| 摘要 |
The use of grafted celluloses, in fibrous form, especially paper, nonwoven, wadding, yarn or textile, comprising quaternary ammonium functional groups for the removal of humic substances and of the nitrates present in natural or industrial waters. …<??>The grafted cellulose is obtained, for example, by radical grafting with the aid of an unsaturated monomer containing a quaternary ammonium function group, especially quaternised diethylaminoethyl methacrylate. …<??>Its capacity is higher than or equal to 0.2 meq./g. |
