JPH11342316A - Method of preventing environmental pollution and product having function of preventing environmental pollution - Google Patents
Method of preventing environmental pollution and product having function of preventing environmental pollutionInfo
- Publication number
- JPH11342316A JPH11342316A JP11117698A JP11117698A JPH11342316A JP H11342316 A JPH11342316 A JP H11342316A JP 11117698 A JP11117698 A JP 11117698A JP 11117698 A JP11117698 A JP 11117698A JP H11342316 A JPH11342316 A JP H11342316A
- Authority
- JP
- Japan
- Prior art keywords
- photocatalyst
- environmental pollution
- environment
- product
- function
- 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
- 238000003912 environmental pollution Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000011941 photocatalyst Substances 0.000 claims abstract description 48
- 239000000126 substance Substances 0.000 claims description 36
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 claims description 13
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 11
- 239000003463 adsorbent Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 11
- 239000000575 pesticide Substances 0.000 claims description 11
- 238000000354 decomposition reaction Methods 0.000 claims description 10
- 230000001699 photocatalysis Effects 0.000 claims description 8
- 239000002917 insecticide Substances 0.000 claims description 7
- 239000004094 surface-active agent Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 150000002013 dioxins Chemical group 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 16
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 16
- 239000000047 product Substances 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 4
- 230000003054 hormonal effect Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000012773 agricultural material Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229940088597 hormone Drugs 0.000 description 2
- 239000005556 hormone Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001850 reproductive effect Effects 0.000 description 2
- NBFMTHWVRBOVPE-UHFFFAOYSA-N 2,7-dichlorodibenzo-p-dioxin Chemical compound ClC1=CC=C2OC3=CC(Cl)=CC=C3OC2=C1 NBFMTHWVRBOVPE-UHFFFAOYSA-N 0.000 description 1
- 241000270722 Crocodylidae Species 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- MXWJVTOOROXGIU-UHFFFAOYSA-N atrazine Chemical compound CCNC1=NC(Cl)=NC(NC(C)C)=N1 MXWJVTOOROXGIU-UHFFFAOYSA-N 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 231100000507 endocrine disrupting Toxicity 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 210000004392 genitalia Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
Landscapes
- Catalysts (AREA)
- Processing Of Solid Wastes (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、有害物質を発生さ
せ環境中に拡散する恐れのある成分を含む製品による環
境汚染を防止する方法及び環境汚染を防止する機能を有
する製品に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing environmental pollution by products containing components that generate harmful substances and may diffuse into the environment, and a product having a function of preventing environmental pollution.
【0002】[0002]
【従来の技術】人体に有害な物質の環境汚染が深刻化し
ており、近年は特にごく微量でも生態の様々な作用に影
響を与えるホルモン様化学物質(内分泌攪乱物質)の環
境中への拡散が問題になっている。本来ホルモンは生態
内で分泌される化学物質であるが、一部の化学物質がホ
ルモンと似た作用をし鳥類、哺乳類や貝類などの野生生
物の生殖異常が引き起こされることが疑われている。こ
のような例として調査されているのが、巻き貝の一種イ
ボニシに見られる生殖器の雄性化や、カモメの雄が形態
的にも行動的にも雌化する現象、またフロリダのアポプ
カ湖に生息するワニの生殖器が小さくなったことも農薬
の汚染が原因と報告されている。ヒトに対する影響につ
いても、精子数の減少(1938年から1990年にか
けて半減しているという報告がある。)や奇形の増加が
近年顕著に認められており、ホルモン様化学物質との関
係が疑われている。2. Description of the Related Art Environmental pollution of substances harmful to the human body has become serious, and in recent years, the diffusion of hormone-like chemical substances (endocrine disrupting substances) into the environment, which affects various functions of ecology even in a very small amount, has been increasing. Is in question. Hormones are naturally secreted chemicals in the ecology, but it is suspected that some chemicals act like hormones and cause reproductive abnormalities in birds, mammals, and shellfish. Examples of such studies are the genitalization of the genitalia found in the snail, Ibonyshi, the morphological and behavioral femaleization of male seagulls, and the inhabitants of Lake Apopka, Florida Crocodiles' reproductive organs have also been reported to be due to pesticide contamination. Regarding effects on humans, a decrease in sperm count (reported to be halved from 1938 to 1990) and an increase in malformations have been remarkably observed in recent years, suggesting that the relationship with hormone-like chemicals is suspected. ing.
