CN102941068A - Preparation method of lead ion fungus chaff adsorbent and application - Google Patents
Preparation method of lead ion fungus chaff adsorbent and application Download PDFInfo
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- CN102941068A CN102941068A CN2012105316603A CN201210531660A CN102941068A CN 102941068 A CN102941068 A CN 102941068A CN 2012105316603 A CN2012105316603 A CN 2012105316603A CN 201210531660 A CN201210531660 A CN 201210531660A CN 102941068 A CN102941068 A CN 102941068A
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Abstract
The invention belongs to the technical field of environment, and particularly relates to a preparation method of lead ion fungus chaff adsorbent and application. The preparation of the adsorbent is that the dried, crushed and autoclaved fungus chaff is embedded into columnar particles with size of 2x5mm by 2.5% sodium alginate for treatment of lead ions in wastewater. The fungus chaff contains the ingredients such as a large number of mycelia, cellulose, hemicelluloses and lignin. In addition, the fungus chaff has a large specific surface area and a lot of anionic functional groups, and is easy to physically absorb heavy metal cations in the wastewater; the removal rate of processing the wastewater containing 50mg/L of lead ion by the adsorbent is over 80%; the removal rate of processing 10mg/L of wastewater containing copper ions is over 70%, and the removal rate of processing 10mg/L of wastewater containing zinc can be up to over 60%. The preparation method has the advantages that agricultural wastes are recycled, and the preparation method is applied to sewage treatment when environmental pollution is reduced, and the preparation method has the advantages of low cost, simplicity in operation, wide application range, high adsorption efficiency and the like, and can be widely applied to treatment of industrial wastewater in electrofacing, textile printing, tanning, metallurgy and the like.
Description
Technical field
The invention belongs to technical field of resource environments, for the bacterium chaff waste material in the Edible Fungi process, make adsorbent by preliminary treatment, the biological adsorption that is used for the low-concentration heavy metal pollutant effluents is administered technology, the present invention is applied to the improvement of water environment pollution when effectively reducing edible fungus bran self environmental pollution, realized the resource of agricultural wastes.
Background technology
The bacterium chaff refers to the edible fungus culturing rear discarded solid culture matrix of gathering, the compound of the compositions such as crude fibre that change by the residual body of hypha of edible fungus and through edible mushroom enzymolysis, structure.China's bacterium chaff annual production is 80-100 ten thousand t approximately, because it contains rich in protein and other nutrition, have certain value in agricultural production.At present, except a small amount of bacterium chaff is used as the animal and fowl fodder, major part arbitrarily abandons or stacks, and brings great hidden danger to Edible Fungi and environment.
Heavy metal along with the continuous expansion of China's economic development and exploitation scale is day by day serious, has caused that the public shows great attention to as the major pollutants of exploitation of mineral resources, metal smelt and metal processing activity.In case can not be biodegradable behind the heavy metal entered environment, and participate in often food chain circulation and finally in vivo accumulation, destroy organism normal physiological metabolic activity, be detrimental to health.Therefore, how effectively to process heavy metal wastewater thereby, reclaim precious metal and become a outstanding problem in the current field of Environment Protection.
The method of administering heavy metal polluted waste water comprises the various improvement methods such as ion-exchange, membrane separation process and method of chemical treatment, and these methods are applicable to the waste water that heavy metal ion content is higher than 100mg/L.Biosorption process (biosorption) is to utilize the chemical constitution of some organism itself and composition characteristic to adsorb metal ion soluble in water, and being separated by solid-liquid two removes the method for metal ion in the aqueous solution again.It is a kind of comparatively method of novel processing heavy metal-containing waste water, has caused gradually people's research interest because having efficient, cheap potential advantages.This novel method, suitable treatment large volume low concentration heavy metal water, even be reduced to ppb level level.Edible fungus bran is mainly become to be grouped into by mycelium, multiple metabolite and cellulose, hemicellulose and lignin etc.With the bacterium chaff as biological adsorption agent, mainly be to utilize the advantages such as the large and surperficial anionic functional group of bacterium chaff specific area is more, and bacterium chaff wide material sources, production cost is lower, preparation process is simple, adsorption efficiency is high, is highly suitable for removing heavy metal cation in the waste water as biological adsorption agent.
