CN102941071A - Preparation method of biodegradable oil absorption microsphere with nitrogen nutrient element slow release function - Google Patents
Preparation method of biodegradable oil absorption microsphere with nitrogen nutrient element slow release function Download PDFInfo
- Publication number
- CN102941071A CN102941071A CN2012105049636A CN201210504963A CN102941071A CN 102941071 A CN102941071 A CN 102941071A CN 2012105049636 A CN2012105049636 A CN 2012105049636A CN 201210504963 A CN201210504963 A CN 201210504963A CN 102941071 A CN102941071 A CN 102941071A
- Authority
- CN
- China
- Prior art keywords
- solution
- under
- ratio
- condition
- urea
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a preparation method of a biodegradable oil absorption microsphere with a nitrogen nutrient element slow release function. The preparation method comprises the following steps of: preparing a urea solution and a formalin solution according to the ratio of 6.5:1, and regulating the pH value of the urea solution to be 7.2-7.4; adding formalin into the urea solution, stirring for 90-100 minutes, regulating the pH value to be 3.2-3.4, and adding deionized water so as to obtain a mixed liquid M; mixing chloroform solutions of beta polyhydroxybutyrate and polyethylene glycol both with the mass percentage of 7.5% according to the ratio of 5:1; dropping M1 into the chloroform mixed solution according to the ratio of 1:4; dropping the obtained mixed solution into a polyving akohol solution with the mass percentage of 3.5% according to the ratio of 1:1; and dropping the polyving akohol solution with the mass percentage of 0.5% into the mixed liquid according to the ratio of 2:1, stirring for 7-8 hours, separating, freezing and drying so as to obtain the microsphere. According to the invention, the preparation technology is simple; the obtained microsphere has high treatment efficiency to petroleum hydrocarbon pollutants and does not generate secondary pollution and damage to a water body.
Description
Technical field
The invention belongs to the processing technology field that is subjected to the oil spill water body, particularly a kind of biodegradable oil suction method for preparing microsphere with nitrogen nutrition element slow-release function.
Background technology
In recent years, the demand that oil and goods thereof is day by day increased along with countries in the world, at sea exploit, load and unload, transport and utilize that oil spill accident happens occasionally in the oil process, not only cause a large amount of crude oil to run off, also environment is caused severe contamination, threatening the ecological environment of water body and land-based area with being on the rise, water body environment, natural resources and culture resources etc. are had long-term harm, therefore, the water body oil spill has become the great environmental problem that people must face.
The method of disposing at present the water body oil spill both at home and abroad mainly contains Physical, chemical method and bioanalysis.Chemical method is the technology path of comparative maturity in point-source pollution is administered, and has obtained widely propagation and employment.But adopt chemical method in the water body oil spill is administered, need to add chemical agent in water body, the chemical agent that wherein adds may produce secondary pollution on the one hand, can produce short-term or long-term impact to water ecological setting on the other hand.The characteristics such as bioremediation technology has efficiently, economy, safety, non-secondary pollution, become the on-the-spot important selection approach of removing the water body oil spill, the oil sheet that particularly can't remove mechanical device, when chemical agent is used in restriction again simultaneously, use biological prosthetic its larger superiority of showing.Physisorphtion is that a kind for the treatment of effeciency is high, cost is low, without sediment pollution, simple to operate and can not cause to water ecological setting the method for secondary pollution and destruction, can solve preferably the existing problem of chemical method.But, the cycle of bioremediation technology is long, physisorphtion faces absorption needs problem that adsorbent is remarketed after saturated, if can prepare a kind of biodegradable adsorbent, after absorption is saturated, pass through the effect of microorganism in the polluted-water with adsorbent petroleum hydrocarbon degradation, and final biodegradable adsorbent itself also can thoroughly be degraded, and this will have larger advantage for disposing the water body oil spill.But in the process of microbial degradation petroleum hydrocarbon and adsorbent itself, need the participation of nitrogen nutrition element, the needs that generally contained nitrogen element can't satisfy microorganism in the oil spill water body are asked, therefore a kind of adsorbent with nitrogen nutrition element slow-release function be need to develop, but the technology and research report of this aspect also lacked at present.
