JP2003080062A - Method for capturing specific chemical substance and adsorbent used for the same - Google Patents
Method for capturing specific chemical substance and adsorbent used for the sameInfo
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- JP2003080062A JP2003080062A JP2001278836A JP2001278836A JP2003080062A JP 2003080062 A JP2003080062 A JP 2003080062A JP 2001278836 A JP2001278836 A JP 2001278836A JP 2001278836 A JP2001278836 A JP 2001278836A JP 2003080062 A JP2003080062 A JP 2003080062A
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- temperature
- adsorbent
- chemical substance
- carbonization
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、室内空間もしくは
工場等の屋内・屋外空間等の気相中、又は、河川、下水
もしくは湾内等の沿岸海域等の液相中に存在する特定化
学物質、例えばアンモニア及びアンモニア化合物等の塩
基性悪臭化学物質、ホルムアルデヒド等のシックハウス
症候群や化学物質過敏症を引き起こす原因物質といわれ
る揮発性有機化合物や、エストラジオール等の内分泌撹
乱化学物質（環境ホルモン）もしくはその関連物質を捕
集するための捕集方法及びこれに用いる吸着材に関す
る。TECHNICAL FIELD The present invention relates to a specific chemical substance existing in a gas phase in an indoor space or an indoor / outdoor space such as a factory, or in a liquid phase in a river, sewage or a coastal sea area such as a bay, For example, basic malodorous chemicals such as ammonia and ammonia compounds, volatile organic compounds such as formaldehyde that cause sick house syndrome and chemical hypersensitivity, and endocrine disrupting chemicals (environmental hormones) such as estradiol or related substances The present invention relates to a collecting method for collecting water and an adsorbent used therefor.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来、
室内空間からシックハウス症候群を引き起こす原因物質
（ホルムアルデヒド等）を捕集して除去するための手段
としては決め手となるような有効な手段に乏しく、換気
等による希釈や、原因物質を発生させる建材等を除去・
交換するなどの手段により対処されているに過ぎない。2. Description of the Related Art Conventionally, the problems to be solved by the invention
There is no effective means that can be the decisive means for collecting and removing the causative substance (formaldehyde etc.) that causes sick house syndrome from the indoor space, and there is a lack of effective means such as ventilation dilution and building materials that generate the causative substance. Removal·
It is only dealt with by means such as replacement.
【０００３】また、河川等に含まれる内分泌撹乱物質に
ついても微量成分でもあり選択的に捕集するための有効
な手段はない。Further, endocrine disrupting substances contained in rivers and the like are also trace components and there is no effective means for selectively collecting them.
【０００４】一方、木材を炭化させて得られる木炭につ
いては、燃料としての本来の用途に加え、近年、家屋の
床下における調湿材や微生物の繁殖床にして河川の水質
浄化材等の用途への利用が提案もしくは試行されてい
る。On the other hand, as for charcoal obtained by carbonizing wood, in addition to the original use as a fuel, in recent years, it has been used as a humidity control material under the floor of a house or a breeding floor for microorganisms to be used as a water purification material for rivers. Has been proposed or is being tested.
【０００５】本発明は、このような事情に鑑みてなされ
たものであり、その目的とするところは、塩基性悪臭化
学物質、シックハウス症候群や化学物質過敏症を引き起
こす原因物質といわれる揮発性有機化合物や、内分泌撹
乱化学物質もしくはその関連物質等の特定化学物質を有
効に捕集し得る捕集方法及びこれに用いる吸着材を提供
することにある。The present invention has been made in view of such circumstances, and an object thereof is a volatile organic compound which is said to be a causative substance causing a basic malodorous chemical substance, sick house syndrome and chemical substance hypersensitivity. Another object of the present invention is to provide a trapping method capable of effectively trapping a specific chemical substance such as an endocrine disrupting chemical substance or a related substance thereof, and an adsorbent used for the trapping method.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明者らは、まず、吸着材を用いて上記の如き化
学物質を吸着（選択的吸着）させることにより捕集する
方法に着目した。そして、竹材を炭化させることにより
得られる竹炭が種々の化学物質に対する吸着能を有する
のではないか、又、その吸着能の発揮が主として炭化温
度の如何によって大きく左右されるのではないかという
点を推測し、種々の試験を行うことにより上記点を確認
して以下の本発明を完成させるに至った。In order to achieve the above object, the inventors of the present invention firstly propose a method for collecting a chemical substance as described above by adsorbing (selectively adsorbing) a chemical substance using an adsorbent. I paid attention. And, it may be that bamboo charcoal obtained by carbonizing bamboo material has adsorption ability for various chemical substances, and that the exertion of the adsorption ability is largely influenced by the carbonization temperature. The above-mentioned points were confirmed by carrying out various tests, and the present invention described below was completed.
【０００７】すなわち、捕集方法に係る請求項１では、
アンモニア、ホルムアルデヒド、ベンゼン、トルエン、
及び、エストラジオールの内のいずれか一種又は二種以
上の組み合わせから成る特定化学物質を捕集するための
捕集方法を対象として、竹材を上記特定化学物質に応じ
た特定炭化温度で炭化させることにより吸着材として用
いる竹炭を用意し、この吸着材を上記特定化学物質と接
触させ、上記特定化学物質を上記吸着材に吸着させるこ
とにより捕集するようにした。That is, in claim 1 relating to the collecting method,
Ammonia, formaldehyde, benzene, toluene,
And, by targeting a collection method for collecting a specific chemical substance consisting of one kind or a combination of two or more kinds of estradiol, by carbonizing a bamboo material at a specific carbonization temperature according to the specific chemical substance, Bamboo charcoal used as an adsorbent was prepared, and the adsorbent was brought into contact with the specific chemical substance, and the specific chemical substance was adsorbed on the adsorbent to collect the adsorbent.
【０００８】この場合、吸着材の用意においては、捕集
対象の特定化学物質に対し高度な吸着能を発揮し得る吸
着材とするために、その捕集対象の特定化学物質に応じ
た適切な炭化温度で炭化処理して竹炭を得るようにすれ
ばよい。この炭化処理としては好ましくは竹材の乾燥、
炭化及び精錬の各工程に応じて所定の昇温度合（昇温速
度）で昇温・加熱しあるいは併せて所定温度での保持
（温度維持）を行い、その後、所定の冷却度合（冷却速
度）で冷却工程を行えばよい。そして、特定化学物質を
吸着させるには、気体、蒸気もしくは液体の状態で含ま
れる気相中もしくは液相中に上記吸着材を配置もしくは
投入し、特定化学物質と接触させることにより、上記吸
着材に特定化学物質を吸着させるようにすればよい。こ
れにより、特定化学物質を吸着材に対し高率でかつ短時
間で吸着させることができ、気相もしくは液相に含まれ
る特定化学物質のほぼ全量を捕集することができる。In this case, when preparing the adsorbent, in order to obtain an adsorbent capable of exhibiting a high degree of adsorption ability with respect to the specific chemical substance to be collected, the adsorbent is appropriate according to the specific chemical substance to be collected. Bamboo charcoal may be obtained by carbonization at the carbonization temperature. The carbonization treatment is preferably drying of bamboo materials,
Depending on each step of carbonization and refining, the temperature is raised / heated at a predetermined temperature rise rate (temperature rise rate) or is also held at a predetermined temperature (temperature maintenance), and then a predetermined cooling degree (cooling rate) Then, the cooling step may be performed. Then, in order to adsorb the specific chemical substance, the adsorbent is placed or placed in a gas phase or a liquid phase contained in a state of gas, vapor or liquid, and brought into contact with the specific chemical substance, thereby adsorbing the specific chemical substance. The specific chemical substance may be adsorbed on. As a result, the specific chemical substance can be adsorbed to the adsorbent at a high rate and in a short time, and almost the entire amount of the specific chemical substance contained in the gas phase or the liquid phase can be collected.