Summary of the invention
The purpose of this invention is to provide the biological treating method that a kind of cost is low, simple to operate, applied widely and adsorption efficiency is high fungus bran adsorbent is used for removing low-concentration heavy metal pollutant effluents lead ion.
For achieving the above object, the technical solution used in the present invention is:
The preparation method who is used for the adsorbent of removal low-concentration heavy metal polluted-water lead ion: will put into the freeze-day with constant temperature incubator without the bacterium chaff of living contaminants, 60-80 ℃ of oven dry 12 h fully pulverize rear mistake 20 mesh sieves to constant weight with pulverizer.With the bacterium chaff that is sieved after 121 ℃ of steam under pressure sterilizations, in making 2.5% sodium alginate soln behind 1:1 ratio and the sodium alginate mixing, then this solution is added drop-wise to calcification 30min in 4% calcium chloride solution of 4 ℃ of precoolings, the microballoon (diameter is about 3mm) after the calcification is collected in filtration, has both got fungus bran adsorbent after the air drying and has seen accompanying drawing 1.
Fungus bran adsorbent is processed Pb in the low-concentration heavy metal polluted-water
2+Method be:
Take by weighing the 5-50g fungus bran adsorbent and be added to 1000mLPb
2+Concentration is in the sewage of 20-300mg/L, is 50-150rpm at pH3-7,5-30 ℃, mixing speed, after 30-90 minute absorption, and the Pb in the water body more than 90%
2+In can be adsorbed (the results are shown in accompanying drawing 2).The mensuration of adsorption rate and adsorption capacity adopts Atomic Absorption Spectrometer, and adsorption rate (%) is calculated as follows:
Residual lead content is calculated as follows:
In the formula, R is adsorption rate (%); ρ
0(mg/L) be the lead ion initial concentration; Plumbum ion concentration in solution when ρ (mg/L) is adsorption equilibrium; Q (mgL
-1) be residual lead content; V is sewage volume (L).Experiment repeats 3 times, all uses without the sewage of adsorbent at every turn and tests in contrast under similarity condition, the error that causes thereby the eliminating background is adsorbed.
Advantage of the present invention and good effect
1. the present invention prepares the heavy metal cation adsorbent with the discarded culture matrix bacterium chaff of agricultural production, and raw material sources are abundant, and production technology is simple, and is with low cost, and rationally utilized agricultural wastes, eliminated pollution sources.
2. the fungus bran adsorbent of the present invention preparation, mainly utilize the anionic group of cellulose, hemicellulose and lignin and mycelium protein surface in wood chip and the Mycelium composition to the suction-operated of the metal cation in the sewage, therefore this adsorbent scope of application is wider, can remove the cationic pollution (Pb of low-concentration heavy metal in the various water bodies
2+, Zn
2+, Cu
2+); Applicability of the present invention shows also that extensively temperature and the pH scope of processing water body are wider, is respectively 5-30 ℃ and 3-7.
The present invention have also that adsorption efficiency is high, good stability, the advantage such as renewable.Be embodied in and all can reach more than 60% for the adsorption efficiency under various metal cations and the treatment conditions; Even if flat mushroom fungus bran adsorbent of the present invention reach absorption saturated after, in water body, retain desorption also seldom occured more than 7 days.
