The flocculation properties of soluble soybean polysaccharide
Soybean soluble polysaccharide was extracted by sodium hydroxide. The flocculating property in Kaolin suspension and the influence factors of density, pH, temperature, settling time were studied, Results showed that the four factors had certain effects on the flocculating activity of soybean soluble polysaccharide. When the density of ferric sulfate was 0.040 mmol/L in the Kaolin suspension, the suitable flocculation conditions were as follows: density of soybean soluble polysaccharide 1 mg/L, pH value 7.0, temperature 45 ℃, setting time 20 min, and the flocculating rate was 97.3%.