CN106496364A - A kind of water-saving method for extracting agar production process from Gracilaria tenuistipitata - Google Patents
A kind of water-saving method for extracting agar production process from Gracilaria tenuistipitata Download PDFInfo
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- CN106496364A CN106496364A CN201611007587.4A CN201611007587A CN106496364A CN 106496364 A CN106496364 A CN 106496364A CN 201611007587 A CN201611007587 A CN 201611007587A CN 106496364 A CN106496364 A CN 106496364A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0036—Galactans; Derivatives thereof
- C08B37/0039—Agar; Agarose, i.e. D-galactose, 3,6-anhydro-D-galactose, methylated, sulfated, e.g. from the red algae Gelidium and Gracilaria; Agaropectin; Derivatives thereof, e.g. Sepharose, i.e. crosslinked agarose
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Abstract
The invention provides a kind of water-saving method for extracting agar production process from Gracilaria tenuistipitata.Water-saving method matting after to the lixiviating matting and the bleaching is improved, reducing the number of times of cleaning by way of adopting and adjusting pH value, so as to reduce water consumption, and that reclaims that each matting last time embathes embathes water, for lixiviating matting next time, water-saving result is obvious.
Description
Technical field
The present invention relates to the wastewater treatment in chemical treatment, extracts agar production from Gracilaria tenuistipitata more particularly, to one kind
The water-saving method of process.
Background technology
Alkali process, bleaching from Gracilaria tenuistipitata in the production process of extraction agar, heating put forward the operations such as glue to be needed to consume in a large number
Water, cleaning the two operations after lixiviating cleaning and bleaching particularly after to Gracilaria tenuistipitata alkali process are entirely to produce
In journey, the maximum operation of water consumption, is typically respectively necessary for adding water and embathes 6 ~ 7 times or so.Lack in china natural resources hydropenia and water quality
Under the still severe situation of water, the water consumption of Gracilaria tenuistipitata processing is reduced as far as possible, undoubtedly to environmental conservation and the existence of enterprise, competing
The ability of striving has good meaning.
Content of the invention
It is an object of the invention to provide extracting the water-saving method of agar production process, the water-saving method in a kind of Gracilaria tenuistipitata
Water consumption that can be in effectively save production process.
For solving above-mentioned technical problem, the technical solution used in the present invention is：
A kind of water-saving method for extracting agar production process from Gracilaria tenuistipitata, including scavenger after lixiviating matting, bleaching
Sequence and embathe water recycle operation；
The lixiviating matting is comprised the following steps：Gracilaria tenuistipitata after by alkali process moves and is put in service sink, adds water and embathes, then
Water will be embathed and be discharged into wastewater disposal basin, and complete to embathe operation for 1 time, repeat described in embathe operation 1 ~ 4 time；Add into service sink clear
Water, is adjusted the pH value for embathing water in service sink 6.5 ~ 7.5, maintains the scope of above-mentioned pH value using acid, follow-up in pH stable
Continuous immersion 0.5 ~ 1.0 hour, discharge embathes water to recovery pond, that is, complete Gracilaria tenuistipitata lixiviating matting；
The water that embathes recycles operation to comprise the following steps：The water that embathes in recovery pond is used for lixiviating matting.
The water-saving method cleans the maximum operation of this consumption water for lixiviating and is improved, and adjusts pH value by adopting
Mode to reduce the number of times of cleaning, so as to reduce water consumption, and reclaim that last time embathes embathe water, for next time
Lixiviating matting.
Before pH value is adjusted, the number of repetition of operation is embathed, affect the consumption for adding acid, if embathing the number of times mistake of operation
Few, the pH value for embathing water in service sink is then higher, and the required consumption for adding acid then can be more, and pH value is not easily controlled；If leaching
The number of times for washing operation is excessive, then be unfavorable for economizing on water.It is preferred that in the lixiviating matting, embathing behaviour described in repetition
Make 2 ~ 3 times.
