CN109440479A - A kind of method that bioleaching removes heavy metal antimony in polyester fiber fabric - Google Patents
A kind of method that bioleaching removes heavy metal antimony in polyester fiber fabric Download PDFInfo
- Publication number
- CN109440479A CN109440479A CN201811471880.5A CN201811471880A CN109440479A CN 109440479 A CN109440479 A CN 109440479A CN 201811471880 A CN201811471880 A CN 201811471880A CN 109440479 A CN109440479 A CN 109440479A
- Authority
- CN
- China
- Prior art keywords
- polyester fiber
- fiber fabric
- bacillus
- heavy metal
- bioleaching
- 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.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
- D06M16/003—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic with enzymes or microorganisms
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The present invention relates to textile technology fields, more particularly to the method for heavy metal antimony in a kind of bioleaching removal polyester fiber fabric, the following steps are included: 1) bacillus inoculation liquid that volume fraction is 3%-5% is added into culture medium, add microbiological culture media nutrient source FeSO4-7H2O, its dosage is 4-6g/L, prepares bacillus soak；2) polyester fiber fabric is sufficiently infiltrated in bacillus soak and carries out leaching, then carry out shaken cultivation, the ratio of polyester fiber fabric quality and bacillus soak volume is 1:20, is impregnated 4-6 days.Compared with prior art, the present invention is with following the utility model has the advantages that at low cost, without secondary pollution, remarkable in economical benefits: the present invention is not required to add other chemical reagent using the heavy metal antimony in bacillus removal textile in addition to culture medium.
Description
Technical field
The present invention relates to textile technology fields, and in particular to heavy metal antimony in a kind of bioleaching removal polyester fiber fabric
Method.
Background technique
Polyester fiber is widely applied to the fields such as textile garment, home decoration, but must use in process of polyester synthesizing
Effective catalyst reduces the progress of side reaction, improves the conversion ratio of main reaction.Currently, mainly including using wider catalyst
Antimony (Sb) class catalyst, and various auxiliary agent dyestuffs can be added during polyester fiber post-processing, wherein also containing a huge sum of money
Belong to antimony.Heavy metal antimony has very big harm to human body and environment, so needing the weight in suitable method removal polyester fibre fabric
Metal.
There are many traditional method for removing removing heavy metals, but which are mainly applied to the heavy metal in removal water body and soil, right
The rare research in the method document of heavy metal in removal polyester, and traditional method has certain defect, such as electrochemistry
Method, it is that heavy metal ion is made the physical-chemical reactions such as electromigration to occur by heavy metals removal by DC Electric Field,
The occasion more suitable for content of beary metal, content of beary metal is few in polyester fiber, and electrochemical method is not applicable；Although absorption method
Heavy metal can be adsorbed, but adsorbent is added to have a certain impact for the polymerization of polyester and find the adsorbent properly removed
It is more difficult.
Bioleaching removes removing heavy metals using microorganism, simply, pollution-free, is a kind of emerging biotechnology, has
Very powerful development potentiality.
Bioleaching refers to be made using the oxidation of specified microorganisms or its metabolite, reduction, complexing, absorption or dissolution
With by a kind of technology of insoluble compositions certain in solid phase (such as heavy metal, sulphur and other metals) separation extraction.It mainly answers at present
For the removal of Heavy Metals in Sludge, sludge organism leaching refers to the catalysis of the acidophilic thiobacillus using special chemosynthetic autotroph
Oxidation reduces the pH value of sludge system, so that the heavy metal of indissoluble form is extracted into liquid phase by solid phase, then passes through again
Sludge dewatering, to achieve the purpose that remove Heavy Metals in Sludge.
Bioleaching goes the mechanism of removing heavy metals:
(1) microorganism is to the transformation of heavy metal ion, and the long-term existence of heavy metal ion makes in nature in environment
Some peculiar microorganisms are formd, they are resistant to toxic heavy metal ion, metal ion can be made to convert.Hg,
The metals such as Pb, Sn, Se, As and Sb or metalloid ion can be reduced under microbial action by redox or
Lose toxicity, for example, Sb3+ toxicity ratio Sb5+ small toxicity, Sb3+ is oxidized to Sb5+ under microbiological oxidation, makes poison
Property reduce.
