CN1986432A - Preparing process of bacterial cellulose suspension for adsorbing organic pollutant - Google Patents
Preparing process of bacterial cellulose suspension for adsorbing organic pollutant Download PDFInfo
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- CN1986432A CN1986432A CN 200610119083 CN200610119083A CN1986432A CN 1986432 A CN1986432 A CN 1986432A CN 200610119083 CN200610119083 CN 200610119083 CN 200610119083 A CN200610119083 A CN 200610119083A CN 1986432 A CN1986432 A CN 1986432A
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Abstract
The present invention discloses preparation process of bacterial cellulose suspension for adsorbing organic pollutant. The preparation process includes the following steps: 1. setting wet bacterial cellulose film in 1-10 wt% concentration alkali solution, heating at 50-100 deg.c for 20-60 min to eliminate tropina, and washing with deionized water and 0.1-1 wt% concentration acid solution; 2. puling the purified bacterial cellulose in a pulping machine at rotation speed of 300-500 rpm for 5-15 min to form emulsion; and 3. centrifuging the emulsion in a centrifuge at rotation speed of 100-700 rpm and separating the supernatant to obtain bacterial cellulose suspension. The present invention has the advantages of no harm to environment and the operator, simple process, fast adsorption rate and high adsorption effect.
Description
Technical field
The present invention relates to a kind of preparation method of bacterial cellulose suspension of effective improvement organic waste water, particularly relate to a kind of preparation method who is adsorbed with the bacterial cellulose suspension of organic pollutants.
Background technology
Organic pollutant is meant and enters and the organic compound of contaminate environment, remains in the deleterious organic pollutants such as agricultural chemicals, dyestuff, Dioxins of occurring in nature, always all is to allow the hang-up of countries in the world scientific research and environmental protection mechanism headache.Occurring in nature to the harm of human body and physical environment bigger flavacin, ergot, Dioxins, dyestuff, washing composition, agricultural chemicals, plastics etc. are arranged.The difficult degradation in physical environment of these organism, residence time are extremely long, are difficult for decomposing being taken in the back by organism, concentrate along food chain and amplify, and can very easily cause global range to be polluted if deal with improperly in the migration of atmospheric environment medium and long distance.That a lot of persistence organic pollutants not only have is carcinogenic, teratogenesis, mutagenicity also have interference effect to internal secretion, and this influence even can continue several generations constitutes a serious threat to human survival procreation and Sustainable development.
Can only take to utilize the method for ultraviolet light photocatalysis degradation and reaction efficiency low to the processing of this pollutant and control before this, be difficult to mass-producing and use.Therefore, how further improve catalytic efficiency to this type of material become application potential is arranged in the world most, one of field that research is the most active.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method who is adsorbed with the bacterial cellulose suspension of organic pollutants, to remedy the deficiencies in the prior art or defective, meets the demands of production and living.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: 1, a kind of preparation method who is adsorbed with the bacterial cellulose suspension of organic pollutants comprises the steps:
(1) bacterial cellulose wet-coating places 50～100 ℃, and concentration is in 1～10% the alkaline solution, and heating 20～60min removes tropina, then with the acid solution flushing of deionized water and 0.1～1%;
(2) bacteria cellulose after the purification places in the hollander, and rotating speed is adjusted into 300～500r/min, and time 5～15min forms emulsion;
(3) above-mentioned emulsion is placed in the whizzer, rotating speed is 100～700r/min, separates upper strata suspension and obtains bacterial cellulose suspension.
As optimized technical scheme: the bacterial classification of described product bacteria cellulose comprises acetobacter xylinum (Acetobacter xylinum), produce acetobacter (A.acetigenum), acetify bacillus (Acetobacteraceti), Acetobacter pasteurianus (Acetobacterpasteurianus), glucose bacillus (Gluconobaterspp), Agrobacterium (Agrobaterium tumefaciens), root nodule bacterium (Rhizobium trifolii), sarcina (Sarcina ventriculi), pseudomonas cepacia (Seudomonas cepacia), Pseudomonas cocovenenans (P.cocovenenans), in the campylobacter jejuni (Campylobater jejuni) one or more;
Described alkaline solution is NaOH solution, KOH solution, ammonia soln or NaHCO
3In the solution one or more.
Described acid solution comprises H
2SO
4Solution, HCl solution, CH
3In COOH solution or the acetate one or more.
Described alkaline solution and acid solution are reused.
Get a certain amount of organic waste water, behind the adjusting pH value, add the above-mentioned bacterial cellulose suspension of 20-50%, stir 2-5min, standing demix can make pollutent and water sepn after about 10 minutes.
Before water quality detection: CODcr handles is 2.8g/L, handles the back and is 1.5g/L (emission standard is 2g/L); It is 6-7 that pH value is handled the back; Meet national standard fully.
Principle of the present invention is: bacterial cellulose wet-coating has very high surface active energy after removing surface impurity, carry out pulping again after, increased its surface-area greatly, thereby helped organic pollutant adsorption.
The invention has the beneficial effects as follows:
(1) owing to use solution non-volatility, nontoxicity, thereby can not work the mischief to environment and operator.
(2) preparation method of suspension is simple, and rate of adsorption is fast, and adsorption effect is obvious.
(3) it is promptly recyclable that Xi Fu organic pollutant only needs simple method, non-secondary pollution.