After the bleaching, the consumption water of matting is also larger, further, matting after the bleaching
The method similar to the lixiviating matting is may also be employed, which comprises the following steps：Gracilaria tenuistipitata after to bleaching is put into clearly
In wash pool, add water and embathe, then will embathe water waste discharge pond, complete to embathe operation for 1 time, repeat described in embathe operation 1 ~ 2 time；
Add clear water again into service sink, adjust the pH value that water is embathed in service sink using alkali 6.0 ~ 7.0, maintain above-mentioned pH value
Scope, continues immersion 1.0 ~ 2.0 hours after pH stable, and discharge embathes water to recovery pond, that is, after completing Gracilaria tenuistipitata bleaching
Matting.
Further, in the lixiviating matting, the hydrochloric acid solution that mass fraction is 2.0 ~ 5.0% is adopted adjusting
The pH value of water is embathed in service sink.
Further, in matting after the bleaching, adopt mass fraction molten for 0.5 ~ 1.0% sodium hydroxide
Liquid embathes the pH value of water to adjust in service sink.
Further, in the lixiviating matting, the method for the maintenance pH value range is：When the pH value for embathing water
During more than 8.0, hydrochloric acid solution is added again.
Further, in matting after the bleaching, the method for the maintenance pH value range is：When embathing water
PH value be less than 6.0 when, again add sodium hydroxide solution.
Further, the water that embathes is recycled in operation, by embathing after water is filtered through nylon screen again in recovery pond
For lixiviating matting.
Further, the water that embathes is recycled in operation, and the water that embathes in recovery pond is used for the lixiviating scavenger
The 1st of sequence, 2 cleanings.
Compared with prior art, the invention has the beneficial effects as follows：
Present invention matting after to the lixiviating matting and the bleaching is improved, and is adjusted by employing
The mode of pH value and reclaims the leaching that each matting last time is embathed to reduce the number of times of cleaning so as to reduce water consumption
Wash water, for lixiviating matting next time, water-saving result is obvious.
Specific embodiment
The present invention is further described by specific examples below, it will be appreciated that described herein be embodied as
Example is only used for the explanation present invention, is not intended to limit the present invention, and can carry out various changing in the range of right of the present invention is limited
Become.
Comparative example
The Gracilaria tenuistipitata after alkali process and after bleaching is cleaned using prior art.
For lixiviating matting, for making the water pH value that embathes after cleaning reach 6.5 ~ 7.5,7 clear water leachings are needed altogether
Wash.
And for matting after bleaching, for making the water pH value that embathes after cleaning reach 6.0 ~ 7.0, need altogether 6
Secondary clear water embathes.
Above-mentioned two matting needs to embathe altogether for 13 times.
Embodiment 1
Using clear water to alkali process after Gracilaria tenuistipitata carry out 4 times and embathe, slow stir after will embathe water and be discharged into wastewater disposal basin.Again plus
Clear water embathes Gracilaria tenuistipitata, now embathes the pH value of water 8.0 ~ 11.0, in service sink a small amount of repeatedly add mass fraction be 2.0 ~
5.0% hydrochloric acid solution, and stir in time, adjustment embathes the pH value of water 6.5 ~ 7.5, after 10 ~ 30 minutes, as the pH for embathing water
When value is slowly increased beyond 8.0,2.0 ~ 5.0% hydrochloric acid solutions are added again, make the pH value for embathing water fall back to 6.5 ~ 7.5, keep
Immersion；Repeat the operation, when in service sink embathe water pH stable 6.5 ~ 7.5 up to 0.5 ~ 1.0 hour after, will embathe water row
Put to recovery pond, complete lixiviating matting.
For matting after bleaching, using prior art, need altogether to embathe for 6 times.
After water in recovery pond is through nylon screen filtration, clean for the lixiviating after next Gracilaria tenuistipitata alkali process.
The present embodiment completes the lixiviating cleaning of Gracilaria tenuistipitata, compared with prior art, section by need to only adding altogether 11 clear water
The water consumption that embathes for 2 times is saved, water-saving rate embathes the response rate 9% of water up to 15%.
The micro- yellow of water is embathed in recovery pond.