(2) absorption and cumulative function of the microorganism to heavy metal, microorganism adsorption are mainly biological cell wall surface
Some groups with metal complex, coordination ability work, such as sulfydryl, carboxyl, hydroxyl, these groups by with heavy metal
Ion forms ionic bond or covalent bond to adsorb heavy metal ion.Bacteria buildup mainly utilizes biological metabolism
Heavy metal ion is transported to cell interior by unit price or bivalent ions transfer system by the energy of generation.
Show to use sulfate if any document about the document and patent of removal waste water and Heavy Metals in Sludge at present
Reducing bacteria removes the heavy metal in waste water, and (Wu Qiong, Zhang Guoping pay will equality, sulfate reducing bacteria to 10 days removal rates up to 95.2%
Research [J] the earth and environment of removal flowing Antimony in Waste Water, 2016,44 (6): 691-698)；Sewage is removed with bacillus
In heavy metal antimony, can reach 99% to the removal rate of total antimony, (Li little Jiao: microbiological treatment antimony ore waste water technology studies the lake [D]
Southern agriculture university, 2011).Chinese patent 201610343495.7 disclose it is a kind of removal heavy metals in industrial wastewater ion it is micro-
Bacteria agent and application method, with the weight in Paenibacillus polymyxa and the common fermentation object of Bu Shi pseudomonad removal industrial wastewater
Metal, to Cu2+、Pb2+And Cd2+Removal rate is up to 98%.
Compared to traditional method for removing removing heavy metals, bioleaching is a huge sum of money in the appropriate removal polyester fabric of one kind
The method of category, but few documents or patent introduction or mention, with the middle heavy metal in microorganism removal polyester fiber fabric
Antimony.Therefore, a kind of method that the bioleaching suitable for polyester fiber removes removing heavy metals antimony is developed to be of great significance.
Summary of the invention
The purpose of the present invention is to provide the methods of heavy metal antimony in a kind of bioleaching removal polyester fiber fabric, with solution
Certainly the problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme:
A kind of method that bioleaching removes heavy metal antimony in polyester fiber fabric, comprising the following steps:
1) bacillus inoculation liquid that volume fraction is 3%-5% is added into culture medium, adds microbiological culture media
Nutrient source FeSO4-7H2O, dosage 4-6g/L prepare bacillus soak；
2) polyester fiber fabric is sufficiently infiltrated in bacillus soak and carries out leaching, then carry out shaken cultivation, gathered
The ratio of ester fiber fabric quality and bacillus soak volume is 1:20, is impregnated 4-6 days；
3) polyester fiber fabric after immersion is taken out, it is clean with distilled water flushing, clean fabric is dried, is gone
The polyester fiber fabric of removing heavy metals antimony.
Be as further scheme of the invention: when the step 2) leaching, controlled at 32 ± 2 DEG C, pH is 4 ± 2,
Frequency of oscillation is 121r/min.
It is as further scheme of the invention: 9 points of every morning during the step 2) immersion, is all made of weighing
Method supplements the moisture evaporated.
It is as further scheme of the invention: the bacillus inoculation liquid being added in the step 1) into culture medium
Volume fraction is 5%.
Be as further scheme of the invention: polyester fiber fabric is in bacillus soak in the step 2)
It impregnates 5 days.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, at low cost, without secondary pollution, remarkable in economical benefits: the present invention utilizes the weight in bacillus removal textile
Metallic antimony is not required to add other chemical reagent in addition to culture medium；
2, easy to operate, efficient: the time that the present invention removes textile heavy metal antimony is 4-6 days, is existed to the removal rate of antimony
86%~93%, treated, and textile meets national standard；
3, it the present invention provides the method for heavy metal antimony in a kind of bioleaching removal polyester fiber fabric, can effectively go
Except the heavy metal antimony in polyester fiber fabric, there is good economic and social benefit.
