CN105251449A - Preparation method of porous carbon material for adsorbing malachite green in wastewater - Google Patents
Preparation method of porous carbon material for adsorbing malachite green in wastewater Download PDFInfo
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- CN105251449A CN105251449A CN201510815074.5A CN201510815074A CN105251449A CN 105251449 A CN105251449 A CN 105251449A CN 201510815074 A CN201510815074 A CN 201510815074A CN 105251449 A CN105251449 A CN 105251449A
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- porous carbon
- malachite green
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Abstract
The invention relates to a preparation method of a porous carbon material for adsorbing malachite green in wastewater and particularly relates to a method for preparing the porous carbon material for efficiently adsorbing the malachite green in the wastewater. In the method, wheat husks are taken as raw materials and activation treatment is adopted under certain conditions. The preparation method comprises the specific steps: firstly, drying and crushing the wheat husks, and sufficiently mixing the crushed wheat husks with an activating reagent at a certain mass ratio; and after carrying out the activation treatment under the certain conditions, filtering, washing and drying solids to obtain the porous carbon material. The prepared porous carbon material has the performance of efficiently adsorbing the malachite green. The method has a simple process and the porous carbon material has a good adsorption effect.
Description
Technical field
The present invention relates to a kind of preparation method of adsorbing the porous carbon materials of waste water Malachite Green, be specifically related to one and utilize wheat husk to prepare porous carbon through chemical activation for raw material, with this porous carbon for the new method of waste water from dyestuff Malachite Green removed by adsorbent.
Background technology
In recent years, along with the continuous quickening of process of industrialization, problem of environmental pollution is also more and more serious.In textile printing and dyeing industry, waste water from dyestuff discharge capacity increases year by year.Waste water from dyestuff colourity is high, complicated component, and toxicity is large, and noxious material is easily accumulated in the environment, and entering into water body can threaten greatly to aquatic biozone, even affects health.Malachite green is a kind of poisonous triphen first institute compounds of synthesis, be dyestuff and a kind of bactericide, be widely used as the biocide of food dye, food additives, bactericide, pest repellant and aquatic products industry, simultaneously as a kind of basic-dyeable fibre, can be used for silk, wool, jute, leather, cotton, papermaking and plastic cement etc.But malachite green has high toxicity to mammalian cell, be difficult to be degraded by microorganisms, and can liver cancer be caused.For human body, if suction can stimulate respiratory tract, eat meeting stimulating intestine and stomach by mistake, skin contact there will be red pain, and eye contact can cause permanent ophthalmic injuries.Malachite green is forbidden in a lot of country, due to its carcinogenicity, but part fisherman control infection of marine fishes fungi and in long-distance traffic, extend fish time-to-live in still use, the method of process malachite green has a lot, such as Physical, chemical method, bioanalysis etc., wherein absorption method just belongs to the one in Physical, many employings active carbon is adsorbent, but active carbon cost is higher, therefore develops the porous carbon materials preparing better absorption property for raw material with cheap living beings and has certain social effect.
Patent CN103058310A discloses a kind of method being sorbent treatment malachite green dye waste water with the mixture of slag and coke.Patent CN104338516A discloses a kind of method utilizing biological adsorption agent to remove waste water Malachite Green dyestuff.Patent CN104402105A discloses a kind of method of degrading malachite green, is specifically related in malachite green solution, add hydrogen peroxide and natrium nitrosum, and reaction certain hour, carries out oxidation processes by waste water Malachite Green.Patent CN104403969A discloses a kind of preparation method of peroxidase of degradable malachite green.And be that raw material have not been reported for the preparation of the porous carbon materials adsorbing waste water Malachite Green with wheat husk.Therefore adopt the living beings of relative low price to do to prepare the porous carbon with absorption property and there is important Research Significance.
The present invention is raw material with wheat husk, and pulverized, carry out activation process under certain condition, prepare a kind of porous carbon materials of efficient adsorption waste water Malachite Green, this kind of material has good absorption property for malachite green.
Summary of the invention
The invention provides a kind of new method utilizing wheat husk to prepare the porous carbon materials of absorbing dye waste water Malachite Green.
First wheat husk dries by the present invention, pulverizing, by wheat husk and the activator after pulverizing in mass ratio 1: 2 ~ 5 (Kg/Kg) mix, it reacted 0.5 hour at 400 DEG C, priming reaction 1 hour at 600 ~ 900 DEG C, solid filtering, washing, drying obtain porous carbon materials.At room temperature mixed with the malachite green solution of a certain amount of 300 ~ 500mg/L by a certain amount of porous carbon prepared under different condition, adjust ph is 6.5, and adsorption time is carry out determining adsorption under the condition of 30 ~ 240 minutes.
The invention is characterized in: activator used is potassium hydroxide and NaOH.