Summary of the invention
Purpose of the present invention provides a kind of biodegradable oil suction method for preparing microsphere with nitrogen nutrition element slow-release function.Its concrete steps are as follows:
(1) the preparation mass fraction is 50% aqueous solution of urea, and the preparation mass fraction is 30% formalin; Be 6.5: 1 ratio in the volume ratio of aqueous solution of urea and formalin, aqueous solution of urea be moved in the A container that formalin is moved in the B container;
(2) formalin in aqueous solution of urea and the B container in step (1) the A container was placed 45 ℃ of water-bath constant temperature 30～40 minutes;
(3) dripping molar concentration in the aqueous solution of urea of step (2) under the 1000r/min stirring condition is the NaOH solution of 0.01mol/L and the HCl solution that molar concentration is 0.005mol/L, and the pH value that makes solution is 7.2～7.4;
(4) formalin in the step (2) is joined under the 1000r/min stirring condition in the aqueous solution of urea in the step (3), then place 45 ℃ of water-baths under the 1000r/min condition, to stir 90～100 minutes;
(5) be the NaOH solution of 0.01mol/L and the HCl solution that molar concentration is 0.005mol/L with dripping molar concentration in the mixed solution of step (4) under the 1000r/min stirring condition, the pH value that makes solution is 3.2～3.4;
(6) mixed solution with step (5) then places 35 ℃ of water-baths to stir under the 1000r/min condition 90～100 minutes;
(7) be that 25: 1 ratio is added drop-wise to deionized water in the step (6) and obtains mixed liquor M1 in the mixed solution by volume under the 1000r/min stirring condition, then under the 1000r/min condition, stir 4min;
(8) the preparation mass fraction is 7.5% poly beta-hydroxybutyrate chloroformic solution; The preparation mass fraction is 7.5% polyethylene glycol chloroformic solution; Be that 5: 1 ratio fully is mixed to get mixed solution with the two in the volume ratio of poly beta-hydroxybutyrate chloroformic solution and polyethylene glycol chloroformic solution;
(9) be that 1: 4 ratio is added drop-wise to mixed liquor M1 in the step (7) in the step (8) in the mixed solution by volume under the 1000r/min stirring condition, then under the 1000r/min condition, stir 4min;
(10) be by volume 1: 1 ratio the mixed liquor in the step (9) is added drop-wise to mass fraction under the 1000r/min stirring condition be 3.5% poly-vinyl alcohol solution, then under the 1000r/min condition, stir 4min;
(11) be that 2: 1 ratio is that 0.5% poly-vinyl alcohol solution is added drop-wise in the mixed liquor in the step (10) with mass fraction by volume, under the 1000r/min condition, stir 7～8h, solvent is fully volatilized and cause polymerisation, be to carry out centrifugation under the 6000r/min condition at rotating speed, then with deionized water washing 3 times, freeze drying must have the biodegradable oil suction microballoon of nitrogen nutrition element slow-release function.
The invention has the beneficial effects as follows that manufacture craft is simple, the biodegradable oil suction microballoon with nitrogen nutrition element slow-release function that makes is high to the petroleum hydrocarbon contaminant treatment effeciency, and can not cause secondary pollution and destruction to water ecological setting.
The specific embodiment
The invention provides a kind of biodegradable oil suction method for preparing microsphere with nitrogen nutrition element slow-release function, the below illustrates the process of in fact executing with two embodiment.
Embodiment 1.
Be that 50% aqueous solution of urea is moved in the A container with the 65mL mass fraction, the 10mL mass fraction is that 30% formalin is moved in the B container, then is placed on respectively in 45 ℃ of water-baths constant temperature 30 minutes; The dropping molar concentration is that the pH value of the NaOH solution of 0.01mol/L and the HCl solution adjusting aqueous solution of urea that molar concentration is 0.005mol/L is 7.2; Formalin in the B container is joined under the 1000r/min stirring condition in the above-mentioned aqueous solution of urea, then place 45 ℃ of water-baths under the 1000r/min condition, to stir 90 minutes; Dripping molar concentration in the mixed liquor and be the NaOH solution of 0.01mol/L and HCl solution that molar concentration is 0.005mol/L, to regulate the pH value of mixed solution be 3.2; Then place 35 ℃ of water-baths under the 1000r/min condition, to stir 90 minutes; The 1875mL deionized water is added drop-wise under the 1000r/min stirring condition obtains 1950mL mixed liquor M1 in the above-mentioned 75mL mixed solution.
