Nurpiyenti; Muhdarina; Amri, T. A.
(2013-07-19)
Sulfuric acid activated Cengar clay was a side product of liquid coagulant. It was
obtained by calcination of the Cengar clay at 500 oC for 3 hours and then extracted with
sulfuric acid with varying moles (0,2 ; 0,4 and ...