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1. (WO1997037008) MEANS AND PROCESS FOR NITRATE REMOVAL

Pub. No.:    WO/1997/037008    International Application No.:    PCT/IL1997/000116
Publication Date: 9/Out/1997 International Filing Date: 1/Abr/1997
IPC: C02F 3/10
C02F 3/28
C02F 3/30
C02F 3/34
C12N 11/04
Applicants: YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM
VAN RIJN , Jaap
NUSSINOVITCH, Amos
TAL, Joseph
Inventors: VAN RIJN , Jaap
NUSSINOVITCH, Amos
TAL, Joseph
Title: MEANS AND PROCESS FOR NITRATE REMOVAL
Abstract:
A system for nitrate removal from aquariums, both fresh water and marine aquariums, by means of permeable polymeric beads which contain a combination of fermentative and denitrifying bacteria and a carbon source. Preferred beads are beads made from sodium alginate or chitosan. The bacteria, in the presence of the carbon source, are able to reduce nitrate to nitrogen gas. Bacteria which are not harmful to fish are used. The porous beads used in the process are novel and part of the invention.