Reaction products of polyacrylonitrile with dicyandiamide — new flocculation agents —
1986; Wiley; Volume: 141; Issue: 1 Linguagem: Inglês
10.1002/apmc.1986.051410106
ISSN1522-9505
Autores Tópico(s)Environmental and Industrial Safety
ResumoAbstract A new flocculation agent is prepared by reaction of polyacrylonitrile with dicyandiamide in alkaline solution, followed by acid hydrolysis. The polymer contains guanamine‐, N‐carbimidoyl‐N′‐cyanoguanidine‐, amido‐, hydronaphthiridine‐, and carboxylic‐groups. In consequence of the alkaline and acidic groups present, the polymer shows polyampholytic properties and can be used as a primary flocculation agent. Fields of application are removal of contaminants dispersed in water, like waste, algae, bacteria and also in some cases dissolved substances like dyes, etc. Concepts of the flocculation activity and suggestions of application are discussed.
Referência(s)