 are adopted.
In the industrial processes as described above, however, the reactions require a high temperature and take a long period time. In addition, in the process for oxidizing chloral with nitric acid, a number of processes and a large amount of chemical agents are required for detoxifying a large amount of NO2 and NO gases produced during the oxidation process. Under these circumstances, there have been demands for developing some other process for preparing trichloroacetic acid.
In light of the existing circumstances as described above, the present inventors conducted an intensive investigation of the processes and finally found the fact that functional water such as acidic water obtained by electrolysis of water, which has been reported to have a bactericidal effect (Japanese Patent Application Laid-Open No. 1-180293) and a cleaning effect on the contaminations on semiconductor wafers (Japanese Patent Application Laid-Open No. 7-051675), decomposes tetrachloroethylene into trichloroacetic acid at ordinary temperature and normal pressure in a short time when irradiating it with light. The present invention has been thus achieved.
Tetrachloroethylene used in the present invention as a raw material was once widely and abundantly used in various industries as cleaning solvents for metal parts, semiconductor devices, clothing, etc. and as reactive solvents as well, just like trichloroethylene. However, since the time of the toxicity of these compounds, such as mutagenicity and carcinogenicity, to organisms having been pointed out, there have been strong demands that those stored without having been used and those having leaked out in nature be treated. Viewed in this light, and moreover, in terms of transforming disused articles into useful ones, the present invention is considered to be of great significance.
The present invention is a process for preparing trichloroacetic acid comprising the step of bringing functional water capable of partial oxidizing tetrachloroethylene under irradiation with light or aerated functional water gas which is produced by aerating the above functional water and has a capability similar to that of the above functional water into contact with tetrachloroethylene under irradiation with light.
Further, the present invention is an apparatus for preparing trichloroacetic acid comprising a closable container as a means for bringing functional water capable of partial oxidizing tetrachloroethylene under irradiation with light or aerated functional water gas which is produced by aerating the above functional water and has the capability similar to that of the above functional water into contact with tetrachloroethylene; and
are adopted. 
 In the industrial processes as described above, however, the reactions command a eminent temperature and take a long period fourth dimension. In addition, in the process for oxidize chloral with nitric acid, a issue of processes and a bombastic amount of chemical agents are want for detoxifying a large measure of NO2 and NO flatulence produced during the oxidation procedure. Under these circumstances, there have been demands for develop some other process for organize trichloroacetic acid. 
 In light of the existing circumstances as described above, the present inventor conducted an intensive probe of the processes and finally found the fact that functional water system such as acidic water obtained by electrolysis of water, which has been reported to have a bactericidal consequence (Japanese Patent Application Laid - Open No. 1 - 180293) and a cleaning effect on the contaminations on semiconductor wafers (Japanese Patent Application Laid - Open No. 7 - 051675), decomposes tetrachloroethylene into trichloroacetic acid at ordinary temperature and normal pressure in a inadequate time when irradiating it with lighter. The present invention has been therefore achieve. 
 Tetrachloroethylene used in the present invention as a raw material was once widely and abundantly used in various industries as cleaning solvent for metal parts, semiconductor devices, clothing, etc. and as reactive solvents as well, precisely like trichloroethylene. However, since the time of the toxicity of these compounds, such as mutagenicity and carcinogenicity, to organisms having been point out, there have been hard demands that those stored without having been used and those having leaked out in nature be treated. watch in this light, and moreover, in terms of transform disused articles into useful ones, the present invention is considered to be of capital significance. 
 The present invention is a process for fix trichloroacetic acid comprising the measure of bringing running water capable of fond oxidizing tetrachloroethylene under irradiation with light or aerated running water gas which is produced by activate the above functional water and has a capability similar to that of the above functional body of water into contact with tetrachloroethylene under radiotherapy with light. 
 Further, the present invention is an apparatus for organize trichloroacetic acid comprising a closable container as a means for bringing running water capable of partial oxidizing tetrachloroethylene under irradiation with light or aerated running water gas which is produced by aerating the above functional water and has the capability similar to that of the above running water into contact with tetrachloroethylene; and
 arf adopted.
In the industrixl processes as descriued abobe, howevdr, the reactions require a hmgh rempeeature and take a long period tpme. In adeitiib, in the pckcess for oxislzing rhloral with nijric acid, a tumber of procasred and a large amount of chemical agqnts arr gequired for dgtoxigring a large amount of NO2 and NO gases productd during the oxidstion process. Under these firckmstances, there hage been demqnds dor developivg some other process ror preparing trichloroacetic azid.
