CN118026335A - Method for recycling waste liquid by using composite material containing biomass and eutectic solvent - Google Patents
Method for recycling waste liquid by using composite material containing biomass and eutectic solvent Download PDFInfo
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- 239000007788 liquid Substances 0.000 title claims abstract description 64
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- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 23
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- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 12
- 239000001257 hydrogen Substances 0.000 claims abstract description 12
- 229960000907 methylthioninium chloride Drugs 0.000 claims abstract description 12
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 claims abstract description 12
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- 238000001354 calcination Methods 0.000 claims abstract description 5
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Abstract
The application discloses a method for recycling waste liquid by using a composite material containing biomass and a eutectic solvent, belongs to the field of sewage treatment, and aims to treat waste by using biomass waste and the eutectic solvent to prepare an adsorption material. In the technical scheme of the application, the hydrogen bond donor of the eutectic solvent is lactic acid, and the hydrogen bond acceptor of the eutectic solvent is valine; the biomass material is one or two of livestock and poultry pollutants and straws; the biomass-eutectic solvent composite material is obtained by mixing and calcining a eutectic solvent and a biomass material, and can adsorb waste liquid containing engine oil, dimethyl silicone oil, iodine, rhodamine B, methylene blue, methyl orange and the like. The application has the advantages that the application can overcome the defects of the prior art, realize the comprehensive resource utilization of solid waste straw and livestock and poultry pollutants, realize the low-cost recovery of waste engine oil and meet the concept of waste treatment by waste.
Description
Technical Field
The invention relates to a method for recycling waste liquid by using a composite material containing biomass and a eutectic solvent, belonging to the field of wastewater treatment.
Background
With the improvement of the living standard of people in China, the improvement of economy and strength, the rapid improvement of science and technology and the increasing of motor vehicle use are carried out, so that the generated waste engine oil is also increased, the waste engine oil is not timely recycled, the ecological environment is polluted, the physical health of human beings is endangered, and the recycling of the waste engine oil has important practical significance. The traditional method for recycling the waste engine oil has high cost and low recycling efficiency. The dimethyl silicone oil is widely applied in production and life, and the recovery of the dimethyl silicone oil is a large project, while the traditional recovery operation of the dimethyl silicone oil is complex and has low efficiency, so that the development of a method which is low in cost, simple and convenient to operate and green and efficient for adsorbing the waste engine oil and the waste dimethyl silicone oil has important significance.
Iodine is one of harmful components of nuclear wastewater, has carcinogenicity, and dye is composed of multi-benzene ring substituted compounds, has strong toxicity and is difficult to degrade, a large amount of dye which is improperly treated is discharged into lakes and rivers each year, and water still containing the dye is discharged to destroy the environment and simultaneously can bring a certain threat to water sources on which human beings depend to live. Therefore, the method for recycling iodine and dye in the waste liquid by utilizing the straws, namely livestock and poultry pollutants, namely the eutectic solvent type adsorption material has important significance.
With the rapid development of agriculture in China, the straw is greatly increased, if the straw is not timely treated, the straw is covered on the ground surface, so that the ground surface is wet and not dry, the soil health is affected, the land space resources are occupied, the land resources are wasted, the traditional straw recycling method cannot meet the recycling requirement, and therefore, the method has great practical significance in finding a new method for recycling straw waste. With the development of livestock industry in China, the treatment task of livestock and poultry pollutants is also gradually increased. Therefore, harmless treatment and resource utilization are carried out on the solid waste straw and livestock and poultry pollutants.
Disclosure of Invention
The invention provides a method for recycling waste liquid by using a composite material containing biomass and eutectic solvent and a method for adsorbing dye in waste water, which realize comprehensive recycling of solid waste straw and livestock and poultry pollutants, can realize low-cost recycling of waste engine oil and accords with the concept of waste treatment by waste.