【０００９】上記の請求項１の捕集方法で用いる吸着材
に係る請求項２では、アンモニア、ホルムアルデヒド、
ベンゼン、トルエン、及び、エストラジオールの内のい
ずれか一種又は二種以上の組み合わせから成る特定化学
物質を捕集するために用いる吸着材として、竹材を上記
特定化学物質に応じた特定炭化温度で炭化させることに
より得られる竹炭を用いてなることとした。In claim 2 relating to the adsorbent used in the collection method of claim 1, ammonia, formaldehyde,
Bamboo wood is carbonized at a specific carbonization temperature according to the above-mentioned specific chemical substance, as an adsorbent used for collecting the specific chemical substance consisting of any one kind or a combination of two or more kinds of benzene, toluene and estradiol. It was decided to use the bamboo charcoal thus obtained.
【００１０】このような吸着材は、特に建材の接着剤等
から揮発していわゆるシックハウス症候群を引き起こす
原因物質（例えばホルムアルデヒド等）を捕集するため
に、その原因物質を含む気相と接触させることにより上
記原因物質を捕集する目的に好適に用いられる。また、
液相に含まれる特定化学物質（例えばエストラジオール
等）の捕集のためにその特定化学物質を含有する液相中
に浸漬させて用いることも可能である。さらに、上記の
気相又は液相に限らず、固相に存在する特定化学物質の
捕集、例えば土壌中に存在し地下水又は雨水等の水に溶
解して流出する特定化学物質を捕集するためにも有効に
用いられる。Such an adsorbent is brought into contact with a gas phase containing a causative substance in order to collect a causative substance (for example, formaldehyde) which volatilizes from an adhesive or the like of a building material and causes so-called sick house syndrome. Is suitably used for the purpose of collecting the above-mentioned causative substance. Also,
It is also possible to use by immersing it in a liquid phase containing the specific chemical substance in order to collect the specific chemical substance (eg, estradiol) contained in the liquid phase. Further, not limited to the above gas phase or liquid phase, collection of specific chemical substances existing in the solid phase, for example, collection of specific chemical substances existing in soil and dissolved in water such as groundwater or rainwater and flowing out It is also effectively used for.
【００１１】具体的には、アンモニア等の塩基性悪臭化
学物質を特定化学物質とする場合の請求項３では、アン
モニアを捕集するための吸着材として、竹材を４００℃
から６００℃の範囲の炭化温度で炭化させることにより
得られる竹炭を用いることとした。この場合、アンモニ
アに対する吸着能をより高く発揮させる吸着材とするに
は、炭化温度として好ましくは４５０℃〜５５０℃の範
囲、実質的に５００℃前後とすればよい。実質的に５０
０℃前後の炭化温度で炭化処理した竹炭によりアンモニ
アを極めて高率でかつ短時間で吸着させ得る。Specifically, in the case where a basic malodorous chemical substance such as ammonia is used as the specific chemical substance, in the third aspect, bamboo is used as an adsorbent for trapping ammonia at 400 ° C.
It was decided to use bamboo charcoal obtained by carbonizing at a carbonization temperature in the range from 1 to 600 ° C. In this case, the carbonization temperature is preferably in the range of 450 ° C. to 550 ° C., and is substantially around 500 ° C., in order to obtain an adsorbent that exhibits a higher adsorption capacity for ammonia. Substantially 50
Bamboo charcoal carbonized at a carbonization temperature of around 0 ° C. can adsorb ammonia at a very high rate and in a short time.
【００１２】ホルムアルデヒドを特定化学物質とする場
合の請求項４では、ホルムアルデヒドを捕集するための
吸着材として、竹材を４００℃から１１００℃の範囲の
炭化温度で炭化させることにより得られる竹炭を用いる
こととした。この場合、ホルムアルデヒドに対する吸着
能をより高く発揮させる吸着材とするには、炭化温度と
して５００℃〜１０００℃の範囲、中でも５００℃〜７
００℃の範囲とすればよい。In the case where formaldehyde is used as the specific chemical substance, bamboo charcoal obtained by carbonizing bamboo at a carbonization temperature in the range of 400 ° C. to 1100 ° C. is used as the adsorbent for collecting formaldehyde. I decided. In this case, in order to obtain an adsorbent capable of exhibiting a higher adsorbability for formaldehyde, the carbonization temperature is in the range of 500 ° C to 1000 ° C, especially 500 ° C to 7 ° C.
The temperature may be in the range of 00 ° C.
【００１３】トルエン又はベンゼンあるいは両者を特定
化学物質とする場合の請求項５では、トルエン又はベン
ゼンを捕集するための吸着材として、竹材を７００℃か
ら１１００℃の範囲の炭化温度で炭化させることにより
得られる竹炭を用いることとした。この場合、上記のト
ルエン又はベンゼンに対する吸着能をより高く発揮させ
る吸着材とするには、炭化温度として８００℃〜１１０
０℃の範囲、９００℃〜１１００℃の範囲、実質的に１
０００℃前後とすればよい。なお、上限温度としては１
１００℃以上としてもよいが、１０００℃前後の炭化温
度で炭化処理した竹炭によりトルエン又はベンゼンに対
する十分な吸着能が発揮されるため、高温での炭化処理
の便を考慮して１１００℃までの範囲の炭化温度で炭化
処理すれば十分に高度な実用性能を得ることができる。
また、上記のトルエン及びベンゼンに加えてキシレン、
ノネナール又はインドールについても上記のトルエン又
はベンゼンを特定化学物質とする吸着材と同様の炭化温
度（炭化温度範囲）で炭化させて得られる竹炭を用いた
吸着材により有効に吸着能を発揮させることが可能であ
る。In the case of using toluene or benzene or both as specific chemical substances, in claim 5, carbonization of bamboo material at a carbonization temperature in the range of 700 ° C to 1100 ° C is performed as an adsorbent for collecting toluene or benzene. It was decided to use the bamboo charcoal obtained by. In this case, in order to obtain an adsorbent that exhibits a higher adsorption capacity for the above-mentioned toluene or benzene, the carbonization temperature is 800 ° C to 110 ° C.
0 ° C range, 900 ° C-1100 ° C range, substantially 1
It may be about 000 ° C. The upper limit temperature is 1
The temperature may be 100 ° C or higher, but bamboo charcoal carbonized at a carbonization temperature of around 1000 ° C exhibits sufficient adsorption capacity for toluene or benzene. Therefore, considering the convenience of carbonization at high temperature, the range up to 1100 ° C If the carbonization treatment is performed at a carbonization temperature of, sufficiently high practical performance can be obtained.
In addition to the above toluene and benzene, xylene,
With respect to nonenal or indole, the adsorbent using bamboo charcoal obtained by carbonizing at the same carbonization temperature (carbonization temperature range) as the above-mentioned adsorbent using toluene or benzene as the specific chemical substance can effectively exhibit the adsorption ability. It is possible.
【００１４】また、エストラジオールを特定化学物質と
する場合の請求項６では、エストラジオールを捕集する
ための吸着材として、竹材を４００℃から１１００℃の
範囲の炭化温度で炭化させることにより得られる竹炭を
用いることとした。この場合、エストラジオールに対す
る吸着能をより高く発揮させる吸着材とするには、炭化
温度として５００℃〜１１００℃の範囲、７００℃〜１
１００℃の範囲、より好ましくは９００℃〜１１００℃
の範囲、実質的には１０００℃前後とすればよい。な
お、この請求項６の場合にも、上記の請求項５の場合と
同様に、上限温度を１１００℃以上としてもよいが、１
０００℃前後の炭化温度で炭化処理した竹炭によりエス
トラジオールに対する十分な吸着能が発揮されるため、
高温での炭化処理の便を考慮して１１００℃までの範囲
の炭化温度で炭化処理すれば十分に高度な実用性能を得
ることができる。Further, in the case of using estradiol as the specific chemical substance, in claim 6, bamboo charcoal obtained by carbonizing bamboo material at a carbonization temperature in the range of 400 ° C. to 1100 ° C. is used as an adsorbent for collecting estradiol. Was decided to be used. In this case, in order to obtain an adsorbent capable of exhibiting higher adsorption ability for estradiol, the carbonization temperature is in the range of 500 ° C to 1100 ° C, 700 ° C to 1
100 ° C. range, more preferably 900 ° C. to 1100 ° C.
