Das, D.D.; Mahapatra, R.; Pradhan, J.; Das, S.N.; Thakur, R.S.
(Journal Of Colloid And Interface Science, 232(2), 2000: 235-240)
Removal of hexavalent chromium from aqueous medium by using activated cow dung carbon was studied. Cow dung was carbonized and activated by treating with concentrated H2SO4 followed by heating for 24 h at 120 degreesC. The ...