Specific embodiment
Combined with specific embodiments below, technical scheme in the embodiment of the invention is clearly and completely described, shows
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
Embodiment 1:
The method of heavy metal antimony in a kind of bioleaching removal polyester fiber fabric of the present embodiment, comprising the following steps:
1) bacillus inoculation liquid that volume fraction is 3% is added into culture medium, adds microbiological culture media nutrition
Source FeSO4-7H2O, dosage 4g/L prepare bacillus soak；
2) polyester fiber fabric is sufficiently infiltrated in bacillus soak and carries out leaching, then carry out shaken cultivation, gathered
The ratio of ester fiber fabric quality and bacillus soak volume is 1:20, is impregnated 4 days；
3) polyester fiber fabric after immersion is taken out, it is clean with distilled water flushing, clean fabric is dried, is gone
The polyester fiber fabric of removing heavy metals antimony.
When the step 2) leaching, controlled at 32 ± 2 DEG C, pH is 4 ± 2, frequency of oscillation 121r/min.
It 9 points of every morning during the step 2) immersion, is all made of weight method and supplements the moisture evaporated.
After tested, it is more than for 56ppm without the metal Sb content that the polyester fiber fabric that bioleaching is handled can dissociate
The national standard of ecological textile；It is after treatment 83.5% to the removal rate of Sb, treated, and fabric meets ecological spinning
The standard of product.
Embodiment 2:
The method of heavy metal antimony in a kind of bioleaching removal polyester fiber fabric of the present embodiment, comprising the following steps:
1) bacillus inoculation liquid that volume fraction is 4% is added into culture medium, adds microbiological culture media nutrition
Source FeSO4-7H2O, dosage 4g/L prepare bacillus soak；
2) polyester fiber fabric is sufficiently infiltrated in bacillus soak and carries out leaching, then carry out shaken cultivation, gathered
The ratio of ester fiber fabric quality and bacillus soak volume is 1:20, is impregnated 4 days；
3) polyester fiber fabric after immersion is taken out, it is clean with distilled water flushing, clean fabric is dried, is gone
The polyester fiber fabric of removing heavy metals antimony.
When the step 2) leaching, controlled at 32 ± 2 DEG C, pH is 4 ± 2, frequency of oscillation 121r/min.
It 9 points of every morning during the step 2) immersion, is all made of weight method and supplements the moisture evaporated.
After tested, it is more than for 56ppm without the metal Sb content that the polyester fiber fabric that bioleaching is handled can dissociate
The national standard of ecological textile；It is after treatment 87.2% to the removal rate of Sb, treated, and fabric meets ecological spinning
The standard of product.
Embodiment 3:
The method of heavy metal antimony in a kind of bioleaching removal polyester fiber fabric of the present embodiment, comprising the following steps:
1) bacillus inoculation liquid that volume fraction is 5% is added into culture medium, adds microbiological culture media nutrition
Source FeSO4-7H2O, dosage 6g/L prepare bacillus soak；
2) polyester fiber fabric is sufficiently infiltrated in bacillus soak and carries out leaching, then carry out shaken cultivation, gathered
The ratio of ester fiber fabric quality and bacillus soak volume is 1:20, is impregnated 5 days；
3) polyester fiber fabric after immersion is taken out, it is clean with distilled water flushing, clean fabric is dried, is gone
The polyester fiber fabric of removing heavy metals antimony.
When the step 2) leaching, controlled at 32 ± 2 DEG C, pH is 4 ± 2, frequency of oscillation 121r/min.
It 9 points of every morning during the step 2) immersion, is all made of weight method and supplements the moisture evaporated.
After tested, it is more than for 56ppm without the metal Sb content that the polyester fiber fabric that bioleaching is handled can dissociate
The national standard of ecological textile；It is after treatment 92.7% to the removal rate of Sb, treated, and fabric meets ecological spinning
The standard of product.
Embodiment 4:
The method of heavy metal antimony in a kind of bioleaching removal polyester fiber fabric of the present embodiment, comprising the following steps:
1) bacillus inoculation liquid that volume fraction is 5% is added into culture medium, adds microbiological culture media nutrition
Source FeSO4-7H2O, dosage 6g/L prepare bacillus soak；
2) polyester fiber fabric is sufficiently infiltrated in bacillus soak and carries out leaching, then carry out shaken cultivation, gathered
The ratio of ester fiber fabric quality and bacillus soak volume is 1:20, is impregnated 6 days；
3) polyester fiber fabric after immersion is taken out, it is clean with distilled water flushing, clean fabric is dried, is gone
The polyester fiber fabric of removing heavy metals antimony.