Embodiment 2
With recovery pond embathe water to alkali process after Gracilaria tenuistipitata carry out 2 times and embathe, slow stir after will embathe water and be discharged into waste water
Pond, continues plus clear water embathes 2 times and is discharged into wastewater disposal basin.Again plus clear water embathes Gracilaria tenuistipitata, now embathe the pH value of water 8.0 ~
11.0, in service sink, a small amount of repeatedly addition mass fraction is 2.0 ~ 5.0% hydrochloric acid solution, and stirs in time, and water is embathed in adjustment
PH value 6.5 ~ 7.5, after 10 ~ 30 minutes, when the pH value for embathing water is slowly increased beyond 8.0, again add 2.0 ~ 5.0%
Hydrochloric acid solution, makes the pH value for embathing water fall back to 6.5 ~ 7.5, keeps immersion；Repeat the operation, when embathing water pH in service sink
Value stabilization up to after 0.5 ~ 1.0 hour, will embathe water and be emitted into recovery pond, complete lixiviating matting 6.5 ~ 7.5.
For matting after bleaching, using prior art, need altogether to embathe for 6 times.
After water in recovery pond is through nylon screen filtration, clean for the lixiviating after next Gracilaria tenuistipitata alkali process.
The present embodiment completes the lixiviating cleaning of Gracilaria tenuistipitata by need to only adding altogether 9 clear water, compared with prior art, save
The water consumption that embathes for 4 times, water-saving rate embathe the response rate 9% of water up to 31%.
The micro- yellow of water is embathed in recovery pond.
Embodiment 3
With the water of recovery pond to alkali process after Gracilaria tenuistipitata carry out 2 times and embathe, slow stir after will embathe water and be discharged into wastewater disposal basin, after
Continuous plus clear water embathes 2 times and is discharged into wastewater disposal basin, again plus clear water embathes Gracilaria tenuistipitata, now embathes the pH value of water 8.0 ~ 11.0,
To in service sink, a small amount of repeatedly addition mass fraction is 2.0 ~ 5.0% hydrochloric acid solution, and stirs in time, and the pH of water is embathed in adjustment
Value adds 2.0 ~ 5.0% hydrochloric acid 6.5 ~ 7.5 after 10 ~ 30 minutes, when the pH value for embathing water is slowly increased beyond 8.0 again
Solution, makes the pH value for embathing water fall back to 6.5 ~ 7.5, keeps immersion；Repeat the operation, when in service sink to embathe water pH value steady
After being scheduled on 6.5 ~ 7.5 up to 0.5 ~ 1.0 hour, water will be embathed and be emitted into recovery pond, complete lixiviating matting.
Rapid Cleaning is carried out to the Gracilaria tenuistipitata that bleaching in service sink is finished, is added water and is embathed, while slow stir, will be embathed
Water waste discharge pond as early as possible, adds water again and embathes, repeat the operation.When the 4th adds water, the pH value of water is embathed 4.5 ~ 6.0, side
Stirring side adds 0.5 ~ 1.0%NaOH solution, adjustment to embathe the pH value of water 6.0 ~ 7.0, keep immersion, work as leaching in service sink
When wash water pH value is slowly fallen after rise less than 6.0, add 0.5 ~ 1.0%NaOH solution again while stirring, go up to the pH value for embathing water
To 6.0 ~ 7.0, immersion is kept；Repeat the operation, when in service sink to embathe water ph value stable little 6.0 ~ 7.0 up to 1.0 ~ 2.0
Shi Hou, discharge embathe water to recovery pond, complete the matting after Gracilaria tenuistipitata bleaching.
After water in recovery pond is through nylon screen filtration, clean for the lixiviating after next Gracilaria tenuistipitata alkali process.
The present embodiment completes the lixiviating cleaning of Gracilaria tenuistipitata by need to only adding altogether 7 clear water, compared with prior art, save
The water consumption that embathes for 6 times, water-saving rate embathe the response rate 22% of water up to 46%.
The micro- yellow of water is embathed in recovery pond.
Embodiment 4
With the water of recovery pond to alkali process after Gracilaria tenuistipitata carry out 2 times and embathe, slow stir after will embathe water and be discharged into wastewater disposal basin.Again
Plus clear water embathes Gracilaria tenuistipitata, the pH value of water is now embathed 8.0 ~ 11.0, in service sink, a small amount of repeatedly addition mass fraction is 2.0
~ 5.0% hydrochloric acid solution, and stir in time, adjustment embathes the pH value of water 6.5 ~ 7.5, after 10 ~ 30 minutes, as the pH for embathing water
When value is slowly increased beyond 8.0,2.0 ~ 5.0% hydrochloric acid solutions are added again, make the pH value for embathing water fall back to 6.5 ~ 7.5, keep
Immersion；Repeat the operation, when in service sink embathe water pH stable 6.5 ~ 7.5 up to 0.5 ~ 1.0 hour after, will embathe water row
Put to recovery pond, complete lixiviating matting.