In order to solve the technical problems, the technical scheme adopted by the invention is that the method for recycling waste liquid by using the composite material containing biomass and eutectic solvent comprises the following steps:
1) Preparing a eutectic solvent, mixing the prepared eutectic solvent with a biomass material, and then treating to obtain biomass, namely a eutectic solvent composite material;
2) Recycling waste liquid by using biomass, namely a eutectic solvent composite material;
The hydrogen bond donor of the eutectic solvent is lactic acid, and the hydrogen bond acceptor of the eutectic solvent is valine;
The biomass material is one of livestock and poultry pollutants and straws, or the biomass material is a mixture of the livestock and poultry pollutants and the straws;
the biomass-eutectic solvent composite material is obtained by mixing and calcining the eutectic solvent and biomass material.
Optimally, the method for recycling waste liquid by utilizing the composite material containing biomass and the eutectic solvent prepares the eutectic solvent with the molar ratio of hydrogen bond acceptors to hydrogen bond donors of 1:12.
Optimally, in the method for recycling waste liquid by using the composite material containing biomass and the eutectic solvent, in the process of preparing the eutectic solvent,
Valine and lactic acid were mixed in a molar ratio and stirred at a temperature of 80℃for 24 hours.
Optimally, in the method for recycling waste liquid by using the composite material containing the biomass and the eutectic solvent, when the biomass material is one of livestock and poultry pollutants and straws, the mass ratio of the biomass material to the eutectic solvent is 2:1 or 2:3;
when the biomass material is a mixture of livestock and poultry pollutants and straws, the mass ratio of the straws, the livestock and poultry pollutants and the eutectic solvent is 1:1:1 or 1:1:3.
Optimally, the method for recycling waste liquid by using the composite material containing biomass and eutectic solvent has the advantages that the raw materials of livestock and poultry pollutants are any one, two or more than two of cattle, sheep, pigs, pigeons or other livestock and poultry pollutants;
The waste liquid is liquid containing engine oil, simethicone, iodine, rhodamine B, methylene blue, methyl orange and the like.
Optimally, the method for recycling waste liquid by using the composite material containing biomass and the eutectic solvent comprises the steps that when the biomass eutectic solvent composite material is used for recycling waste liquid containing engine oil, the temperature is 25-40 ℃, the mass of an adsorption material is 0.1 g, and the waste liquid containing engine oil is 2-6.578 g;
When the biomass eutectic solvent composite material is used for recycling the waste liquid containing iodine and dye, the temperature is 25 ℃, the mass of the adsorption material is 0.15 g, and the waste liquid containing iodine and dye is 5 g.
Optimally, in the method for recycling waste liquid by using the composite material containing the biomass and the eutectic solvent, when the biomass eutectic solvent composite material is used for recycling waste liquid containing engine oil, the water content in the waste liquid is 0-20%;
When the eutectic solvent composite material is used for recycling the waste liquid containing iodine, the concentration of iodine in the waste water is 0.792 micromoles per liter;
When the biomass eutectic solvent composite material is used for recycling waste liquid containing dye, the concentration of the dye aqueous solution is 5 micromoles per liter.
Optimally, the method for recycling waste liquid by using the composite material containing biomass and the eutectic solvent has the advantages that when the biomass eutectic solvent composite material recycles the waste liquid containing engine oil, the time is 20 minutes to 3 hours,
When the biomass eutectic solvent composite material is used for recycling waste liquid containing dimethyl silicone oil, the time is 20 minutes;
when the biomass eutectic solvent composite material is used for recycling waste liquid containing iodine and dye, the time is 1 hour.
The application has the beneficial effects that:
According to the technical scheme, the defects of low efficiency, low speed and high pollution in the prior art can be overcome, the method is low in cost, simple and convenient to operate, can be adsorbed at normal temperature, and has important practical application value concept on comprehensive utilization of resources of livestock and poultry pollutants and solid wastes and recovery treatment of iodine and dye in waste engine oil, waste dimethyl silicone oil and waste water.
The invention provides a method for adsorbing dye in wastewater, which combines recycled engine oil, dimethyl silicone oil and the dye in the wastewater. Not only realizes the recovery of engine oil and dimethyl silicone oil materials, but also can adsorb dye in wastewater, and accords with the concept of treating waste with waste. The method is simple and convenient to operate, high in adsorption efficiency, convenient to recycle, environment-friendly and has important practical application values for wastewater treatment and engine oil recycling.
