title: Coagulant property of an indigenous seed: home water treatment in Tamil Nadu.
abstract: Use of some vegetable substances as coagulant has been recorded in historical literature. A seed from the tree known as tettan cottai is used today in South Indian villages to purify water. The scrapings of the seed were shown in laboratory experiments to have coagulant properties. It would be extremely valuable to have additional measurements made in South India, where the practice is employed in removal of turbidity, and also to have evidence of the extent of removal microorganisms.
mesh_terms: D011232:Chemical Precipitation; D006801:Humans; D007194:India; D012639:Seeds; D014876:Water Pollution; D014881:Water Supply / Q000592:standards*