Mass fraction is 7.5% 200mL poly beta-hydroxybutyrate chloroformic solution and 40mL polyethylene glycol chloroformic solution and fully is mixed to get the 240mL mixed solution; 60mL mixed liquor M1 is added drop-wise under stirring condition in the above-mentioned 240mL mixed solution obtains the 300mL mixed solution, then under the 1000r/min condition, stir 4min; It is to obtain the 600mL mixed solution in 3.5% the poly-vinyl alcohol solution that the 300mL mixed liquor that obtains is added drop-wise to the 300mL mass fraction, then stirs 4min under the 1000r/min condition; Be that 0.5% poly-vinyl alcohol solution is added drop-wise in the mixed liquor of above-mentioned 600mL with the 1200mL mass fraction, under the 1000r/min condition, stir 7h, solvent is fully volatilized and cause polymerisation, then be to carry out centrifugation under the 6000r/min condition at rotating speed, with deionized water washing 3 times, freeze drying must have the biodegradable oil suction microballoon of nitrogen nutrition element slow-release function.
The below is that the biodegradable oil suction microballoon with nitrogen nutrition element slow-release function that uses the inventive method to make has carried out absorption and biodegradation test to the petroleum hydrocarbon in the oil spill water body, further specifies the present invention.
The biodegradable oil suction microballoon with nitrogen nutrition element slow-release function that uses the inventive method to make has carried out absorption and biodegradation test to the petroleum hydrocarbon in the oil spill water body, the result shows that this microballoon can effectively adsorb and biodegradation the petroleum hydrocarbon in the water body: when the initial concentration of polluted-water Petroleum Hydrocarbon is 118.9mg/L, in the water body of 1000mL, add the 10g microballoon, the concentration of energy water body Petroleum Hydrocarbon is reduced to 0.01mg/L after 12 hours, microballoon Petroleum Hydrocarbon concentration does not detect after 90 days, and the quality of microballoon reduces by 44% after 185 days.
Embodiment 2.
Be that 50% aqueous solution of urea is moved in the A container with the 65mL mass fraction, the 10mL mass fraction is that 30% formalin is moved in the B container, then is placed on respectively in 45 ℃ of water-baths constant temperature 30 minutes; The dropping molar concentration is that the pH value of the NaOH solution of 0.01mol/L and the HCl solution adjusting aqueous solution of urea that molar concentration is 0.005mol/L is 7.4; Formalin in the B container is joined under the 1000r/min stirring condition in the above-mentioned aqueous solution of urea, then place 45 ℃ of water-baths under the 1000r/min condition, to stir 90 minutes; Dripping molar concentration in the mixed liquor and be the NaOH solution of 0.01mol/L and HCl solution that molar concentration is 0.005mol/L, to regulate the pH value of mixed solution be 3.4; Then place 35 ℃ of water-baths under the 1000r/min condition, to stir 90 minutes; The 1875mL deionized water is added drop-wise under the 1000r/min stirring condition obtains 1950mL mixed liquor M1 in the above-mentioned 75mL mixed solution.
Mass fraction is 7.5% 200mL poly beta-hydroxybutyrate chloroformic solution and 40mL polyethylene glycol chloroformic solution and fully is mixed to get the 240mL mixed solution; 60mL mixed liquor M1 is added drop-wise under stirring condition in the above-mentioned 240mL mixed solution obtains the 300mL mixed solution, then under the 1000r/min condition, stir 4min; It is to obtain the 600mL mixed solution in 3.5% the poly-vinyl alcohol solution that the 300mL mixed liquor that obtains is added drop-wise to the 300mL mass fraction, then stirs 4min under the 1000r/min condition; Be that 0.5% poly-vinyl alcohol solution is added drop-wise in the mixed liquor of above-mentioned 600mL with the 1200mL mass fraction, under the 1000r/min condition, stir 7h, solvent is fully volatilized and cause polymerisation, then be to carry out centrifugation under the 6000r/min condition at rotating speed, with deionized water washing 3 times, freeze drying must have the biodegradable oil suction microballoon of nitrogen nutrition element slow-release function.
The below is that the biodegradable oil suction microballoon with nitrogen nutrition element slow-release function that uses the inventive method to make has carried out absorption and biodegradation test to the petroleum hydrocarbon in the oil spill water body, further specifies the present invention.