Detailed Description
The invention provides a method for recycling waste liquid by using a composite material containing biomass and eutectic solvent, which comprises the following steps:
1) Preparing a eutectic solvent, mixing the prepared eutectic solvent with a biomass material, and then treating to obtain biomass, namely a eutectic solvent composite material;
2) And (3) recycling the waste liquid by using the biomass-eutectic solvent composite material.
The hydrogen bond donor of the eutectic solvent is lactic acid, and the hydrogen bond acceptor of the eutectic solvent is valine. The biomass material adopts livestock and poultry pollutants and straws.
In preparing the eutectic solvent, valine and lactic acid are mixed according to a molar ratio of 1:12 and then stirred, wherein the temperature is kept at 80 ℃ during stirring, and the stirring and mixing time is 24 hours.
When the biomass eutectic solvent composite material is prepared, the biomass eutectic solvent composite material is obtained after the eutectic solvent is mixed with the biomass material and calcined. The raw materials of the livestock and poultry pollutants can be any one, two or more than two of cattle, sheep, pig, pigeon or other livestock and poultry pollutants.
When the biomass is prepared from the eutectic solvent composite material, and the biomass material is one of livestock and poultry pollutants and straws, the mass ratio of the biomass material to the eutectic solvent is 2:1 or 2:3; when the biomass material is a mixture of livestock and poultry pollutants and straws, the mass ratio of the straws, the livestock and poultry pollutants and the eutectic solvent is 1:1:1 or 1:1:3.
In the application, the waste liquid which can be treated by the biomass eutectic solvent composite material is any one of liquid containing engine oil, dimethyl silicone oil, iodine, rhodamine B, methylene blue, methyl orange and the like. When the biomass eutectic solvent composite material is used for recycling the waste liquid containing engine oil, the temperature is 25-40 ℃, and the mass of the adsorption material is 0.1 g; when the biomass eutectic solvent composite material is used for recycling the waste liquid containing iodine and dye, the temperature is 25 ℃, and the mass of the adsorption material is 0.15 g.
When the biomass eutectic solvent composite material is used for recycling the waste liquid containing engine oil, the water content in the waste liquid is 0% -20%; when the eutectic solvent composite material is used for recycling the waste liquid containing iodine, the concentration of iodine in the waste water is 0.792 micromoles per liter; when the biomass eutectic solvent composite material is used for recycling waste liquid containing dye, the concentration of the dye aqueous solution is 5 micromoles per liter.
When the biomass eutectic solvent composite material is used for recycling the waste liquid containing engine oil, the time is 20 minutes to 3 hours; when the biomass eutectic solvent composite material is used for recycling waste liquid containing dimethyl silicone oil, the time is 20 minutes; when the biomass eutectic solvent composite material is used for recycling waste liquid containing iodine and dye, the time is 1 hour.
After adsorption, we measured the adsorption efficiency, and the specific process is:
And centrifuging the waste engine oil and the waste dimethyl silicone oil after adsorption, and separating and filtering the waste engine oil and the dimethyl silicone oil which are not adsorbed. And for iodine and dye, directly filtering the iodine and dye in the non-adsorbed wastewater.
Desorption of engine oil from the adsorbent material is a relatively well-established process, in which case desorption may be achieved by simple centrifugation.
The eutectic solvent is a raw material for synthesizing the composite material, the composite material synthesized by taking the eutectic solvent as the raw material is insoluble in water, and the eutectic solvent plays roles of pore-forming agent, bulking agent, active group and the like in the composite material synthesis, so that the increase of pollutants in water can not be caused.
And weighing the filtered adsorption material and the waste engine oil and the waste dimethyl silicone oil adsorbed by the adsorption material, and calculating the adsorption efficiency. The adsorption material, the waste engine oil and the waste dimethyl silicone oil are mixed and adsorbed for a certain time and then are centrifuged, the rotation speed of centrifugation is 1000 revolutions per minute, and the centrifugation time is 5 minutes. Filtering the waste engine oil which is not adsorbed after centrifugation for 5-15 minutes. And filtering the waste dimethyl silicone oil which is not adsorbed after centrifugation for 5 minutes. The data of the actual adsorption oil quantity is measured and calculated by using an analytical balance, and the adsorption efficiency (expressed by 1 gram of straw, livestock and poultry pollutants and waste oil quantity adsorbed by the eutectic solvent type adsorption material) is calculated.