The range may be substantially 1000 ° C. In the case of claim 6 as well, as in the case of claim 5, the upper limit temperature may be 1100 ° C. or higher.
Since the charcoal-treated bamboo charcoal at a carbonization temperature of around 000 ° C exhibits sufficient adsorption ability for estradiol,
Considering the convenience of carbonization at a high temperature, carbonization at a carbonization temperature in the range of up to 1100 ° C. makes it possible to obtain sufficiently high practical performance.
【００１５】ここで、上記の「エストラジオール」とは
具体的には１７β−エストラジオールのことである。こ
の１７β−エストラジオールは、内分泌撹乱物質（環境
ホルモン）又はその関連物質といわれているものであ
り、人畜由来ホルモンの一種である。Here, the above-mentioned "estradiol" is specifically 17β-estradiol. This 17β-estradiol is said to be an endocrine disrupting substance (environmental hormone) or its related substance, and is a kind of human-livestock-derived hormone.
【００１６】[0016]
【発明の効果】以上、説明したように、請求項１の特定
化学物質の捕集方法によれば、シックハウス症候群や化
学物質過敏症を引き起こす原因物質といわれるホルムア
ルデヒド等の揮発性有機化合物や、内分泌撹乱化学物質
もしくはその関連物質であるエストラジオールなどの有
害な特定化学物質を高率かつ迅速に捕集することができ
る。しかも、その捕集を特定炭化温度で炭化させること
により生成した竹炭を用意し、特定化学物質を含有する
気相又は液相と接触させるだけという容易な作業により
達成することができる。As described above, according to the method for collecting a specific chemical substance according to claim 1, a volatile organic compound such as formaldehyde, which is said to be a causative substance causing sick house syndrome or chemical substance hypersensitivity, and endocrine It is possible to rapidly and rapidly collect harmful specific chemical substances such as disturbing chemical substances or related substances such as estradiol. Moreover, it can be achieved by an easy operation of preparing a bamboo charcoal produced by carbonizing the collection at a specific carbonization temperature and contacting it with a gas phase or a liquid phase containing a specific chemical substance.
【００１７】また、請求項２の特定化学物質の吸着材に
よれば、この吸着材を用いることにより請求項１の捕集
方法を確実に実施して上記の有害な特定化学物質の捕集
を実現させることができる。Further, according to the adsorbent of the specific chemical substance of claim 2, by using this adsorbent, the trapping method of claim 1 can be reliably carried out to trap the harmful specific chemical substance. Can be realized.
【００１８】請求項３〜請求項６のいずれかの吸着材に
よれば、上記請求項２の吸着材をより具体化することが
できる。請求項３によればアンモニアを捕集するために
適した吸着材を、請求項４によればホルムアルデヒドを
捕集するために適した吸着材を、請求項５によればトル
エン又はベンゼンを捕集するために適した吸着材を、請
求項６によればエストラジオールを捕集するために適し
た吸着材をそれぞれ提供することができる。According to the adsorbent of any one of claims 3 to 6, the adsorbent of claim 2 can be further embodied. According to claim 3 an adsorbent suitable for collecting ammonia, according to claim 4 an adsorbent suitable for collecting formaldehyde and according to claim 5 toluene or benzene. According to the sixth aspect, it is possible to provide an adsorbent that is suitable for collecting estradiol, and an adsorbent that is suitable for collecting estradiol.
【００１９】[0019]
【発明の実施の形態】本発明の実施形態として挙げられ
る吸着材は次の手順により製造されて用意される。BEST MODE FOR CARRYING OUT THE INVENTION The adsorbent described as an embodiment of the present invention is manufactured and prepared by the following procedure.
【００２０】すなわち、竹材（例えば孟宗竹等）を炭化
炉に応じて所定の長さ（例えば１ｍ程度）毎に切断し、
さらに好ましくは所定の周長（例えば６〜７ｃｍ）毎に
縦割りし、これらを縦向きにして炭化炉内に充填する。
なお、炭化炉に充填する前に予備的な乾燥工程を実施す
るようにしてもよい。この場合には燻煙熱により例えば
８０℃〜１５０℃の範囲で数日間（例えば４日程度）持
続させればよい。That is, bamboo material (for example, Moso bamboo) is cut into pieces each having a predetermined length (for example, about 1 m) according to the carbonizing furnace,
More preferably, it is vertically divided for each predetermined peripheral length (for example, 6 to 7 cm), and these are vertically oriented and filled in the carbonization furnace.
A preliminary drying step may be performed before filling the carbonization furnace. In this case, the smoke heat may be maintained for several days (for example, about 4 days) in the range of 80 ° C to 150 ° C.
【００２１】炭化炉に充填した後は、原則として乾燥工
程、炭化工程及び精錬工程を行った後に、冷却工程を行
う。After filling the carbonization furnace, as a general rule, a drying step, a carbonization step and a refining step are carried out, followed by a cooling step.
【００２２】乾燥工程は外気温温度からほぼ２５０℃
（乾燥温度）まで所定時間（例えば３時間〜３時間半）
かけて昇温させて行う。この後、炭化工程は上記乾燥温
度から目標の炭化温度との間の中間温度までを所定時間
をかけて昇温し、その中間温度到達後に所定時間だけそ
の中間温度のままで保持（キープ）することにより行
う。次に、精錬工程は、上記中間温度から目標の炭化温
度まで所定時間をかけて昇温し、上記目標炭化温度に到
達した後にその目標炭化温度のままでキープする。最後
に炭化炉の加熱を停止し、炉内に充填したまま冷却工程
を行う。この冷却工程はほぼ１００℃になるまで放置す
ることにより自然冷却させる。The drying process is performed from the ambient temperature to about 250 ° C.
Predetermined time until (drying temperature) (for example, 3 hours to 3.5 hours)
It is carried out by raising the temperature. After that, in the carbonization step, the intermediate temperature between the drying temperature and the target carbonization temperature is raised over a predetermined period of time, and after reaching the intermediate temperature, the intermediate temperature is maintained for a predetermined period of time (keep). By doing. Next, in the refining process, the temperature is raised from the intermediate temperature to the target carbonization temperature over a predetermined time, and after reaching the target carbonization temperature, the target carbonization temperature is kept as it is. Finally, the heating of the carbonization furnace is stopped, and the cooling step is performed while the inside of the furnace is filled. In this cooling step, it is naturally cooled by leaving it until it reaches about 100 ° C.
【００２３】上記の炭化工程での中間温度は目標の炭化
温度により変化させる。例えば目標の炭化温度が１００
０℃であれば中間温度は７００℃とし、目標炭化温度が
７００℃であれば中間温度は５００℃とすればよい。目
標炭化温度が５００℃である場合には炭化工程と精錬工
程との２段階に分けずに、乾燥工程終了後にその目標炭
化温度である５００℃まで昇温させるようにしてもよ
い。The intermediate temperature in the above carbonization step is changed according to the target carbonization temperature. For example, the target carbonization temperature is 100
If the temperature is 0 ° C., the intermediate temperature may be 700 ° C., and if the target carbonization temperature is 700 ° C., the intermediate temperature may be 500 ° C. When the target carbonization temperature is 500 ° C., the temperature may be raised to the target carbonization temperature of 500 ° C. after the completion of the drying process without dividing into two steps of the carbonization process and the refining process.