【0003】現在ホルモン様化学物質として疑われてい
るのは、アトラジン、DDT、ジコホル等の農薬や、樹
脂に用いられるフェノール類、更には廃棄物の処理過程
で排出されるダイオキシン等があげられる。特に塩化ビ
ニル等塩素を含む樹脂の焼却の際に発生するダイオキシ
ンは、発癌性等の毒性も高く塩素が混入した焼却物を燃
焼させる際には必ず発生することから根本的な対策が困
難で近年大変問題になっている。ダイオキシンは焼却炉
から排出される排気ガスや、焼却後に残留する灰(焼却
灰)に残留する。焼却灰は最終処分場に埋め立てられる
が、この処分場の上空は飛散した焼却灰によるダイオキ
シン汚染が検出されている。At present, suspected hormone-like chemicals include pesticides such as atrazine, DDT, and dicophor, phenols used in resins, and dioxins discharged during the processing of wastes. In particular, dioxin generated during the incineration of resins containing chlorine such as vinyl chloride is highly toxic, such as carcinogenic, and is always generated when burning incinerated materials containing chlorine. It is very problematic. Dioxin remains in the exhaust gas discharged from the incinerator and in the ash (incineration ash) remaining after incineration. The incineration ash is landfilled at the final disposal site, but dioxin contamination due to the scattered incineration ash has been detected above this disposal site.
【0004】これらの環境汚染物質は、比較的安定で環
境中での微生物分解が期待できないものも多く、いった
ん環境中に排出されると除去は困難である。たとえばダ
イオキシンは熱や酸、アルカリに対して比較的安定で、
水にも溶けにくい性質があり、残留性が高い。ダイオキ
シンの発生は廃棄物焼却過程で生じるので、ダイオキシ
ンの吸着フィルターを焼却炉に付設するなどの工夫で低
減の可能性があるが、農業資材など山間部で野焼きされ
る製品も多く対策は完全ではなかった。ましてや農薬や
殺虫剤などの環境中に散布される製品についてはまった
く対策がないといってよかった。[0004] Many of these environmental pollutants are relatively stable and cannot be expected to degrade microorganisms in the environment, and once discharged into the environment, it is difficult to remove them. For example, dioxin is relatively stable to heat, acids, and alkalis,
It has low water solubility and high persistence. Since dioxin is generated during the waste incineration process, there is a possibility that dioxin can be reduced by devising a dioxin adsorption filter in the incinerator.However, many products, such as agricultural materials, are burned in mountainous areas such as agricultural materials. Did not. Even better, there are no countermeasures for products spread in the environment, such as pesticides and pesticides.
【0005】[0005]
【発明が解決しようとする課題】本発明は、有害物質を
発生させ環境中に拡散する恐れのある成分を含む製品に
よる環境汚染を防止する方法及び環境汚染を防止する機
能を有する製品を提供することを課題とする。SUMMARY OF THE INVENTION The present invention provides a method for preventing environmental pollution by products containing components that generate harmful substances and may diffuse into the environment, and a product having a function for preventing environmental pollution. That is the task.
【0006】[0006]
【課題を解決するための手段】本発明者らはこれらの環
境中に拡散する恐れのある有害物質を、極力拡散する以
前に吸着力のある光触媒に吸着させ、これを徐々に太陽
光等の光を照射することによって分解無毒化することを
考案した。たとえば最終処分場の焼却灰の上に活性炭な
どの吸着剤と酸化チタンなどの光触媒を散布することに
よってダイオキシンは分解され、汚染を防止することが
できる。Means for Solving the Problems The present inventors adsorb harmful substances which may be diffused into the environment to a photocatalyst having an adsorbing power before diffusing them as much as possible, and gradually adsorb the harmful substances such as sunlight. It was devised to decompose and detoxify by irradiating light. For example, by spraying an adsorbent such as activated carbon and a photocatalyst such as titanium oxide on the incineration ash at a final disposal site, dioxin is decomposed and contamination can be prevented.