And for iodine and dye, the adsorption material is mixed with iodine and dye in the wastewater respectively for adsorption for a certain time, and then the carbon material is filtered out by a needle filter to obtain filtrate.
The absorbance of the aqueous solution of original iodine and the aqueous solution of adsorbed iodine was measured using a spectrophotometer with distilled water as a reference at a wavelength of 404 nm, the absorbance of the aqueous solution of original methylene blue and the absorbance of the aqueous solution of adsorbed methylene blue were measured with distilled water as a reference at a wavelength of 710 nm, the absorbance of the aqueous solution of original rhodamine B and the absorbance of the aqueous solution of adsorbed rhodamine B were measured with distilled water as a reference at a wavelength of 602 nm, and the absorbance of the aqueous solution of original methyl orange and the absorbance of the aqueous solution of adsorbed methyl orange were measured with distilled water as a reference at a wavelength of 514 nm. The adsorption rate was calculated from the measured absorbance.
The technical features of the present invention are further described below in conjunction with specific embodiments.
Example 1
And (3) grinding the dried livestock and poultry pollutants (cow dung, pigeon dung and pig dung) and straws into powder respectively by using a grinding machine, and uniformly stirring the livestock and poultry pollutants, the straw powder and the eutectic solvent after mixing. Wherein, the mass ratio of the pigeon feces powder to the straw powder to the eutectic solvent is 1:1:1, 1:1:3; the mass ratio of the cow dung powder to the straw powder to the eutectic solvent is 1:1:1; the mass ratio of the pig manure powder to the straw powder to the eutectic solvent is 1:1:1.
Transferring the mixed material to a crucible, placing the crucible in a muffle furnace for calcining for 1 hour and preserving heat for 2 hours to obtain the straw, namely the livestock and poultry pollutant, namely the eutectic solvent type adsorption material.
0.1 G of straw, namely livestock and poultry pollutant, namely eutectic solvent type adsorption material and 2g of waste engine oil with the water content of 0% are weighed by an analytical balance, are placed in a centrifuge tube, are adsorbed for 20 minutes at the temperature of 25 ℃, are centrifuged for 5 minutes at the rotating speed of 1000 revolutions per minute after being adsorbed, are then placed in a position with a fixed inclination angle for 5 minutes, the data of the actual adsorption oil quantity are measured and calculated by the analytical balance, and the adsorption efficiency (expressed by 1g of straw, namely livestock and poultry pollutant, namely the waste engine oil quantity adsorbed by the eutectic solvent type adsorption material) is calculated.
Under the condition of 25 ℃,1 gram of straw/pigeon feces/eutectic (mass ratio of 1:1:1) solvent type adsorbing material can adsorb 3.866 grams of waste engine oil with water content of 0%, and the adsorption efficiency is 386.63%.
Example 2
This embodiment differs from embodiment 1 in that: the specific implementation process is the same as that of the embodiment 1, the time of the adsorbed waste engine oil is changed to 1 hour, and other conditions are not changed. Under the condition of 25 ℃,1 gram of straw/pigeon feces/eutectic solvent type (mass ratio of 1:1:1) adsorption material can adsorb 4.062 grams of waste engine oil with water content of 0%, and the adsorption efficiency is 406.21%.
Example 3
The specific implementation process is the same as that of the example 1, the time of the adsorbed waste engine oil is changed to 3 hours, and other conditions are not changed. Under the condition of 25 ℃,1 gram of straw/pigeon feces/eutectic solvent type (mass ratio of 1:1:1) adsorption material can adsorb 4.076 grams of waste engine oil with water content of 0%, and the adsorption efficiency is 407.61%.
