CN103949224A - Trichoderma aureoviride particle adsorbent for treating uranium-bearing wastewater as well as preparation method and application of absorbent - Google Patents
Trichoderma aureoviride particle adsorbent for treating uranium-bearing wastewater as well as preparation method and application of absorbent Download PDFInfo
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Abstract
The invention relates to a trichoderma aureoviride particle adsorbent for treating uranium-bearing wastewater as well as a preparation method and application of the absorbent, and belongs to the technical field of production and manufacturing of a sewage treatment material. The adsorbent is prepared from trichoderma aureoviride fungus purely-cultured viable bacteria, corncob particles and an embedding agent and is 4mm-6mm in particle size; the preparation method comprises the following steps: culturing the trichoderma aureoviride bacteria and washing with sterile water to obtain conidium suspension liquid; washing, drying and crushing corncobs, and then sieving the particles of which the particle size is 1mm-2mm; and adsorbing, embedding, culturing and freeze-drying conidiums to obtain the trichoderma aureoviride particle adsorbent. The application is as follows: the trichoderma aureoviride particle adsorbent is added into a uranium-bearing water solution, and then the vibration and the adsorption are performed. The particle adsorbent prepared by adopting the method disclosed by the invention is low in cost, simple and convenient to operate, free of secondary pollution, liable to separate from the water solution, reusable, and capable of being used for effectively adsorbing and recycling uranium ions in the water solution.
Description
Technical field
The invention belongs to s Absorbent and preparation thereof and application, particularly a kind of yellow green trichoderma granule adsorbent and preparation and application thereof of processing uranium-containing waste water.
Background technology
It is an emerging research field that biosorption process is processed heavy metal-containing waste water.Biosorption process is as a new technology processing heavy metal pollution, technology similar with other compared as evaporation, chemical precipitation, charcoal absorption, ion exchange resin electrodialysis etc., have that absorption cost is low, efficiency is high, can not cause the features such as secondary pollution, having broad application prospects processing aspect heavy metal-containing waste water.Large quantity research shows, multiple-microorganism all can be used to the biological adsorption of heavy metal ion as bacterium, fungi and algae etc.Wherein filamentous fungi as
rhizopus arrhizus,
penicillium chrysogenum,
trichoderma viride,
aspergillus nigerdeng being proved to be Cu
2+, Cr
6+, Pb
2+, Ni
2+, Cd
2+, Zn
2+have stronger adsorption capacity Deng many kinds of metal ions, have simultaneously safety, output high, be easy to cultivate and the good characteristic of growth.
Except above good characteristic, from the viewpoint of operation possibility and economy, microbial adsorbent also should have following condition: desirable granularity, shape, mechanical strength, to apply in continuous-flow system; Cheap aqueous solution two-phase separation property efficiently, fast; Reusability, and when regeneration adsorbent loss amount little, adsorbance is unaffected etc.Microbial cell immobilization processing is one of major technique successfully realizing above condition.Immobilization technology be utilize chemistry or the means of physics free cell is positioned to the area of space limiting, and make it to become and be not suspended in water and still keep biologically active, and the method that can recycle.Compared with free cell, immobilized cell has that efficiency is higher, stability is strong, reaction is easy to control, bacterial classification high-purity efficient, microorganism concn is high, sludge quantity is few, good effect of separating solid from liquid, the active advantages such as forfeiture that are difficult for, in environment bioengineering, more and more receive publicity.At present the immobilization of microbial cell is mainly adopted to single carrier, comprise sodium alginate, polyvinyl alcohol, polyacrylamide, Polyurethane, diatomite etc.The present invention, in order further to improve the performance of immobilization particle, has adopted two carrier fixations---and taking cheap corn cob granule as core carrier, the sodium alginate that is aided with low concentration carries out embedding, has reached good effect.