The biodegradable oil suction microballoon with nitrogen nutrition element slow-release function that uses the inventive method to make has carried out absorption and biodegradation test to the petroleum hydrocarbon in the oil spill water body, the result shows that this microballoon can effectively adsorb and biodegradation the petroleum hydrocarbon in the water body: when the initial concentration of polluted-water Petroleum Hydrocarbon is 118.9mg/L, in the water body of 1000mL, add the 10g microballoon, the concentration of energy water body Petroleum Hydrocarbon is reduced to 0.01mg/L after 12 hours, microballoon Petroleum Hydrocarbon concentration does not detect after 90 days, and the quality of microballoon reduces by 42% after 185 days.
Claims (1)
1. biodegradable oil suction method for preparing microsphere with nitrogen nutrition element slow-release function is characterized in that the concrete steps of the method are as follows:
(1) the preparation mass fraction is 50% aqueous solution of urea, and the preparation mass fraction is 30% formalin; Be 6.5: 1 ratio in the volume ratio of aqueous solution of urea and formalin, aqueous solution of urea be moved in the A container that formalin is moved in the B container;
(2) formalin in aqueous solution of urea and the B container in step (1) the A container was placed 45 ℃ of water-bath constant temperature 30～40 minutes;
(3) dripping molar concentration in the aqueous solution of urea of step (2) under the 1000r/min stirring condition is the NaOH solution of 0.01mol/L and the HCl solution that molar concentration is 0.005mol/L, and the pH value that makes solution is 7.2～7.4;
(4) formalin in the step (2) is joined under the 1000r/min stirring condition in the aqueous solution of urea in the step (3), then place 45 ℃ of water-baths under the 1000r/min condition, to stir 90～100 minutes;
(5) be the NaOH solution of 0.01mol/L and the HCl solution that molar concentration is 0.005mol/L with dripping molar concentration in the mixed solution of step (4) under the 1000r/min stirring condition, the pH value that makes solution is 3.2～3.4;
(6) mixed solution with step (5) then places 35 ℃ of water-baths to stir under the 1000r/min condition 90～100 minutes;
(7) be that 25: 1 ratio is added drop-wise to deionized water in the step (6) and obtains mixed liquor M1 in the mixed solution by volume under the 1000r/min stirring condition, then under the 1000r/min condition, stir 4min;
(8) the preparation mass fraction is 7.5% poly beta-hydroxybutyrate chloroformic solution; The preparation mass fraction is 7.5% polyethylene glycol chloroformic solution; Be that 5: 1 ratio fully is mixed to get mixed solution with the two in the volume ratio of poly beta-hydroxybutyrate chloroformic solution and polyethylene glycol chloroformic solution;
(9) be that 1: 4 ratio is added drop-wise to mixed liquor M1 in the step (7) in the step (8) in the mixed solution by volume under the 1000r/min stirring condition, then under the 1000r/min condition, stir 4min;
(10) be by volume 1: 1 ratio the mixed liquor in the step (9) is added drop-wise to mass fraction under the 1000r/min stirring condition be 3.5% poly-vinyl alcohol solution, then under the 1000r/min condition, stir 4min;
(11) be that 2: 1 ratio is that 0.5% poly-vinyl alcohol solution is added drop-wise in the mixed liquor in the step (10) with mass fraction by volume, under the 1000r/min condition, stir 7～8h, solvent is fully volatilized and cause polymerisation, be to carry out centrifugation under the 6000r/min condition at rotating speed, then with deionized water washing 3 times, freeze drying must have the biodegradable oil suction microballoon of nitrogen nutrition element slow-release function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210504963.6A CN102941071B (en) | 2012-12-03 | 2012-12-03 | Preparation method of biodegradable oil absorption microsphere with nitrogen nutrient element slow release function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210504963.6A CN102941071B (en) | 2012-12-03 | 2012-12-03 | Preparation method of biodegradable oil absorption microsphere with nitrogen nutrient element slow release function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102941071A true CN102941071A (en) | 2013-02-27 |
| CN102941071B CN102941071B (en) | 2014-04-09 |
Family
ID=47724114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210504963.6A Expired - Fee Related CN102941071B (en) | 2012-12-03 | 2012-12-03 | Preparation method of biodegradable oil absorption microsphere with nitrogen nutrient element slow release function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102941071B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626255A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Adsorption-regeneration fluidized bed for deeply treating wastewater of coal chemical industry |
