CN102382908A - Method for preparing saccharide by decomposing cellulose through plasma electrolysis - Google Patents
Method for preparing saccharide by decomposing cellulose through plasma electrolysis Download PDFInfo
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- CN102382908A CN102382908A CN2011102264551A CN201110226455A CN102382908A CN 102382908 A CN102382908 A CN 102382908A CN 2011102264551 A CN2011102264551 A CN 2011102264551A CN 201110226455 A CN201110226455 A CN 201110226455A CN 102382908 A CN102382908 A CN 102382908A
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Abstract
The invention relates to a method for preparing saccharide by decomposing cellulose through plasma electrolysis, which comprises the following specific steps: (1) adding water into smashed cellulose raw material to prepare mixed liquor with the cellulose mass concentration of 1-20%; (2) adding electrolyte into the cellulose and water mixed liquor to prepare a cellulose electrolyte solution with the conductivity of 0.03-0.1 S.m<-1>; (3) carrying out plasma electrolysis on the electrolyte solution at the electrolysis voltage of 300-1500 V; and (4) separating and purifying the electrolyzed mixture to obtain the saccharide. The method disclosed by the invention overcomes the defects of large acid consumption and long process in the common acid hydrolysis technology. The saccharide prepared in the method has high quantity, does not need any catalyst and has no pollution on the environment, and when being treated, cellulose biomass is directly hydrolyzed without pretreatment, so the production process is simplified, and the cost is low.
Description
Technical field
The present invention relates to a kind of Mierocrystalline cellulose decomposition technique, specifically be meant and a kind ofly glycosidic link in the Mierocrystalline cellulose interrupted, produce the method for oligose or monose with plasma electrolysis mode decomposition of cellulose.
Background of invention
The Mierocrystalline cellulose source is wide, and aboundresources is the following important potential development object that oil is done fuel and chemical that substitutes.And Mierocrystalline cellulose is an important technical of cellulose utilization through physico-chemical process conversion hydrolysis sugaring.At present, cellulose hydrolysis is that the main method of monose has acid-hydrolysis method, enzyme hydrolysis method and supercritical water solution.Wherein acid-hydrolysis method comprises two kinds of diluted acid (0.5%～2%) and concentrated acid hydrolysis again.Dilute acid hydrolysis helps that the sugar amount that hydrolysis of hemicellulose obtains is high, the catalyzer cost is low, be easy to neutralization; But the temperature that reaction needed is higher; Hydrolysis of hemicellulose product five-carbon sugar is prone to further degraded (furfural) under catalysis; The Mierocrystalline cellulose sugar yield is low, is merely 50%～60% of theoretical value, and follows reaction product to degrade.Handle Mierocrystalline cellulose with concentrated acid, carry out at normal temperatures and pressures, Mierocrystalline cellulose is easy to hydrolysis, and sugar yield is high, and by product is few, technical maturity.But concentrated acid corrodibility is strong, reclaims difficulty, produces a large amount of sour waste water.Enzyme hydrolysis method is for acid-hydrolysis method, and respond mild condition, product of its advantage has no side effect, and degradation rate is high, does not need acid recovery; Shortcoming is that speed is slow, the operation separating technology is complicated, the enzyme production cost is too high.The supercritical water solution has its outstanding feature to be that hydrolysis rate is fast, the hydrolysis productive rate is high, can not need any catalyzer, environmentally safe, and when handling cellulose series biomass, can directly be hydrolyzed without pre-treatment, thereby simplifies technology; But this technology is being applied to be faced with very big difficulty aspect the suitability for industrialized production, mainly is the design (HTHP, sample introduction speed are fast, cooling time) of production equipment, the reduction of energy consumption, the problems such as control of reaction conditions.
Summary of the invention
Patent of the present invention proposes a kind of method of plasma electrolysis degraded cellulose to the problems referred to above that cellulose degradation exists.The present invention is by plasma electrolysis technology, the strong oxidizing property group actings in conjunction such as OH radical that utilize the high energy particle that produces in the plasma electrolysis process and water molecules to decompose to produce on the glycosidic link of cellulosic molecule, make its decompose produce sugared.Plasma electrolysis process electrolyte concentration is merely 0.01%～0.1%, and ionogen can be that acid can be alkali also, and it is big to have overcome in the customary acid technology for hydrolyzing acid consumption, the shortcoming that the process treatment process is long.
The present invention realizes through following technical scheme:
A kind of plasma electrolysis decomposition of cellulose prepares the method for sugar, and concrete steps are following:
(1) cellulosic material is added water after crushed, be made into Mierocrystalline cellulose quality concentration and be 1～20% mixed solution;
(2) in above-mentioned Mierocrystalline cellulose water mixed liquid, add ionogen, being made into specific conductivity is 0.03～0.1S.m
-1Mierocrystalline cellulose electrolytic solution;
(3) above-mentioned electrolytic solution is carried out plasma electrolysis, electrolysis voltage is 300～1500V;
(4) contain Mierocrystalline cellulose in the mixture after the electrolysis and decompose the sugar that produces, purify, obtain sugar (monose and oligose) through separating.
