Biblio

D. Rout, Verma, R., and Agarwal, S. K., “Polyelectrolyte treatment : an approach for water quality improvement”, Water science and technology, pp. p. 137-141 : 3 fig., 1999.

G. Madhu, George, K. E., and Francis, D. J., “Use of natural polyelectrolytes in the treatment of effluents from centrifuge rubber latex concentration units”, Asian environment, pp. p. 1-12: 1 fig., 8 tab., 1992.

S. Kawamura, “Effectiveness of natural polyelectrolytes in water treatment”, Journal American Water Works Association, pp. p. 88-91: 5 fig., 2 tab., 1991.

I. Hespanhol, “The role of natural polyelectrolytes as coagulant aids : experiments with extracts from cactus, aloe and marine algae in Brazil”. World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 12, 30 p.: fig., 1989.

J. L. Cleasby, “Slow sand filtration and direct in-line filtration of a surface water”. Iowa State University, Ames, IA, USA, p. 40 p.: fig., tab., 1982.

J. Bratby, Coagulation and flocculation : with an emphasis on water and wastewater treatment. Croydon, UK: Uplands Press, 1980, p. xi, 354 p.: fig., tab.

O. J. Sproul, “Critical review of virus removal by coagulation processes and pH modifications”. US Environmental Protection Agency (EPA), Municipal Environmental Research Laboratory, Cincinnati, OH, USA, p. ix, 39 p., 1980.

P. E. C. E. P. I. S. - Lima, “Polimeros naturales y su applicacion como ayudantes de floculacion”, vol. no. 2. CEPIS (Centro Panamericano de Ingenieria Sanitaria y Ciencias del Ambiente), Lima, Peru, p. 32 p. : 22 fig., 10 photogr., 1975.

M. N. Rao and Sastry, C. A., “Studies on Nirmali seed extract as coagulant aid”, Journal of Indian Water Works Association, pp. p. 242-246 : 1 tab., 1973.