【００２４】上記の目標炭化温度は吸着材として使用す
る吸着対象に応じて決定する。炭化温度の如何によって
最も高い吸着能を発揮する対象の種類（化学物質の種
類）が異なるからである。例えば目標の炭化温度を５０
０℃、７００℃及び１０００℃の３種類に設定した場合
には、吸着対象がアンモニアであれば５００℃で炭化処
理した竹炭が最も高い吸着能を発揮し、同様にホルムア
ルデヒドであれば１０００℃のものがやや劣るものの５
００℃、７００℃及び１０００℃のいずれの竹炭であっ
ても高い吸着能を発揮し、ベンゼン又はトルエンであれ
ば１０００℃の竹炭が最も高く以下７００℃、５００℃
の順で吸着能を発揮し、β−エストラジオールであれば
上記のトルエン等と同様に１０００℃の竹炭が最も高く
以下７００℃、５００℃の順で吸着能を発揮することに
なる。また、吸着対象がキシレン、ノネナール又はイン
ドールである場合においても上記のトルエン又はベンゼ
ンを吸着対象とする場合と同様に１０００℃の竹炭が最
も高く以下７００℃、５００℃の順で吸着能を発揮す
る。The above target carbonization temperature is determined according to the adsorption target used as the adsorbent. This is because the type of target (type of chemical substance) that exhibits the highest adsorption capacity differs depending on the carbonization temperature. For example, the target carbonization temperature is 50
When three types of 0 ° C, 700 ° C, and 1000 ° C are set, if the adsorption target is ammonia, bamboo charcoal carbonized at 500 ° C exhibits the highest adsorption capacity, and similarly if formaldehyde is 1000 ° C. Things are a little inferior 5
Bamboo charcoal of any of 00 ° C, 700 ° C and 1000 ° C exhibits a high adsorption capacity, and in the case of benzene or toluene, bamboo charcoal of 1000 ° C is the highest and below 700 ° C and 500 ° C.
In the case of β-estradiol, bamboo charcoal at 1000 ° C. is the highest in the case of β-estradiol, and the adsorbing ability at 700 ° C. and 500 ° C. is the highest. Even when xylene, nonenal, or indole is to be adsorbed, bamboo charcoal of 1000 ° C. is the highest and exhibits adsorbing ability in the order of 700 ° C. and 500 ° C. in the same manner as in the case of adsorbing toluene or benzene. .
【００２５】以上により生成された竹炭を吸着材として
用いるには、吸着対象に応じて決定される使用場所を考
慮してその使用場所に適した形状・サイズに上記竹炭を
加工すればよい。例えば１０〜２０ｃｍ程度の固形状又
は数ｃｍ程度の小片状にそれぞれ破砕したり、又は、粒
状もしくは粉末状に加工したりするようにする。吸着材
が固形状又は小片状の場合には、その吸着材を通気もし
くは通水可能なネットもしくは容器に収容して吸着対象
の化学物質を含有する気相中に配置するか又は液相中に
浸漬するようにすればよい。上記粉末状等の如くサイズ
が小さい程、吸着対象の化学物質と接触し得る表面積が
増大するため、吸着能を効率よく発揮させる上で好まし
い。その反面、粒状もしくは粉末状にした場合にはその
吸着材を収容するための容器や保持するための工夫が必
要になる。粒状であれば例えば目の細かいネットもしく
は不織布等により形成された袋内に収容するか、あるい
は、粉末状であれば適当な接着剤又は粘結剤と混合して
所定サイズのタブレット形状に成形するようにすればよ
い。そして、上記と同様に気相中に配置するか液相中に
浸漬するかすればよい。In order to use the bamboo charcoal generated as described above as an adsorbent, the bamboo charcoal may be processed into a shape and size suitable for the place of use in consideration of the place of use determined according to the object to be adsorbed. For example, it is crushed into a solid form of about 10 to 20 cm or a small piece of about several cm, or processed into a granular form or a powder form. If the adsorbent is solid or in the form of small pieces, place the adsorbent in a net or container that allows ventilation or water passage and place it in the gas phase containing the chemical substance to be adsorbed, or in the liquid phase. It may be soaked in. The smaller the size such as the above-mentioned powder is, the larger the surface area that can come into contact with the chemical substance to be adsorbed is, which is preferable for efficiently exhibiting the adsorption ability. On the other hand, when it is made into a granular or powder form, a container for containing the adsorbent or a device for holding the adsorbent is required. If it is granular, it is stored in a bag made of fine mesh or non-woven fabric, or if it is powdery, it is mixed with an appropriate adhesive or binder to form a tablet of a predetermined size. You can do it like this. Then, similarly to the above, it may be arranged in the gas phase or immersed in the liquid phase.
【００２６】[0026]
【実施例】以下、効果を確認するために実施した試験例
及びその試験結果に基づきさらに詳細に説明する。[Examples] Hereinafter, more detailed description will be given based on test examples conducted to confirm the effects and the test results.
【００２７】−吸着材の試料調製−
図１に示すように竹材の原材料として、由良川水系（主
として兵庫県内）に生育している孟宗竹を使用した。伐
採した孟宗竹の主幹の部分を長さ１ｍ毎に切断し、さら
にそれを放射方向に縦割りして幅（周長）６〜７ｃｍ程
度に裁断した。これを２５〜３０本程度ずつ結束したも
のを炭化炉内に充填した。充填数は炭化炉の内容積によ
り異なるが、使用した炭化炉では４０〜５０束程度を充
填した。なお、この充填前に燻煙熱により予備乾燥させ
るために、燻煙熱処理窯内に入れてほぼ８０〜１５０℃
の範囲で約４日間程度の間にわたり熱処理した。-Preparation of Adsorbent Sample-As shown in FIG. 1, as a raw material for bamboo, Moso bamboo grown in the Yura River system (mainly in Hyogo prefecture) was used. The main trunk of the felled Menso bamboo was cut into pieces each having a length of 1 m, and the pieces were vertically divided in the radial direction and cut into a width (perimeter) of about 6 to 7 cm. A bundle of about 25 to 30 pieces of this was packed in a carbonization furnace. The filling number varies depending on the internal volume of the carbonization furnace, but in the carbonization furnace used, about 40 to 50 bundles were filled. In addition, in order to pre-dry by smoke heat before this filling, it is put in a smoke heat treatment kiln and the temperature is about 80 to 150 ° C.
In this range, the heat treatment was performed for about 4 days.
【００２８】次に、目標の炭化温度として５００℃、７
００℃及び１０００℃の３種類設定し、各炭化温度毎に
個別にバッチ式にて炭化処理を行った。以下、炭化温度
毎にその炭化処理を説明する目標の炭化温度が５００℃
の場合には、外気温の状態から約２５０℃まで約３時間
かけて昇温させて乾燥工程を行った後に、約２５０℃か
ら５００℃まで約９時間をかけて昇温させ、５００℃に
到達した後に５００℃を維持した状態で約１時間キープ
して炭化工程を行った（図２に実線で示す温度変化を参
照）。そして、加熱を停止させて１００℃まで自然冷却
させる冷却工程を行った。この冷却には約４０時間を要
した。Next, as the target carbonization temperature, 500 ° C. and 7
Three types, 00 ° C. and 1000 ° C., were set, and the carbonization treatment was performed batchwise at each carbonization temperature. Hereinafter, the target carbonization temperature for explaining the carbonization treatment for each carbonization temperature is 500 ° C.
In the case of 1, the temperature is raised from the ambient temperature to about 250 ° C. in about 3 hours and the drying process is performed, and then the temperature is raised from about 250 ° C. to 500 ° C. in about 9 hours to 500 ° C. After reaching the temperature, the carbonization process was carried out by keeping the temperature at 500 ° C. for about 1 hour (see the temperature change indicated by the solid line in FIG. 2). And the cooling process which stops heating and was naturally cooled to 100 degreeC was performed. This cooling required about 40 hours.