Preferably, the said ionogen of step (2) is acid, alkali or the salt that solubleness is bigger in water.
Preferably, said ionogen is KOH, H
2SO
4Or FeCl
2
Preferably, it is characterized in that the said electrolysis time of step (3) is 10～120 minutes.
Preferably, the said cellulosic material of step (1) refers to the high-purity cellulose that biomass, the waste paper of cellulose are opened or warp processing obtains.
Preferably, the biomass of said cellulose are stalk, and said high-purity cellulose is a Microcrystalline Cellulose.
Preferably, said cellulosic material particle is 100～1000 purpose particles.
Said plasma electrolysis comprises anode plasma electrolysis and cathode plasma electrolysis: when positive electrode electrolysis area during less than the catholyte area, glow discharge plasma generally produces at anode, is anode glow discharge electrolysis; When catholyte area during less than the anode electrode area, glow discharge plasma generally produces at negative electrode, is the cathode glow discharging electrolysis.
The present invention compared with prior art has following advantage:
The present invention is by plasma electrolysis technology, the strong oxidizing property group actings in conjunction such as OH radical that utilize the high energy particle that produces in the plasma electrolysis process and water molecules to decompose to produce on the glycosidic link of cellulosic molecule, make its decompose produce sugared.Plasma electrolysis process electrolyte concentration is merely 0.01%～0.1%, and ionogen can be that acid can be alkali also, and it is big to have overcome in the customary acid technology for hydrolyzing acid consumption, the shortcoming that the process treatment process is long.Sugar amount that this method makes is high, do not need any catalyzer, environmentally safe, and when handling cellulose series biomass, can directly be hydrolyzed without pre-treatment, thereby simplifies production technique, cost is low.
Description of drawings
Fig. 1 is a plasma electrolysis decomposition of cellulose sugar refining technology route;
Fig. 2 is the performance liquid spectrogram of electrolytic solution.
Embodiment
Through following embodiment and accompanying drawing the present invention is made further detailed description, but embodiments of the invention are not limited only to this.
Embodiment 1
With general electrolyzer is the plasma electrolysis reactor drum.
Step 1, be raw material, Microcrystalline Cellulose is become to contain 10% cellulosic mixed solution with water by 1: 9 mixed of mass ratio with the Microcrystalline Cellulose;
Step 2, the KOH solid is added in the above-mentioned mixed solution, being mixed with specific conductivity is 0.05S.m
-1Mierocrystalline cellulose electrolytic solution;
Step 3, above-mentioned Mierocrystalline cellulose electrolytic solution is carried out the cathode plasma electrolysis under 800V voltage; Handled 1 hour; High energy particle that produces in the electrolytic process and water molecules decompose the strong oxidizing property group actings in conjunction such as OH radical of generation on the glycosidic link of cellulosic molecule; Mierocrystalline cellulose is decomposed; Obtain containing the solution of 1.7% glucose, 0.2% seminose, 0.2% wood sugar and 0.8% pectinose, Fig. 2 is that 23.2 minutes material peak is a glucose peaks for the performance liquid spectrogram RT of electrolytic solution;
Step 4, with above-mentioned sugary soln separation and purification, obtain purer sugar.
Embodiment 2
Step 1, be raw material, straw powder be broken into 150 purpose fine powders, and become to contain 20% cellulosic mixed solution by 1: 4 mixed of mass ratio with water with the stalk;
Step 2, with FeCl
2Solid adds in the above-mentioned mixed solution, and being mixed with specific conductivity is 0.1S.m
-1Mierocrystalline cellulose electrolytic solution;
Step 3, above-mentioned Mierocrystalline cellulose electrolytic solution is carried out the anode plasma electrolysis under 700V voltage; Handled 2 hours; High energy particle that produces in the electrolytic process and water molecules decompose the strong oxidizing property group actings in conjunction such as OH radical of generation on the glycosidic link of cellulosic molecule; Mierocrystalline cellulose is decomposed, obtain containing the solution of 0.7% glucose, 0.02% seminose, 0.03% wood sugar and 0.3% pectinose;
Step 4, with above-mentioned sugary soln separation and purification, obtain purer sugar.
Embodiment 3
Step 1, be raw material, straw powder be broken into 100 purpose fine powders, and become to contain 20% cellulosic mixed solution by 1: 4 mixed of mass ratio with water with the stalk;
Step 2, with H
2SO
4Solution adds in the above-mentioned mixed solution, and being mixed with specific conductivity is 0.05S.m
-1Mierocrystalline cellulose electrolytic solution;
Step 3, above-mentioned Mierocrystalline cellulose electrolytic solution is carried out the anode plasma electrolysis under 1000V voltage; Handled 2 hours; High energy particle that produces in the electrolytic process and water molecules decompose the strong oxidizing property group actings in conjunction such as OH radical of generation on the glycosidic link of cellulosic molecule; Mierocrystalline cellulose is decomposed, obtain containing the solution of 0.97% glucose, 0.012% seminose, 0.019% wood sugar and 0.41% pectinose;
Step 4, with above-mentioned sugary soln separation and purification, obtain purer sugar.
