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Publication Title | Office europeen des brevets (fi) Publication number : 0 4 9 9 3 6 3 A 1 EUROPEAN PATENT APPLICATION

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Office europeen des brevets (fi) Publication number : 0 4 9 9 3 6 3 A 1 EUROPEAN PATENT APPLICATION

@ Int. CI.5: A62D 3/00, B01J 19/18, B01J 19/12

@ Inventor : Urwin, Donald

19 Malvern Drive, Acklam Middlesbrough, Cleveland (GB) Inventor : Howarth, Colin Rawlinson

6 Lynwood Close, Ponteland Newcastle upon Tyne NE20 9JG (GB) Inventor : Sayer, Andrew Timothy

7 The Fairway, Eaglescliffe

Stockton on Tees, Cleveland (GB) Inventor : Wallis, Craig

53 Sir Hiltons Road, Westheath Birmingham, B31 3MH (GB)

(74) Representative : Wilkinson, John

Patent Department Central Laboratories Portrack Lane

Stockton on Tees Cleveland (GB)

(54) Destruction process for photocatalytically degradable organic material.

@ Application number: 92300474.1 (§) Date of filing : 20.01.92

@ Priority : 09.02.91 GB 9102767

(43) Date of publication of application : 19.08.92 Bulletin 92/34

@) Designated Contracting States :

BE CH DE DK ES FR IT LI NL SE

@ Applicant : TIOXIDE GROUP SERVICES LIMITED

Tioxide House, 137-143 Hammersmith Road London W14 0QL (GB)

(57) A process for the decomposition of photocatalytically decomposable organic material includes exposing the organic material to ultraviolet light as the material is passed across the surface of a spinning disc. The organic material is in the form of a liquid dispersion, preferably an aqueous dispersion and the dispersion also contains anatase titanium dioxide which acts as a catalyst in the decomposition process. Preferably the anatase titanium dioxide has a high surface area.

Organic materials such as hydrocarbons, alcohols, acids, esters and others are destroyed in this environmentally acceptable process.

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