When the step 2) leaching, controlled at 32 ± 2 DEG C, pH is 4 ± 2, frequency of oscillation 121r/min.
It 9 points of every morning during the step 2) immersion, is all made of weight method and supplements the moisture evaporated.
After tested, it is more than for 56ppm without the metal Sb content that the polyester fiber fabric that bioleaching is handled can dissociate
The national standard of ecological textile；It is after treatment 93% to the removal rate of Sb, treated, and fabric meets ecological textile
Standard.
The working principle of the invention is: biological adsorption can be divided into extracellular enrichment precipitating, cell surface adsorption precipitation and
Intracellular enrichment, wherein the absorption of cell surface and complexing all have microorganism dead or living, and extracellular and intracellular
It is a large amount of enrichment then often require that microorganism is active, because in entire treatment process microorganism be all it is active, with the time
Passage, antimony adsorbed by extracellularly enrichment precipitating, cell surface adsorption precipitation and intracellular enrichment, a part by thallus
Or be absorbed into inside cell, a part of antimony generates microdeposit under the flocculation of thallus；And because of the metabolism of microorganism
Effect, metabolite and heavy metal compound play oxidation-reduction, and generating acidic materials declines system PH, in acid item
Under part, it is more advantageous to the migration precipitation of heavy metal in polyester fiber fabric, accelerates the removal speed of heavy metal, and polyester fiber is resistance to
Acidity is good and generation acidic materials concentration is low, will not generate harm to fabric.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of method of heavy metal antimony in bioleaching removal polyester fiber fabric, which comprises the following steps:
1) bacillus inoculation liquid that volume fraction is 3%-5% is added into culture medium, adds microbiological culture media nutrient source
FeSO4-7H2O, dosage 4-6g/L prepare bacillus soak；
2) polyester fiber fabric is sufficiently infiltrated in bacillus soak and carries out leaching, then carry out shaken cultivation, polyester is fine
The ratio for tieing up fabric quality and bacillus soak volume is 1:20, is impregnated 4-6 days；
3) polyester fiber fabric after immersion is taken out, it is clean with distilled water flushing, clean fabric is dried, removal weight is obtained
The polyester fiber fabric of metallic antimony.
2. the method for heavy metal antimony in bioleaching removal polyester fiber fabric according to claim 1, which is characterized in that described
When step 2 leaching, controlled at 32 ± 2 DEG C, pH is 4 ± 2, frequency of oscillation 121r/min.
3. the method for heavy metal antimony in bioleaching removal polyester fiber fabric according to claim 1 or 2, which is characterized in that
It 9 points of every morning during the step 2 immersion, is all made of weight method and supplements the moisture evaporated.
4. the method for heavy metal antimony in bioleaching removal polyester fiber fabric according to claim 3, which is characterized in that described
The bacillus inoculation liquid volume fraction being added in step 1) into culture medium is 5%.
5. the method for heavy metal antimony in bioleaching removal polyester fiber fabric according to claim 4, which is characterized in that described
Polyester fiber fabric is impregnated 5 days in bacillus soak in step 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471880.5A CN109440479A (en) | 2018-12-04 | 2018-12-04 | A kind of method that bioleaching removes heavy metal antimony in polyester fiber fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471880.5A CN109440479A (en) | 2018-12-04 | 2018-12-04 | A kind of method that bioleaching removes heavy metal antimony in polyester fiber fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109440479A true CN109440479A (en) | 2019-03-08 |
Family
ID=65556207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811471880.5A Pending CN109440479A (en) | 2018-12-04 | 2018-12-04 | A kind of method that bioleaching removes heavy metal antimony in polyester fiber fabric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109440479A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114105409A (en) * | 2021-11-19 | 2022-03-01 | 苏州中晟环境修复有限公司 | Method for treating antimony in underground water polluted by printing and dyeing wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475259A (en) * | 2008-10-31 | 2009-07-08 | 南开大学 | Method for removing heavy metal in excess activated sludge |
