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1. (WO1998051619) PROCESS FOR THE REMOVAL OF PENTAVALENT ARSENIC FROM WATER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/051619 International Application No.: PCT/US1998/009501
Publication Date: 19.11.1998 International Filing Date: 11.05.1998
Chapter 2 Demand Filed: 04.12.1998
IPC:
B01J 41/04 (2006.01) ,B01J 45/00 (2006.01) ,C02F 1/28 (2006.01) ,C02F 1/56 (2006.01) ,C02F 1/76 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
41
Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
04
Processes using organic exchangers
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
45
Ion-exchange in which a complex or a chelate is formed; Use of material as complex or chelate forming ion-exchangers; Treatment of material for improving the complex or chelate forming ion-exchange properties
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
28
by sorption
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
52
by flocculation or precipitation of suspended impurities
54
using organic material
56
Macromolecular compounds
C CHEMISTRY; METALLURGY
02
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
F
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1
Treatment of water, waste water, or sewage
72
by oxidation
76
with halogens or compounds of halogens
Applicants:
AFFINITI, LLC. [US/US]; Suite 111 411 Business Center Drive Mt. Prospect, IL 60056, US
Inventors:
SMITH, Paul, K.; US
BERGEMANN, Eugene, P.; US
Agent:
GAMSON, Edward, P. ; Welsh & Katz, Ltd. 22nd floor 120 South Riverside Plaza Chicago, IL 60606, US
Priority Data:
08/854,83412.05.1997US
Title (EN) PROCESS FOR THE REMOVAL OF PENTAVALENT ARSENIC FROM WATER
(FR) PROCEDE POUR ELIMINER L'ARSENIC PENTAVALENT CONTENU DANS L'EAU
Abstract:
(EN) A process for the separation of pentavalent arsenic from an aqueous solution using an N-alkyl pyridinium-containing adsorption medium is disclosed. An oxidizing medium and process for the oxidation of trivalent arsenic to pentavalent arsenic with removal of the pentavalent arsenic so formed is also disclosed.
(FR) Procédé pour séparer l'arsenic pentavalent contenu dans une solution aqueuse en utilisant un support d'adsorption contenant du N-alkyle-pyridinium. L'invention concerne en outre un support d'oxydation et un procédé pour oxyder l'arsenic trivalent de manière à obtenir de l'arsenic pentavalent, et retirer l'arsenic pentavalent ainsi formé.
Designated States: AL, AU, BA, BB, BG, BR, CA, CN, CU, CZ, EE, GE, GW, HU, ID, IL, IS, JP, KP, KR, LC, LK, LR, LT, LV, MG, MK, MN, MX, NO, NZ, PL, RO, SG, SI, SK, SL, TR, TT, UA, UZ, VN, YU
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NZ500915MXPA/a/1999/010319EP0996594CN1262665CA2289734AU1998075677