AU2021102454A4 - Decolorization and Desalination Method of Xylose Hydrolysate Based on Simulated Moving Bed Chromatography - Google Patents
Decolorization and Desalination Method of Xylose Hydrolysate Based on Simulated Moving Bed Chromatography Download PDFInfo
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- AU2021102454A4 AU2021102454A4 AU2021102454A AU2021102454A AU2021102454A4 AU 2021102454 A4 AU2021102454 A4 AU 2021102454A4 AU 2021102454 A AU2021102454 A AU 2021102454A AU 2021102454 A AU2021102454 A AU 2021102454A AU 2021102454 A4 AU2021102454 A4 AU 2021102454A4
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- eluent
- hydrolysate
- ssmb
- xylose
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Classifications
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- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
- C13K13/00—Sugars not otherwise provided for in this class
- C13K13/002—Xylose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/18—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns
- B01D15/1814—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to flow patterns recycling of the fraction to be distributed
- B01D15/1821—Simulated moving beds
- B01D15/185—Simulated moving beds characterized by the components to be separated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/04—Processes using organic exchangers
- B01J39/05—Processes using organic exchangers in the strongly acidic form
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Sustainable Development (AREA)
- Analytical Chemistry (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The method of decolorization and desalination of xylose hydrolysate disclosed in the present
invention adopts a sequential simulated mobile bed (SSMB) chromatographic separation
apparatus and takes pre-treated corn straw or corn cob hydrolysate as raw material. Further,
deionized water is used as the eluent, the separation temperature is 60-70°C and a hydrogen
type strong-acid cationic resin is used as the separation resin to remove most of the pigments
and salts and to achieve a low rate of sugar loss. The whole process has low running costs and
removes most of the pigments and salts, reducing the cost of decolorization and desalination
of the hydrolysate, which in turn significantly reduces the overall cost of xylose production.
The process is also simple to operate and can be used for continuous automated production,
significantly increasing production efficiency.
Description
Decolorization and Desalination Method of Xylose Hydrolysate Based on Simulated
Moving Bed Chromatography
The invention relates to a SSMB chromatographic separation technology, in particular to
a decolorization and desalination method of xylose hydrolysate based on simulated
moving bed (SMB) chromatography.
Xylose is made from corn cobs or corn straws through a process of hydrolysis,
decolorization, desalination with ion exchange, evaporation, secondary desalination with
ion exchange, concentration, crystallization, centrifugation and drying, etc. The
decolorization and desalination of the hydrolysate directly affects the quality of the
product. The current xylose hydrolysate often uses activated carbon decolorization and
ion exchange desalination, which accounts for around 40% of the total production cost
and requires a large amount of acid and alkali consumption, causing environmental
pollution and increasing the cost of subsequent wastewater treatment. This invention uses
internationally advanced SSMB chromatography to treat xylose hydrolysate. Using
concentrated hydrolysate as raw material and deionized water as eluent, this technology
uses a six-column process to remove pigments and salts from xylose hydrolysate with a
removal rate of over 80%, while ensuring xylose yield. While significantly reducing the
amount of activated carbon, hydrochloric acid and caustic soda, the production cost of
xylose can be significantly reduced and continuous, automated production can be
achieved, which will certainly promote the development of the xylose industry. The
technology can also be applied to desalination and decolorization processes in other industries to improve the production efficiency of other products. The project results are therefore high-quality intellectual property.
SMB is an advanced and efficient separation technique that has been instrumental in the
development of modern functional sugars and functional sugar alcohols, glucose and
sucrose as well as herbal medicines. The most advanced form of SMB chromatography
internationally is SSMB, which is much more advanced than conventional SMB and
features a reduced number of separation columns, 30%-50% lower running costs and
%-40% lower solvent usage than conventional chromatographic separation apparatus.
It offers high separability, high recovery, high efficiency, low cost and high stability on
the basis of guaranteed high purity.
The present invention aims at solving the problem of difficult removal of pigments and
salts from xylose hydrolysate with high contamination, and investigates a method for
decolorization and desalination of xylose hydrolysate based on SMB chromatography.