Claims (7)
1. a plasma electrolysis decomposition of cellulose prepares sugared method, it is characterized in that concrete steps are following:
(1) cellulosic material is added water after crushed, be made into Mierocrystalline cellulose quality concentration and be 1～20% mixed solution;
(2) in above-mentioned Mierocrystalline cellulose water mixed liquid, add ionogen, being made into specific conductivity is 0.03～0.1S.m
-1Mierocrystalline cellulose electrolytic solution;
(3) above-mentioned electrolytic solution is carried out plasma electrolysis, electrolysis voltage is 300～1500V;
(4) mixture after the electrolysis is purified through separating, and obtains sugar.
2. method according to claim 1 is characterized in that, the said ionogen of step (2) is acid, alkali or the salt that solubleness is bigger in water.
3. method according to claim 2 is characterized in that, said ionogen is KOH, H
2SO
4Or FeCl
2
4. according to claim 1 or 2 or 3 described methods, it is characterized in that the said electrolysis time of step (3) is 10～120 minutes.
5. method according to claim 4 is characterized in that, the said cellulosic material of step (1) refers to the high-purity cellulose that biomass, the waste paper of cellulose are opened or warp processing obtains.
6. method according to claim 5 is characterized in that, the biomass of said cellulose are stalk, and said high-purity cellulose is a Microcrystalline Cellulose.
7. method according to claim 5 is characterized in that, said cellulosic material particle is 100～1000 purpose particles.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8669738B1 (en) | 2012-12-26 | 2014-03-11 | Colorado Energy Research Technologies, LLC | Power recovery controller |
| US8917055B2 (en) | 2012-12-26 | 2014-12-23 | Colorado Energy Research Technologies, LLC | Power recovery controller |
| US9325188B2 (en) | 2012-12-26 | 2016-04-26 | Colorado Energy Research Technologies, LLC | Power recovery controller |
| US9428069B2 (en) | 2012-12-26 | 2016-08-30 | Colorado Energy Research Technologies, LLC | Systems and methods for efficiently charging power recovery controller |
| CN106333215A (en) * | 2016-10-15 | 2017-01-18 | 滁州学院 | Method for improving pathogenic bacterium inhibit effect of functional oligosaccharide based on cold-source plasma |
| CN106566000A (en) * | 2016-11-09 | 2017-04-19 | 广西师范学院 | Disposable degradable dish and preparation method therefor |
| CN106939428A (en) * | 2017-04-18 | 2017-07-11 | 河南科技大学 | It is a kind of to be electrolysed the method that lignocellulosic prepares reduced sugar |
| CN107058424A (en) * | 2016-04-13 | 2017-08-18 | 江苏师范大学 | A kind of lignocellulose pretreatment method |
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| CN101139725A (en) * | 2007-08-16 | 2008-03-12 | 华南理工大学 | Method for preparing formaldehyde by glow discharge methanol electroanalysis |
Non-Patent Citations (2)
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8669738B1 (en) | 2012-12-26 | 2014-03-11 | Colorado Energy Research Technologies, LLC | Power recovery controller |
| US8917055B2 (en) | 2012-12-26 | 2014-12-23 | Colorado Energy Research Technologies, LLC | Power recovery controller |
| US9325188B2 (en) | 2012-12-26 | 2016-04-26 | Colorado Energy Research Technologies, LLC | Power recovery controller |
| US9428069B2 (en) | 2012-12-26 | 2016-08-30 | Colorado Energy Research Technologies, LLC | Systems and methods for efficiently charging power recovery controller |
| US9438060B2 (en) | 2012-12-26 | 2016-09-06 | Colorado Energy Research Technologies, LLC | Power recovery controller |
| CN107058424A (en) * | 2016-04-13 | 2017-08-18 | 江苏师范大学 | A kind of lignocellulose pretreatment method |
| CN106333215A (en) * | 2016-10-15 | 2017-01-18 | 滁州学院 | Method for improving pathogenic bacterium inhibit effect of functional oligosaccharide based on cold-source plasma |
| CN106566000A (en) * | 2016-11-09 | 2017-04-19 | 广西师范学院 | Disposable degradable dish and preparation method therefor |
| CN106939428A (en) * | 2017-04-18 | 2017-07-11 | 河南科技大学 | It is a kind of to be electrolysed the method that lignocellulosic prepares reduced sugar |
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|---|---|
| CN102382908B (en) | 2014-05-07 |
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