Description of drawings
Accompanying drawing 1-A bacterium bran powder surface sweeping electromicroscopic photograph accompanying drawing 1-B fungus bran adsorbent particle
Adsorption rate and residual lead changes of contents under the accompanying drawing 2 different disposal conditions
Infrared spectrum changes (A is for before adsorbing, after B is absorption) before and after the accompanying drawing 3 flat mushroom bacterium chaff Adsorption of Leads
Infrared spectrum changes (A is for before adsorbing, after B is absorption) before and after the accompanying drawing 4 mushroom bacterium chaff Adsorption of Leads
Infrared spectrum changes (A is for before adsorbing, after B is absorption) before and after the accompanying drawing 5 golden mushroom chaff Adsorption of Leads
Infrared spectrum changes (A is for before adsorbing, after B is absorption) before and after the accompanying drawing 6 black fungus bacterial chaff Adsorption of Leads
Infrared spectrum changes (A is for before adsorbing, after B is absorption) before and after the accompanying drawing 7 flat mushroom bacterium chaff absorbing coppers
Infrared spectrum variation before and after the accompanying drawing 8 flat mushroom bacterium chaffs absorption zinc (A is for before adsorbing, and B is rear for absorption)
Further specify the present invention below by embodiment, the present invention is not limited only to described embodiment.
The specific embodiment
Embodiment one
This example adopts flat mushroom bacterium chaff as biological adsorption agent, is 5 at pH, temperature is that 30 ℃, mixing speed are that 150rpm, time are 30min, lead ion (Pb
2+) concentration is 50mg/L, adds into 10g bacterium bran powder in every liter of waste water, can remove 93% lead ion, bacterium chaff infrared spectrogram is seen accompanying drawing 3 before and after the absorption.
Embodiment two
This example adopts mushroom bacterium chaff as biological adsorption agent, is 5 at pH, temperature is that 20 ℃, mixing speed are 150rpm, time to be 2 h, lead ion (Pb
2+) concentration is 50mg/L, adds into 30g bacterium bran powder in every liter of waste water, can remove 82% lead ion, bacterium chaff infrared spectrogram is seen accompanying drawing 4 before and after the absorption.
Embodiment three
This example adopts the golden mushroom chaff as biological adsorption agent, is 5 at pH, temperature is that 15 ℃, mixing speed are 120rpm, time to be 1 h, lead ion (Pb
2+) concentration is 100mg/L, adds into 5g bacterium bran powder in every liter of waste water, can remove 80% lead ion, bacterium chaff infrared spectrogram is seen accompanying drawing 5 before and after the absorption.
Embodiment four
This example adopts the black fungus bacterial chaff as biological adsorption agent, is 5 at pH, temperature is that 25 ℃, mixing speed are 180rpm, time to be 3 h, lead ion (Pb
2+) concentration is 50mg/L, adds into 5g bacterium bran powder in every liter of waste water, can remove 89% lead ion, bacterium chaff infrared spectrogram is seen accompanying drawing 6 before and after the absorption.
Embodiment five
This example adopts flat mushroom bacterium chaff as biological adsorption agent, is 5 at pH, temperature is that 30 ℃, mixing speed are 150rpm, time to be 1h, copper ion (Cu
2+) concentration is 10mg/L, adds into 10g bacterium bran powder in every liter of waste water, can remove 75% copper ion, bacterium chaff infrared spectrogram is seen accompanying drawing 7 before and after the absorption.
Embodiment six
This example adopts flat mushroom bacterium chaff as biological adsorption agent, is 5 at pH, temperature is that 30 ℃, mixing speed are 150rpm, time to be 2 h, zinc ion (Zn
2+) concentration is 10mg/L, adds into 5g bacterium bran powder in every liter of waste water, can remove 68% zinc ion, bacterium chaff infrared spectrogram is seen accompanying drawing 8 before and after the absorption.
Claims (9)
1. this invention is a kind of preparation method and application of lead ion fungus bran adsorbent, it is characterized in that bacterium chaff waste material made adsorbent and is applied to remove the lead ion of low concentration in the polluted-water.
2. the biological treating method of low-concentration heavy metal cation contamination water body according to claim 1 is characterized in that used biological treating material is the waste solid culture matrix behind the edible fungus culturing.
3. the biological treating method of low-concentration heavy metal cation contamination water body according to claim 1 is characterized in that the edible fungus bran of removing water pollutant only need to become solid particle namely to can be used for the improvement of polluted-water through super-dry, pulverizing, autoclaving and 2.5% sodium alginate to embed.
4. the bioremediation Technology of water pollution according to claim 1 is characterized in that the plumbum ion concentration in the described low-concentration heavy metal polluted-water is 20-300mg/L.