Trichoderma aureoviride is that a class is adaptable, and growth rapidly, can efficiently utilize a cellulosic class filamentous fungi.Up to now, to the ability of the heavy metal ion such as uranium in the yellow green trichoderma adsorption aqueous solution of immobilization processing, there is not yet relevant report both at home and abroad.
Summary of the invention
This technical problem to be solved is to provide
a kind of yellow green trichoderma granule adsorbent and preparation and application thereof of processing uranium-containing waste water, this invention is with low cost, manufacturing process is simple, the adsorbent mechanical strength that obtains high, be easy to realize and two being separated of the aqueous solution, reusable, uranium-containing waste water is had to good treatment effect.
A yellow green trichoderma granule adsorbent of processing uranium-containing waste water, is characterized in that comprising following raw materials according: Trichoderma aureoviride conidium suspension concentration is 10
6individual/ml, use amount is 10ml, corn cob granule 0.15g, yellow green trichoderma granule adsorbent particle diameter is 4-6mm.
The preparation method of described Trichoderma aureoviride conidium suspension is: Trichoderma aureoviride is seeded to PDA solid medium, 28 DEG C leave standstill cultivation 5-6d to producing conidium, with 5ml sterile distilled water washing thalline surface, make conidium suspension, with sterile distilled water adjusting spore concentration to 10
6individual/ml.
The particle diameter of described corn cob granule is preferably 1-2mm.
The preparation method of described corn cob granule is: corncob is washed with clear water, and 60 DEG C of oven dry 12h of drying box, to constant weight, pulverize corncob with pulverizer, screen the particle of particle diameter at 1-2mm, 121 DEG C of high pressure steam sterilization 30min, and room temperature is cooling.
A kind of preparation method of the yellow green trichoderma granule adsorbent of processing uranium-containing waste water: Trichoderma aureoviride is seeded to PDA solid medium, 28 DEG C leave standstill cultivation 5-6d to producing conidium, with 5ml sterile distilled water washing thalline surface, make conidium suspension, with sterile distilled water adjusting spore concentration to 10
6individual/ml; Corncob is washed with clear water, and 60 DEG C of oven dry 12h of drying box, to constant weight, pulverize corncob with pulverizer, screen the particle of particle diameter at 1-2mm, 121 DEG C of high pressure steam sterilization 30min, and room temperature is cooling; Under aseptic condition, in 50ml centrifuge tube, add 0.15g corn cob granule, add 10ml conidium suspension, after slight concussion mixes, room temperature leaves standstill 48h, and conidium is about 6 × 10 in the adsorbance on corn cob granule surface
7individual conidium/g; To adsorb conidial corn cob granule, and transfer to 10ml mass fraction and be in 1% sodium alginate soln, room temperature leaves standstill 30min, then corn cob granule is transferred to 10ml mass fraction and be 5% CaCl
2in solution, room temperature leaves standstill after 20min, joins in the physiological saline of 10ml mass fraction 0.9%, and room temperature concussion 2min, crosses leaching corn cob granule, repeated washing 1 time; The corn cob granule of the yellowish green trichoderma conidium of embedding is added in 100ml PD fluid nutrient medium, 28 DEG C, 48h is cultivated in 130r/min concussion, filter, obtain particle culture, obtained particle culture is put into freeze drier, and under-65 DEG C of conditions, dry 72h, obtains yellow green trichoderma granule adsorbent.
A kind of application of the yellow green trichoderma granule adsorbent of processing uranium-containing waste water, the method of processing uranium-containing waste water is: the pH that regulates pending uranium-containing waste water is 3.28-8.63, then add granule adsorbent, concussion, absorption, wherein the concentration of uranium-containing waste water is 25 μ g/ml, the ratio of uranium-containing waste water and adsorbent is 50ml:0.03g, adsorption temp is 14-30 DEG C, and adsorption time is 0.5h-24h, and concussion speed is 145r/min.
Described adjusting pH value is the HCl/NaOH solution regulator solution pH with 0.1mol/L.
Described pH preferably 6.23.
Preferably 28 DEG C of described temperature, the preferred 6h of adsorption time.
