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32: Phys3aal at�d TE�erma , echnnlg�es
<br /> pm ' waterstream>flowing to,a,low,.volurne Ogpm),containment well. The infection
<br /> s ar ewell was located 97;ft 30.
<br /> �, � .R g {. ma�from th�recoveiy well
<br /> Al
<br /> ,,� ='A,variety of haolggenated allcpn and alkanes,occurredas,contaminants
<br /> at the site, :,These:included PCH, TCE, bpf,(14 `- and;cis 1,2-) vinyl Qmpzide,,
<br /> 1,151-,TCA,: 11 DCA, TGTFE;(Freon), and.;lesser._guantitaes_of chloroform:,(CF)
<br /> ,� and,pg.bon tetrachloride(CTC).
<br /> 't The.obserred rate of reduction ,m,,alkanes 1,1-DCA ;1,1,1.-TCA, and
<br /> r ' TCT were;-greater than the alkene.compon ids.,(PCE,, 'CE,:and D, } 4PrP... }'
<br /> .I
<br /> x ratesry for vanyl;chlgride CYC), Wand CTL'were,nok.,calculated:since.,the end point
<br /> r
<br /> h� was non. detect(Ftgure,2}-,(Table 2) t,
<br /> Q00
<br /> 5000 0
<br /> F
<br /> TCE
<br /> y r. OZ a ■�1,y;,1 TCA" a
<br /> 1,1-DCE
<br /> r 1000 o- CIS12=DCE
<br /> _ - TCtF�
<br /> 1t!
<br /> 500
<br /> F x:
<br /> �r O
<br /> 5 10 20 _ 30 AO 50 60` '.
<br /> 7dA� (DAYS} _.
<br /> l . ..
<br /> aJ
<br /> VIP
<br /> ' FIGURE 2. Removal ratesofHVOCs during the inleetaop,pilot test.
<br /> F A multisite ; companson,t of chlorinated .solvent, remediation using f'
<br /> nriovatrye technology has independently concluded that :the Criegee"oxidation
<br /> pxocedure showed the greatest rate of removal at lowest operating cost._(Dreiling,
<br /> et'al, 1998): The' use of a 120-volt,-20'amp power°'supply fors the ozonepacger
<br /> ai
<br /> ,a'EG provided a low:electrical consumption during the pilot test
<br /> RESULTS AND CONCLTJSIONS 5, s
<br /> the use of engineered microbubble systems with ozone has proved a
<br /> povverful_means of,targeting and effectively decomposing chlorinated azid
<br /> <
<br /> fluorinated ethenes and ethanes to harrnless by:;products of dilute hydrochloric
<br /> acid(HCl:, dilute h drofluoric acid HFI= and'carbon dioxide CCZ) The
<br /> reaction requires a iow molarato:.of ozone to attack:the central bond of:,the -
<br /> ethene molecule when ethenes are targeted, resulting in the decomposition of the
<br /> chlorinated fragments clearing into a carboiX compound and ab
<br /> ydroxy
<br /> hydroperoxide, which iapidlV lost HCl andT�'L in the presence of water:
<br />
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