The process described in this method has low operating costs, high removal rates of
pigments and salts, low loss of xylose, and can significantly reduce the amount of
activated carbon, hydrochloric acid and caustic soda used in the subsequent
decolorization and desalination process. Besides, it can significantly reduce the cost of
xylose production, and achieve continuous and automated production, which will
certainly promote the development of the xylose industry.
A method for decolorization and desalination of xylose hydrolysate based on SMB
chromatography uses the xylose hydrolysate, after neutralization and concentration, as raw material and SSMB chromatography is adopted to remove pigments and salts from the hydrolysate to obtain a preliminary purified xylose syrup.
Wherein, the adsorbent in SSMB chromatographic separation can be any of resin ZG
106H+, UBK530 H+, UBK550 H+, 99 H+-310 or 99 H'-320; the eluent is water; the
SSMB chromatographic separation apparatus comprises 6 columns with 2 inlets and 2
outlets; and the separation temperature is 60-70°C.
The process steps are as follows.
(a) Blending of the feed syrup. The neutralized xylose hydrolysate is blended to a
concentration of 30-50%;
(b) Filtration. The hydrolysate obtained in step (a) is filtered through a micron filter to
produce a clarified liquid free of visible impurities.
(c) SSMB chromatographic separation. The hydrolysate obtained above is separated by a
SSMB chromatographic separation apparatus. The SSMB chromatography apparatus
used in the present invention has 6 chromatographic columns with the following three
steps at column 1.
Step a Step b Step C D (Eluent) F (Hydrolysate) D (Eluent)
1 2 1 2 3 4 5 6- 1 2 3 4 5 6
AD BD (Pigment and salt components) BD (Pigment and salt components) (syrup components)
Step a. Simultaneous feeding of material, eluent and discharge, a step also known as all
in and all-out. Specifically, column 1 feeds the eluent, with components A (the syrup)
coming out of the lower end of column 1; column 4 feeds the raw material, with the other part of components B (the pigment and salt) coming out of the lower end of column 5.
The feeding amount of eluent is between 3% and 15% of the column volume and the
amount of raw material is between 5% and 10% of the column volume.
Step b. No material in or out and large circulation is carried out. The flow direction is
from column 1 to column 6, with a circulation volume of 25% to 40% of the column
volume.
Step c. This step is a small cycle, where only the eluent- deionized water is fed. Column 1
is fed with eluent and a portion of components B (pigment and salt) comes out from the
lower end of column 5, wherein the feeding amount of eluent is between 3% and 15% of
the column volume.
At the end of the operation of column 1, the above three steps are repeated in sequence,
except that in this second and third step the inlet and outlet positions are moved to the
next column in the direction of column 1 to column 6, and this procedure is followed in
all subsequent operations.
(d) Concentration. The concentration of the component A solution made in Step c is
concentrated to 2 0 -3 0 % and the component B solution is concentrated and used for
fertilizer production.
The invention uses SSMB chromatography to remove pigments and salts from xylose
hydrolysate and separates to obtain component A solution and component B solution,
with over 80% removal of pigments and salts and less than 5% loss of syrup, wherein the
concentration of component A is 15%-30%. Thereby, continuous and industrial
production can be achieved.
Figure 1 shows the entire process flow described in Embodiments 1 to 4.
Embodiment 1
The method of the present invention for the removal of pigments and salts from xylose
hydrolysate by SSMB chromatography is achieved by the following steps.
(a) Blending of the feed syrup. The neutralized xylose hydrolysate is blended to a
concentration of 40%;
(b) Filtration. The hydrolysate obtained in step (a) is filtered through a micron filter to
produce a clarified liquid free of visible impurities.
(c) SSMB chromatographic separation. The hydrolysate obtained above is separated by a
SSMB chromatographic separation apparatus. The SSMB chromatography apparatus
used in the present invention has 6 chromatographic columns with the following three
steps at column 1.
Step a. Simultaneous feeding of material, eluent and discharge, a step also known as all
in and all-out. Specifically, column 1 feeds the eluent, with components A (the syrup)
coming out of the lower end of column 1; column 4 feeds the raw material, with the other
part of components B (the pigment and salt) coming out of the lower end of column 5.