Beneficial effect of the present invention
(1) the yellow green trichoderma granule adsorbent that prepared by the present invention is with low cost, and preparation method is easy, and stability is strong, and good effect of separating solid from liquid is reusable, can not cause secondary pollution;
(2) yellow green trichoderma granule adsorbent of the present invention is high to the adsorption rate of uranium ion in uranium-containing waste water, advantages of good adsorption effect.
Brief description of the drawings
Fig. 1: the impact of pH value on uranium ion in adsorbent adsorption aqueous solution;
Fig. 2: the impact of adsorption time on uranium ion in adsorbent adsorption aqueous solution;
Fig. 3: the impact of temperature on uranium ion in adsorbent adsorption aqueous solution;
Fig. 4: the impact of ionic strength on uranium ion in adsorbent adsorption aqueous solution;
Fig. 5: the stereoscan photograph of yellow green trichoderma granule adsorbent;
Fig. 6: the stereoscan photograph in yellow green trichoderma granule adsorbent adsorption aqueous solution after uranium ion.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings 1,2,3,4,5,6, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
Yellow green trichoderma is seeded to PDA solid medium, and 28 DEG C leave standstill cultivation 5-6d to producing conidium, with 5ml sterile distilled water washing thalline surface, make conidium suspension, with sterile distilled water adjusting spore concentration to 10
6individual/ml.Corncob is washed with clear water, and 60 DEG C of oven dry 12h of drying box, to constant weight, pulverize corncob with pulverizer, screen the particle of particle diameter at 1-2mm, 121 DEG C of high pressure steam sterilization 30min, and room temperature is cooling.Under aseptic condition, in 50ml centrifuge tube, add 0.15g corn cob granule, add 10ml conidium suspension, after slight concussion mixes, room temperature leaves standstill 48h, and conidium is about 6 × 10 in the adsorbance on corn cob granule surface
7individual conidium/g.To adsorb conidial corn cob granule, and transfer to 10ml mass fraction and be in 1% sodium alginate soln, room temperature leaves standstill 30min, then corn cob granule is transferred to 10ml mass fraction and be 5% CaCl
2in solution, room temperature leaves standstill after 20min, joins in the physiological saline of 10ml mass fraction 0.9%, and room temperature concussion 2min, crosses leaching corn cob granule, repeated washing 1 time.The corn cob granule of the yellowish green trichoderma conidium of embedding is added in 100ml PD fluid nutrient medium, and 28 DEG C, 48h is cultivated in 130r/min concussion, filters, and obtains particle culture.Obtained particle culture is put into freeze drier, and under-65 DEG C of conditions, dry 72h, obtains yellow green trichoderma granule adsorbent.
The Trichoderma aureoviride strain that the present invention uses is the bacterial strain in bibliography [1].The preparation method of the yellow green trichoderma granule adsorbent described in this invention is not limited only to the bacterial strain using in this invention, is also applicable to the published or laboratory various Trichoderma aureoviride strains of preservation voluntarily both at home and abroad.
[1] Yang Qian, Dongmei SUN, Zhang Jing. the breeding research of Trichoderma aureoviride Protoplast Mutation. microbiology circular. 2005,32 (4): 62 ~ 67.
The granule adsorbent preparing with embodiment 1 carries out the adsorption experiment of uranium ion in the removal aqueous solution in following examples 2-5.
Embodiment 2
Accurately pipette 50ml, the uranium mark solution of 25 μ g/ml, in the conical flask of 150ml, by the HCl/NaOH adjusting pH value of 0.1mol/L, makes pH value between 3.28-8.63.Add the yellow green trichoderma granule adsorbent of 0.03g, at 28 DEG C, on the constant temperature oscillator of 145r/min, adsorb 12h.The centrifugal 5min of 13000r/min room temperature, gets supernatant, measures the concentration of uranium ion in solution with Arsenazo Ⅲ Photometric Method.