【0007】本発明者らは、さらに有害物質の吸着能力
を有する光触媒を予め製品に混入しておくことで、製品
が環境に拡散した後にも有害物質を光触媒の近傍に吸着
保持できれば、太陽光をはじめとする種々の光源からの
光を受けて、これを徐々に光触媒分解できるので、環境
中に残留することがなく、環境汚染を防止することがで
きることを考察した。The present inventors further incorporate a photocatalyst capable of adsorbing harmful substances into a product in advance, so that if the harmful substance can be adsorbed and held near the photocatalyst even after the product has diffused into the environment, the sunlight In addition, it was considered that light from various light sources, such as, can be gradually decomposed by photocatalyst, so that it does not remain in the environment, and that environmental pollution can be prevented.
【0008】[0008]
【発明の実施の形態】本発明で使用可能な光触媒は、酸
化チタンを始め酸化亜鉛、酸化すず、チタン酸ストロン
チウム、酸化タングステン、酸化ビスマス、酸化鉄等が
あるが、酸化チタンが最も高い分解能力を有しまた安定
かつ安全なことから望ましい。酸化チタンの分解能力に
ついては、ほとんどあらゆる有機物に及び、水と二酸化
炭素、塩酸等の無機物に変化させる無機化が可能であ
る。本発明に用いられる光触媒は、有害物質を吸着保持
して逃がさない特性が必要であるので、吸着表面積が大
きく吸着力が高い必要がある。このような光触媒として
は、溶剤や水に分散したコロイド状の酸化チタン(酸化
チタンゾル)や、微細な粉体が望ましい。吸着性を高め
るために、活性炭やゼオライト、活性アルミナ等を光触
媒と混合したりあるいは光触媒粒子にコーティングした
りすることが効果的である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Photocatalysts usable in the present invention include titanium oxide, zinc oxide, tin oxide, strontium titanate, tungsten oxide, bismuth oxide and iron oxide. Titanium oxide has the highest decomposition ability. It is desirable because it is stable and safe. Regarding the decomposition ability of titanium oxide, it can cover almost all organic substances and can be mineralized by changing to water and inorganic substances such as carbon dioxide and hydrochloric acid. The photocatalyst used in the present invention needs to have a property of adsorbing and holding harmful substances so that it does not escape. As such a photocatalyst, colloidal titanium oxide (titanium oxide sol) dispersed in a solvent or water or fine powder is desirable. In order to enhance the adsorptivity, it is effective to mix activated carbon, zeolite, activated alumina and the like with a photocatalyst or to coat photocatalyst particles.
【0009】燃焼時のダイオキシン発生を抑制するため
に塩化ビニル樹脂などに混入する場合では、さらに別の
光触媒の特性が必要になる。すなわち通常の使用時には
光触媒活性は働かず、製品を酸化分解することはない
が、製品が燃焼時の熱を履歴したのちは、光触媒の活性
が発現し、吸着力は熱処理の過程を経ても保持されなく
てはならない。このような光触媒の例として、結晶化度
の低いアモルファス様な酸化チタンゾル等が使用でき
る。すなわち結晶性が低い酸化チタンは光触媒活性が低
く、塩化ビニル等に練り込んでも光触媒劣化を生じる心
配はないが、数百度から800℃の範囲でいったん熱処
理されると、光触媒活性が高まり所望の分解力が生じ
る。これによって塩化ビニルが焼却された後の灰に含ま
れるダイオキシンは光触媒上で光があたることによって
分解し無毒化していく。In the case of mixing in a vinyl chloride resin or the like in order to suppress the generation of dioxin during combustion, further characteristics of a photocatalyst are required. That is, the photocatalytic activity does not work during normal use and does not oxidatively decompose the product, but after the product has accumulated heat during combustion, the activity of the photocatalyst develops and the adsorption power is maintained even after the heat treatment process Must be done. As an example of such a photocatalyst, an amorphous titanium oxide sol having a low crystallinity can be used. That is, titanium oxide having low crystallinity has low photocatalytic activity, and there is no fear of causing photocatalytic degradation even when kneaded with vinyl chloride or the like. However, once heat-treated at a temperature in the range of several hundred degrees to 800 ° C., photocatalytic activity increases and desired decomposition occurs. Forces arise. As a result, the dioxin contained in the ash after the vinyl chloride has been incinerated is decomposed and detoxified when exposed to light on the photocatalyst.
