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1. (WO2014188443) A WATER PURIFICATION COMPOSITION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2014/188443    International Application No.:    PCT/IN2014/000221
Publication Date: 27.11.2014 International Filing Date: 08.04.2014
IPC:
A01N 65/44 (2009.01)
Applicants: TATA CHEMICALS LIMITED [IN/IN]; Bombay House 24 Homi Modi Street Mumbai 400001 (IN)
Inventors: RAUTARAY, Debabrata; (IN).
PARIDA, Prabhat Kumar; (IN).
LOLAGE, Mayura; (IN).
ANGAL, Ashwini; (IN)
Agent: KAREER, Aparna; Obhan & Associates 501/7, Lane W-21A Western Avenue Sainik Farms New Delhi 110062 (IN)
Priority Data:
1367/MUM/2013 12.04.2013 IN
Title (EN) A WATER PURIFICATION COMPOSITION
(FR) COMPOSITION DE PURIFICATION D'EAU
Abstract: front page image
(EN)A water purification composition and a method of preparing the same are disclosed. The water purification composition comprising porous granules of rice husk ash- silver nanoparticles-chitosan matrix, obtained by adding rice husk ash bonded to silver nanoparticles or rice husk ash and silver nanoparticles to a chitosan gel, the chitosan gel formed by dissolving ehitosan in an aqueous solution of an organic acid, such that the ratio of chitosan to rice husk ash is in a range of 3:100 to 15:100 weight by weight wherein the porous granules are obtained in a range of 0.15 mm to 1 mm.
(FR)Cette invention concerne une composition de purification d'eau et un procédé pour la préparer. La composition de purification d'eau selon l'invention comprend des granules poreux constitués par des cendres de balles de riz - nanoparticules d'argent - matrice chitosane, qui sont obtenus par ajout des cendres de balles de riz liées aux nanoparticules d'argent ou des cendres de balles de riz et des nanoparticules d'argent à un gel de chitosane, le gel de chitosane étant formé par dissolution de chitosane dans une solution aqueuse d'un acide organique, de façon que le rapport du chitosane aux cendres de balles de riz soit dans une plage de 3:100 à 15:100 en poids/poids, les granules poreux obtenus ayant une taille dans la plage de 0,15 à 1 mm.
Designated States: 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, IR, IS, JP, KE, KG, 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, SA, 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.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)