JP2013184132A5 - - Google Patents
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- JP2013184132A5 JP2013184132A5 JP2012052466A JP2012052466A JP2013184132A5 JP 2013184132 A5 JP2013184132 A5 JP 2013184132A5 JP 2012052466 A JP2012052466 A JP 2012052466A JP 2012052466 A JP2012052466 A JP 2012052466A JP 2013184132 A5 JP2013184132 A5 JP 2013184132A5
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- activated carbon
- activated
- drying
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- carbonate
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 65
- 238000001035 drying Methods 0.000 claims description 21
- 239000002253 acid Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 10
- UIIMBOGNXHQVGW-UHFFFAOYSA-M NaHCO3 Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 8
- POECFFCNUXZPJT-UHFFFAOYSA-M sodium;carbonic acid;hydrogen carbonate Chemical compound [Na+].OC(O)=O.OC([O-])=O POECFFCNUXZPJT-UHFFFAOYSA-M 0.000 claims description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000001184 potassium carbonate Substances 0.000 claims description 6
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 6
- TYJJADVDDVDEDZ-UHFFFAOYSA-M Potassium bicarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 4
- 239000011736 potassium bicarbonate Substances 0.000 claims description 4
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 4
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 4
- 230000001172 regenerating Effects 0.000 claims description 4
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 4
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 3
- 229940094025 potassium bicarbonate Drugs 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims description 2
- 230000003213 activating Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 238000007873 sieving Methods 0.000 claims 1
- 239000003513 alkali Substances 0.000 description 9
- 238000002844 melting Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- NUJOXMJBOLGQSY-UHFFFAOYSA-N Manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 229910000460 iron oxide Inorganic materials 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- -1 alkali metal salt Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VASIZKWUTCETSD-UHFFFAOYSA-N manganese(II) oxide Inorganic materials [Mn]=O VASIZKWUTCETSD-UHFFFAOYSA-N 0.000 description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- 239000001187 sodium carbonate Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K Aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L Iron(II) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 229960003975 Potassium Drugs 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229960001716 benzalkonium Drugs 0.000 description 1
- CYDRXTMLKJDRQH-UHFFFAOYSA-N benzyl-dodecyl-dimethylazanium Chemical compound CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 CYDRXTMLKJDRQH-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
Description
従来、スケールの組成分析法として、これら酸に難溶解性の金属酸化物の溶解には、アルカリ溶融法が採用されている。アルカリ溶融法は、そのアルカリ溶融生成物が、弱酸で容易に溶解できる。
酸化アルミニウム：Ａｌ2Ｏ3＋アルカリ→Ａｌ2（ＯＨ）3、ＮａＡｌＯ2
酸化鉄：Ｆｅ2Ｏ3＋アルカリ→Ｆｅ（ＯＨ）3
つまり、難溶解性の金属酸化物にアルカリ金属塩、主に炭酸ナトリウムと溶融することで、難溶解性の金属酸化物を酸に溶解しやすいアルカリ塩にできる。
また、炭酸ナトリウム、炭酸カリウムの融点は、それぞれ８７０℃、８５０℃であるが、炭酸ナトリウムと炭酸カリウムの等モル混合物の融点は７８０℃である。炭酸ナトリウムと炭酸カリウムの等モル混合物の融点が低いために低い温度でアルカリ溶融ができる。 本発明は前記の従来技術の課題を解決するために、鋭意研究の結果、考案されたものであり、吸着性能の高い使用済活性炭の再生方法、賦活活性炭およびその製造方法を提供するものである。
Conventionally, as a composition analysis method for a scale, an alkali melting method has been employed for dissolving a metal oxide that is hardly soluble in these acids. In the alkali melting method, the alkali molten product can be easily dissolved with a weak acid.
Aluminum oxide: Al 2 O 3 + alkali → Al 2 (OH) 3 , NaAlO 2
Iron oxide: Fe 2 O 3 + alkali → Fe (OH) 3
That is, by melting an alkali metal salt, mainly sodium carbonate, in a hardly soluble metal oxide, the hardly soluble metal oxide can be easily dissolved in an acid.
