CN102091603B - Preparation method and application of novel adsorbent resin - Google Patents
Preparation method and application of novel adsorbent resin Download PDFInfo
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- CN102091603B CN102091603B CN201010624058.5A CN201010624058A CN102091603B CN 102091603 B CN102091603 B CN 102091603B CN 201010624058 A CN201010624058 A CN 201010624058A CN 102091603 B CN102091603 B CN 102091603B
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- gel particles
- sodium alginate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides a method for preparing novel adsorbent resin, which comprises the following process steps of: (1) dissolving sodium alginate and nutritional components of a yeast peptone dextrose (YPD) medium in water, heating for dissolving, cooling to room temperature, adding kaolin, sodium hydrogen carbonate and polyethylene glycol to obtain mixed solution, and dripping into calcium chloride solution to prepare gel particles; (2) heating the gel particles to obtain porous gel particles; and (3) drying the porous gel particles at 85DEG C for 15 minutes, cooling, putting into yeast suspension, and culturing to obtain the novel microorganism-loaded absorbent resin. The resin has double performance of oil absorption and water absorption; the porous gel particles prepared from the sodium alginate serve as a microorganism carrier; in organic waste gas treatment application, adsorption and biological treatment are integrated; and the resin can be recycled and is not needed to be regenerated, so that cost and operating expense are saved.
Description
Technical field
The present invention relates to the field of adsorbent and Environmental Technology, specifically relate to New Polymeric Adsorbent, be especially loaded with the preparation method of the polymeric adsorbent of microorganism and be applied to the adsorption cleaning of organic exhaust gas.
Background technology
Along with the continuous progress of science and technology, various pollution problem becomes increasingly conspicuous.In the process such as chemical industry, plastics, adhesive producing and spraying, create a large amount of organic exhaust gas containing VOC, enter air as unprocessed, photochemical pollution can be formed under certain condition, cause serious atmosphere pollution; And this compounds has toxicity mostly, part is listed in carcinogen, and as formaldehyde, vinyl chloride, benzene, polycyclic aromatic hydrocarbon etc., it causes great harm to environment, vegeto-animal growth and human health.The pollution of organic exhaust gas is a problem that can not be ignored.
VOCs treatment has multiple technologies measure, reduces oil loss, minimizing consumption of organic solvent or exhaust gas purification to eliminate Organic Waste Gas Pollution by different approaches.Method conventional at present has absorption method, absorption process, Production by Catalytic Combustion Process, flame combustion method, bioanalysis etc.
Charcoal absorption uses organic waste gas treatment method the most general at present, and adsorption efficiency is high, and treatment effect is good, has good absorption property to containing benzene,toluene,xylene class waste gas, but poor to hydro carbons waste gas adsorptivity.But charcoal absorption regeneration is difficult, operating cost is high, be not suitable for the organic exhaust gas processing high humidity, and this is the bottleneck hindering active carbon adsorption to use, and with regard to the character of active carbon itself, this weakness cannot overcome.
Summary of the invention
The object of the invention is to adopt novel composite resin, and it has parents' performance, and can use as high water absorbent and oil absorbent, this resin has long service life, reusable edible simultaneously.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
A preparation method for New Polymeric Adsorbent, comprises following processing step:
(1) hydrophilic gel particle is prepared: by soluble in water for the nutritional labeling of sodium alginate, YDP culture medium, heating for dissolving, be cooled to room temperature, add kaolin, sodium acid carbonate, polyethylene glycol obtain mixed liquor, described mixed liquor is added drop-wise in calcium chloride solution and makes Beads gel particles;
(2) the hydrophilic gel particle of loose structure is prepared: by the gel particles heating described in step (1), obtain porous gel grain;
(3) preparation is loaded with the New Polymeric Adsorbent of microorganism: by the porous gel grain described in step (2) in 85 DEG C, dry 15min, and cooling, throw in saccharomycete suspension, shaking table cultivates 24 hours, must be loaded with the New Polymeric Adsorbent of microorganism.
Described step (1) also comprises: by soluble in water for the nutritional labeling of sodium alginate, YDP culture medium, heating for dissolving, be cooled to room temperature, then add sodium acid carbonate, polyethylene glycol, then add kaolin, stirring makes it dissolve, finally draw with the syringe be connected with syringe needle, by the aperture of 1.5 ~ 2.0mm, drip in the plate filling 10% calcium chloride solution with constant speed and make gel beads, utilize magnetic stirring apparatus to stir simultaneously, make sodium alginate and cross-linking agent even.
