OPTIMIZATION OF PHOSPHATE AND ANIONIC POLYACRYLAMIDE FLOCCULANT (APF) LEVEL FOR SUGAR CANE JUICE CLARIFICATION USING CENTRAL COMPOSITE DESIGN

摘要

This study was conducted to determine the optimum conditions of phosphate (P2O5) and the anionic polyacrylamide flocculant (APF) that could result in best cane juice clarification. Two sugar cane varieties (B52298 and NCO334) were used. The P2O5 for both varieties was at 158.6, 200, 300, 400 and 441.4 (mg/L) and APF were used at 0.59, 1, 2, 3 and 3.41 ppm and 0.17, 1, 3, 5 and 5.83 for B52298 and NCO334, respectively. For the B52298 variety, the optimum ranges of levels were 192.2–270 mg/L P2O5 and 2.91–3.41 ppm of APF. For NCO334 variety, the optimum ranges of levels were 229–264.5 mg/L P2O5 and 5.13–5.83 ppm of APF.