Biblio

Y. Groenewald, “Coal’s hidden water cost to South Africa”. Greenpeace Africa, Johannesburg, South Africa, p. 12 p.; 1 map., 2012.

N. S. Rawat and Singh, D., “Removal of chromium (VI) on bituminous coal”, Asian environment, pp. p. 30-41: 10 fig., 6 tab., 1992.

A. Dutta and Chaudhuri, M., “Removal of arsenic from groundwater by lime softening with powdered coal additive”, Aqua : journal of water supply research and technology, pp. p. 25-29: fig., 1991.

M. Chaudhuri and Osman, S., “Bacteria and turbidity removal from water by bituminous coal pretreated with alum and silver”. pp. p. 193 - 197 : fig., 1990.

M. Chaudhuri and Ghua, S., “Removal of arsenic (III) from groundwater by low-cost materials”, Asian environment, pp. p. 42-50: fig., tab., 1990.

M. Chaudhuri and Sattar, S. A., “Removal of human rotavirus from water by coal-based sorbents”, Water quality bulletin, pp. p. 202-204: tab., 1989.

M. Chaudhuri and Sattar, S. A., “Enteric virus removal from water by coal-based sorbents : development of low-cost water filters”, Water science and technology, 1986.