Example 4
This embodiment differs from embodiment 1 in that: the specific implementation process is the same as that of the example 1, the water content of the waste engine oil is changed to 20%, and other conditions are not changed. Under the condition of 25 ℃,1 gram of straw, pigeon feces and eutectic solvent type adsorbing material (mass ratio of 1:1:1) can adsorb 6.578 grams of waste engine oil with water content of 20%, and the adsorption efficiency is 657.84%.
Example 5
This embodiment differs from embodiment 1 in that: the specific implementation process is the same as that of example 1, the filtering time is changed to 15 minutes, and other conditions are unchanged. Under the condition of 25 ℃,1 gram of straw, pigeon feces and eutectic solvent type adsorbing material (mass ratio of 1:1:1) can adsorb 3.599 grams of waste engine oil with water content of 0%, and the adsorption efficiency is 359.88%.
Example 6
This embodiment differs from embodiment 1 in that: the specific implementation process is the same as that of the embodiment 1, the adsorption temperature is changed to 40 ℃ at 25 ℃, and other conditions are unchanged. 1 g of straw/pigeon feces/eutectic solvent adsorption material (mass ratio 1:1:1) can adsorb 4.061 g of waste engine oil with water content of 0%, and the adsorption efficiency is 406.15%.
Example 7
This embodiment differs from embodiment 1 in that: grinding the dried livestock and poultry pollutants (cow dung and pigeon dung) and straws into powder respectively by using a grinding machine, mixing the pigeon dung powder, the straw powder and the eutectic solvent (mass ratio of 1:1 to 1 and 1:1 to 3) respectively, stirring uniformly, transferring the mixed material to a crucible, placing the crucible in a muffle furnace, calcining for 1 hour, and preserving heat for 2 hours to obtain the straw-livestock and poultry pollutant-eutectic solvent type adsorbing material. 0.15 g of pigeon manure powder, straw powder and eutectic solvent (mass ratio 1:1:1) and 5g of aqueous solution of iodine with concentration of 0.792 micromoles per liter are weighed by an analytical balance, adsorbed for 1 hour at 25 ℃, filtered by a needle filter after adsorption, and absorbance of the filtrate is measured at a wavelength of 404 nm by a spectrophotometer. The adsorption rate of the carbon material to iodine in the wastewater is 98.96 percent by spectrophotometry.
Example 8
This embodiment differs from embodiment 7 in that: the specific implementation process is the same as that of example 7, the adsorbent is changed into pigeon feces powder, straw powder and eutectic solvent (mass ratio is 1:1:3), and other conditions are not changed. The adsorption efficiency of the carbon material for adsorbing iodine in the wastewater for 1 hour at 25 ℃ is 97.74%.
Example 9
This embodiment differs from embodiment 7 in that: the specific implementation process is the same as that of example 7, the adsorbent is changed into cow dung powder, straw powder and eutectic solvent (mass ratio is 1:1:1), and other conditions are not changed. The adsorption efficiency of the carbon material for adsorbing iodine in the wastewater for 1 hour at 25 ℃ is 92.34%.
Example 10
This embodiment differs from embodiment 7 in that: the procedure of example 7 was followed except that the aqueous iodine solution was changed to a methylene blue aqueous solution of 5. Mu. Mol/liter, and the other conditions were not changed. The adsorption efficiency of the methylene blue in the wastewater by the carbon material for 1 hour under the condition of 25 ℃ is 94.63 percent.
Example 11
This embodiment differs from embodiment 7 in that: the procedure of example 7 was followed except that the aqueous iodine solution was changed to a 5. Mu. Mol/L aqueous methyl orange solution under the same conditions. The adsorption efficiency of the methyl orange in the wastewater by the carbon material for 1 hour at 25 ℃ is 94.05%.
Example 12
This embodiment differs from embodiment 7 in that: specific procedure the same as in example 7 was carried out except that the aqueous iodine solution was changed to 5. Mu. Mol/liter rhodamine B solution, and the other conditions were unchanged. The adsorption efficiency of rhodamine B in wastewater by the carbon material for 1 hour under the condition of 25 ℃ is 99.12 percent.