Rapid Cleaning is carried out to the Gracilaria tenuistipitata that bleaching in service sink is finished, is added water and is embathed, while slow stir, will be embathed
Water waste discharge pond as early as possible, adds water again and embathes, repeat the operation.When the 4th adds water, the pH value of water is embathed 4.5 ~ 6.0, side
Stirring side adds 0.5 ~ 1.0%NaOH solution, adjustment to embathe the pH value of water 6.0 ~ 7.0, keep immersion, work as leaching in service sink
When wash water pH value is slowly fallen after rise less than 6.0, add 0.5 ~ 1.0%NaOH solution again while stirring, go up to the pH value for embathing water
To 6.0 ~ 7.0, immersion is kept；Repeat the operation, when in service sink to embathe water ph value stable little 6.0 ~ 7.0 up to 1.0 ~ 2.0
Shi Hou, discharge embathe water to recovery pond, complete the matting after Gracilaria tenuistipitata bleaching.
After water in recovery pond is through nylon screen filtration, clean for the lixiviating after next Gracilaria tenuistipitata alkali process.
The present embodiment completes the lixiviating cleaning of Gracilaria tenuistipitata by need to only adding altogether 5 clear water, compared with prior art, save
The water consumption that embathes for 8 times, water-saving rate embathe the response rate 28% of water up to 61%.
It is aobvious more light yellow that water is embathed in recovery pond.
Embodiment 5
With the water of recovery pond to alkali process after Gracilaria tenuistipitata carry out 2 times and embathe, slow stir after will embathe water and be discharged into wastewater disposal basin, after
Continuous plus clear water embathes 1 time and is discharged into wastewater disposal basin, again plus clear water embathes Gracilaria tenuistipitata, now embathes the pH value of water 8.0 ~ 11.0,
To in service sink, a small amount of repeatedly addition mass fraction is 2.0 ~ 5.0% hydrochloric acid solution, and stirs in time, and the pH of water is embathed in adjustment
Value adds 2.0 ~ 5.0% hydrochloric acid 6.5 ~ 7.5 after 10 ~ 30 minutes, when the pH value for embathing water is slowly increased beyond 8.0 again
Solution, makes the pH value for embathing water fall back to 6.5 ~ 7.5, keeps immersion；Repeat the operation, when in service sink to embathe water pH value steady
After being scheduled on 6.5 ~ 7.5 up to 0.5 ~ 1.0 hour, water will be embathed and be emitted into recovery pond, complete lixiviating matting.
Rapid Cleaning is carried out to the Gracilaria tenuistipitata that bleaching in service sink is finished, is added water and is embathed, while slow stir, will be embathed
Water waste discharge pond as early as possible, adds water again and embathes, repeat the operation.When the 4th adds water, the pH value of water is embathed 4.5 ~ 6.0, side
Stirring side adds 0.5 ~ 1.0%NaOH solution, adjustment to embathe the pH value of water 6.0 ~ 7.0, keep immersion, work as leaching in service sink
When wash water pH value is slowly fallen after rise less than 6.0, add 0.5 ~ 1.0%NaOH solution again while stirring, go up to the pH value for embathing water
To 6.0 ~ 7.0, immersion is kept；Repeat the operation, when in service sink to embathe water ph value stable little 6.0 ~ 7.0 up to 1.0 ~ 2.0
Shi Hou, discharge embathe water to recovery pond, complete the matting after Gracilaria tenuistipitata bleaching.
After water in recovery pond is through nylon screen filtration, clean for the lixiviating after next Gracilaria tenuistipitata alkali process.
The present embodiment completes the lixiviating cleaning of Gracilaria tenuistipitata by need to only adding altogether 6 clear water, compared with prior art, save
The water consumption that embathes for 7 times, water-saving rate embathe the response rate 25% of water up to 54%.
Water is embathed in recovery pond shows light yellow.
