Process for the purification of water

Details Process for the purification of water Process for the purification of water

2008-03-19

2011-11-29

Gakh, Yelena G (Department: 1777)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C210S600000, C210S660000, C210S663000, C210S665000, C210S667000

Reexamination Certificate

active

08066884

ABSTRACT:
The present invention relates to a process for the purification of water by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20° C., to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids and the use of the surface-reacted natural calcium carbonate for this process.

REFERENCES:
patent: 2613181 (1952-10-01), Green et al.
patent: 4343706 (1982-08-01), Etzel et al.
patent: 4416780 (1983-11-01), Disselbeck
patent: 6210526 (2001-04-01), Pohlen
patent: 6666953 (2003-12-01), Gane et al.
patent: 2003/0196966 (2003-10-01), Hughes
patent: 2004/0020410 (2004-02-01), Gane
patent: 2004/0238454 (2004-12-01), Mori et al.
patent: 2005/0175577 (2005-08-01), Jenkins et al.
patent: 2006/0048908 (2006-03-01), Wang et al.
patent: 9300287 (1995-01-01), None
patent: 0 989 229 (2000-03-01), None
patent: 1 186 343 (2002-03-01), None
patent: 1607373 (2003-12-01), None
patent: 662646 (1948-08-01), None
patent: 2000/140834 (2000-05-01), None
patent: 2002/346572 (2002-12-01), None
patent: WO 00/39222 (2000-07-01), None
patent: WO 02/064703 (2002-08-01), None
patent: WO 2004/083316 (2004-09-01), None
patent: WO 2005/042412 (2005-05-01), None
Teir et al. “production of precipitated calcium carbonate from calcium silicates and carbon dioxide”. 2005. Energy Conversion and Management. vol. 46. pp. 2954-2979.
International Search Report for PCT Application No. PCT/EP2008/053339.
Written Opinion of the International Searching Authority for PCT Application No. PCT/EP2008/053339.
Tsai et al. “Adsorption of bisphenol-A from aqueous solution onto minerals and carbon adsorbents.” J. of Hazardous Materials, 134:1-3 (2006), pp. 169-175.
Zhang et al. “Removal of estrone and 17B-estradiol from water by adsorption.” Water Research 39 (2005) pp. 3991-4003.
Snyder et al. Role of Membranes and Activated Carbon in the Removal of Endocrine Disruptors and Pharmaceuticals. Desalination 202 (2007) 156-181.

Affiliated with

Also associated with

Rating

Process for the purification of water does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the purification of water, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the purification of water will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4289439