AN IMPROVED PROCESS FOR ADSORPTION AND SUBSEQUENT REDUCTION OF HEXAVALENT CHROMIUM USING FERROUS SAPONITE CLAY TO REMOVE CHROMIUM FROM WATER

摘要

An improved process for adsorption and subsequent reduction of hexavalent chromium using ferrous saponite clay to remove chromium from water An improved process for adsorption and subsequent reduction of hexavalent chromium using ferrous saponite clay to remove chromium from water by reacting aquous dichromate solution with ferrous-saponite clay of formula {Nao.eo K0.40 Ca0.47}[Mg2.o5Fe2+ 3.95](Si 6.45AI-1.55) O2o(OH)4 having particle size in the range of 0.1 to 5 m at temperature 50 to 200°C for the period of 1 to 3 hours, separating the clay by centrifugation and filtration.