Detailed description of the invention
Embodiment 1: wheat husk is dried, pulverizes, by wheat husk and the potassium hydroxide after pulverizing in mass ratio 1: 4 (Kg/Kg) mix, it reacted 0.5 hour at 400 DEG C, priming reaction 1 hour at 800 DEG C, solid filtering, washing, drying obtain porous carbon materials.At room temperature mixed with the 20mL malachite green solution of 500mg/L by the 0.02g porous carbon of preparation, adjust ph is 6.5, and adsorption time is carry out determining adsorption under the condition of 200 minutes, and the adsorbance obtaining malachite green is 453mg/g.
Embodiment 2: changing activation temperature is 850 DEG C, and other conditions are with embodiment 1, and the porous carbon prepared is 419mg/g to malachite green adsorbance.
Embodiment 3: change wheat husk and potassium hydroxide in mass ratio 1: 3 (Kg/Kg) mix, and other conditions are with embodiment 1, and the porous carbon prepared is 407mg/g to malachite green adsorbance.
Embodiment 4: the initial concentration changing malachite green is 400mg/L, and other conditions are with embodiment 1, and the porous carbon prepared is 368mg/g to malachite green adsorbance.
Embodiment 5: the adsorption time changing malachite green is 60 minutes, and other conditions are with embodiment 1, and the porous carbon prepared is 403mg/g to malachite green adsorbance.
Embodiment 6: by wheat husk and the NaOH after pulverizing in mass ratio 1: 3 (Kg/Kg) mix, it reacted 0.5 hour at 400 DEG C, priming reaction 1 hour at 700 DEG C, solid filtering, washing, drying obtain porous carbon materials.At room temperature mixed with the malachite green solution of the 20mL of 500mg/L by the 0.02g porous carbon of preparation, adjust ph is 6.5, and adsorption time is carry out determining adsorption under the condition of 200 minutes, and the maximal absorptive capacity obtaining malachite green is 422mg/g.
Embodiment 7: changing activation temperature is 800 DEG C, and other conditions are with embodiment 6, and the porous carbon prepared is 389mg/g to malachite green adsorbance.
Embodiment 8: change wheat husk and mix with the mass ratio 1: 4 (Kg/Kg) of NaOH, other conditions are with embodiment 6, and the porous carbon prepared is 401mg/g to malachite green adsorbance.
Embodiment 9: the initial concentration changing malachite green is 400mg/L, and other conditions are with embodiment 6, and the porous carbon prepared is 344mg/g to malachite green adsorbance.
Embodiment 10: the adsorption time changing malachite green is 80 minutes, and other conditions are with embodiment 6, and the porous carbon prepared is 405mg/g to malachite green adsorbance.
Claims (2)
1. a preparation method for the porous carbon materials of absorbing dye waste water Malachite Green, its concrete steps are as follows:
First wheat husk dried, pulverize, by wheat husk and the activator after pulverizing in mass ratio 1: 2 ~ 5 (Kg/Kg) mix, it reacted 0.5 hour at 400 DEG C, priming reaction 1 hour at 600 ~ 900 DEG C, solid filtering, washing, drying obtain porous carbon materials.At room temperature mixed with the malachite green solution of a certain amount of 300 ~ 500mg/L by a certain amount of porous carbon prepared under different condition, adjust ph is 6.5, and adsorption time is carry out determining adsorption under the condition of 30 ~ 240 minutes.
2. a preparation method for the porous carbon materials of a kind of adsorbed water Malachite Green as claimed in claim 1, is characterized in that: use activator for potassium hydroxide or NaOH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510815074.5A CN105251449A (en) | 2015-11-20 | 2015-11-20 | Preparation method of porous carbon material for adsorbing malachite green in wastewater |
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| CN201510815074.5A CN105251449A (en) | 2015-11-20 | 2015-11-20 | Preparation method of porous carbon material for adsorbing malachite green in wastewater |
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| CN105251449A true CN105251449A (en) | 2016-01-20 |
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| CN201510815074.5A Pending CN105251449A (en) | 2015-11-20 | 2015-11-20 | Preparation method of porous carbon material for adsorbing malachite green in wastewater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191094A (en) * | 2018-01-26 | 2018-06-22 | 上海理工大学 | A kind of technique using low-grade coal base processing dyeing wastewater |
| CN110510697A (en) * | 2019-08-23 | 2019-11-29 | 上海市农业科学院 | A method of water body Malachite Green is handled using rice straw biology carbon adsorbent |
-
2015
- 2015-11-20 CN CN201510815074.5A patent/CN105251449A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191094A (en) * | 2018-01-26 | 2018-06-22 | 上海理工大学 | A kind of technique using low-grade coal base processing dyeing wastewater |
| CN110510697A (en) * | 2019-08-23 | 2019-11-29 | 上海市农业科学院 | A method of water body Malachite Green is handled using rice straw biology carbon adsorbent |
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Application publication date: 20160120 |
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| WD01 | Invention patent application deemed withdrawn after publication |