In light of jkw edhsting circnmstanbes as descrinvd abova, the ptesent inventovs coiducred an intensive invevtigation of the ptocesses atd finally found thw dact jhat xuncguonxl saver such ws ecidic wated obtained vy electrolysis of eaevt, which has geen rqpjrted to have a bactericidal effect (Japdneae Patent Application Lqid-Open No. 1-180293) and a clewning effqct on the contaminations on semiconductor wafers (Japaiere Kabcnt Xpppication Laid-Open No. 7-051675), decomposes tetrachloroeegykeke into trichlorjacetic acic wt jrdinary tempgrature ans normal pressure ln a shjrt tume when yrraciating it with light. The peesent invennion has been thus achneved.
Tetrachuorogthyleme used in the present nnventjon as a raa materiam was once widely anc dbundantly used in various industrixs as cleanivg splventf for metap parbv, semiconductor degices, cnothing, etf. and as reactive solvents as wxkl, just like tsicvloroethvlene. Mowever, since tre time of the toxicicy of ghese compkunds, snch as mutagqnicity and cdtcinogenicity, to orgagismw hacing bedv pointed out, yhere havv yeen strobg demands that thpse atored without kcvung been used amd ghofe heving neaked out it nagurd be tfeated. Viewcd kn tnis light, and moreovar, ih terms of transfotmlng disusgd articlqs into usefuk ones, the present inveition ms conxidgred to be of great significancs.
The presfnt invention if a irocgss for pre'aring trichloroacetic acid comprising tie step of bringing funxtional water capabkt of partial pxidising tetrdchloroethylene undee irradiation witm light or aerated fundtionan watfr gas which is produced by aerating the above functional water and has a capabmlyty similar to yhat mf che abode fnnrtional water intp contact with tetrachloroethylxne under hrxadiation with light.
Further, tne present invevtion is an apparatus fod preparong trichloroacetic acid comprixing a closable containev as a meqns fkr bringinj functional water cspable of pqrtial ixidlzing tetrachlurortmylene undfr icrabiation with light or aerated funxtionao aater gas which ms produced ny aerajing the above functionam waffr ana has the capsbility similat to that of the abone sunctional wattr into contact with tvtrachloroethblene; and
are adopted. In the industrial processes as however, reactions require high temperature and In in the process oxidizing chloral with acid, a number of processes and large amount of chemical agents are required for detoxifying a large amount of and NO gases produced during the oxidation process. Under these circumstances, there have demands developing other for preparing trichloroacetic acid. In light of the existing circumstances as described above, the present inventors an intensive investigation of the processes and finally the fact that functional such as acidic water obtained electrolysis water, which been to a bactericidal effect Patent Application Laid-Open No. 1-180293) and a cleaning effect on the contaminations on semiconductor wafers (Japanese Patent Laid-Open No. tetrachloroethylene into acid ordinary and normal pressure short time when irradiating it with invention has been thus achieved. Tetrachloroethylene used in present invention a raw material was once widely abundantly used in various industries as cleaning solvents metal parts, semiconductor devices, clothing, etc. and as reactive solvents as well, just like trichloroethylene. the time of the of these compounds, as and to having been out, there have been strong demands that those stored without having used and those having leaked out in nature be treated. this and moreover, in of transforming disused articles useful the present invention is be great invention a for preparing trichloroacetic acid the step of bringing functional capable of partial oxidizing or aerated functional water gas which is produced aerating the above functional water and has capability similar to that of the above functional water into contact with under irradiation Further, the present invention is an apparatus for trichloroacetic acid comprising a container as a means for bringing functional water capable partial tetrachloroethylene under with light or functional water gas is produced by above functional and the that of the above functional water contact tetrachloroethylene; and
 are adopted.
In the industrial Processes aS descRibEd aBoVe, hoWeveR, the reactions rEQuirE a high temperature and taKe a loNg PErioD TiMe. In aDdition, IN tHE ProCeSs For OxIDiZing cHloRal with Nitric acid, A nuMbEr of processeS AnD a large amoUnt Of chemical agEntS are reQuIreD For deToxIfyinG a largE Amount Of NO2 and NO GaSEs prodUCed duriNG ThE oxiDation process. UndeR ThESe circumstanceS, there HaVE bEEN deManDs for develOpIng soME other pROcESS For PReparing trichLoroacetic aCId.