The melting points of sodium carbonate and potassium carbonate are 870 ° C. and 850 ° C., respectively, but the melting point of an equimolar mixture of sodium carbonate and potassium carbonate is 780 ° C. Since the melting point of an equimolar mixture of sodium carbonate and potassium carbonate is low, alkali melting can be performed at a low temperature. The present invention has been devised as a result of intensive studies to solve the above-described problems of the prior art, and provides a method for regenerating used activated carbon having high adsorption performance, an activated activated carbon, and a method for producing the same. .
第１の発明は、水処理で使用した使用済活性炭を乾燥し、前記乾燥後の使用済活性炭を賦活再生し、前記賦活再生された賦活活性炭を酸洗浄・水洗いし、前記乾燥前または乾燥後の使用済活性炭に炭酸水素塩と、炭酸塩との少なくともいずれか一方を添加することで、再生炭を得ることを特徴とする使用済活性炭の再生方法である。
また、第１の発明は、前記乾燥前または乾燥後の使用済活性炭に、炭酸水素ナトリウムと炭酸水素カリウムとの混合物、または、炭酸ナトリウムと炭酸カリウムとの混合物、または、炭酸水素ナトリウムと炭酸カリウムとの混合物、または、炭酸ナトリウムと炭酸水素カリウムとの混合物を添加することが好ましい。
また、第１の発明は、前記使用済活性炭が高度浄水処理で使用されたものであることが好ましい。
第２の発明は、水処理で使用した使用済活性炭を乾燥する乾燥工程と、前記乾燥前または乾燥後の使用済活性炭に炭酸水素塩と、炭酸塩との少なくともいずれか一方を添加する添加工程と、前記乾燥後の使用済活性炭を賦活再生して賦活活性炭を得る賦活工程と、前記賦活再生された賦活活性炭を酸洗浄・水洗いする酸洗浄・水洗工程と、を備えたことを特徴とする賦活活性炭の製造方法である。
第３の発明は、第２の発明の前記賦活活性炭の製造方法によって得られることを特徴とする賦活活性炭である。
活性炭に捕捉された金属水酸化物は、賦活焼成での熱影響により金属酸化物にその形態が変化し、酸に難溶解性になる。
水酸化アルミニウム Ａｌ（ＯＨ） 3 → 酸化アルミニウム：Ａｌ 2 Ｏ 3
水酸化鉄 Ｆｅ（ＯＨ） 3 → 酸化鉄：Ｆｅ 2 Ｏ 3
二酸化マンガン ＭｎＯ 2 （熱影響により酸による除去が困難になる）
つまり、賦活焼成前に、使用済活性炭に炭酸水素塩または炭酸塩を共存させることで賦活焼成での熱影響を受けて難溶解性の金属酸化物になるのを防止し、賦活焼成で酸に可溶の金属水酸化物または炭酸塩にする。
酸化アルミニウム：Ａｌ 2 Ｏ 3 ＋アルカリ→Ａｌ 2 （ＯＨ） 3 、ＮａＡｌＯ 2
酸化鉄：Ｆｅ 2 Ｏ 3 ＋アルカリ→Ｆｅ（ＯＨ） 3
二酸化マンガン：ＭｎＯ 2 ＋アルカリ→Ｍｎ（ＯＨ） 4
The first invention, the spent activated carbon used in water treatment and dried, the spent activated carbon after drying was activated regeneration, the activated regenerated activated carbon was acid washed and washed with water, the drying before or after drying This is a method for regenerating used activated carbon, characterized in that regenerated charcoal is obtained by adding at least one of hydrogen carbonate and carbonate to the used activated carbon.
The first invention, the spent activated carbon before Symbol before drying or after drying, a mixture of sodium bicarbonate and potassium bicarbonate, or a mixture of sodium carbonate and potassium carbonate, or sodium bicarbonate and carbonate a mixture of potassium, or, preferably a benzalkonium be added a mixture of sodium carbonate and potassium hydrogen carbonate.
In the first invention, the used activated carbon is preferably used in advanced water purification treatment.