Embodiment 6
With the water of recovery pond to alkali process after Gracilaria tenuistipitata carry out 2 times and embathe, slow stir after will embathe water and be discharged into wastewater disposal basin, after
Continuous plus clear water embathes 2 times and is discharged into wastewater disposal basin, again plus clear water embathes Gracilaria tenuistipitata, now embathes the pH value of water 8.0 ~ 11.0,
To in service sink, a small amount of repeatedly addition mass fraction is 2.0 ~ 5.0% hydrochloric acid solution, and stirs in time, and the pH of water is embathed in adjustment
Value adds 2.0 ~ 5.0% hydrochloric acid 6.5 ~ 7.5 after 10 ~ 30 minutes, when the pH value for embathing water is slowly increased beyond 8.0 again
Solution, makes the pH value for embathing water fall back to 6.5 ~ 7.5, keeps immersion；Repeat the operation, when in service sink to embathe water pH value steady
After being scheduled on 6.5 ~ 7.5 up to 0.5 ~ 1.0 hour, water will be embathed and be emitted into recovery pond, complete lixiviating matting.
Rapid Cleaning is carried out to the Gracilaria tenuistipitata that bleaching in service sink is finished, is added water and is embathed, while slow stir, will be embathed
Water waste discharge pond as early as possible, adds water again and embathes, repeat the operation.When adding water for the 3rd time, the pH value of water is embathed 4.5 ~ 6.0, side
Stirring side adds 0.5 ~ 1.0%NaOH solution, adjustment to embathe the pH value of water 6.0 ~ 7.0, keep immersion, work as leaching in service sink
When wash water pH value is slowly fallen after rise less than 6.0, add 0.5 ~ 1.0%NaOH solution again while stirring, go up to the pH value for embathing water
To 6.0 ~ 7.0, immersion is kept；Repeat the operation, when in service sink to embathe water ph value stable little 6.0 ~ 7.0 up to 1.0 ~ 2.0
Shi Hou, discharge embathe water to recovery pond, complete the matting after Gracilaria tenuistipitata bleaching.
After water in recovery pond is through nylon screen filtration, clean for the lixiviating after next Gracilaria tenuistipitata alkali process.
The present embodiment completes the lixiviating cleaning of Gracilaria tenuistipitata by need to only adding altogether 6 clear water, compared with prior art, save
The water consumption that embathes for 7 times, water-saving rate embathe the response rate 25% of water up to 54%.
Water is embathed in recovery pond shows light yellow.
Embodiment 7
With the water of recovery pond to alkali process after Gracilaria tenuistipitata carry out 2 times and embathe, slow stir after will embathe water and be discharged into wastewater disposal basin, after
Continuous plus clear water embathes 1 time and is discharged into wastewater disposal basin, again plus clear water embathes Gracilaria tenuistipitata, now embathes the pH value of water 8.0 ~ 11.0,
To in service sink, a small amount of repeatedly addition mass fraction is 2.0 ~ 5.0% hydrochloric acid solution, and stirs in time, and the pH of water is embathed in adjustment
Value adds 2.0 ~ 5.0% hydrochloric acid 6.5 ~ 7.5 after 10 ~ 30 minutes, when the pH value for embathing water is slowly increased beyond 8.0 again
Solution, makes the pH value for embathing water fall back to 6.5 ~ 7.5, keeps immersion；Repeat the operation, when in service sink to embathe water pH value steady
After being scheduled on 6.5 ~ 7.5 up to 0.5 ~ 1.0 hour, water will be embathed and be emitted into recovery pond, complete lixiviating matting.
Rapid Cleaning is carried out to the Gracilaria tenuistipitata that bleaching in service sink is finished, is added water and is embathed, while slow stir, will be embathed
Water waste discharge pond as early as possible, adds water again and embathes, repeat the operation.When adding water for the 2nd time, the pH value of water is embathed 4.5 ~ 6.0, side
Stirring side adds 0.5 ~ 1.0%NaOH solution, adjustment to embathe the pH value of water 6.0 ~ 7.0, keep immersion, work as leaching in service sink
When wash water pH value is slowly fallen after rise less than 6.0, add 0.5 ~ 1.0%NaOH solution again while stirring, go up to the pH value for embathing water
To 6.0 ~ 7.0, immersion is kept；Repeat the operation, when in service sink to embathe water ph value stable little 6.0 ~ 7.0 up to 1.0 ~ 2.0
Shi Hou, discharge embathe water to recovery pond, complete the matting after Gracilaria tenuistipitata bleaching.