Described step (2) comprising:
(21) calcium ion on gel particles surface is washed away with pure water;
(22) gel particles put into the volumetric flask filling certain water yield and be sealed in 121 DEG C of autoclaving 10min, obtaining porous gel grain.
Described step (3) also comprises: the yeast strain of separation and purification to be inoculated in the triangular flask of the 250ml that 100mlYDP culture medium is housed 30 DEG C, and 72h cultivated by 160rpm shaking table, obtains saccharomycete suspension.
The concentration of described calcium chloride solution is 5-10%, wherein preferably 5%
Described sodium alginate, kaolin, sodium acid carbonate, polyethylene glycol weight ratio are:
Sodium alginate 3.20%
Kaolin 2%
Sodium acid carbonate 6%
Polyethylene glycol 1%
The Novel adsorption type resin that a kind of above-mentioned preparation method obtains is applied to the absorption of organic exhaust gas.
Know-why
The present invention adopts sodium alginate as microbial immobilization reagent, 1 is relied on by a-L-mannuronic acid (M unit) and b-D-guluronic acid (G unit), 4-glycosidic bond connects and the copolymer be made up of different GGGMMM fragment, and its solution can react with a lot of divalence and Tricationic and form gel; Gel can at room temperature be formed, and heating is not also melted; Sodium alginate and calcium chloride are cross-linked, can obtain high hydroscopic resin, sodium acid carbonate decomposes under the high temperature conditions, this water-absorbing resin can be made to form porous particles, be beneficial to saccharomycete Growth and reproduction wherein.The present invention adopts sodium alginate as the raw material of carrier, itself and microorganism have and stably bond, and itself has hydrophily, in addition, sodium alginate is cheap and be easy to get, and it can be used as carrier to microbial growth unrestraint effect, a best condition is provided to microbial growth.The hardness of the carrier that sodium alginate is prepared from and be very high by force intensity, but due to its inside, there is loose structure, and hole communicates with the external world, thus make gel particles become soft and lose elasticity.The present invention adds water-fast solid particle, plays the effect of support, thus gel particles is become have the particle of some strength.
Present invention employs NaHCO3 as pore-foaming agent, it is minimum on the impact of growth of microorganism, and can not react with other materials on gel particles, ensures the stability of gel particles.
The materials such as the present invention adopts polyethylene glycol as dispersant, and make in the foaming process of gel particles, pore-foaming agent is uniformly distributed, other image intensifying agent simultaneously also can be evenly distributed, thus it is even to obtain pore size distribution, the sizable gel particle of intensity.
The beneficial effect of the invention
Polymeric adsorbent of the present invention has parents' performance, i.e. hydrophobic oleophilic oil and hydrophily, simultaneously as doing oil absorbent and high water absorbent use, the hydrophobic combination of organic exhaust gas can be adsorbed as benzene,toluene,xylene etc. as high oil absorbent, hydrophilic composition can be absorbed as high water absorbent, immobilization can have saccharomycete or other microorganisms of exhaust gas decomposition function, thus the organic pollution in waste gas is adsorbed fully decompose utilization for microorganism afterwards, there is the dual-use function of organic exhaust gas adsorption+biodegradation integrated treatment.
In organic exhaust gas adsorption technique in the past, adsorbent select an important problem often, because its factor such as adsorption capacity, service life must be considered.New type resin of the present invention is a kind of permanent polymeric adsorbent, without the need to regeneration, can recycle, organic exhaust gas is adsorbed on resin, absorbed by the microorganism of apposition growth in resin hole, and convert it into harmless product, really solve sorbent life in present stage technique short, change the problem of difficulty.Yeast or other microbial immobilized cultivations will be degraded in resin, active carbon can be replaced to be used for the absorption+degradation treatment of waste gas, thoroughly solve the problem that the difficult use cost of regenerating active carbon is high.
Below in conjunction with embodiment, the present invention is further described.
