification bamboo charcoal according to claim 1, which is characterized in that the stephanoporate bamboo charcoal bead and metal salt
Mass ratio be 1:0.01 ~ 0.05.
4. the preparation method of modification bamboo charcoal according to claim 1, which is characterized in that the dilute acid soln is that dilute sulfuric acid is molten
Liquid, dilute nitric acid solution, dilute hydrochloric acid solution or acetum.
5. the preparation method of modification bamboo charcoal according to claim 1, which is characterized in that the pore creating material is ammonium hydrogencarbonate, benzene
One of formic acid, phenolic resin, flour, graphene, ps microballoon, PMMA microsphere and polyethylene glycol are a variety of；The binder
For sodium metasilicate, epoxy resin, polyurethane, polyimides, amino resins, first class acrylate, acrylic acid Polyurethane and acrylic acid
One of hydrocarbon Arrcostab is a variety of.
6. the preparation method of modification bamboo charcoal according to claim 1, which is characterized in that the metal salt is copper chloride, chlorination
Tin, manganese chloride, cobalt chloride, chromium chloride, copper nitrate, nitric acid tin, manganese nitrate, cobalt nitrate, chromic nitrate, copper sulphate, manganese sulfate, sulfuric acid
One of tin and cobaltous sulfate are a variety of；The pH controlling agent be sodium hydroxide solution, calcium hydroxide solution, sodium carbonate liquor,
Calcium oxide solution, sodium radio-phosphate,P-32 solution or sodium bicarbonate solution, the mass fraction of the pH controlling agent are 10 ~ 25%.
7. the preparation method of modification bamboo charcoal according to claim 1, which is characterized in that the calcination temperature is 600 ~ 800 DEG C；
The calcination time is 4 ~ 8h.
8. the preparation method of modification bamboo charcoal according to claim 1, which is characterized in that the ultrasonic power is 0.5 ~ 1KW,
Supersonic frequency is 17.5 ~ 22KHZ.
9. the preparation method of modification bamboo charcoal according to claim 1, which is characterized in that drying temperature described in step 3) be 50 ~
70 DEG C, the time be 12 ~ for 24 hours.
10. application of the modification bamboo charcoal that any one of such as claim 1 ~ 9 preparation method obtains in terms of iron-carbon micro-electrolysis.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676735A (en) * | 2020-05-18 | 2020-09-18 | 仙鹤股份有限公司 | Preparation method of craft packaging paper for baking |
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| CN113683183A (en) * | 2021-08-01 | 2021-11-23 | 河海大学 | Preparation method of iron-carbon micro-electrolysis filler for removing anionic surfactant |
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| CN113832490B (en) * | 2021-08-13 | 2024-01-16 | 中国科学院城市环境研究所 | Bamboo-wood-based gas diffusion catalytic electrode and application thereof |
| CN114210970A (en) * | 2021-12-28 | 2022-03-22 | 北京建工环境修复股份有限公司 | Coated iron-carbon composite material, preparation and modification methods thereof and sewage treatment method |
| CN114210970B (en) * | 2021-12-28 | 2023-09-22 | 北京建工环境修复股份有限公司 | Coated iron-carbon composite material, preparation method, modification method and sewage treatment method |
| CN114452936A (en) * | 2022-03-04 | 2022-05-10 | 湖南省环境保护科学研究院 | Preparation method and application of fenton sludge-based magnetic adsorbent |
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