The adsorbance of uranium ion is calculated (lower same) according to following formula:
In formula:
q e -adsorbance, mg/g;
vthe volume of-uranium solution, L;
c e -uranium ion solution equilibria concentration, mg/L;
c 0 -uranium ion initial concentration solution, mg/L;
m-adsorbent mass, g.
Result is as shown in table 1:
The yellow green trichoderma granule adsorbent of table 1 adsorption effect to uranium ion under different pH condition
| PH value | 3.28 | 4.29 | 4.95 | 5.82 | 6.23 | 6.68 | 7.08 | 7.73 | 8.35 | 8.63 |
| Adsorbance (mg/g) | 25.55 | 24.33 | 26.57 | 27.79 | 38.56 | 29.21 | 35.31 | 31.04 | 30.22 | 30.22 |
As shown in Table 1, pH value is 6.23 o'clock, and best to the adsorption effect of uranium ion, adsorbance reaches 38.56mg/g, and therefore in following examples, pH is all set to 6.23.
Embodiment 3
Accurately pipette 50ml, the uranium mark solution of 25 μ g/ml is placed in the conical flask of 150ml, by the HCl/NaOH adjusting pH value of 0.1mol/L, making pH value is 6.23, then adds the yellow green trichoderma granule adsorbent of 0.03g, at 28 DEG C, on the constant temperature oscillator of 145r/min, adsorb after certain hour, the centrifugal 5min of 13000r/min room temperature, gets supernatant, measures the concentration of uranium ion in solution with Arsenazo Ⅲ Photometric Method.Result is as shown in table 2:
The yellow green trichoderma granule adsorbent of table 2 is the adsorption effect to uranium ion at different adsorption times
| Adsorption time (h) | 0.5 | 1 | 2 | 3 | 4 | 6 | 8 | 10 | 12 | 24 |
| Adsorbance (mg/g) | 11.93 | 13.15 | 13.96 | 15.79 | 16.61 | 16.83 | 16.61 | 17.44 | 18.23 | 17.83 |
As shown in table 2, when adsorption time is 6h, absorption reaches balance substantially, and therefore the Best Times of absorption is 6h.
Embodiment 4
Accurately pipette 50ml, the uranium mark solution of 25 μ g/ml is placed in the conical flask of 150ml, by the HCl/NaOH adjusting pH value of 0.1mol/L, making pH value is 6.23, then adds the yellow green trichoderma granule adsorbent of 0.03g, at a certain temperature, on the constant temperature oscillator of 145r/min, adsorb after 6h, the centrifugal 5min of 13000r/min room temperature, gets supernatant, measures the concentration of uranium ion in solution with Arsenazo Ⅲ Photometric Method.Result is as shown in table 3:
The yellow green trichoderma granule adsorbent of table 3 adsorption effect to uranium ion under different temperatures
| Temperature (DEG C) | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 |
| Adsorbance (mg/g) | 17.46 | 20.10 | 22.13 | 21.93 | 21.52 | 22.34 | 24.37 | 28.23 | 28.23 |
As shown in Table 3, with the rising of temperature, yellow green trichoderma granule adsorbent is in rising trend to the absorption of uranium ion, and in the time that temperature reaches 28 DEG C, adsorbent is best to the adsorption effect of uranium ion.
Embodiment 5
Accurately pipette 50ml, contain finite concentration NaClO
3and the uranium mark solution of 25 μ g/ml is placed in the conical flask of 150ml, by the HCl/NaOH adjusting pH value of 0.1mol/L, making pH value is 6.23, then add the yellow green trichoderma granule adsorbent of 0.03g, at 28 DEG C, on the constant temperature oscillator of 145r/min, adsorb after 6h the centrifugal 5min of 13000r/min room temperature, get supernatant, measure the concentration of uranium ion in solution with Arsenazo Ⅲ Photometric Method.Result is as shown in table 4:
The yellow green trichoderma granule adsorbent of table 4 adsorption effect to uranium ion under different ionic strength
| NaClO 3Concentration (mol/l) | 0.01 | 0.03 | 0.05 | 0.1 | 0.2 | 0.3 |
| Adsorbance (mg/g) | 12.95 | 15.18 | 11.73 | 10.31 | 10.10 | 3.39 |
As shown in Table 4, yellow green trichoderma granule adsorbent is subject to NaClO to the suction-operated of uranium ion
3the impact of concentration.With NaClO in solution
3the rising of concentration, adsorbent declines gradually to the adsorbance of uranium ion.Show in application, should avoid the impact of other ion pair adsorption effect existing in solution as far as possible.