Example 13
This embodiment differs from embodiment 10 in that: the specific implementation process is the same as that of example 10, the aqueous solution of iodine is changed into 5 micromoles per liter of methyl orange aqueous solution, the adsorbent is changed into pigeon feces powder, straw powder and eutectic solvent (mass ratio is 1:1:3), and other conditions are unchanged. The adsorption efficiency of the carbon material for adsorbing methyl orange in the wastewater for 1 hour is 91.58 percent under the condition of 25 ℃.
Example 14
This embodiment differs from embodiment 10 in that: the specific implementation process is the same as that of example 10, the aqueous solution of iodine is changed into 5 micromoles per liter of rhodamine B aqueous solution, the adsorbent is changed into pigeon feces powder, straw powder and eutectic solvent (mass ratio is 1:1:3), and other conditions are unchanged. The adsorption efficiency of rhodamine B in wastewater by the carbon material for 1 hour under the condition of 25 ℃ is 99.41 percent.
Example 15
This embodiment differs from embodiment 10 in that: the specific implementation process is the same as that of example 10, the aqueous solution of iodine is changed into a methylene blue aqueous solution with the concentration of 5 micromoles per liter, the adsorbent is changed into pigeon feces powder, straw powder and eutectic solvent (mass ratio of 1:1:3), and other conditions are unchanged. The adsorption efficiency of the methylene blue in the wastewater by the carbon material for 1 hour at 25 ℃ is 99.89%.
Example 16
This embodiment differs from embodiment 10 in that: the specific implementation process is the same as in example 10, the aqueous solution of iodine is changed into a methylene blue aqueous solution with the concentration of 5 micromoles per liter, and the adsorbent is changed into cow dung powder, straw powder and eutectic solvent (the mass ratio is 1:1:1), and other conditions are unchanged. The adsorption efficiency of the methylene blue in the wastewater by the carbon material for 1 hour at 25 ℃ is 99.79 percent.
Example 17
This embodiment differs from embodiment 10 in that: the specific implementation process is the same as that of example 10, the aqueous solution of iodine is changed into 5 micromoles per liter of rhodamine B aqueous solution, and the adsorbent is changed into cow dung powder, straw powder and eutectic solvent (mass ratio is 1:1:1), and other conditions are unchanged. The adsorption efficiency of rhodamine B in wastewater by the carbon material for 1 hour under the condition of 25 ℃ is 99.41 percent.
Example 18
This embodiment differs from embodiment 10 in that: the specific implementation process is the same as in example 10, the aqueous solution of iodine is changed into 5 micromoles per liter of methyl orange aqueous solution, and the adsorbent is changed into cow dung powder, straw powder and eutectic solvent (mass ratio is 1:1:1), and other conditions are unchanged. The adsorption efficiency of the methyl orange in the wastewater by the carbon material for 1 hour at 25 ℃ is 95.65%.
Example 20
This embodiment differs from embodiment 1 in that: the specific implementation process is the same as that of the example 1, the waste engine oil is changed to the waste dimethyl silicone oil, and other conditions are not changed. Under the condition of 25 ℃,1 gram of straw/pigeon feces/eutectic (mass ratio of 1:1:1) solvent type adsorption material can adsorb 3.835 grams of waste dimethyl silicone oil, and the adsorption efficiency is 383.12%.
Example 21
This embodiment differs from embodiment 1 in that: the specific implementation process is the same as that of the embodiment 1, the waste engine oil is changed to be used for absorbing waste dimethyl silicone oil, the solvent type adsorption material for absorbing the pigeon feces is changed from straw to pigeon feces in a eutectic (mass ratio of 1:1:1), and other conditions are not changed. Under the condition of 25 ℃,1 gram of straw/pigeon feces/eutectic (mass ratio of 1:1:3) solvent type adsorption material can adsorb 4.001 grams of waste dimethyl silicone oil, and the adsorption efficiency is 389.11%.