| CN103623791A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Porous adsorption plate material with multiple complex functions on petrochemical wastewater and preparation method thereof |
| CN103623790A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | High-polymer functional material for adsorbing and treating organic chemical industry wastewater and preparation method thereof |
| CN103623789A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Multifunctional adsorbent for reinforced biodegradation treatment of petrochemical wastewater and preparation method thereof |
| CN103623781A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Adsorption plate with efficient adsorption function on organic chemical industry wastewater and preparation method thereof |
| CN103623793A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Porous adsorption plate with multiple functions for petroleum hydrocarbon polluted water bodies and preparation method thereof |
| CN103623786A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Phosphorus-release adsorption plate for treating coal chemical industry enterprise wastewater and preparation method thereof |
| CN103710331A (en) * | 2013-12-12 | 2014-04-09 | 北京师范大学 | Preparation method of suspended oil-adsorbing microspheres capable of sustained release of phosphorus and biodegradation of petroleum hydrocarbon |
| CN103755037A (en) * | 2013-12-12 | 2014-04-30 | 北京师范大学 | Fixed adsorption tube reactor used for treating high-salinity phosphorus-deficient organic chemical waste water |
| CN115873838A (en) * | 2022-11-22 | 2023-03-31 | 天津科技大学 | Immobilized microorganism particles capable of slowly releasing nutrition and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280830A (en) * | 1980-01-23 | 1981-07-28 | O. M. Scott And Sons Company | Urea-formaldehyde granular fertilizer |
| EP0096676A2 (en) * | 1982-06-09 | 1983-12-21 | Berglund Jan-Olof Vallentin | Method and device in manufacturing foamed urea formaldehyde material to be used as a sorbent |
| CN102060350A (en) * | 2010-11-18 | 2011-05-18 | 中国海洋石油总公司 | Deep treatment process of oily wastewater |
| CN102500340A (en) * | 2011-09-30 | 2012-06-20 | 北京师范大学 | Porous particle with functions of adsorbing and biodegrading petroleum hydrocarbon and preparation method of porous particle |
-
2012
- 2012-12-03 CN CN201210504963.6A patent/CN102941071B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4280830A (en) * | 1980-01-23 | 1981-07-28 | O. M. Scott And Sons Company | Urea-formaldehyde granular fertilizer |
| EP0096676A2 (en) * | 1982-06-09 | 1983-12-21 | Berglund Jan-Olof Vallentin | Method and device in manufacturing foamed urea formaldehyde material to be used as a sorbent |
| CN102060350A (en) * | 2010-11-18 | 2011-05-18 | 中国海洋石油总公司 | Deep treatment process of oily wastewater |
| CN102500340A (en) * | 2011-09-30 | 2012-06-20 | 北京师范大学 | Porous particle with functions of adsorbing and biodegrading petroleum hydrocarbon and preparation method of porous particle |
Non-Patent Citations (1)
| Title |
|---|
| 吴亮等: "两种缓释肥料在海水中的养分释放特性及强化石油烃生物降解", 《环境化学》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626255A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Adsorption-regeneration fluidized bed for deeply treating wastewater of coal chemical industry |
| CN103623791A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Porous adsorption plate material with multiple complex functions on petrochemical wastewater and preparation method thereof |
| CN103623790A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | High-polymer functional material for adsorbing and treating organic chemical industry wastewater and preparation method thereof |
| CN103623789A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Multifunctional adsorbent for reinforced biodegradation treatment of petrochemical wastewater and preparation method thereof |
| CN103623781A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Adsorption plate with efficient adsorption function on organic chemical industry wastewater and preparation method thereof |
| CN103623793A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Porous adsorption plate with multiple functions for petroleum hydrocarbon polluted water bodies and preparation method thereof |
| CN103623786A (en) * | 2013-12-12 | 2014-03-12 | 北京师范大学 | Phosphorus-release adsorption plate for treating coal chemical industry enterprise wastewater and preparation method thereof |
| CN103710331A (en) * | 2013-12-12 | 2014-04-09 | 北京师范大学 | Preparation method of suspended oil-adsorbing microspheres capable of sustained release of phosphorus and biodegradation of petroleum hydrocarbon |
| CN103755037A (en) * | 2013-12-12 | 2014-04-30 | 北京师范大学 | Fixed adsorption tube reactor used for treating high-salinity phosphorus-deficient organic chemical waste water |