The feeding amount of eluent is 10% of the column volume and the amount of raw
material is 5% of the column volume.
Step b. No material in or out and large circulation is carried out. The flow direction is
from column I to column 6, with a circulation volume of 30% of the column volume.
Step c. This step is a small cycle, where only the eluent- deionized water is fed. Column 1
is fed with eluent and a portion of components B (pigment and salt) comes out from the
lower end of column 5, wherein the feeding amount of eluent is 10% of the column
volume.
(d) Concentration. The concentration of the component A solution made in Step c is
concentrated to 20% and the component B solution is concentrated and used for fertilizer
production.
Wherein, the adsorbent in SSMB chromatographic separation is resin ZG-106H+; the
eluent is water; the SSMB chromatographic separation apparatus comprises 6 columns
with 2 inlets and 2 outlets; and the separation temperature is 60°C.
The invention uses SSMB chromatography to remove pigments and salts from xylose
hydrolysate. Wherein, the separation resulted in a solution concentration of 22.5% of
component A, with 85.7% removal of pigments and salts and 4.6% loss of sugars.
Embodiment 2
The method of the present invention for the removal of pigments and salts from xylose
hydrolysate by SSMB chromatography is achieved by the following steps.
(a) Blending of the feed syrup. The neutralized xylose hydrolysate is blended to a
concentration of 40%;
(b) Filtration. The hydrolysate obtained in step (a) is filtered through a micron filter to
produce a clarified liquid free of visible impurities.
(c) SSMB chromatographic separation. The hydrolysate obtained above is separated by a
SSMB chromatographic separation apparatus. The SSMB chromatography apparatus used in the present invention has 6 chromatographic columns with the following three steps at column 1.
Step a. Simultaneous feeding of material, eluent and discharge, a step also known as all
in and all-out. Specifically, column 1 feeds the eluent, with components A (the syrup)
coming out of the lower end of column 1; column 4 feeds the raw material, with the other
part of components B (the pigment and salt) coming out of the lower end of column 5.
The feeding amount of eluent is 15% of the column volume and the amount of raw
material is 5% of the column volume.
Step b. No material in or out and large circulation is carried out. The flow direction is
from column I to column 6, with a circulation volume of 25% of the column volume.
Step c. This step is a small cycle, where only the eluent- deionized water is fed. Column 1
is fed with eluent and a portion of components B (pigment and salt) comes out from the
lower end of column 5, wherein the feeding amount of eluent is 15% of the column
volume.
(d) Concentration. The concentration of the component A solution made in Step c is
concentrated to 25% and the component B solution is concentrated and used for fertilizer
production.
Wherein, the adsorbent in SSMB chromatographic separation is resin 99H+-310; the
eluent is water; the SSMB chromatographic separation apparatus comprises 6 columns
with 2 inlets and 2 outlets; and the separation temperature is 60°C.
The invention uses SSMB chromatography to remove pigments and salts from xylose
hydrolysate. Wherein, the separation resulted in a solution concentration of 20.5% of
component A, with 80.7% removal of pigments and salts and 3.2% loss of sugars.
Embodiment 3
The method of the present invention for the removal of pigments and salts from xylose
hydrolysate by SSMB chromatography is achieved by the following steps.
(a) Blending of the feed syrup. The neutralized xylose hydrolysate is blended to a
concentration of 50%;
(b) Filtration. The hydrolysate obtained in step (a) is filtered through a micron filter to
produce a clarified liquid free of visible impurities.
(c) SSMB chromatographic separation. The hydrolysate obtained above is separated by a
SSMB chromatographic separation apparatus. The SSMB chromatography apparatus
used in the present invention has 6 chromatographic columns with the following three
steps at column 1.
Step a. Simultaneous feeding of material, eluent and discharge, a step also known as all
in and all-out. Specifically, column 1 feeds the eluent, with components A (the syrup)
coming out of the lower end of column 1; column 4 feeds the raw material, with the other
part of components B (the pigment and salt) coming out of the lower end of column 5.
The feeding amount of eluent is 15% of the column volume and the amount of raw
material is 10% of the column volume.