5. the biological treating method of low-concentration heavy metal ions polluted-water according to claim 1, the processing time that it is characterized in that described fungus bran adsorbent is 30-60 min.
6. the biological treating method of low-concentration heavy metal ions polluted-water according to claim 1, the dosage that it is characterized in that fungus bran adsorbent in the described polluted-water is 5-50g/L.
7. the biological treating method of low-concentration heavy metal ions polluted-water according to claim 1 is characterized in that described adsorption temp is 5-30 ℃.
8. the biological treating method of low-concentration heavy metal ions polluted-water according to claim 1 is characterized in that the mixing speed of described fungus bran adsorbent when absorption is 50-200rpm.
9. the biological treating method of low-concentration heavy metal ions polluted-water according to claim 1, the pH that it is characterized in that described polluted-water is 3-7.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106179247A (en) * | 2016-08-08 | 2016-12-07 | 东北农业大学 | A kind of Cr VI adsorbent and its preparation method and application |
| CN109078615A (en) * | 2018-09-14 | 2018-12-25 | 徐州工程学院 | A kind of modification biological adsorbent and preparation method thereof |
| US10668416B2 (en) | 2014-08-15 | 2020-06-02 | Strix (Usa), Inc. | Granular filtration media mixture and uses in water purification |
| CN111847567A (en) * | 2020-07-24 | 2020-10-30 | 温州大学 | Method for adsorbing lead ions in wastewater |
| CN112520812A (en) * | 2020-12-16 | 2021-03-19 | 河南省科学院生物研究所有限责任公司 | Method for effectively removing heavy metal lead in wastewater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733075A (en) * | 2008-11-07 | 2010-06-16 | 中国科学院沈阳应用生态研究所 | Preparation method of modified fungus bran adsorbent for discoloring dye waste water |
| CN102107926A (en) * | 2011-01-06 | 2011-06-29 | 中国科学院合肥物质科学研究院 | Method for preparing natural material adsorbent for treating printing/dyeing waste water by using biological corrosion process |
-
2012
- 2012-12-12 CN CN2012105316603A patent/CN102941068A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733075A (en) * | 2008-11-07 | 2010-06-16 | 中国科学院沈阳应用生态研究所 | Preparation method of modified fungus bran adsorbent for discoloring dye waste water |
| CN102107926A (en) * | 2011-01-06 | 2011-06-29 | 中国科学院合肥物质科学研究院 | Method for preparing natural material adsorbent for treating printing/dyeing waste water by using biological corrosion process |
Non-Patent Citations (1)
| Title |
|---|
| 孙玉寒等: "食用菌菌糠对重金属离子的吸附性", 《西安工程大学学报》, vol. 25, no. 1, 28 February 2011 (2011-02-28), pages 51 - 54 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10668416B2 (en) | 2014-08-15 | 2020-06-02 | Strix (Usa), Inc. | Granular filtration media mixture and uses in water purification |
| CN106179247A (en) * | 2016-08-08 | 2016-12-07 | 东北农业大学 | A kind of Cr VI adsorbent and its preparation method and application |
| CN106179247B (en) * | 2016-08-08 | 2019-01-01 | 东北农业大学 | A kind of Cr VI adsorbent and its preparation method and application |
| CN109078615A (en) * | 2018-09-14 | 2018-12-25 | 徐州工程学院 | A kind of modification biological adsorbent and preparation method thereof |
| CN109078615B (en) * | 2018-09-14 | 2021-03-26 | 徐州工程学院 | Modified biological adsorbent and preparation method thereof |
| CN111847567A (en) * | 2020-07-24 | 2020-10-30 | 温州大学 | Method for adsorbing lead ions in wastewater |
| CN112520812A (en) * | 2020-12-16 | 2021-03-19 | 河南省科学院生物研究所有限责任公司 | Method for effectively removing heavy metal lead in wastewater |
| CN112520812B (en) * | 2020-12-16 | 2023-01-24 | 河南省科学院生物研究所有限责任公司 | Method for effectively removing heavy metal lead in wastewater |
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Application publication date: 20130227 |