Claims (9)
1. a yellow green trichoderma granule adsorbent of processing uranium-containing waste water, is characterized in that comprising following raw materials according: Trichoderma aureoviride conidium suspension concentration is 10
6individual/ml, use amount is 10ml, corn cob granule 0.15g, yellow green trichoderma granule adsorbent particle diameter is 4-6mm.
2. a kind of yellow green trichoderma granule adsorbent of processing uranium-containing waste water according to claim 1, the preparation method who it is characterized in that Trichoderma aureoviride conidium suspension is: Trichoderma aureoviride is seeded to PDA solid medium, 28 DEG C leave standstill cultivation 5-6d to producing conidium, with 5ml sterile distilled water washing thalline surface, make conidium suspension, with sterile distilled water adjusting spore concentration to 10
6individual/ml.
3. a kind of yellow green trichoderma granule adsorbent of processing uranium-containing waste water according to claim 1, is characterized in that the particle diameter of described corn cob granule is preferably 1-2mm.
4. a kind of yellow green trichoderma granule adsorbent of processing uranium-containing waste water according to claim 1, the preparation method who it is characterized in that corn cob granule is: corncob clear water is washed, 60 DEG C of oven dry 12h of drying box are to constant weight, corncob is pulverized with pulverizer, screening particle diameter is at the particle of 1-2mm, 121 DEG C of high pressure steam sterilization 30min, room temperature is cooling.
5. the preparation method of the yellow green trichoderma granule adsorbent of a processing uranium-containing waste water claimed in claim 1, it is characterized in that: Trichoderma aureoviride is seeded to PDA solid medium, 28 DEG C leave standstill cultivation 5-6d to producing conidium, with 5ml sterile distilled water washing thalline surface, make conidium suspension, with sterile distilled water adjusting spore concentration to 10
6individual/ml; Corncob is washed with clear water, and 60 DEG C of oven dry 12h of drying box, to constant weight, pulverize corncob with pulverizer, screen the particle of particle diameter at 1-2mm, 121 DEG C of high pressure steam sterilization 30min, and room temperature is cooling; Under aseptic condition, in 50ml centrifuge tube, add 0.15g corn cob granule, add 10ml conidium suspension, after slight concussion mixes, room temperature leaves standstill 48h, and conidium is about 6 × 10 in the adsorbance on corn cob granule surface
7individual conidium/g; To adsorb conidial corn cob granule, and transfer to 10ml mass fraction and be in 1% sodium alginate soln, room temperature leaves standstill 30min, then corn cob granule is transferred to 10ml mass fraction and be 5% CaCl
2in solution, room temperature leaves standstill after 20min, joins in the physiological saline of 10ml mass fraction 0.9%, and room temperature concussion 2min, crosses leaching corn cob granule, repeated washing 1 time; The corn cob granule of the yellowish green trichoderma conidium of embedding is added in 100ml PD fluid nutrient medium, 28 DEG C, 48h is cultivated in 130r/min concussion, filter, obtain particle culture, obtained particle culture is put into freeze drier, and under-65 DEG C of conditions, dry 72h, obtains yellow green trichoderma granule adsorbent.