【００２９】目標の炭化温度が７００℃の場合（図２に
一点鎖線で示す温度変化を参照）には、外気温の状態か
ら約２５０℃まで約３時間２０分かけて昇温させて乾燥
工程を行った後に、約２５０℃から５００℃まで約１時
間４０分かけて昇温させ、５００℃に到達した後に５０
０℃を維持した状態で１時間キープして炭化工程を行っ
た。次に、５００℃から７００℃まで１５分間かけて昇
温させ、７００℃に到達した後に７００℃を維持した状
態で１時間キープして精錬工程を行った。そして、加熱
を停止させて１００℃まで自然冷却させる冷却工程を行
った。この冷却には上記と同様に約４０時間を要した。When the target carbonization temperature is 700 ° C. (see the temperature change indicated by the one-dot chain line in FIG. 2), the temperature is raised from the ambient temperature to about 250 ° C. over about 3 hours and 20 minutes, and the drying step is performed. Then, the temperature is raised from about 250 ° C to 500 ° C over about 1 hour and 40 minutes, and after reaching 500 ° C, 50
The carbonization process was carried out by keeping it at 0 ° C. for 1 hour. Next, the temperature was raised from 500 ° C. to 700 ° C. over 15 minutes, and after reaching 700 ° C., the temperature was maintained at 700 ° C. and kept for 1 hour to perform a refining process. And the cooling process which stops heating and was naturally cooled to 100 degreeC was performed. This cooling required about 40 hours as above.
【００３０】目標の炭化温度が１０００℃の場合（図２
に点線で示す温度変化を参照）には、外気温の状態から
約２５０℃まで約３時間３０分かけて昇温させて乾燥工
程を行った後に、約２５０℃から７００℃まで約３時間
３０分かけて昇温させ、７００℃に到達した後に７００
℃を維持した状態で１時間キープして炭化工程を行っ
た。次に、７００℃から１０００℃まで約２時間かけて
昇温させ、１０００℃に到達した後に１０００℃を維持
した状態で４０分間キープして精錬工程を行った。そし
て、加熱を停止させて１００℃まで自然冷却させる冷却
工程を行った。この冷却には上記と同様に約４０時間を
要した。When the target carbonization temperature is 1000 ° C. (see FIG. 2)
(See the temperature change indicated by the dotted line in Fig. 2), the temperature is raised from the ambient temperature to about 250 ° C over about 3 hours 30 minutes, and the drying process is performed. The temperature is raised over 700 minutes, and after reaching 700 ° C, 700
The carbonization process was performed by keeping the temperature of 1 ° C for 1 hour. Next, the temperature was raised from 700 ° C. to 1000 ° C. over about 2 hours, and after reaching 1000 ° C., the temperature was maintained at 1000 ° C. and kept for 40 minutes to perform a refining process. And the cooling process which stops heating and was naturally cooled to 100 degreeC was performed. This cooling required about 40 hours as above.
【００３１】以上の温度制御は上記の結束した状態の竹
材束の上下方向中間位置において外から内部まで差し込
んだ熱電対により炭化処理過程にある竹材の実際の温度
を正確に検出しながら行った。The above temperature control was carried out while accurately detecting the actual temperature of the bamboo material in the carbonization process by the thermocouple inserted from the outside to the inside at the intermediate position in the vertical direction of the above-mentioned bundle of bamboo materials.
【００３２】以上で５００℃、７００℃及び１０００℃
の各炭化温度で炭化処理した３種類の竹炭を得た後、こ
の３種類の竹炭をそれぞれ同サイズの粉末状に破砕し
て、吸着材としての３種類の吸着試料を得た。Above, 500 ° C, 700 ° C and 1000 ° C
After obtaining 3 types of bamboo charcoal carbonized at each carbonization temperature, the 3 types of bamboo charcoal were crushed into powders of the same size to obtain 3 types of adsorption samples as adsorbents.
【００３３】−吸着試験方法−
吸着対象の化学物質としてアンモニア、ホルムアルデヒ
ド、トルエン、ベンゼン及び１７β−エストラジオール
を用意し、これら５種類の化学物質についてそれぞれ上
記の３種類の吸着試料を用いた吸着試験を個別に実施し
た。この内、アンモニア、ホルムアルデヒド、トルエン
及びベンゼンはガスを使用した。以下、アンモニア、ホ
ルムアルデヒド、トルエン及びベンゼン（以下「対象ガ
ス」ともいう）と、１７β−エストラジオールとに分け
て説明する。-Adsorption test method-Ammonia, formaldehyde, toluene, benzene and 17β-estradiol were prepared as the chemical substances to be adsorbed, and an adsorption test using the above-mentioned three types of adsorption samples was performed for each of these five types of chemical substances. It was carried out individually. Of these, gases were used for ammonia, formaldehyde, toluene and benzene. Hereinafter, ammonia, formaldehyde, toluene, and benzene (hereinafter, also referred to as “target gas”) and 17β-estradiol will be described separately.
【００３４】（上記対象ガスの場合）上記各対象ガスに
ついての吸着試験は、５Ｌのテドラーバッグ（ジーエル
サイエンス株式会社製）を用い、このテドラーバッグ内
で行った。(In the case of the above target gas) The adsorption test for each of the above target gases was carried out in this Tedlar bag using a 5 L Tedlar bag (manufactured by GL Sciences Inc.).
【００３５】具体的には、まず、上記対象ガス毎に所定
量の上記各吸着試料を個別にテドラーバッグ内に入れ、
各吸着試料を入れた部分と他の部分とに分けて遮断する
ように密封クリップにより上記テドラーバッグを仕切
る。次に、そのテドラーバッグ内の吸着試料が入れられ
た部分とは異なる部分に窒素を充填し、次いで各対象ガ
スを所定濃度になるようにガスタイト式のシリンジを用
いて注入し、２０℃の恒温槽中に静置する。そして、注
入した対象ガスの濃度が安定したら、上記密封クリップ
を開放してテドラーバッグ内を連通させて対象ガスと試
料とを接触させる。この時点を０時間経過時点として対
象ガスの濃度を測定し、以後、１時間、３時間、５時
間、８時間及び２４時間の各経過時点毎にテドラーバッ
グ内の対象ガスの濃度を測定した。Specifically, first, a predetermined amount of each adsorbed sample for each of the target gases is individually put in a Tedlar bag,
The Tedlar bag is partitioned by a sealing clip so that the portion containing each adsorbed sample and the other portion are divided and blocked. Next, nitrogen is filled in a part different from the part in which the adsorption sample is put in the Tedlar bag, and then each target gas is injected using a gas-tight syringe so as to have a predetermined concentration, and a constant temperature bath at 20 ° C. Place it inside. Then, when the concentration of the injected target gas is stable, the sealing clip is opened to allow the inside of the Tedlar bag to communicate with each other and bring the target gas into contact with the sample. The concentration of the target gas was measured with this time point as 0 hour point, and thereafter, the concentration of the target gas in the Tedlar bag was measured at each time point of 1 hour, 3 hours, 5 hours, 8 hours, and 24 hours.
【００３６】上記のテドラーバッグ内に入れる吸着試料
の量としては、アンモニア及びホルムアルデヒドについ
ては上記各吸着試料を０．５ｇずつ、トルエン及びベン
ゼンについては上記各吸着試料を０．０５ｇずつとし
た。The amount of the adsorbed sample to be put in the Tedlar bag was 0.5 g for each of the adsorbed samples for ammonia and formaldehyde, and 0.05 g for each of the adsorbed samples for toluene and benzene.