【0010】このような応用を考える場合製品中の光触
媒粒子の分布状態は、極力均一で有害物質を効率よく吸
着補足して放さないことが必要である。塩化ビニルに応
用する際には、その中での光触媒粒子ができるだけ均一
に分散していることが望ましい。また殺虫剤や農薬に応
用する際も、酸化チタンは液剤中に均一に分散している
ことが望ましい。液剤中の分散性を高めるためには、p
Hを調整したり適当な分散剤を用いることが有効であ
る。たとえば酸化チタンの等電点は中性に近いので酸性
やアルカリ性に液剤のpHをもっていくことによって安
定化できる。また酸化チタンの安定なpH領域を変化さ
せるためには、酸化チタン粒子の周囲にシリカ等の被覆
を行うことで等電点を変化させることができる。When considering such applications, it is necessary that the distribution state of the photocatalyst particles in the product is as uniform as possible and that the harmful substances are efficiently adsorbed and captured and not released. When applied to vinyl chloride, it is desirable that the photocatalyst particles therein are dispersed as uniformly as possible. Also, when applied to insecticides and pesticides, it is desirable that the titanium oxide is uniformly dispersed in the liquid preparation. In order to increase the dispersibility in the solution, p
It is effective to adjust H and use an appropriate dispersant. For example, since the isoelectric point of titanium oxide is close to neutral, it can be stabilized by adjusting the pH of the solution to acidic or alkaline. Further, in order to change the stable pH range of titanium oxide, the isoelectric point can be changed by coating silica or the like around the titanium oxide particles.
【0011】このような応用は、塩化ビニルや殺虫剤、
農薬に限らずあらゆる製品に適応できる。界面活性剤も
環境汚染の原因となるが、界面活性剤を含む洗剤、石
鹸、はみがき等の製品にも、酸化チタンなどに光触媒を
混入することによって、いずれ環境中に拡散した場合の
無毒化が図れる。Such applications include vinyl chloride, insecticides,
It can be applied to all products, not just pesticides. Surfactants also cause environmental pollution, but detergents, soaps, and postcards containing surfactants can be detoxified when they diffuse into the environment by mixing photocatalyst into titanium oxide, etc. I can do it.
【0012】[0012]
【実施例】[実施例1]光触媒酸化チタンゾル(6wt
%、アルカリ解膠型、多木化学製)をアルミナ基板にス
プレーコートで約1ミクロンの厚みに薄膜化したものに
ついて、種々の温度で熱処理した後、有害ガスであるメ
チルメルカプタンの分解活性を評価した。まず暗時に3
ppmのメチルメルカプタンガスをサンプルの入ってい
る11lのガラス容器に導入し、BLBランプ4Wを8
cmの距離で照射しガスの分解速度を評価する。30分
後に濃度減少率をR30としてグラフにプロットすると
図1のようになり、初期は光触媒活性があまり大きくな
いが、温度上昇とともに活性が向上し、800℃を超え
ると活性低下をきたす。[Example 1] Photocatalytic titanium oxide sol (6 wt.
%, Alkali peptized type, manufactured by Taki Kagaku Co., Ltd.) spray-coated on an alumina substrate to a thickness of about 1 micron, heat-treated at various temperatures, and evaluated the decomposition activity of toxic gas methyl mercaptan. did. First 3 in the dark
ppm of methyl mercaptan gas was introduced into an 11 liter glass container containing the sample, and the BLB lamp 4W was turned on for 8 hours.
Irradiate at a distance of cm and evaluate the decomposition rate of gas. After 30 minutes, the concentration reduction rate is plotted on a graph as R30, as shown in FIG. 1. At the beginning, the photocatalytic activity is not so large, but the activity increases as the temperature rises, and the activity decreases when the temperature exceeds 800 ° C.