After water in recovery pond is through nylon screen filtration, clean for the lixiviating after next Gracilaria tenuistipitata alkali process.
The present embodiment completes the lixiviating cleaning of Gracilaria tenuistipitata by need to only adding altogether 4 clear water, compared with prior art, save
The water consumption that embathes for 9 times, water-saving rate embathe the response rate 33% of water up to 69%.
It is aobvious more light yellow that water is embathed in recovery pond.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not right
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no need to be exhaustive to all of embodiment.All this
Any modification, equivalent and improvement that is made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (9)
1. a kind of from Gracilaria tenuistipitata extract agar production process water-saving method, it is characterised in that including lixiviating matting, bleaching
After process matting and embathe water recycle operation；
The lixiviating matting is comprised the following steps：Gracilaria tenuistipitata after by alkali process moves and is put in service sink, adds water and embathes, then
Water will be embathed and be discharged into wastewater disposal basin, and complete to embathe operation for 1 time, repeat described in embathe operation 1 ~ 4 time；Add into service sink clear
Water, is adjusted the pH value for embathing water in service sink 6.5 ~ 7.5, maintains the scope of above-mentioned pH value using acid, follow-up in pH stable
Continuous immersion 0.5 ~ 1.0 hour, discharge embathes water to recovery pond, that is, complete Gracilaria tenuistipitata lixiviating matting；
The water that embathes recycles operation to comprise the following steps：The water that embathes in recovery pond is used for lixiviating matting.
2. water-saving method according to claim 1, it is characterised in that matting includes following step after the bleaching
Suddenly：
Gracilaria tenuistipitata after to bleaching is put in service sink, is added water and is embathed, and then will embathe water waste discharge pond, completes 1 leaching
Wash operation, repeat described in embathe operation 1 ~ 2 time；Add clear water again into service sink, adjusted in service sink using alkali and embathe water
PH value 6.0 ~ 7.0, maintain the scope of above-mentioned pH value, continue immersion 1.0 ~ 2.0 hours after pH stable, water is embathed in discharge
To recovery pond, that is, complete the matting after Gracilaria tenuistipitata bleaching.
3. water-saving method according to claim 1, it is characterised in that in the lixiviating matting, using quality point
Number for 2.0 ~ 5.0% hydrochloric acid solution adjusting the pH value for embathing water in service sink.
4. water-saving method according to claim 1, it is characterised in that in matting after the bleaching, adopts
Mass fraction is 0.5 ~ 1.0% sodium hydroxide solution adjusting the pH value for embathing water in service sink.
5. water-saving method according to claim 3, it is characterised in that in the lixiviating matting, the maintenance pH
The method of value scope is：When the pH value for embathing water is more than 8.0, hydrochloric acid solution is added again.
6. water-saving method according to claim 4, it is characterised in that in matting after the bleaching, described
Maintain pH value range method be：When the pH value for embathing water is less than 6.0, sodium hydroxide solution is added again.
7. water-saving method according to claim 1, it is characterised in that the water that embathes is recycled in operation, by recovery pond
The interior water that embathes is used further to lixiviating matting after nylon screen filtration.
8. the water-saving method according to claim 1 or 7, it is characterised in that the water that embathes is recycled in operation, will be reclaimed
The water that embathes in pond is used for the 1st, 2 cleanings of the lixiviating matting.
9. water-saving method according to claim 1, it is characterised in that in the lixiviating matting, repeat the leaching
Wash operation 2 ~ 3 times.
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| CN107400181A (en) * | 2017-09-04 | 2017-11-28 | 广东海洋大学 | A kind of agar-agar production alkali process device and its application method |
| CN110669153A (en) * | 2019-10-25 | 2020-01-10 | 广东海洋大学 | Method for extracting agar from gracilaria |
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| CN107400181A (en) * | 2017-09-04 | 2017-11-28 | 广东海洋大学 | A kind of agar-agar production alkali process device and its application method |
| CN110669153A (en) * | 2019-10-25 | 2020-01-10 | 广东海洋大学 | Method for extracting agar from gracilaria |
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