CN106811497A - The technique that a kind of utilization corncob hydrolysis residue prepares activated carbon - Google Patents
The technique that a kind of utilization corncob hydrolysis residue prepares activated carbon Download PDFInfo
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- CN106811497A CN106811497A CN201510857749.2A CN201510857749A CN106811497A CN 106811497 A CN106811497 A CN 106811497A CN 201510857749 A CN201510857749 A CN 201510857749A CN 106811497 A CN106811497 A CN 106811497A
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Abstract
A kind of utilization corncob hydrolysis residue prepares the technique of activated carbon, belongs to technical field of functional sugar production.Including going cellulose, carbonization-activation, washing, four steps of dries pulverizing.The preparation technology is utilized and prepares xylose through the corncob hydrolysis residue residue after cellulase degradation（Alcohol）Production activated carbon, the need for itself production can not only be met, reduce production cost, it is also used as commodity selling direct access economic benefit, realize huge leap forward of the xylose alcohol production by waste sludge discharge amount high to zero-emission high-volume, both environmental protection pressure is alleviated, economic benefit is created again, meet the requirement of national energy-saving emission reduction and sustainable development.
Description
Technical field
The invention belongs to technical field of functional sugar production, and in particular to a kind of corncob hydrolysis residue enzymolysis residue prepares wood
The method of production of sugar polyol activated carbon.
Technical background
Xylitol is obtained through operations such as hydrolysis, purification, hydrogenation by corncob, in xylose alcohol production, corncob hydrolysis
The comprehensive utilization of slag is always the problem of xylitol industry.At present, domestic xylitol production industry produces a large amount of residues per annual meeting,
If being directly discharged in environment, it will cause very big pollution and waste.Because its main component be cellulose and lignin, so
Some enterprises are used for producing the products such as cellulose ethanol, Pfansteihl, and 50% remnants can be also produced in such product process is produced
Thing.Therefore comprehensive utilization corncob hydrolysis waste residue, by deep processing, so that it becomes the new product of high added value, with huge
Economic worth, environmental value and far-reaching social effect.
Present xylose alcohol production special-purpose activated charcoal price is up to 9000 yuan/ton, often produces 1 ton of xylitol consumption activated carbon
150kg, converts into 1350 yuan of RMB.If corncob hydrolysis residue can be produced into activated carbon, itself production can be not only met
Need, reduce production cost, be also used as commodity selling and directly increase economic efficiency, and realize xylose alcohol production by height
Xylitol industry epoch-making great change of the waste sludge discharge amount to zero-emission high-volume.The energy-saving and emission-reduction political affairs that country advocates so not only are complied with
Plan, and huge economic and social benefit can be created.
At present, the domestic research for thering are furfural dregs to produce activated carbon report, but on utilizing corncob hydrolysis residue through enzymolysis
The residue gone after cellulose prepares activated carbon, so far it has not been found that any report.
The content of the invention
In order to overcome the deficiencies in the prior art, corn cob residue utilization rate is low in solving the problems, such as xylose production, the present invention
There is provided the technique that a kind of utilization corncob hydrolysis residue prepares activated carbon, it is therefore an objective to solve solid residue in xylose, xylose alcohol production
Effective trans-utilization problem, to reduce the environmental protection pressure of industry, while economic benefit can be created again.
The technical solution adopted in the present invention is to digest residue using corncob hydrolysis residue to prepare xylose alcohol production use
Activated carbon, its processing step is：
1st, cellulose is removed：The moisture in corncob hydrolysis residue is determined, deionized water is added, by weight water：It is dry
Thing=8-12：0.5-1.5 is made into suspension, adds the sodium hydroxide solution of 15-25% by weight, adjusts PH extremely
11-13, after being incubated l_3h under 65_75 °C, adjusts PH to 3-5, and cellulase, speed of agitator are added by 500-3000IU/g
It is 100-360rpm, 30-70h, filtering or centrifugation is incubated under 50-60 °C, obtains the enzymolysis residue based on lignin,
Standby o
2nd, carbonization-activation：The enzymolysis residue based on lignin that step 1 is obtained is dried, by solid-liquid volume ratio
0.5-1.5 ：2-4 adds the phosphoric acid solution that mass fraction is 40%, in 200-800 °C of lower carbonization-activation 20-100min.
3rd, wash：The carbonization-activation thing that step 2 is obtained washs 1030min with 65-80 °C of clear water, to remove residual
Phosphorus, centrifugation or filter, obtain the activated carbon of cleaning.
4th, dries pulverizing：The cleaning action charcoal that step 3 is obtained is dried to tool in 55-65 °C of drying in oven 20-25h
There is good mobility, pulverize, can be sieved according to mesh number requirement, obtain final product xylose alcohol production activated carbon.
The activated carbon prepared with the present invention decolourizes to Corncob hydrolysate, the light transmittance of hydrolyzate before and after contrast decolouring
Value, it is possible to which the performance to activated carbon is evaluated.
The positive effect of the present invention is the effective trans-utilization for solving solid residue in present xylose, xylose alcohol production
Problem, corncob hydrolysis residue is used for produce activated carbon, raw material corncob is fully used, and improves economic benefit, real
Show the epoch-making great change of xylitol industry by waste sludge discharge amount high to zero-emission high-volume of xylose alcohol production, reduce the environmental protection pressure of industry
Power.
Specific embodiment
With reference to specific embodiment, the present invention will be further described.