The second invention is a drying step of drying the used activated carbon used in the water treatment, and an addition step of adding at least one of a bicarbonate and a carbonate to the used activated carbon before or after the drying. When, characterized by comprising the activation step of obtaining the spent activated carbon activated reproduced by activated carbon after the drying, and a acid washing and water washing step of acid washing and water washing the activated regenerated activated carbon It is a manufacturing method of activated activated carbon.
3rd invention is the activated activated carbon characterized by being obtained by the manufacturing method of the said activated activated carbon of 2nd invention.
The form of the metal hydroxide trapped by the activated carbon is changed to a metal oxide due to the heat effect of the activation firing, and becomes hardly soluble in acid.
Aluminum hydroxide Al (OH) 3 → Aluminum oxide: Al 2 O 3
Iron hydroxide Fe (OH) 3 → Iron oxide: Fe 2 O 3
Manganese dioxide MnO 2 (It becomes difficult to remove by acid due to heat)
In other words, before activated firing, hydrogenated carbonate or carbonate is allowed to coexist with the used activated carbon to prevent it from becoming a hardly soluble metal oxide due to the heat effect of activated firing, and to the acid by activated firing. Soluble metal hydroxide or carbonate.
Aluminum oxide: Al 2 O 3 + alkali → Al 2 (OH) 3 , NaAlO 2
Iron oxide: Fe 2 O 3 + alkali → Fe (OH) 3
Manganese dioxide: MnO 2 + alkali → Mn (OH) 4
Claims (6)
前記乾燥後の使用済活性炭を賦活再生し、
前記賦活再生された賦活活性炭を酸洗浄・水洗いし、
前記乾燥前または乾燥後の使用済活性炭に炭酸水素塩と、炭酸塩との少なくともいずれか一方を添加することで、再生炭を得ることを特徴とする使用済活性炭の再生方法。 Dry used activated carbon used in water treatment ,
Activated and regenerated used activated carbon after drying,
The activated activated carbon that has been activated and regenerated is washed with acid and washed with water,
The drying before or bicarbonate in the spent activated carbon after drying, by adding at least one of the carbonate method for regenerating spent activated carbon, characterized in that to obtain a reproduced charcoal.
前記乾燥前または乾燥後の使用済活性炭に、以下（１）〜（４）のいずれかを添加することを特徴とする使用済活性炭の再生方法。
（１）炭酸水素ナトリウムと炭酸水素カリウムとの混合物
（２）炭酸ナトリウムと炭酸カリウムとの混合物
（３）炭酸水素ナトリウムと炭酸カリウムとの混合物
（４）炭酸ナトリウムと炭酸水素カリウムとの混合物 In the claim 1,
Before Symbol the spent activated carbon after drying before or drying, the following (1) to a method of reproducing the spent activated carbon, characterized by the addition of either (4).
(1) A mixture of sodium bicarbonate and potassium bicarbonate
(2) Mixture of sodium carbonate and potassium carbonate
(3) A mixture of sodium bicarbonate and potassium carbonate
(4) Mixture of sodium carbonate and potassium bicarbonate
前記使用済活性炭が高度浄水処理で使用されたものであることを特徴とする使用済活性炭の再生方法。 In Claims 1 and 2,
The method of reproducing the spent activated carbon, wherein the spent activated carbon is one that was used in the advanced water treatment.
前記乾燥前または乾燥後の使用済活性炭に炭酸水素塩と、炭酸塩との少なくともいずれか一方を添加する添加工程と、
前記乾燥後の使用済活性炭を賦活再生して賦活活性炭を得る賦活工程と、
前記賦活再生された賦活活性炭を酸洗浄・水洗いする酸洗浄・水洗工程と、
を備えたことを特徴とする賦活活性炭の製造方法。 A drying process for drying used activated carbon used in water treatment ;
The drying before or bicarbonate in the spent activated carbon after drying, the added step of adding at least one of the carbonate,
Activating and regenerating the activated carbon after drying to obtain activated activated carbon;
Acid cleaning / washing step of washing the activated activated carbon that has been activated and regenerated with water,
Method for producing activated carbon, characterized in that it comprises a.