| CN103421702A (en) * | 2012-06-28 | 2013-12-04 | 华中农业大学 | Bacteria Lysinibacillus sp. for adsorbing gold and antimony |
| CN108914524A (en) * | 2018-07-03 | 2018-11-30 | 芶多富 | A kind of heavy metal ultrasonic wave Environment protection cleaning equipment in textile fabric |
| CN108980853A (en) * | 2018-09-12 | 2018-12-11 | 中国环境科学研究院 | Incineration of refuse flyash and percolate cooperative processing method and device |
-
2018
- 2018-12-04 CN CN201811471880.5A patent/CN109440479A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475259A (en) * | 2008-10-31 | 2009-07-08 | 南开大学 | Method for removing heavy metal in excess activated sludge |
| CN103421702A (en) * | 2012-06-28 | 2013-12-04 | 华中农业大学 | Bacteria Lysinibacillus sp. for adsorbing gold and antimony |
| CN108914524A (en) * | 2018-07-03 | 2018-11-30 | 芶多富 | A kind of heavy metal ultrasonic wave Environment protection cleaning equipment in textile fabric |
| CN108980853A (en) * | 2018-09-12 | 2018-12-11 | 中国环境科学研究院 | Incineration of refuse flyash and percolate cooperative processing method and device |
Non-Patent Citations (1)
| Title |
|---|
| 华南农业大学: "《面向21世纪现代农业科技与农业高等教育 华南农业大学90周年校庆学术研讨会论文集》", 31 December 2000 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114105409A (en) * | 2021-11-19 | 2022-03-01 | 苏州中晟环境修复有限公司 | Method for treating antimony in underground water polluted by printing and dyeing wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chen et al. | Removal of Pb2+, Ag+, Cs+ and Sr2+ from aqueous solution by brewery's waste biomass | |
| Liu et al. | Improvement of sludge dewaterability and removal of sludge-borne metals by bioleaching at optimum pH | |
| Salehizadeh et al. | Removal of metal ions from aqueous solution by polysaccharide produced from Bacillus firmus | |
| Shumate et al. | Biological removal of metal ions from aqueous process streams | |
| De Philippis et al. | Exopolysaccharide-producing cyanobacteria in heavy metal removal from water: molecular basis and practical applicability of the biosorption process | |
| Bingol et al. | Removal of chromate anions from aqueous stream by a cationic surfactant-modified yeast | |
| Maini et al. | An integrated method incorporating sulfur-oxidizing bacteria and electrokinetics to enhance removal of copper from contaminated soil | |
| Tuovinen et al. | Use of micro-organisms for the recovery of metals | |
| Zeng et al. | Removal of trace metals and improvement of dredged sediment dewaterability by bioleaching combined with Fenton-like reaction | |
| Sun et al. | Efficient removal of heavy metals by synergistic actions of microorganisms and waste molasses | |
| CN208471815U (en) | A kind of high-concentration sewage treatment system of AO technique and Fenton system support | |
| CN109967519B (en) | Microbial remediation method for heavy metal pollution of tailing pond | |
| CN109290366A (en) | A kind of method of bioleaching-Biostatic Combined Treatment heavy-metal contaminated soil | |
| Chen et al. | Bioleaching of heavy metals from livestock sludge by indigenous sulfur-oxidizing bacteria: effects of sludge solids concentration | |
| CN113072192B (en) | System and method for removing perfluorinated compounds in water by reinforced constructed wetland | |
| Aksu et al. | A comparative study of the adsorption of chromium (VI) ions to C. vulgaris and Z. ramigera | |
| Sen et al. | Biotechnology–applications to environmental remediation in resource exploitation | |
| CN211688726U (en) | Electroplating wastewater treatment device for treating metal-chelating agent complex | |
| Bosio et al. | Integrated bacterial process for the treatment of a spent nickel catalyst | |
| Huiping et al. | Biosorption equilibrium and kinetics of Au (III) and Cu (II) on magnetotactic bacteria | |
| Singh et al. | Synergism of Pseudomonas aeruginosa and Fe0 for treatment of heavy metal contaminated effluents using small scale laboratory reactor | |
| CN101050047B (en) | Method for removing heavy metal in excess activated sludge | |
| CN107214185A (en) | A kind of method of the repairing hexavalent chromium polluted soil of Biology-iron | |
| CN109440479A (en) | A kind of method that bioleaching removes heavy metal antimony in polyester fiber fabric | |
| Özer et al. | Cadmium (II) adsorption on Cladophora crispata in batch stirred reactors in series |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190308 |