6. the application of an a kind of yellow green trichoderma granule adsorbent of processing uranium-containing waste water as claimed in claim 1, it is characterized in that the method for processing uranium-containing waste water is: the pH that regulates pending uranium-containing waste water is 3.28-8.63, then add granule adsorbent, concussion, absorption, wherein the concentration of uranium-containing waste water is 25 μ g/ml, the ratio of uranium-containing waste water and adsorbent is 50ml:0.03g, adsorption temp is 14-30 DEG C, and adsorption time is 0.5h-24h, and concussion speed is 145r/min.
7. the application of a kind of yellow green trichoderma granule adsorbent of processing uranium-containing waste water according to claim 6, is characterized in that: described adjusting pH value is the HCl/NaOH solution regulator solution pH with 0.1mol/L.
8. the application of a kind of yellow green trichoderma granule adsorbent of processing uranium-containing waste water according to claim 6, is characterized in that: described pH preferably 6.23.
9. the application of a kind of yellow green trichoderma granule adsorbent of processing uranium-containing waste water according to claim 6, is characterized in that: preferably 28 DEG C of described temperature, the preferred 6h of adsorption time.
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Cited By (5)
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| CN108408920A (en) * | 2018-03-15 | 2018-08-17 | 湖南大学 | A method of utilizing Penicillium notatum composite degradation malachite green wastewater |
| PL427073A1 (en) * | 2018-09-14 | 2019-02-25 | Uniwersytet Mikołaja Kopernika | Method for obtaining biological preparation of fungal origin, accelerating degradation of polymer plastics and the biological preparation |
| CN109652460A (en) * | 2018-12-29 | 2019-04-19 | 东北林业大学 | A kind of method that the hook-shaped reesei spores of fixation prepare Cr (VI) reducing agent |
| CN110153177A (en) * | 2019-03-08 | 2019-08-23 | 中国科学院广州地球化学研究所 | A method of polycyclic aromatic hydrocarbon pollution is repaired using fungi |
| CN117696020A (en) * | 2024-02-04 | 2024-03-15 | 四川宇阳环境工程有限公司 | Material for treating complex environmental mud phase pollutants based on solid waste and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408920A (en) * | 2018-03-15 | 2018-08-17 | 湖南大学 | A method of utilizing Penicillium notatum composite degradation malachite green wastewater |
| CN108408920B (en) * | 2018-03-15 | 2021-06-29 | 湖南大学 | Method for degrading malachite green wastewater by using penicillium composite material |
| PL427073A1 (en) * | 2018-09-14 | 2019-02-25 | Uniwersytet Mikołaja Kopernika | Method for obtaining biological preparation of fungal origin, accelerating degradation of polymer plastics and the biological preparation |
| PL237050B1 (en) * | 2018-09-14 | 2021-03-08 | Univ Mikolaja Kopernika | Method for obtaining biological preparation of fungal origin, accelerating degradation of polymer plastics and the biological preparation |
| CN109652460A (en) * | 2018-12-29 | 2019-04-19 | 东北林业大学 | A kind of method that the hook-shaped reesei spores of fixation prepare Cr (VI) reducing agent |
| CN109652460B (en) * | 2018-12-29 | 2022-04-15 | 东北林业大学 | Method for preparing Cr (VI) reducing agent by fixing trichoderma hamatum spores |
| CN110153177A (en) * | 2019-03-08 | 2019-08-23 | 中国科学院广州地球化学研究所 | A method of polycyclic aromatic hydrocarbon pollution is repaired using fungi |
| CN110153177B (en) * | 2019-03-08 | 2020-07-31 | 中国科学院广州地球化学研究所 | Method for repairing polycyclic aromatic hydrocarbon polluted soil by using fungi |
| CN117696020A (en) * | 2024-02-04 | 2024-03-15 | 四川宇阳环境工程有限公司 | Material for treating complex environmental mud phase pollutants based on solid waste and preparation method |
| CN117696020B (en) * | 2024-02-04 | 2024-04-05 | 四川宇阳环境工程有限公司 | Material for treating complex environmental mud phase pollutants based on solid waste and preparation method |
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