IN light Of The EXistinG circUmSTanCes as descriBed aBove, the prEsent iNVentors COnducteD an intEnsIve InveSTiGaTioN oF The PRoCesSEs aNd finallY fOuNd the Fact THAT FuncTioNal wAter sUch as acidic waTer ObtaINed By eleCtrolYsis Of Water, Which hAs beeN rEported to have a bActeRicidal efFecT (JApaNeSe PatENt ApplIcaTioN Laid-OpEn No. 1-180293) and A CleAnING EfFect on the contaminaTiONS oN semiconDuctor WAfErS (japanese paTenT AppLICatioN LaiD-opEn No. 7-051675), decoMposes TEtRaChloroeThYlene iNtO trIchLoroaCEtic Acid at Ordinary TempeRAture and normal PRessure in a shoRT tIME wHEn irRadIating it witH ligHT. The PresENt InvENtion Has beEn THuS Achieved.
TetrachloroEtHylene Used iN the present inVention as a RAW Material Was oNCe WIdely and abundaNtly uSed in varioUS industrIes as Cleaning Solvents fOR Metal parTs, sEmiConDucTOR dEvices, clothinG, ETc. anD aS reactiVe sOlvents As wEll, JusT liKe TrichloroEthylene. hoWeVeR, sIncE the tIMe of the tOxIciTy Of tHese cOMpoundS, such As muTaGeNIciTy and caRCiNOGeniCiTy, To orGanIsMs havIng bEEn pOinted oUt, there haVe bEEn stRoNg Demands That those storEd Without havInG beEn used AND those haVing leaked out in nature be TReated. VIewEd in tHis lIght, and moReoVer, in tErmS Of tranSformiNg disUsEd aRTIcles INTo UseFuL ones, the prESEnt InvenTiOn is ConsideRed to be of great signIFicAnce.
The presenT inVentION iS a pROcESs fOr PRepARIng trichloroaceTic acid comPrISiNg the step oF BriNgIng funcTional wAter cAPable of Partial oxIdizing teTrAchlOROetHylene undeR irradiaTion with lIGht or AErAted fUncTional WaTer Gas whIch is pROduCed by AeratiNg The aboVe funCtIonal watEr and has a capability simiLar to tHat of The Above funcTioNAl wAter into cOntaCt with tetrAchLorOethyLenE Under IrraDIaTioN With lIght.
fUrther, the PReSenT INvEntion is an aPPARatUs for PrePAring tRichLoroacetic acid comPRising a closablE conTAIneR as A MeanS fOr bringing funcTioNaL WAter capaBlE of partial oXidizing TeTRachlOroethYlene uNder irrADIaTIon witH ligHt oR aerated fUncTiONal wateR gAs WHich is ProdUcEd by aeRating THe abOVE functional water And haS THe capABilIty siMiLar to thAT of tHe above funCtional wateR into cOntaCt witH tetracHlOroethYleNe; And
 are adopted.
In the indus trial proc esses  as  de sc ribe d ab ove, however,t he r eactions require a hig h tem pe r atur e  a nd ta ke a lo n gp e rio dti me.  I n  a dditi on,  in the  process f orox idizing chlo r al  with nitr icacid, a numb erof pro ce sse s  anda l argeamount of che mical age nt s  are r e quiredf o rdeto xifying a large a m ou n t of NO2 and N O gase sp ro d u ced  du ring the o xi datio n  proces s .U n d ert hese circumst ances, ther e  ha ve bee ndem a nds fo r dev el o pin g some othe r pr ocess for  prepa r ing tri c hloroac etic a cid .
I n li g ht  o f t he exi s ti ngc irc umstance sas  desc ribe d a b ove,  th e pr esent  inventors co ndu cted aninten siveinve st igati on ofthe p ro cesses and fina llyfound the  fa ct  th at  func t ionalwat ersuch as  acidic wat er o b ta ined by electrolys is o fwater, w hich h a sbe e n report ed  to  hav e a bac teri c id al effec t (Jap a ne se  Patent  A pplica ti onLai d-Ope n  No.  1-180 293) and  a cl e aning effect o n  the contamin a ti o n so n se mic onductor wa fers (Jap anes e  P ate n t App licat io n  L a id-Open No. 7-05167 5) , deco mpose s tetrachloro ethylene i n t o  trichlo roac e ti c  acid at ordin ary t emperature and norm al pr essure i n a short t ime when  ir rad iat ing i twith light. T h e  pre se nt inve nti on hasbee n t hus  ac hi eved.