Example 22
This embodiment differs from embodiment 1 in that: the specific implementation process is the same as that of the embodiment 1, the waste engine oil is changed to be used for absorbing waste dimethyl silicone oil, the solvent type adsorption material for absorbing the waste and old straws and pigeon feces is changed to be the solvent type adsorption material for absorbing the waste and old straws and cow feces and the eutectic solvent type adsorption material for absorbing the waste and old straws and the pigeon feces (the mass ratio is 1:1:1), and other conditions are not changed. Under the condition of 25 ℃,1 gram of straw/cow dung/eutectic (mass ratio of 1:1:1) solvent type adsorption material can adsorb 3.809 grams of waste dimethyl silicone oil, and the adsorption efficiency is 379.38%.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that various changes, modifications, additions and substitutions can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. A method for recovering waste liquid from a composite material comprising biomass and a eutectic solvent, comprising the steps of:
1) Preparing a eutectic solvent, mixing the prepared eutectic solvent with a biomass material, and then treating to obtain biomass, namely a eutectic solvent composite material;
2) Recycling waste liquid by using biomass, namely a eutectic solvent composite material;
The hydrogen bond donor of the eutectic solvent is lactic acid, and the hydrogen bond acceptor of the eutectic solvent is valine;
The biomass material is one of livestock and poultry pollutants and straws, or the biomass material is a mixture of the livestock and poultry pollutants and the straws;
the biomass-eutectic solvent composite material is obtained by mixing and calcining the eutectic solvent and biomass material.
2. The method for recycling waste liquid using a composite material containing biomass and eutectic solvent according to claim 1, wherein:
the molar ratio of hydrogen bond acceptor to hydrogen bond donor to prepare the eutectic solvent was 1:12.
3. The method for recycling waste liquid using a composite material containing biomass and eutectic solvent according to claim 1, wherein: in the process of preparing the eutectic solvent,
Valine and lactic acid were mixed in a molar ratio and stirred at a temperature of 80℃for 24 hours.
4. The method for recycling waste liquid using a composite material containing biomass and eutectic solvent according to claim 1, wherein:
When the biomass material is one of livestock and poultry pollutants and straws, the mass ratio of the biomass material to the eutectic solvent is 2:1 or 2:3;
when the biomass material is a mixture of livestock and poultry pollutants and straws, the mass ratio of the straws, the livestock and poultry pollutants and the eutectic solvent is 1:1:1 or 1:1:3.
5. The method for recycling waste liquid using a composite material containing biomass and eutectic solvent according to claim 1, wherein: the raw materials of the livestock and poultry pollutants are any one, two or more than two of cattle, sheep, pigs, pigeons or other livestock and poultry pollutants;
The waste liquid is liquid containing engine oil, simethicone, iodine, rhodamine B, methylene blue, methyl orange and the like.
6. The method for recycling waste liquid using a composite material containing biomass and eutectic solvent according to claim 1, wherein:
When the biomass eutectic solvent composite material is used for recycling the waste liquid containing the engine oil, the temperature is 25-40 ℃, the mass of the adsorption material is 0.1 g, and the waste liquid containing the engine oil is 2-6.578 g;
When the biomass eutectic solvent composite material is used for recycling the waste liquid containing iodine and dye, the temperature is 25 ℃, the mass of the adsorption material is 0.15 g, and the waste liquid containing iodine and dye is 5 g.
7. The method for recycling waste liquid using a composite material containing biomass and eutectic solvent according to claim 1, wherein:
when the biomass eutectic solvent composite material is used for recycling the waste liquid containing engine oil, the water content in the waste liquid is 0% -20%;
When the eutectic solvent composite material is used for recycling the waste liquid containing iodine, the concentration of iodine in the waste water is 0.792 micromoles per liter;
When the biomass eutectic solvent composite material is used for recycling waste liquid containing dye, the concentration of the dye aqueous solution is 5 micromoles per liter.
8. The method for recycling waste liquid using a composite material containing biomass and eutectic solvent according to claim 5, wherein:
When the biomass eutectic solvent composite material is used for recycling the waste liquid containing engine oil, the time is 20 minutes to 3 hours;
When the biomass eutectic solvent composite material is used for recycling waste liquid containing dimethyl silicone oil, the time is 20 minutes;
when the biomass eutectic solvent composite material is used for recycling waste liquid containing iodine and dye, the time is 1 hour.
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