(4) solution after the operation is reusable again through simple adjusting with the PH meter, has shortened extracting cycle.
Embodiment
Below in conjunction with specific embodiment the present invention is further elaborated.
Embodiment 1
The cellulose wet-coating that acetobacter xylinum is produced places 60 ℃, and concentration is that heating 30min removes tropina, uses the H of deionized water and 0.4% then in 5% the NaOH solution
2SO
4Solution washes repeatedly; Bacteria cellulose after the purification places in the hollander, and rotating speed is adjusted into 500r/min, and the time forms emulsion at 10min; Above-mentioned emulsion is placed in the whizzer, and rotating speed is 400r/min, obtains upper strata suspension.The suspension that obtains is placed a certain amount of waste water, stir 5min, standing demix obtains the upper strata stillness of night.
Embodiment 2
The cellulose wet-coating that the glucose bacillus is produced places 50 ℃, and concentration is that heating 20min removes tropina in 1% the ammonia soln, then with the HCl solution flushing of deionized water and 1%; Bacteria cellulose after the purification places in the hollander, and rotating speed is adjusted into 300r/min, and time 15min forms emulsion; Above-mentioned emulsion is placed in the whizzer, and rotating speed is 700r/min, separates upper strata suspension and obtains bacterial cellulose suspension.Get a certain amount of organic waste water, behind the adjusting pH value, add 20% above-mentioned bacterial cellulose suspension, stir 5min, standing demix can make pollutent and water sepn after about 10 minutes.
Embodiment 3
The root nodule bacterium cellulose wet-coating is placed 100 ℃, and concentration is 10% NaHCO
3In the solution, heating 60min removes tropina, uses the CH of deionized water and 0.1% then
3The flushing of COOH solution; Bacteria cellulose after the purification places in the hollander, and rotating speed is adjusted into 500r/min, and time 5min forms emulsion; Above-mentioned emulsion is placed in the whizzer, and rotating speed is 100r/min, separates upper strata suspension and obtains bacterial cellulose suspension.Get a certain amount of organic waste water, behind the adjusting pH value, add 50% above-mentioned bacterial cellulose suspension, stir 2min, standing demix can make pollutent and water sepn after about 10 minutes.
Claims (5)
1, a kind of preparation method who is adsorbed with the bacterial cellulose suspension of organic pollutants is characterized in that, comprises the steps:
(1) bacterial cellulose wet-coating places 50～100 ℃, and concentration is in 1～10% the alkaline solution, and heating 20～60min removes tropina, then with the acid solution flushing of deionized water and 0.1～1%;
(2) bacteria cellulose after the purification places in the hollander, and rotating speed is adjusted into 300～500r/min, and time 5～15min forms emulsion;
(3) above-mentioned emulsion is placed in the whizzer, rotating speed is 100～700r/min, separates upper strata suspension and obtains bacterial cellulose suspension.
2, preparation method according to claim 1 is characterized in that: the bacterial classification of described product bacteria cellulose is one or more in acetobacter xylinum, product acetobacter, acetify bacillus, Acetobacter pasteurianus, glucose bacillus, Agrobacterium, root nodule bacterium, sarcina, pseudomonas cepacia, Pseudomonas cocovenenans or the campylobacter jejuni.
3, preparation method according to claim 1 is characterized in that: described alkaline solution is NaOH solution, KOH solution, ammonia soln or NaHCO
3In the solution one or more.
4, preparation method according to claim 1 is characterized in that: described acid solution comprises H
2SO
4Solution, HCl solution, CH
3In COOH solution or the acetate one or more.
5, preparation method according to claim 1 is characterized in that: described alkaline solution and acid solution are reused.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610119083 CN1986432A (en) | 2006-12-05 | 2006-12-05 | Preparing process of bacterial cellulose suspension for adsorbing organic pollutant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610119083 CN1986432A (en) | 2006-12-05 | 2006-12-05 | Preparing process of bacterial cellulose suspension for adsorbing organic pollutant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1986432A true CN1986432A (en) | 2007-06-27 |
Family
ID=38183393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610119083 Pending CN1986432A (en) | 2006-12-05 | 2006-12-05 | Preparing process of bacterial cellulose suspension for adsorbing organic pollutant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103509196A (en) * | 2012-06-19 | 2014-01-15 | 株式会社吴羽 | Preparation method of cellulose-type water solvent |
| CN108727639A (en) * | 2018-06-12 | 2018-11-02 | 哈尔滨工业大学 | A kind of preparation method and application of bacteria cellulose/aramid nano-fiber composite aerogel |
-
2006
- 2006-12-05 CN CN 200610119083 patent/CN1986432A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103509196A (en) * | 2012-06-19 | 2014-01-15 | 株式会社吴羽 | Preparation method of cellulose-type water solvent |
| CN103509196B (en) * | 2012-06-19 | 2016-02-17 | 株式会社吴羽 | The manufacture method of the cellulose family aqueous solution |
| CN108727639A (en) * | 2018-06-12 | 2018-11-02 | 哈尔滨工业大学 | A kind of preparation method and application of bacteria cellulose/aramid nano-fiber composite aerogel |
| CN108727639B (en) * | 2018-06-12 | 2020-12-11 | 哈尔滨工业大学 | Preparation method and application of bacterial cellulose/aramid nanofiber composite aerogel |
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