Step b. No material in or out and large circulation is carried out. The flow direction is
from column I to column 6, with a circulation volume of 30% of the column volume.
Step c. This step is a small cycle, where only the eluent- deionized water is fed. Column 1
is fed with eluent and a portion of components B (pigment and salt) comes out from the
lower end of column 5, wherein the feeding amount of eluent is 15% of the column
volume.
(d) Concentration. The concentration of the component A solution made in Step c is
concentrated to 25% and the component B solution is concentrated and used for fertilizer
production.
Wherein, the adsorbent in SSMB chromatographic separation is resin 99H'-310; the
eluent is water; the SSMB chromatographic separation apparatus comprises 6 columns
with 2 inlets and 2 outlets; and the separation temperature is 65°C.
The invention uses SSMB chromatography to remove pigments and salts from xylose
hydrolysate. Wherein, the separation resulted in a solution concentration of 22.3% of
component A, with 81.5% removal of pigments and salts and 4.8% loss of sugars.
Embodiment 4
The method of the present invention for the removal of pigments and salts from xylose
hydrolysate by SSMB chromatography is achieved by the following steps.
(a) Blending of the feed syrup. The neutralized xylose hydrolysate is blended to a
concentration of 30%;
(b) Filtration. The hydrolysate obtained in step (a) is filtered through a micron filter to
produce a clarified liquid free of visible impurities.
(c) SSMB chromatographic separation. The hydrolysate obtained above is separated by a
SSMB chromatographic separation apparatus. The SSMB chromatography apparatus
used in the present invention has 6 chromatographic columns with the following three
steps at column 1.
Step a. Simultaneous feeding of material, eluent and discharge, a step also known as all
in and all-out. Specifically, column 1 feeds the eluent, with components A (the syrup)
coming out of the lower end of column 1; column 4 feeds the raw material, with the other part of components B (the pigment and salt) coming out of the lower end of column 5.
The feeding amount of eluent is 10% of the column volume and the amount of raw
material is 8% of the column volume.
Step b. No material in or out and large circulation is carried out. The flow direction is
from column I to column 6, with a circulation volume of 35% of the column volume.
Step c. This step is a small cycle, where only the eluent- deionized water is fed. Column 1
is fed with eluent and a portion of components B (pigment and salt) comes out from the
lower end of column 5, wherein the feeding amount of eluent is 10% of the column
volume.
(d) Concentration. The concentration of the component A solution made in Step c is
concentrated to 25% and the component B solution is concentrated and used for fertilizer
production.
Wherein, the adsorbent in SSMB chromatographic separation is resin 99H'-320; the
eluent is water; the SSMB chromatographic separation apparatus comprises 6 columns
with 2 inlets and 2 outlets; and the separation temperature is 65°C.
The invention uses SSMB chromatography to remove pigments and salts from xylose
hydrolysate. Wherein, the separation resulted in a solution concentration of 16.6% of
component A, with 86.2% removal of pigments and salts and 4.7% loss of sugars.
The core technology of the invention is SSMB chromatography for the removal of
pigments and salts from xylose hydrolysates, which can remove more than 80% of the
pigments and salts with a sugar loss of less than 5%. This process not only ensures the
removal of pigments and salts, but also ensures a low sugar loss rate. Besides, it has distinctive features in terms of overall reduction in the cost of xylose production and simplicity of process steps.
The above is only a better embodiment of the present invention and is not a limitation of
the invention in any form. Although the invention has been disclosed with better
embodiments as above, it is not intended to limit the invention, and any person skilled in
the field can make some changes or modify the technical contents revealed above into
equivalent embodiments without departing from the technical solution of the invention,
but any simple modification, equivalent replacement and improvement of the above
embodiments without departing from the technical solution of the invention, within the
spirit and principles of the present invention, are still within the protection scope of the
technical solution of the present invention.
Claims (3)
1. A method for decolorization and desalination of xylose hydrolysate based on SMB
chromatography, characterized in that the xylose hydrolysate, after neutralization and
concentration, is used as raw material and SSMB chromatography is adopted to remove
pigments and salts from the hydrolysate to obtain a preliminary purified xylose syrup,
specifically comprising the following steps.