| CN103755037B (en) * | 2013-12-12 | 2015-05-13 | 北京师范大学 | Fixed adsorption tube reactor used for treating high-salinity phosphorus-deficient organic chemical waste water |
| CN103623790B (en) * | 2013-12-12 | 2015-09-09 | 北京师范大学 | For polymer-function material and the preparation method of adsorption treatment organic chemical waste water |
| CN103623793B (en) * | 2013-12-12 | 2015-09-09 | 北京师范大学 | Petroleum hydrocarbon contaminated water body is had to porous adsorption plate and the preparation method of several functions |
| CN103710331B (en) * | 2013-12-12 | 2016-04-06 | 北京师范大学 | Can the suspension oil suction method for preparing microsphere of slowly-releasing phosphorus and biodegradation of petroleum hydrocarbon |
| CN115873838A (en) * | 2022-11-22 | 2023-03-31 | 天津科技大学 | Immobilized microorganism particles capable of slowly releasing nutrition and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102941071B (en) | 2014-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102941071B (en) | Preparation method of biodegradable oil absorption microsphere with nitrogen nutrient element slow release function | |
| CN102963959B (en) | Preparation method of microsphere particles capable of slowly releasing nitrogen and adsorbing-biologically degrading petroleum hydrocarbon | |
| CN102976499B (en) | Method for preparing composite board capable of simultaneously slowly releasing nitrogen and adsorbing/biologically degrading petroleum hydrocarbons | |
| CN103623793B (en) | Petroleum hydrocarbon contaminated water body is had to porous adsorption plate and the preparation method of several functions | |
| CN102500340B (en) | Porous particle with functions of adsorbing and biodegrading petroleum hydrocarbon and preparation method of porous particle | |
| CN103611514B (en) | Multi-functional adsorption particle and the preparation method of the unbalance industrial organic waste water of nitrogen phosphorus can be processed | |
| CN102408160B (en) | Biodegradable perforated plate for adsorption and biodegradation of petroleum hydrocarbon pollutants as well as preparation method thereof | |
| Yang et al. | Biosorption of zinc (II) from aqueous solution by dried activated sludge | |
| CN106693898B (en) | Doping-degree-controllable porous reduced graphene oxide oil absorption material and preparation method thereof | |
| CN103785345A (en) | Supported manganese dioxide adsorbent and method for treating aniline waste water through same | |
| CN103623790B (en) | For polymer-function material and the preparation method of adsorption treatment organic chemical waste water | |
| CN102491494A (en) | Simulator for adsorption and strengthened microbiological degradation of marine spilled oil pollution | |
| CN103613208B (en) | Adsorption plate with high-efficient adsorption and enhanced biodegradation of petroleum hydrocarbon pollutants and preparation method thereof | |
| CN103011380B (en) | Preparation method of biodegradable oil absorption plate capable of slowly releasing nitrogen element | |
| CN103611508B (en) | Some Organic Pollutants is had to Copolymer adsorption ball and the preparation technology of enhanced biodegradation function | |
| Jonglertjunya et al. | Equilibrium and kinetic studies on the adsorption of humic acid by activated sludge and Bacillus subtilis. | |
| CN103691413B (en) | Petroleum hydrocarbon contaminant is had to sorbing material and the preparation technology of several functions | |
| CN102328967A (en) | Biodegradable floating bed with function of adsorbing sea water polluted by oil spillage | |
| CN103611506B (en) | May float on biodegradable multifunctional ceiling elaioleucite and the preparation method of the water surface | |
| CN103623785B (en) | Can the suspension oil absorption plate of slowly-releasing phosphorus and biodegradation of petroleum hydrocarbon and preparation method | |
| CN103613163B (en) | Floating plate capable of realizing sustained release of nutrient elements and adsorbing petroleum hydrocarbons and preparation method thereof | |
| CN103663731B (en) | Porous adsorbent for adsorbing and biologically degrading petrochemical wastewater and preparation method | |
| CN106834268A (en) | It is a kind of based on the diatomaceous functional material for fixing polycyclic aromatic hydrocarbon-degrading bacteria | |
| CN103710331B (en) | Can the suspension oil suction method for preparing microsphere of slowly-releasing phosphorus and biodegradation of petroleum hydrocarbon | |
| Li-Hong et al. | Univariate degradation of indigo carmine in aqueous solution by inactivated biomass in Heterobasidion insulare: preliminary studies |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20141203 |
|
| EXPY | Termination of patent right or utility model |