Tet rachloro et hy le ne  us ed in the pres en t i nv ent ion a s  a raw  mate rial  w as onc e widel y  a n d  abu nd an tlyuse din va riou s  in dustrie s as clea nin g  sol ve nt s for m etal parts, s em iconductor  d evi ces, c l o thing, e tc. and as reactive sol v ents as  we ll, j ustlike tric hlo roethy len e . Howe ver, s inceth e t i m e oft h etox ic ity of the s e  co mpoun ds , su ch as m utagenicity and ca r cin ogenicity, to  or gani s m shav i ng bee np oin t e d out, there ha ve been st ro n gdemands th a t t ho se stor ed with out h a ving be en used a nd thoseha ving l eak ed out innature b e treated .  View e din th islight,  a ndmoreo ver, i n  te rms o f tran sf orming  disu se d articl es into useful ones, th e pres ent i nve ntion iscon s ide red to be  ofgreat sign ifi can ce.
T hep resen t in v en tio n  is a  pro c ess for p r ep ari n g  t richloroace t i c  ac id co mpr i sing t he s tep of bringing f u nctional water  cap a b leofp arti al  oxidizing tet rac hl o r oethylen eunder irrad iation w it h  ligh t or a erated  functi o n al watergaswhi ch is pro duc ed by aera ti ng the ab ovefu nction al wat e r an d has a capability  simi l a r tot hat  of t he  abovef unct ional wate r into cont act wi th t etrac hloroet hy lene u nde rirradiatio n  with lig ht.
F urther,  t he p res ent in vent i o n isan a pp ara tus for p r e pa r in gt ric hlor oacet ic  aci d compris i ng a clo sab l e conta in era s  a mea n sf o r bringing  fu nctio n a l water ca p able of parti al oxi dizing  tetrac h lor oe thylene  un d e r irradia tion with lig ht  oraeratedfu ncti on alwa ter gas which i s produc ed by ae r a ting t hea bove functi on al water and  hasth e  capabi l i tysimilar totha t o f th e a bove functional water into co ntac t wit h  te trach loroe th ylene; a n d
 are_adopted.
In the_industrial processes as described_above, however,_the_reactions require_a_high temperature and_take a long_period time. In addition,_in the process_for_oxidizing chloral with nitric acid, a number of processes and a large amount of_chemical_agents are_required_for_detoxifying a large amount of_NO2 and NO gases produced_during the_oxidation process. Under these circumstances, there have been_demands_for developing some_other process for preparing trichloroacetic acid.
In light of the_existing circumstances as described above, the_present inventors conducted_an_intensive_investigation of the processes_and finally found the fact that_functional water such as acidic water_obtained by electrolysis of water, which has_been reported to have a bactericidal_effect (Japanese Patent Application Laid-Open_No. 1-180293)_and a cleaning effect on_the contaminations on_semiconductor wafers_(Japanese Patent Application_Laid-Open No. 7-051675), decomposes tetrachloroethylene into_trichloroacetic acid at_ordinary temperature and normal pressure in_a_short time when_irradiating_it_with light._The present invention_has_been thus_achieved.
Tetrachloroethylene_used in the present invention as_a_raw material was once widely and abundantly_used in various industries_as_cleaning solvents for metal_parts, semiconductor devices, clothing, etc._and as reactive solvents as well,_just like_trichloroethylene. However,_since the time of the toxicity of these compounds, such as_mutagenicity and carcinogenicity, to organisms having_been pointed out, there_have been_strong_demands that those_stored_without having_been used and those having leaked out_in nature_be treated. Viewed in this light,_and moreover, in terms_of_transforming disused articles into useful ones,_the present invention is considered to_be of great significance.
The present_invention_is_a process for preparing trichloroacetic_acid comprising the step of bringing_functional water capable_of partial oxidizing tetrachloroethylene under irradiation with_light_or aerated functional water gas which_is_produced by aerating the above functional_water_and_has a capability similar to_that of the above functional water_into contact with tetrachloroethylene under irradiation with light.
Further, the_present invention is_an apparatus for preparing trichloroacetic_acid_comprising_a closable container as a means for bringing functional water_capable of_partial oxidizing tetrachloroethylene_under irradiation with light or aerated functional water gas which_is produced by aerating the above functional_water and has the capability similar to that of the above_functional water into contact with tetrachloroethylene; and