Abstract:
Sulfuric acid activated clay is a byproduct of the synthesis of liquid coagulant. It has been used as an adsorbent for the adsorption of Fe (III) of Siak Riverwater. The clays were washed with aquadest until pH of the filtrate close to neutral, then clay were dried to constant weight at 105°C. Adsorbent characterization was the surface area and then test the adsorption capacity of Fe (III)of the Siak River water was observed under the influence of contact time and the weight of adsorbent. The surface area of ACS0.2 21.58 m2/gand 56.18 m2/g for ACS0.4.The adsorption results showed that the ACS0.4 adsorbent effectively adsorb Fe (III) of the Siak River water as much as 96.95% during the contact time of 3 hours and 2 grams adsorbent weight. The content of Fe (III) remaining in the Siak River water after the adsorption process has met the water quality standard limits PP Nomor 82 Tahun 2001 on Water Quality Management and Water Pollution Control and PERMENKES No.416/MENKES/PER/IX/1990 about Quality Requirements of Clean Water