【００３７】また、上記の濃度測定方法としては対象ガ
ス毎に次の方法を採用した。すなわち、ホルムアルデヒ
ドの濃度についてはFormaldemeter400（JMS社製）を用
いて測定し、アンモニアの濃度については北川式検知器
AP-1（光明理化学工業製）と北川式検知器アンモニア10
5SC（光明理化学工業製）とを用いて測定した。また、
ベンゼン及びトルエンの各濃度は、炎光光度検出器（FI
D）を装備したガスクロマトグラフGC-8A（島津製作所
製）を用いて測定した。ガスクロマトグラフは液相がPo
lyethlyeneglycol ２０Mで担体がChromosorb W（６０〜
８０mesh，AW-DMCS）の充填剤を充填したステンレスカ
ラムを用い、カラム温度１００℃、気化室温度１５０℃
の条件で窒素をキャリアガスにして検量線法により測定
した。As the above-mentioned concentration measuring method, the following method was adopted for each target gas. That is, the concentration of formaldehyde was measured using Formaldemeter 400 (manufactured by JMS), and the concentration of ammonia was detected by the Kitagawa detector.
AP-1 (manufactured by Komei Rikagaku) and Kitagawa detector ammonia 10
It was measured using 5SC (manufactured by Komei Rikagaku Kogyo). Also,
Each concentration of benzene and toluene was measured by flame photometric detector (FI
It was measured using a gas chromatograph GC-8A (manufactured by Shimadzu Corporation) equipped with D). The liquid phase of the gas chromatograph is Po
lyethlyeneglycol 20M with Chromosorb W (60 ~
80mesh, AW-DMCS) using a stainless steel column packed with a column temperature of 100 ℃, vaporization chamber temperature of 150 ℃
Under the conditions described above, nitrogen was used as a carrier gas and measurement was performed by a calibration curve method.
【００３８】（１７β−エストラジオールの場合）上記
各吸着試料毎に約０．１ｇを３００ｍＬの共栓付き三角
フラスコに入れ、これに１ｐｐｍの濃度の１７β−エス
トラジオール溶液を２００ｍＬを入れる。この時点を０
時間経過時点としてサンプリングし、以後、時々撹拌し
ながら１時間、３時間、５時間、８時間及び２４時間の
各経過時点毎にサンプリングした。(In the case of 17β-estradiol) About 0.1 g of each adsorbed sample was placed in a 300 mL Erlenmeyer flask with a stopper, and 200 mL of a 17 ppm-estradiol solution having a concentration of 1 ppm was placed therein. 0 at this time
Sampling was performed as the time elapsed, and thereafter, sampling was performed at each time of 1 hour, 3 hours, 5 hours, 8 hours, and 24 hours with occasional stirring.
【００３９】なお、上記の１ｐｐｍの１７β−エストラ
ジオール溶液は、１０ｍｇの１７β−エストラジオール
を１００ｍＬのメタノールに溶解させて標準原液とし、
この標準原液を精製水により希釈して調製した。The above 1 ppm 17β-estradiol solution was prepared by dissolving 10 mg of 17β-estradiol in 100 mL of methanol to prepare a standard stock solution.
This standard stock solution was prepared by diluting it with purified water.
【００４０】上記でサンプリングした試料の１７β−エ
ストラジオールの濃度測定は高速液体クロマトグラフィ
ーを用いて行った。この高速液体クロマトグラフィー
は、ポンプとしてCCPM（東ソー製）、ポンプコントロー
ラとしてPX-8010（東ソー製）、ＵＶ検出器としてUV-80
00（東ソー製）、インジェクター7125（レオダン製）及
びクロマトパックC-R6A（島津製作所製）を装備したも
のである。そして、移動層としてメタノール：水を６：
４にしたものを１．０ｍＬ／ｍｉｎで流し、サンプリン
グ試料の注入量を５０μＬとし、検出器の波長を２８０
ｎｍとして検量線法により定量した。The concentration of 17β-estradiol in the sample sampled above was measured by high performance liquid chromatography. This high-performance liquid chromatography uses CCPM (Tosoh) as a pump, PX-8010 (Tosoh) as a pump controller, and UV-80 as a UV detector.
It is equipped with 00 (made by Tosoh), injector 7125 (made by Leodan) and Chromatopack C-R6A (made by Shimadzu). Then, as a moving layer, methanol: water is 6:
Flow rate of 1.0 mL / min, the injection amount of the sampling sample was 50 μL, and the wavelength of the detector was 280
nm was quantified by a calibration curve method.
【００４１】−試験結果−
以上の吸着試験の結果について、５００℃、７００℃及
び１０００℃の各炭化温度で炭化処理して得た３種類の
吸着試料毎に、４種類の上記対象ガス及び１７β−エス
トラジオールの各時間経過時点毎の濃度値を図３に示
す。加えて、図３の各濃度値の変化を横軸に時間（h
r）、縦軸に濃度（ppm）とするグラフにより表したもの
として、アンモニア濃度について図４に、ホルムアルデ
ヒド濃度について図５に、ベンゼン濃度について図６
に、トルエン濃度について図７に、１７β−エストラジ
オール濃度について図８にそれぞれ示す。図４〜図８に
おいては、５００℃で炭化処理した吸着試料の場合を実
線と黒丸印とで示し、７００℃で炭化処理した吸着試料
の場合を一点鎖線と白抜き丸印とで示し、１０００℃で
炭化処理した吸着試料の場合を点線と白抜き三角印とで
示している。-Test Results-For the results of the above adsorption test, four kinds of target gases and 17β were prepared for each of the three kinds of adsorption samples obtained by the carbonization treatment at the respective carbonization temperatures of 500 ° C, 700 ° C and 1000 ° C. -The concentration value of estradiol at each elapsed time point is shown in FIG. In addition, the change in each concentration value in FIG.
r), and the vertical axis shows the concentration (ppm). As a result, the ammonia concentration is shown in FIG. 4, the formaldehyde concentration is shown in FIG. 5, and the benzene concentration is shown in FIG.
7 shows the toluene concentration and FIG. 8 shows the 17β-estradiol concentration. 4 to 8, the case of the adsorption sample carbonized at 500 ° C. is indicated by a solid line and a black circle, and the case of the adsorption sample carbonized at 700 ° C. is indicated by a one-dot chain line and a white circle. The case of the adsorption sample carbonized at ℃ is shown by a dotted line and a white triangle.
【００４２】（アンモニアの場合）図４（併せて図３）
を見ると、炭化温度が５００℃の吸着試料が他の吸着試
料と比べずば抜けたアンモニア吸着能を示している。こ
の５００℃の吸着試料ではほぼ１００％と超高率の吸着
能（捕集能力）を示し、しかも短時間（１時間）で既に
９５％の吸着能を示し３時間で１００％（測定上の未検
出状態）の吸着能を発揮している。これに対し、炭化温
度が７００℃及び１０００℃の両吸着試料ではほぼ同じ
吸着能を示し、４０％〜６０％の範囲での吸着能に止ま
っている。従って、アンモニアに対しては炭化温度が低
い範囲において高い吸着能を発揮すると考えられる。(In the case of ammonia) FIG. 4 (also FIG. 3)
The adsorption sample having a carbonization temperature of 500 ° C. shows outstanding ammonia adsorption capacity as compared with other adsorption samples. The adsorbed sample at 500 ° C. exhibits an adsorbing capacity (capturing capacity) as high as almost 100%, and has already adsorbed 95% in a short time (1 hour) and 100% in 3 hours. It exhibits the adsorption capacity (undetected state). On the other hand, both the adsorption samples having carbonization temperatures of 700 ° C. and 1000 ° C. show almost the same adsorption ability, and the adsorption ability remains in the range of 40% to 60%. Therefore, it is considered that high adsorption capacity for ammonia is exhibited in the low carbonization temperature range.