Detailed description of the invention
Embodiment 1
Present embodiments provide a kind of preparation method of novel type polymeric adsorbent, comprise the following steps:
1, the preparation of saccharomycete suspension
Aseptically, be inoculated in respectively by the yeast strain oese of separation and purification in the triangular flask of the 250ml that 100ml screening and culturing base is housed, what the present embodiment adopted is YDP culture medium, 30 DEG C, 72h cultivated by 160rpm shaking table, obtains the saccharomycete suspension needed.
2, the preparation of gel particles:
Take 3.2g sodium alginate in small beaker, add sterilized water a little, furnishing pasty state, add remaining water (total amount is 100ml) again, nutriment is added again according to the ratio of the nutritional labeling of YDP culture medium, fire is heated to fusing, be cooled to normal temperature, adding polyethylene glycol and NaHCO3 again, in order to increase the intensity of gel particles, after this adding kaolin or calcium carbonate again, stirring makes it dissolve, finally draw with the syringe be connected with syringe needle, by the aperture of 1.5 ~ 2.0mm, drip to constant speed and fill 10%CaCl
2make gel beads in the plate of (crosslinking agent) solution, utilize magnetic stirring apparatus to stir simultaneously, make sodium alginate and cross-linking agent evenly, rapidly crosslinked, avoid the reaction of pore-foaming agent to cause the explosion of gel particles.
3, the formation of loose structure
By the gel particles purified rinse water for preparing several times, object is the calcium ion washing away gel particles surface, then is dropped into and be equipped with in the conical flask of pure water, and then put into autoclave sterilizing, sterilising temp and time are respectively 121 DEG C, 10min.Add pore-foaming agent during preparation due to gel particles, so in autoclaving process, pore-foaming agent can react, and makes gel particles grow up to loose structure.
4, saccharomycete enters in gel particles hole and grows
Taken out from conical flask by the gel particles of loose structure, put it into baking oven and carry out drying, temperature is 85 DEG C, dry 15min.Thrown in saccharomycete suspension again, shaking table 30 DEG C is cultivated 24 hours.
Embodiment 2-9 is substantially the same manner as Example 1, and its difference is: the weight ratio difference of sodium alginate, kaolin, CaCO3, NaHCO3, polyethylene glycol five kinds of compositions and the CaCl2 concentration of employing variable concentrations, in table 1.
The raw material composition of each embodiment of table 1
| Embodiment | Sodium alginate | Kaolin | CaCO3 | NaHCO3 | Polyethylene glycol | CaCl2 concentration |
| 1 | 3.2％ | 1％ | - | 3％ | 1％ | 10％ |
| 2 | 3.2％ | 2％ | - | 3％ | 2％ | 10％ |
| 4 3 | 3.2％ | 2％ | - | 3％ | 3％ | 10％ |
| 4 | 3.2％ | - | 1％ | 6％ | 1％ | 7％ |
| 5 | 3.2％ | - | 2％ | 6％ | 2％ | 7％ |
| 6 | 3.2％ | - | 2％ | 6％ | 3％ | 7％ |
| 7 | 3.2％ | 1％ | - | 6％ | 1％ | 5％ |
| 8 | 3.2％ | 2％ | - | 6％ | 2％ | 5％ |
| 9 | 3.2％ | 2％ | - | 6％ | 3％ | 5％ |
The observation of growth of microorganism situation
Macroscopic observation growth of microorganism situation, the results are shown in Table 2.
Table 2 each embodiment growth of microorganism situation
| Embodiment | Gel particles surface | Gel particles endoporus |
| 1 | Micro organism quantity is various | Microorganism is rare |
| 2 | Micro organism quantity is various | Microorganism does not have |
| 3 | Micro organism quantity is various | Microorganism does not have |
| 4 | Micro organism quantity is various | Microorganism is rare |
| 5 | Micro organism quantity is various | Microorganism is rare |
| 6 | Micro organism quantity is various | Microorganism is rare |
| 7 | Micro organism quantity is various | Micro organism quantity is many, more surperficial few |
| 8 | Micro organism quantity is various | Micro organism quantity is many, more surperficial few |
| 9 | Micro organism quantity is various | Micro organism quantity is many, more surperficial few |
The gel particles be immersed in bacteria suspension is taken out, removes the thalline on surface with aseptic water washing, then the bacterium liquid of its inside is squeezed out.Again microscopy is carried out to the bacterium liquid squeezed out, observe the population size of thalline.Result: the thalline of gel particles inside is 3000000-500000 number/ml.