The basic operation that cellulose is this preparation technology is gone, in specific implementation process, first in measure corncob hydrolysis residue
Moisture, add deionized water, by water：Dry matter=10：1 is made into suspension, adds by weight 20% hydrogen
Sodium hydroxide solution, adjusts PH to 12, after being incubated 2h under 70 °C, adjusts PH to 4, and cellulase, stirring are added by 1500IU/g
Rotating speed is 200rpm, and 50h, filtering or centrifugation are incubated under 55 °C, and the enzymolysis corncob hydrolysis residue residue of acquisition can be used as
The raw material of activated carbon is produced, it is standby.
Embodiment 1
The enzymolysis corn wheat bran residue 50g of cellulose is removed, in addition 200ml beakers, by solid-liquid volume ratio 1： 3
The phosphoric acid solution for adding mass fraction to be 40%, in 400 °C of lower carbonization-activation 120min in Muffle furnace, is washed with 75 °C of clear water
20min is washed, after drying 24h in 60 °C of baking ovens, is pulverized, sieved, obtain activated carbon.Contain by Corncob hydrolysate dry
1% addition activated carbon of amount, is decolourized, and its light transmittance can be made to increase to 62% or so from 7%.
Embodiment 2
The enzymolysis corn wheat bran residue 60g of cellulose is removed, in addition 200ml beakers, by body solid-liquid volume ratio
1 ：1 addition mass fraction is 60% phosphoric acid solution, clear with 75 °C in 500 °C of lower carbonization-activation 80min in Muffle furnace
Water washing 20min, after drying 24h in 60 °C of baking ovens, pulverizes, screening, obtains activated carbon.It is dry by Corncob hydrolysate
1% addition activated carbon of thing content, is decolourized, and its light transmittance can be made to increase to 66% or so from 7%.
Embodiment 3
The enzymolysis corn wheat bran residue 100g of cellulose is removed, in addition 200ml beakers, by body solid-liquid volume ratio
1 ：2 addition mass fractions are 85% phosphoric acid solution, clear with 75 °C in 450 °C of lower carbonization-activation 80min in Muffle furnace
Water washing lOmin, after drying 24h in 60 °C of baking ovens, pulverizes, screening, obtains activated carbon.It is dry by Corncob hydrolysate
1% addition activated carbon of thing content, is decolourized, and its light transmittance can be made to increase to 75% or so from 7%.
Claims (1)
1. a kind of utilization corncob hydrolysis residue prepares the technique of activated carbon, it is characterized in that the preparation technology utilizes corncob hydrolysis residue
Digest residue to prepare xylose alcohol production activated carbon, its processing step is：
Remove cellulose：The moisture in corncob hydrolysis residue is determined, deionized water is added, by water：Dry matter=
8-12 ：0.5-1. 5 is made into suspension, adds the sodium hydroxide solution of 15-25% by weight, adjusts PH to 11-13,
After being incubated l-3h under 65-75 °C, PH to 3-5 is adjusted, by 500-3000IU/g addition cellulases, speed of agitator is
100-360rpm, is incubated 30-70h, filtering or centrifugation under 50-60 °C, obtains the enzymolysis residue based on lignin, standby
With；
Carbonization-activation：The enzymolysis residue based on lignin that step 1 is obtained is dried, by body solid-liquid volume ratio
0.5-1.5 ：2-4 adds the phosphoric acid solution that mass fraction is 40%, in 200-800 °C of lower carbonization-activation 20-lOOmin;
Washing：The carbonization-activation thing that step 2 is obtained washs 10-30min with 65-80 °C of clear water, to remove residual
P elements, centrifugation or filtering, obtain the activated carbon of cleaning；
Dries pulverizing：The activated carbon of the cleaning that step 3 is obtained is dried extremely after 55-65 °C of drying in oven 20-25h
With good mobility, pulverize, sieved according to mesh number requirement, obtain final product xylose alcohol production activated carbon.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151013A (en) * | 2017-07-12 | 2017-09-12 | 吉林大学 | A kind of method that utilization resinol C prepares porous carbon |
| CN109107532A (en) * | 2018-09-05 | 2019-01-01 | 哈尔滨工业大学 | Based on the modified charcoal and the preparation method and application thereof of enzymatic fermentation |
| WO2020010750A1 (en) * | 2018-07-09 | 2020-01-16 | 华南理工大学 | Nitrogen-doped 3d porous carbon material, preparation method therefor and use thereof |
| CN111747408A (en) * | 2020-07-06 | 2020-10-09 | 南京林业大学 | Processing technology for improving quality of activated carbon through sulfuric acid pretreatment |
-
2015
- 2015-11-30 CN CN201510857749.2A patent/CN106811497A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151013A (en) * | 2017-07-12 | 2017-09-12 | 吉林大学 | A kind of method that utilization resinol C prepares porous carbon |
| WO2020010750A1 (en) * | 2018-07-09 | 2020-01-16 | 华南理工大学 | Nitrogen-doped 3d porous carbon material, preparation method therefor and use thereof |
| CN109107532A (en) * | 2018-09-05 | 2019-01-01 | 哈尔滨工业大学 | Based on the modified charcoal and the preparation method and application thereof of enzymatic fermentation |
| CN109107532B (en) * | 2018-09-05 | 2021-07-16 | 哈尔滨工业大学 | Biochar based on enzymatic fermentation modification and preparation method and application thereof |
| CN111747408A (en) * | 2020-07-06 | 2020-10-09 | 南京林业大学 | Processing technology for improving quality of activated carbon through sulfuric acid pretreatment |
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Application publication date: 20170609 |
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