【００４３】（ホルムアルデヒドの場合）図５（併せて
図３）を見ると、５００℃、７００℃及び１０００℃の
３種類の炭化温度の各吸着試料は共にほぼ同様のホルム
アルデヒド吸着能を示し、共にほぼ８０％以上の高い吸
着能を短時間（１時間）で発揮している。なお、僅かで
はあるが１０００℃の吸着試料よりも５００℃及び７０
０℃の各吸着試料の方が、より高い吸着能を示した。従
って、ホルムアルデヒドの吸着能に関しては、各吸着試
料共に高い吸着能を発揮し、炭化温度の高低如何に対し
依存性はあまりないと考えられる。(In the case of formaldehyde) Looking at FIG. 5 (and also FIG. 3), each of the adsorption samples at three carbonization temperatures of 500 ° C., 700 ° C. and 1000 ° C. shows almost the same formaldehyde adsorption capacity. It exhibits a high adsorption capacity of approximately 80% or more in a short time (1 hour). It should be noted that although slightly, it was 500 ° C and 70% less than the adsorption sample at 1000 ° C.
Each of the adsorbed samples at 0 ° C. showed higher adsorption capacity. Therefore, regarding the adsorbability of formaldehyde, it is considered that each adsorbed sample exhibits a high adsorbability and has little dependence on whether the carbonization temperature is high or low.
【００４４】（ベンゼンの場合）図６（併せて図３）を
見ると、炭化温度が１０００℃の吸着試料が他の吸着試
料に比べずば抜けたベンゼン吸着能（９５％以上）を短
時間（１時間）で発揮し、他の吸着試料では７００℃、
５００℃の順で１０００℃の吸着試料よりも劣るものと
なっている。それでも、炭化温度が７００℃の吸着試料
であっても２４時間経過時点では７０％程度とかなり高
い吸着能を示し、５００℃の吸着試料であっても２４時
間経過時点では３４％程度の吸着能を示している。以上
より、ベンゼンの吸着能に関しては、炭化温度が高い
程、高い吸着能を発揮するものと考えられる。(In the case of benzene) As shown in FIG. 6 (and also FIG. 3), the adsorption capacity of the adsorption sample having a carbonization temperature of 1000.degree. Time), 700 ° C for other adsorbed samples,
The order of 500 ° C. is inferior to that of the adsorption sample at 1000 ° C. Even so, even an adsorption sample with a carbonization temperature of 700 ° C. shows a considerably high adsorption capacity of about 70% after 24 hours, and an adsorption sample of 500 ° C. shows an adsorption capacity of about 34% after 24 hours. Is shown. From the above, it is considered that the higher the carbonization temperature, the higher the adsorption capacity of benzene.
【００４５】（トルエンの場合）図７（併せて図３）を
見ると、傾向としては上記のベンゼンの場合と同様傾向
を示し、トルエン吸着能に関しても炭化温度が高い程、
高い吸着能を発揮するものと考えられる。但し、その吸
着能の程度はベンゼンのそれを上回り、炭化温度が１０
００℃の吸着試料では短時間（１時間）でほぼ１００％
と超高率のトルエン吸着能を発揮している。他の７００
℃、５００℃の吸着試料では１０００℃の吸着試料より
も劣るものの、炭化温度が７００℃の吸着試料では２４
時間経過時点で６０％以上と比較的高い吸着能を示し、
５００℃の吸着試料では２４時間経過時点で２５％以上
程度の吸着能を示している。なお、キシレン、ノネナー
ル又はインドールに対する吸着能についても、上記のト
ルエン又はベンゼンの場合と同様の傾向を示し、１００
０℃の吸着試料が超高率の吸着能を発揮し他の７００
℃、５００℃の吸着試料でも１０００℃の吸着試料より
も劣るもののかなり高い吸着能を発揮するものと考えら
れる。(Toluene) As shown in FIG. 7 (together with FIG. 3), the tendency is similar to that of the above-mentioned case of benzene.
It is considered to exhibit high adsorption capacity. However, its adsorption capacity is higher than that of benzene, and the carbonization temperature is 10
Almost 100% in a short time (1 hour) with an adsorption sample at 00 ° C
And it has an extremely high rate of toluene adsorption. The other 700
The adsorption sample at ℃ and 500 ℃ is inferior to the adsorption sample at 1000 ℃, but it is 24
It shows a relatively high adsorption capacity of 60% or more at the time passage,
The adsorption sample at 500 ° C. exhibits an adsorption capacity of about 25% or more after 24 hours. The adsorption capacity for xylene, nonenal or indole shows the same tendency as in the case of toluene or benzene, and is 100% or less.
The adsorption sample at 0 ℃ exerts an extremely high adsorption capacity, and the other 700
It is considered that the adsorbed samples at ℃ and 500 ℃ also exhibit a considerably high adsorbing ability, though inferior to the adsorbed sample at 1000 ℃.
【００４６】（１７β−エストラジオールの場合）図８
（併せて図３）を見ると、傾向としては上記のベンゼン
又はトルエンの場合と同様傾向を示し、１７β−エスト
ラジオールの吸着能に関しては炭化温度が高い程、高い
吸着能を発揮するものと考えられる。そして、その吸着
能の程度もトルエンの場合とほぼ同様ではあり、炭化温
度が１０００℃の吸着試料は短時間（１時間）で１００
％と超高率の吸着能を発揮した。他の７００℃、５００
℃の吸着試料では１０００℃の吸着試料よりも劣るもの
の、炭化温度が７００℃の吸着試料では３時間経過時点
で７０％以上とかなり高い吸着能を示し、５００℃の吸
着試料でも３時間経過時点で５０％以上の良好な吸着能
を示している。(For 17β-estradiol) FIG. 8
Looking at (combined with FIG. 3), the tendency is similar to the case of benzene or toluene described above, and it is considered that the higher the carbonization temperature, the higher the adsorption capacity of 17β-estradiol. . The degree of adsorption capacity is almost the same as that of toluene, and the adsorption sample having a carbonization temperature of 1000 ° C. is 100 times in a short time (1 hour).
It exhibited a very high adsorption capacity of 100%. Other 700 ℃, 500
Although the adsorption sample at ℃ was inferior to the adsorption sample at 1000 ° C, the adsorption sample at the carbonization temperature of 700 ° C showed a considerably high adsorption capacity of 70% or more at the time of 3 hours, and the adsorption sample at 500 ° C was also at the time of 3 hours. Shows a good adsorption capacity of 50% or more.
【００４７】−電子スピン共鳴スペクトル（ＥＳＲ）測
定−
竹炭の吸着能について炭化温度の高低如何に依存性があ
ることの参考に供するために、各種の炭化温度（２００
℃、３００℃、４００℃、５００℃、７００℃、及び、
１０００℃）で炭化処理した竹炭（炭化物）を試料とし
て電子スピン共鳴スペクトル測定を実施した。-Electron Spin Resonance Spectra (ESR) Measurement-In order to refer to the fact that the adsorption capacity of bamboo charcoal depends on whether the carbonization temperature is high or low, various carbonization temperatures (200
℃, 300 ℃, 400 ℃, 500 ℃, 700 ℃, and
Electron spin resonance spectrum measurement was carried out using bamboo charcoal (carbide) carbonized at 1000 ° C. as a sample.
【００４８】測定は、電子スピン共鳴装置JES-TE200
（日本電子製）を用い、５ｍｍ径のＥＳＲ試料管に上記
各試料を入れ、２３℃でＥＳＲスペクトルを測定した。
この測定結果を図９に示す。An electron spin resonance device JES-TE200 is used for the measurement.
(Manufactured by JEOL Ltd.), each sample was put in an ESR sample tube having a diameter of 5 mm, and an ESR spectrum was measured at 23 ° C.
The measurement result is shown in FIG.
【００４９】図９の結果では、２００℃〜７００℃の試
料においてＥＳＲ活性なラジカル種が検出され、１００
０℃の試料ではラジカル種は検出されなかった。また、
ラジカル種の検出は５００℃の試料において最も多く、
５００℃から温度が高低両側に離れる程減少した。In the results of FIG. 9, ESR active radical species were detected in the sample at 200 ° C. to 700 ° C.
No radical species were detected in the 0 ° C. sample. Also,
The detection of radical species is the most frequent in the sample at 500 ℃,
The temperature decreased from 500 ° C. as the temperature became higher and lower.
