JP2011104551A5 - - Google Patents
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- Publication number
- JP2011104551A5 JP2011104551A5 JP2009264383A JP2009264383A JP2011104551A5 JP 2011104551 A5 JP2011104551 A5 JP 2011104551A5 JP 2009264383 A JP2009264383 A JP 2009264383A JP 2009264383 A JP2009264383 A JP 2009264383A JP 2011104551 A5 JP2011104551 A5 JP 2011104551A5
- Authority
- JP
- Japan
- Prior art keywords
- electron donor
- polylactic acid
- molecular weight
- based resin
- supply agent
- 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
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- 239000003795 chemical substances by application Substances 0.000 claims 10
- 229920000747 poly(lactic acid) polymer Polymers 0.000 claims 9
- 239000004626 polylactic acid Substances 0.000 claims 9
- 239000011347 resin Substances 0.000 claims 9
- 229920005989 resin Polymers 0.000 claims 9
- 238000002844 melting Methods 0.000 claims 5
- 244000005700 microbiome Species 0.000 claims 5
- 238000000746 purification Methods 0.000 claims 5
- 239000000126 substance Substances 0.000 claims 5
- 150000002830 nitrogen compounds Chemical group 0.000 claims 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims 3
- 238000000137 annealing Methods 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 claims 3
- 239000007864 aqueous solution Substances 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 2
- 238000000034 method Methods 0.000 claims 2
- 239000002994 raw material Substances 0.000 claims 2
- 239000002689 soil Substances 0.000 claims 2
- 230000031018 biological processes and functions Effects 0.000 claims 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims 1
- 239000004310 lactic acid Substances 0.000 claims 1
- 235000014655 lactic acid Nutrition 0.000 claims 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
Description
Claims (10)
重量平均分子量が略１２０００以下、結晶化度が１０％以上で且つ４０％以下であって使用環境の温度下で固体状態にあるポリ乳酸系樹脂を含むことを特徴とする電子供与体供給剤。 In an electron donor supply agent which is used for biological treatment by a microorganism and supplies an electron donor to the microorganism,
What is claimed is: 1. An electron donor supplier comprising a polylactic acid-based resin having a weight average molecular weight of about 12000 or less and a crystallinity of 10% or more and 40% or less and in a solid state at the temperature of use environment.
原料のポリ乳酸系樹脂の分子量を低下させる低分子量化工程と、
その低分子量化工程にて低分子量化されたポリ乳酸系樹脂を、その融点以上の温度で融解する融解工程と、
その融解工程により融解されたポリ乳酸系樹脂を、融点未満の温度でアニールするアニール工程とを有し、
そのアニール工程により結晶化させて固体状態としたポリ乳酸系樹脂を用いて電子供与体供給剤を製造することを特徴とする電子供与体供給剤の製造方法。 In a method of producing an electron donor supply agent which is used for biological treatment by a microorganism and supplies an electron donor to the microorganism,
A molecular weight reduction process for reducing the molecular weight of the raw material polylactic acid resin,
A melting step of melting the polylactic acid based resin reduced in molecular weight in the step of reducing molecular weight at a temperature above its melting point;
Annealing the polylactic acid-based resin melted by the melting step at a temperature below the melting point;
What is claimed is: 1. A method for producing an electron donor supply agent, comprising producing an electron donor supply agent using a polylactic acid-based resin that has been crystallized and solidified in the annealing step.
請求項１若しくは２に記載の電子供与体供給剤又は請求項３から５のいずれかに記載の製造方法によって製造された電子供与体供給剤を用いて生物学的処理を行うことを特徴とする環境浄化方法。 In an environmental purification method for harmonizing a specific component in a substance to be treated by biological treatment,
Characterized by performing a biological process using an electron donor supplying agent produced by the production method according to any one of 5 the electron donor supply agent or claim 3 according to claim 1 young properly 2 How to clean up the environment.
前記特定成分は、窒素化合物であり、
前記電子供与体供給剤を用いて液中の窒素化合物を除去する脱窒処理を行うことを特徴とする請求項６に記載の環境浄化方法。 The substance to be treated is a water-based liquid,
The specific component is a nitrogen compound,
7. The environmental purification method according to claim 6, wherein denitrification treatment for removing nitrogen compounds in the liquid is performed using the electron donor supply agent.
前記特定成分は、窒素化合物であり、
前記電子供与体供給剤を用いて土壌中の窒素化合物を除去する脱窒処理を行うことを特徴とする請求項６に記載の環境浄化方法。 The substance to be treated is soil,
The specific component is a nitrogen compound,
7. The environmental purification method according to claim 6, wherein denitrification treatment for removing nitrogen compounds in the soil is performed using the electron donor supply agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009264383A JP5392719B2 (en) | 2009-11-19 | 2009-11-19 | Electron donor supplier, method for producing electron donor supplier, and environmental purification method using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009264383A JP5392719B2 (en) | 2009-11-19 | 2009-11-19 | Electron donor supplier, method for producing electron donor supplier, and environmental purification method using the same |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2011104551A JP2011104551A (en) | 2011-06-02 |
| JP2011104551A5 true JP2011104551A5 (en) | 2012-12-20 |
| JP5392719B2 JP5392719B2 (en) | 2014-01-22 |
Family
ID=44228675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009264383A Expired - Fee Related JP5392719B2 (en) | 2009-11-19 | 2009-11-19 | Electron donor supplier, method for producing electron donor supplier, and environmental purification method using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5392719B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5909836B2 (en) * | 2012-02-03 | 2016-04-27 | 東洋製罐株式会社 | Electron donor supply agent and environmental purification method using the same |
| JP6232601B2 (en) * | 2013-08-22 | 2017-11-22 | 国立大学法人豊橋技術科学大学 | Polylactic acid resin for use in anaerobic digestion process and method for producing the same |
| JP6713661B2 (en) * | 2016-02-03 | 2020-06-24 | 国立大学法人豊橋技術科学大学 | Polylactic acid porous pellet and method for producing the same |
| WO2018155436A1 (en) * | 2017-02-24 | 2018-08-30 | 株式会社カネカ | Denitrification method and denitrification apparatus |
| JP6844591B2 (en) | 2018-07-10 | 2021-03-17 | 東洋製罐グループホールディングス株式会社 | Polylactic acid copolymer and its production method |
| CN113646384A (en) | 2019-03-29 | 2021-11-12 | 东洋制罐集团控股株式会社 | Polylactic acid solid composition and production method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4331378B2 (en) * | 2000-04-20 | 2009-09-16 | 大成建設株式会社 | Soil purification method |
| JP2004175848A (en) * | 2002-11-25 | 2004-06-24 | Taiho Ind Co Ltd | Biodegradable resin molding having denitrifying action |
| JP2006218456A (en) * | 2005-02-14 | 2006-08-24 | Kokusai Kogyo Co Ltd | Soil purifying method utilizing biodegradable resin |
| JP2008068233A (en) * | 2006-09-15 | 2008-03-27 | Hitachi Plant Technologies Ltd | Nitrogen elimination measure and nitrogen removing apparatus |
-
2009
- 2009-11-19 JP JP2009264383A patent/JP5392719B2/en not_active Expired - Fee Related
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