(2) mensuration of water absorption rate
The gel particle of loose structure, after super-dry process, still has very strong water absorbing capacity, and substantially can recover its original graininess after water suction.Therefore, by it being dropped in water at this, the water absorption of gel particles can be determined by the difference of the water yield, and before dropping in water, we will weigh to it, then combine water absorption afterwards, thus determine the water absorption rate of gel particles, the results are shown in Table 3.
The water absorption rate of table 3 each embodiment porous gel grain
| Embodiment | Weight/g before dry | Weight/g after dry | Water absorption/ml after dry | Water absorption rate ml/g |
| 1 | 4.02 | 2.34 | 2.1 | 0.89 |
| 2 | 4.13 | 2.53 | 1.3 | 0.51 |
| 3 | 4.12 | 2.51 | 1.1 | 0.44 |
| 4 | 3.96 | 2.22 | 1.1 | 0.50 |
| 5 | 4.07 | 2.43 | 1.1 | 0.45 |
| 6 | 4.09 | 2.39 | 1.2 | 0.50 |
| 7 | 4.12 | 2.41 | 2.8 | 1.16 |
| 8 | 4.23 | 2.40 | 4.2 | 1.75 |
| 9 | 4.26 | 2.43 | 4.1 | 1.69 |
The present invention is not limited to above-mentioned embodiment, and every all equivalent embodiment that can realize the object of the invention, all within protection scope of the present invention.
Claims (3)
1. a preparation method for New Polymeric Adsorbent, is characterized in that, comprises following processing step:
(1) hydrophilic gel particle is prepared: by soluble in water for the nutritional labeling of sodium alginate, YDP culture medium, heating for dissolving, be cooled to room temperature, add sodium acid carbonate, polyethylene glycol again, add kaolin again, stirring makes it dissolve, finally draw with the syringe be connected with syringe needle, by the aperture of 1.5 ~ 2.0mm, drip in the plate filling 10% calcium chloride solution with constant speed and make Beads gel particles, utilize magnetic stirring apparatus to stir simultaneously, sodium alginate is contacted with calcium chloride evenly; Wherein described by weight sodium alginate 3.2%, kaolin 2%, sodium acid carbonate 6%, polyethylene glycol 1%;
(2) the hydrophilic gel particle of loose structure is prepared: the calcium ion gel particles pure water described in step (1) being washed away gel particles surface, gel particles put into the volumetric flask filling certain water yield afterwards and seal, be heated to 121 DEG C of autoclaving 10min, obtain porous gel grain;
(3) preparation is loaded with the New Polymeric Adsorbent of microorganism: by the porous gel grain described in step (2) in 85 DEG C, dry 15min, and cooling, throw in saccharomycete suspension, shaking table cultivates 24 hours, must be loaded with the New Polymeric Adsorbent of microorganism.
2. the preparation method of New Polymeric Adsorbent according to claim 1, it is characterized in that, described step (3) also comprises: the yeast strain oese of separation and purification to be inoculated in the triangular flask of the 250ml that 100ml YDP culture medium is housed 30 DEG C, 72h cultivated by 160rpm shaking table, obtains saccharomycete suspension.
3. the Novel adsorption type resin obtained by the preparation method of New Polymeric Adsorbent described in claim 1 is applied to the absorption of organic exhaust gas.
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| CN109046291A (en) * | 2018-09-12 | 2018-12-21 | 潘钕 | The preparation method of resin sorbent based on compound diatomite |
| CN109621695A (en) * | 2018-10-16 | 2019-04-16 | 许传高 | Tail gas treatment process during production of corn starch |
| CN110665469A (en) * | 2019-09-19 | 2020-01-10 | 广东工业大学 | Modified composite adsorbent and preparation method and application thereof |
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| CN1155010A (en) * | 1996-10-09 | 1997-07-23 | 广东省微生物研究所 | Fixed yeast xerogel bead and prepn. method thereof |
| CN101875928A (en) * | 2009-04-29 | 2010-11-03 | 中国环境科学研究院 | Embedding immobilization method for microbial preparation |
| CN101554485A (en) * | 2009-05-19 | 2009-10-14 | 天津大学 | Air purifying material of microorganism absorption degradation, preparation method and applications thereof |
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