【図１】３種類の吸着試料の炭化処理を説明した表であ
る。FIG. 1 is a table illustrating carbonization treatment of three types of adsorption samples.
【図２】３種類の吸着試料の炭化処理における加熱温度
の変化を示す図である。FIG. 2 is a diagram showing changes in heating temperature during carbonization of three types of adsorbed samples.
【図３】濃度変化値について全試験結果を示す表であ
る。FIG. 3 is a table showing the results of all tests for concentration change values.
【図４】アンモニア濃度変化を示す図である。FIG. 4 is a diagram showing changes in ammonia concentration.
【図５】ホルムアルデヒド濃度変化を示す図である。FIG. 5 is a diagram showing changes in formaldehyde concentration.
【図６】ベンゼン濃度変化を示す図である。FIG. 6 is a diagram showing changes in benzene concentration.
【図７】トルエン濃度変化を示す図である。FIG. 7 is a diagram showing changes in toluene concentration.
【図８】１７β−エストラジオール濃度変化を示す図で
ある。FIG. 8 is a diagram showing changes in 17β-estradiol concentration.
【図９】電子スピン共鳴スペクトル図である。FIG. 9 is an electron spin resonance spectrum diagram.
───────────────────────────────────────────────────── フロントページの続き (71)出願人 594188191 鳥羽 曙 福井県小浜市水取４の10の32 小浜竹炭生 産組合内 (72)発明者 及川 紀久雄 新潟県新潟市真砂３丁目15−１ (72)発明者 鳥羽 曙 福井県小浜市水取４丁目10−32 小浜竹炭 生産組合内 (72)発明者 石原 茂久 京都市長岡京市天神３丁目23番12号 (72)発明者 山根 健司 兵庫県神戸市西区糀台３丁目18−７ Ｆターム(参考） 4C080 AA05 BB04 CC02 CC08 HH05 JJ03 KK08 LL02 MM05 QQ03 4G046 HA01 HC16 4G066 AA04B AC07A CA29 CA51 CA52 CA56 DA03 FA23 FA34 ─────────────────────────────────────────────────── ─── Continued front page (71) Applicant 594188191 Toba Akebono 32 10-10 Obama Bamboo Charcoal, 4-10 Mizutori, Obama City, Fukui Prefecture Within the trade union (72) Inventor Kikuo Oikawa 3-15-1, Masago, Niigata City, Niigata Prefecture (72) Inventor Akiba Toba 4-10-32 Mizutori, Obama City, Fukui Prefecture Within the production union (72) Inventor Shigehisa Ishihara 3-23-12 Tenjin, Nagaokakyo, Kyoto (72) Inventor Kenji Yamane 3-18-7 Kojidai, Nishi-ku, Kobe City, Hyogo Prefecture F-term (reference) 4C080 AA05 BB04 CC02 CC08 HH05 JJ03 KK08 LL02 MM05 QQ03 4G046 HA01 HC16 4G066 AA04B AC07A CA29 CA51 CA52 CA56 DA03 FA23 FA34
Claims (6)
ン、トルエン、及び、エストラジオールの内のいずれか
一種又は二種以上の組み合わせからなる特定化学物質を
捕集するための捕集方法であって、 竹材を上記特定化学物質に応じた特定炭化温度で炭化さ
せることにより吸着材として用いる竹炭を用意し、この
吸着材を上記特定化学物質と接触させ、上記特定化学物
質を上記吸着材に吸着させることにより捕集するように
することを特徴とする特定化学物質の捕集方法。1. A trapping method for trapping a specific chemical substance consisting of any one or a combination of two or more of ammonia, formaldehyde, benzene, toluene, and estradiol, wherein the bamboo material is specified as above. Bamboo charcoal used as an adsorbent is prepared by carbonizing at a specific carbonization temperature according to the chemical substance, and the adsorbent is brought into contact with the specific chemical substance, and the specific chemical substance is adsorbed on the adsorbent to be collected. A method for collecting a specific chemical substance, characterized by:
ン、トルエン、及び、エストラジオールの内のいずれか
一種又は二種以上の組み合わせから成る特定化学物質を
捕集するために用いる吸着材であって、 竹材を上記特定化学物質に応じた特定炭化温度で炭化さ
せることにより得られる竹炭を用いてなることを特徴と
する吸着材。2. An adsorbent used for capturing a specific chemical substance consisting of one or a combination of two or more of ammonia, formaldehyde, benzene, toluene, and estradiol, wherein the bamboo material is specified as above. An adsorbent characterized by using bamboo charcoal obtained by carbonizing at a specific carbonization temperature according to a chemical substance.
って、 竹材を４００℃から６００℃の範囲の炭化温度で炭化さ
せることにより得られる竹炭を用いてなることを特徴と
する吸着材。3. An adsorbent for trapping ammonia, which is made of bamboo charcoal obtained by carbonizing bamboo at a carbonization temperature in the range of 400 ° C. to 600 ° C.
材であって、 竹材を４００℃から１１００℃の範囲の炭化温度で炭化
させることにより得られる竹炭を用いてなることを特徴
とする吸着材。4. An adsorbent for collecting formaldehyde, which is made of bamboo charcoal obtained by carbonizing bamboo at a carbonization temperature in the range of 400 ° C. to 1100 ° C.
吸着材であって、 竹材を７００℃から１１００℃の範囲の炭化温度で炭化
させることにより得られる竹炭を用いてなることを特徴
とする吸着材。5. An adsorbent for collecting toluene or benzene, which is characterized by using bamboo charcoal obtained by carbonizing bamboo at a carbonization temperature in the range of 700 ° C. to 1100 ° C. Material.
材であって、 竹材を４００℃から１１００℃の範囲の炭化温度で炭化
させることにより得られる竹炭を用いてなることを特徴
とする吸着材。6. An adsorbent for collecting estradiol, which is made of bamboo charcoal obtained by carbonizing bamboo at a carbonization temperature in the range of 400 ° C. to 1100 ° C.
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| JP2001278836A JP2003080062A (en) | 2001-09-13 | 2001-09-13 | Method for capturing specific chemical substance and adsorbent used for the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001278836A JP2003080062A (en) | 2001-09-13 | 2001-09-13 | Method for capturing specific chemical substance and adsorbent used for the same |
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| JP2003080062A true JP2003080062A (en) | 2003-03-18 |
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| US7309404B2 (en) | 2003-02-27 | 2007-12-18 | Fuji Xerox Co., Ltd. | Manufacturing apparatus and method for carbon nanotube |
| JP2005205123A (en) * | 2004-01-21 | 2005-08-04 | Ito Tatamiten:Kk | Char of discarded tatami (rush mat), discarded bamboo or the like and usage thereof |
| JP2009072786A (en) * | 2008-12-19 | 2009-04-09 | Chikuno Life:Kk | Chemical substance adsorbing material using bamboo coal |
| CN102989433A (en) * | 2012-12-11 | 2013-03-27 | 浙江农林大学 | Production method of bamboo powder-amino acid type adsorption material |
| JP2017029030A (en) * | 2015-07-30 | 2017-02-09 | 田山 ▲吉▼基 | Method for adjusting tar component to be 1 milligram or less in filter of filter-attached cigarette |
| JP6041415B1 (en) * | 2016-07-04 | 2016-12-07 | 田山 ▲吉▼基 | A method of reducing the tar component during suction to 1 mg or less in a filter of cigarette with filter. |
| WO2018008465A1 (en) * | 2016-07-04 | 2018-01-11 | 吉基 田山 | Method for reducing amount of tar components to be 1 mg or less in filter of filter cigarette being smoking |
| JP2020162896A (en) * | 2019-03-29 | 2020-10-08 | 小坂建設株式会社 | Bamboo charcoal and method for manufacturing the same |
| JP7380986B2 (en) | 2019-03-29 | 2023-11-15 | 群馬県 | Bamboo charcoal and bamboo charcoal manufacturing method |
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