Patent SG-11201403795V-A (SG)
Title: Electrode for electrochemical abatement of chemical oxygen demand of industrial wastes
Inventor: BENEDETTO MARIACHIARA
IPC: C25B11/04
Filed: 2013-02-07
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 15 August 2013 (15.08.2013) WIPOIPCT (10) International Publication Number WO 2013/117630 A1 (51) International Patent Classification: C02F1/461 (2006.01) C02F1/467 (2006.01) C25B 11/04 (2006.01) (21) International Application Number: (22) International Filing Date: (25) Filing Language: (26) Publication Language: PCT/EP2013/052403 7 February 2013 (07.02.2013) English English (30) Priority Data: MI20120A000158 7 February 2012 (07.02.2012) IT (71) Applicant: INDUSTRIE DE NORA S.P.A. [IT/IT]; Via Bistolfi 35,1-20134 Milano (IT). (72) Inventor: BENEDETTO, Mariachiara; Via Budrio 38A, Milan (IT). (74) Agent: REITSTOTTER KINZEBACH; SternwartstraBe 4, 81679 Miinchen (DE). (81) Designated States (unless otherwise indicated, for every kind of national protection available)'. AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available)'. ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) — before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) © i> i-H o CJ o & (54) Title: ELECTRODE FOR ELECTROCHEMICAL ABATEMENT OF CHEMICAL OXYGEN DEMAND OF INDUSTRIAL WASTES (57) Abstract: The invention relates to an electrode suitable for decreasing the chemical oxygen demand of waste-water comprising: a) permanent a component; and b) a sacrificial component arranged face-to-face and releasably attached to the permanent component and in electrical contact therewith, said permanent component consisting of Substrate of valve metal a a equipped with a catalytic coating containing noble metals or oxides thereof, said sacrificial component containing elemental iron. Further the invention relates to a method for abatement of the chemical oxygen demand in an aqueous waste containing oily compounds, glycols or waxes, op - tionally consisting of a foundry waste, by an electrolytic process involving anodic chlorine evolution in the presence of trivalent iron. Chlorine evolution may be carried out on the surface of an anode consisting of a catalytically activated-valve metal permanent component coupled an iron-containing to sacrificial component.