前記賦活工程と前記酸洗浄・水洗工程との間に有し、賦活再生された賦活活性炭を所定の粒度に調整する篩分工程と、
前記酸洗浄・水洗工程の後に有し、酸洗浄・水洗いされた賦活活性炭を乾燥する乾燥工程と、
を備えたことを特徴とする賦活活性炭の製造方法。 In claim 4,
A sieving step for adjusting the activated activated carbon that has been activated and regenerated to have a predetermined particle size between the activation step and the acid washing / water washing step,
After the acid washing / water washing step, a drying step for drying the activated activated carbon that has been acid washed / water washed,
A method for producing activated activated carbon, comprising:
前記賦活活性炭の製造方法によって得られることを特徴とする賦活活性炭。 In the said Claim 4 , 5,
An activated activated carbon obtained by the method for producing an activated activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012052466A JP5792664B2 (en) | 2012-03-09 | 2012-03-09 | Method for regenerating used activated carbon, activated activated carbon and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012052466A JP5792664B2 (en) | 2012-03-09 | 2012-03-09 | Method for regenerating used activated carbon, activated activated carbon and method for producing the same |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2013184132A JP2013184132A (en) | 2013-09-19 |
| JP2013184132A5 true JP2013184132A5 (en) | 2015-01-22 |
| JP5792664B2 JP5792664B2 (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| JP2012052466A Active JP5792664B2 (en) | 2012-03-09 | 2012-03-09 | Method for regenerating used activated carbon, activated activated carbon and method for producing the same |
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| JP (1) | JP5792664B2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6165598B2 (en) * | 2013-11-13 | 2017-07-19 | 水ｉｎｇ株式会社 | Regeneration method of plant-based spherical activated carbon and reuse method of the regenerated plant-based spherical activated carbon in water purification treatment |
| CN107473473A (en) * | 2017-10-10 | 2017-12-15 | 丁玉琴 | A kind of household water purifier |
| CN111889089A (en) * | 2020-05-12 | 2020-11-06 | 天津天一爱拓科技有限公司 | System and method for regenerating waste activated carbon |
| CN115121235B (en) * | 2021-03-29 | 2023-11-17 | 湖南大学 | Regeneration and utilization method of edible tree fungus charcoal for adsorbing heavy metals |
| CN115193428A (en) * | 2021-04-14 | 2022-10-18 | 上海交通大学 | Regeneration method of waste activated carbon containing perfluorinated compounds |
| CN113231017B (en) * | 2021-04-29 | 2023-07-18 | 广东工业大学 | Modified superfine powder activated carbon and preparation method and application thereof |
| CN114804104A (en) * | 2022-02-21 | 2022-07-29 | 江苏联兴成套设备制造有限公司 | Organic fermentation reinforced CO 2 Method for regenerating waste active carbon by activating pore-forming |
| CN114634722A (en) * | 2022-04-06 | 2022-06-17 | 安徽固瑞特新材料科技有限公司 | Method for improving structure of regenerated carbon black |
| CN115970667B (en) * | 2023-02-22 | 2024-03-19 | 成都华域环保有限公司 | Regeneration method of waste powdery activated carbon |
| CN116282328B (en) * | 2023-02-27 | 2023-10-13 | 中国科学院生态环境研究中心 | Method for efficiently regenerating mineralized synergistic activated carbon by catalyzing perfluorinated compounds at low temperature |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA785864B (en) * | 1978-10-18 | 1979-12-27 | Anglo Amer Corp South Africa | Regeneration of activated carbon |
| JPH09225260A (en) * | 1996-02-20 | 1997-09-02 | Ebara Corp | Regenerating method of activated carbon based material |
| JP2005034742A (en) * | 2003-07-15 | 2005-02-10 | Ebara Engineering Service Co Ltd | Method for treating spent carbon and usage of the carbon |
| JP3746509B1 (en) * | 2004-08-20 | 2006-02-15 | 日本エンバイロケミカルズ株式会社 | Spherical activated carbon and its manufacturing method |
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2012
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