【0013】このような酸化チタンゾルを焼却廃棄を想
定して700℃で熱処理したものについて、ダイオキシ
ン(DCDD:2,7-dichloro-p-dibenzodioxin)の分解
活性を、ガスクロマトグラフによって評価した結果、ダ
イオキシンの分解能力があることが示された。The decomposition activity of dioxin (DCDD: 2,7-dichloro-p-dibenzodioxin) was evaluated by gas chromatography of a heat treatment of such a titanium oxide sol at 700 ° C. assuming incineration and disposal. Has the ability to decompose.
【0014】[0014]
【発明の効果】本発明によれば、ホルモン様物質等の環
境汚染を引き起こす可能性のある有害物質を含む製品ま
たは焼却過程等で有害物質を発生させる製品が、環境中
に排出されたときの有害物質を、太陽光などで分解し無
害化することができるので、環境汚染を防止することが
可能になる。According to the present invention, when a product containing a harmful substance such as a hormone-like substance or the like which may cause environmental pollution or a product that generates a harmful substance in an incineration process or the like is discharged to the environment, Since harmful substances can be detoxified by decomposing with sunlight or the like, environmental pollution can be prevented.
【図面の簡単な説明】[Brief description of the drawings]
【図1】酸化チタンゾルの光触媒活性と熱処理温度との
関係を示す図である。FIG. 1 is a diagram showing the relationship between the photocatalytic activity of a titanium oxide sol and a heat treatment temperature.
Claims (11)
を、吸着効果および分解効果を有する光触媒または光触
媒と吸着剤によって分解浄化する方法。1. A method for decomposing and purifying harmful substances which may diffuse into the environment using a photocatalyst having an adsorption effect and a decomposition effect or a photocatalyst and an adsorbent.
れのある成分を含む製品による環境汚染を防止する方法
であって、製品中に有害物質の吸着効果および分解効果
を有する、光触媒または光触媒と吸着剤を、予め含有さ
せることによって、製品が環境中に拡散した場合に、含
有または生成する有害物質を吸着し、太陽光や照明の光
によって自然に分解し、無害化させる環境汚染の防止方
法。2. A method for preventing environmental pollution caused by a product containing a component which may generate harmful substances and diffuse into the environment, comprising a photocatalyst or a photocatalyst having an effect of adsorbing and decomposing harmful substances in the product. Prevents environmental pollution by adsorbing harmful substances contained or generated when the product diffuses into the environment, and naturally decomposing and detoxifying by sunlight or lighting when the product diffuses into the environment Method.
れのある成分を含む製品であって、製品中に有害物質の
吸着効果および分解効果を有する光触媒または光触媒と
吸着剤を、予め含有させることによって、製品が環境中
に拡散した場合に、含有または生成する有害物質を吸着
し、太陽光や照明の光によって自然に分解し、無害化さ
せる環境汚染を防止する機能を有する製品。3. A product containing a component that may generate harmful substances and diffuse into the environment, wherein a photocatalyst having a harmful substance adsorption effect and a decomposition effect and a photocatalyst and an adsorbent are previously contained in the product. Thus, when the product diffuses into the environment, the product has a function of adsorbing harmful substances contained or generated, and having a function of preventing environmental pollution, which is naturally decomposed and rendered harmless by sunlight or illumination light.
焼したときに発生するダイオキシン類であり、燃焼中に
発生するダイオキシン類を、予め塩化ビニルに含有させ
た光触媒または光触媒と吸着剤に吸着させ、引き続いて
光触媒分解する請求項1に基づく環境汚染の防止方法。4. The harmful substance is dioxins generated when a vinyl chloride resin is burned, and the dioxins generated during the combustion are adsorbed by a photocatalyst or a photocatalyst and an adsorbent previously contained in vinyl chloride. 2. A method for preventing environmental pollution according to claim 1, wherein said method is followed by photocatalytic decomposition.
焼したときに発生するダイオキシン類であり、燃焼中に
発生するダイオキシン類を、予め塩化ビニルに含有させ
た光触媒または光触媒と吸着剤に吸着させ、引き続いて
光触媒分解する機能を有する請求項2に基づく環境汚染
を防止する機能を有する塩化ビニル製品。5. The harmful substance is a dioxin generated when a vinyl chloride resin is burned, and the dioxin generated during the combustion is adsorbed by a photocatalyst or a photocatalyst and an adsorbent previously contained in vinyl chloride. 3. A vinyl chloride product having a function of preventing environmental pollution according to claim 2, which has a function of causing photocatalytic decomposition.
