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1. (WO2009140323) ZERO-VALENT METALLIC TREATMENT SYSTEM AND ITS APPLICATON FOR REMOVAL AND REMEDIATION OF POLYCHLORINATED BIPHENYLS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/140323    International Application No.:    PCT/US2009/043694
Publication Date: 19.11.2009 International Filing Date: 13.05.2009
IPC:
A62D 3/30 (2007.01), C02F 1/68 (2006.01)
Applicants: U.S.A. as represented by THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION; 300 E Street SW Washington, DC 20546 (US) (For All Designated States Except US).
QUINN, Jaqueline, W. [US/US]; (US) (For US Only).
CLAUSEN, Christian, A. [US/US]; (US) (For US Only).
GEIGER, Cherie, L. [US/US]; (US) (For US Only)
Inventors: QUINN, Jaqueline, W.; (US).
CLAUSEN, Christian, A.; (US).
GEIGER, Cherie, L.; (US)
Agent: HEALD, Randall, M.; (US)
Priority Data:
61/053,822 16.05.2008 US
Title (EN) ZERO-VALENT METALLIC TREATMENT SYSTEM AND ITS APPLICATON FOR REMOVAL AND REMEDIATION OF POLYCHLORINATED BIPHENYLS
(FR) SYSTÈME DE TRAITEMENT IMPLIQUANT DES PARTICULES MÉTALLIQUES À VALENCE NULLE ET SON APPLICATION EN VUE DE L'ÉLIMINATION ET DE LA SUPPRESSION DES BIPHÉNYLES POLYCHLORÉS (PCB)
Abstract: front page image
(EN)PCBs are removed from contaminated media using a treatment system including zero-valent metal particles and an organic hydrogen donating solvent. The treatment system may include a weak acid in order to eliminate the need for a coating of catalytic noble metal on the zero-valent metal particles. If catalyzed zero-valent metal particles are used, the treatment system may include an organic hydrogen donating solvent that is a non- water solvent. The treatment system may be provided as a "paste-like" system that is preferably applied to natural media and ex-situ structures to eliminate PCBs.
(FR)La présente invention concerne un système de traitement comprenant des particules métalliques à valence nulle et un solvant organique donateur d'hydrogène en vue de l'élimination des PCB de supports contaminés. Ce système de traitement peut comprendre un acide faible afin de ne pas avoir besoin de recouvrir de métal noble catalytique les particules métalliques à valence nulle. Si l'on utilise des particules métalliques à valence nulle catalysées, le système de traitement peut comprendre un solvant organique donateur d'hydrogène qui est un solvant non aqueux. Ce système de traitement peut se présenter sous la forme d'un système « de type pâte » qui est, de préférence, appliqué sur des supports naturels et des structures ex-situ en vue d'en éliminer les PCB.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, 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, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)