(a) Blending of the feed syrup. The neutralized xylose hydrolysate is blended to a
concentration of 30-50%;
(b) Filtration. The hydrolysate obtained in step (a) is filtered through a micron filter to
produce a clarified liquid free of visible impurities.
(c) SSMB chromatographic separation. The hydrolysate obtained above is separated by a
SSMB chromatographic separation apparatus. The SSMB chromatography apparatus
used in the present invention has 6 chromatographic columns with the following three
steps at column 1.
Step a Step b Step C
D (Eluent) F (Hydrolysate) D (Eluent)
1 2 1 2 3 4 5 6-+ 1 2 3 4 5 6
AD BD (Pigment and salt components) BD (Pigment and salt components) (syrup components)
Step a. Simultaneous feeding of material, eluent and discharge, a step also known as all
in and all-out. Specifically, column 1 feeds the eluent, with components A (the syrup)
coming out of the lower end of column 1; column 4 feeds the raw material, with the other
part of components B (the pigment and salt) coming out of the lower end of column 5.
The feeding amount of eluent is between 3% and 15% of the column volume and the
amount of raw material is between 5% and 10% of the column volume.
Step b. No material in or out and large circulation is carried out. The flow direction is
from column 1 to column 6, with a circulation volume of 25% to 40% of the column
volume.
Step c. This step is a small cycle, where only the eluent- deionized water is fed. Column 1
is fed with eluent and a portion of components B (pigment and salt) comes out from the
lower end of column 5, wherein the feeding amount of eluent is between 3% and 15% of
the column volume.
At the end of the operation of column 1, the above three steps are repeated in sequence,
except that in this second and third step the inlet and outlet positions are moved to the
next column in the direction of column 1 to column 6, and this procedure is followed in
all subsequent operations.
(d) Concentration. The concentration of the component A solution made in Step c is
concentrated to 2 0 -3 0 % and the component B solution is concentrated and used for
fertilizer production.
The invention uses SSMB chromatography to remove pigments and salts from xylose
hydrolysate and separates to obtain component A solution and component B solution,
with over 80% removal of pigments and salts and less than 5% loss of syrup, wherein the
concentration of component A is 15%-30%. Thereby, continuous and industrial
production can be achieved.
2. The decolorization and desalination method of xylose hydrolysate based on SSMB
chromatography as stated in Claim 1, characterized in that in the three steps in (c), the
SSMB chromatographic separation uses a strong-acid cation exchange resin as the
adsorbent; the eluent is water; the SSMB chromatographic separation apparatus
comprises 6 columns with 2 inlets and 2 outlets; and the separation temperature is 60
0 C.
3. In the technique of the present invention for the removal of pigments and salts from
xylose hydrolysates by SSMB chromatography, the adsorbent is a strong-acid cation
exchange resin, which can be any of ZG-106H', UBK530 H', UBK550 H', 99 H'-310 or
99 H+-320.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021102454A AU2021102454A4 (en) | 2021-05-11 | 2021-05-11 | Decolorization and Desalination Method of Xylose Hydrolysate Based on Simulated Moving Bed Chromatography |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021102454A AU2021102454A4 (en) | 2021-05-11 | 2021-05-11 | Decolorization and Desalination Method of Xylose Hydrolysate Based on Simulated Moving Bed Chromatography |
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| AU2021102454A4 true AU2021102454A4 (en) | 2021-07-22 |
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ID=76858432
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276389A (en) * | 2021-11-15 | 2022-04-05 | 欧尚元(天津)有限公司 | Method and system for purifying xylose by valve array type continuous chromatography |
-
2021
- 2021-05-11 AU AU2021102454A patent/AU2021102454A4/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114276389A (en) * | 2021-11-15 | 2022-04-05 | 欧尚元(天津)有限公司 | Method and system for purifying xylose by valve array type continuous chromatography |
| CN114276389B (en) * | 2021-11-15 | 2023-11-07 | 欧尚元智能装备有限公司 | Method and system for purifying xylose by valve array type continuous chromatography |
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