散布された後予め農薬に含有させた光触媒または光触媒
と吸着剤に吸着させ、ひき続いて光触媒分解する請求項
1に基づく環境汚染の防止方法。6. The environmental pollution according to claim 1, wherein the harmful substance is a pesticide, which is dispersed in the environment, adsorbed on a photocatalyst or a photocatalyst and an adsorbent previously contained in the pesticide, and subsequently decomposed by photocatalyst. Prevention method.
散布された後予め農薬に含有させた光触媒または光触媒
と吸着剤に吸着させ、ひき続いて光触媒分解する機能を
有する請求項2に基づく環境汚染を防止する機能を有す
る農薬製品。7. The method according to claim 2, wherein the harmful substance is a pesticide, which has a function of being dispersed in the environment, adsorbed to a photocatalyst or a photocatalyst and an adsorbent previously contained in the pesticide, and subsequently decomposed by the photocatalyst. Pesticide products that have the function of preventing environmental pollution based on them.
に散布された後予め殺虫剤に含有させた光触媒または光
触媒と吸着剤に吸着させ、ひき続いて光触媒分解する請
求項1に基づく環境汚染の防止方法。8. The method according to claim 1, wherein the harmful substance is an insecticide, which is dispersed in the environment, adsorbed on a photocatalyst or a photocatalyst and an adsorbent previously contained in the insecticide, and subsequently decomposed by photocatalyst. How to prevent environmental pollution.
に散布された後予め殺虫剤に含有させた光触媒または光
触媒と吸着剤に吸着させ、ひき続いて光触媒分解する機
能を有する請求項2に基づく環境汚染を防止する機能を
有する殺虫剤製品。9. The method according to claim 1, wherein the harmful substance is an insecticide, which has a function of being dispersed in the environment, adsorbed on a photocatalyst or a photocatalyst and an adsorbent previously contained in the insecticide, and subsequently decomposed by photocatalyst. 2. An insecticide product having a function of preventing environmental pollution based on No. 2.
環境中に散布された後予め界面活性剤に含有させた光触
媒または光触媒と吸着剤に吸着させ、ひき続いて光触媒
分解する請求項1に基づく環境汚染の防止方法。10. The harmful substance is a surfactant,
2. A method for preventing environmental pollution according to claim 1, wherein after being dispersed in the environment, the photocatalyst or a photocatalyst or a photocatalyst previously contained in a surfactant is adsorbed on an adsorbent, and subsequently photocatalytically decomposed.
環境中に散布された後予め界面活性剤に含有させた光触
媒または光触媒と吸着剤に吸着させ、ひき続いて光触媒
分解する機能を有する請求項2に基づく環境汚染を防止
する機能を有する界面活性剤を含む製品。11. The harmful substance is a surfactant,
3. A surfactant having a function of preventing environmental pollution according to claim 2, which has a function of adsorbing a photocatalyst or a photocatalyst and a photocatalyst and an adsorbent previously contained in a surfactant after being dispersed in the environment and subsequently decomposing the photocatalyst. Including products.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11117698A JPH11342316A (en) | 1998-04-21 | 1998-04-21 | Method of preventing environmental pollution and product having function of preventing environmental pollution |
JP11114226A JP2000084361A (en) | 1998-04-21 | 1999-04-21 | Prevention of environmental pollution and material having function for preventing environmental pollution |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11117698A JPH11342316A (en) | 1998-04-21 | 1998-04-21 | Method of preventing environmental pollution and product having function of preventing environmental pollution |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11342316A true JPH11342316A (en) | 1999-12-14 |
Family
ID=14554424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11117698A Pending JPH11342316A (en) | 1998-04-21 | 1998-04-21 | Method of preventing environmental pollution and product having function of preventing environmental pollution |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH11342316A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7396796B2 (en) | 2000-10-20 | 2008-07-08 | Noritake Co., Limited | Treatment agent, method and device for treating hazardous substances |
-
1998
- 1998-04-21 JP JP11117698A patent/JPH11342316A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7396796B2 (en) | 2000-10-20 | 2008-07-08 | Noritake Co., Limited | Treatment agent, method and device for treating hazardous substances |
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