Cationic starch was prepared via reaction of starch with 3-chlorine-2-hydroxypropyl trimethylammonium chloride by wet-process. Effects of pH, adsorbent dosage, adsorption time and temperature on adsorption efficiency were investigated. At room temperature, the optimal adsorption condition of cationic starch for simulated phosphorus containing wastewater was: pH 3.0,adsorbent dosage 12.0 g/L, adsorption time 2.0 h,under this condition, removal rate of cationic starch for phosphorus could up to 90.41％.%以淀粉为原料、3-氯-2-羟丙基三甲基氯化铵为阳离子醚化剂,采用湿法制备阳离子淀粉.考察了pH、吸附剂用量、吸附时间和吸附温度等因素对吸附效果的影响.室温下,阳离子淀粉对含磷模拟废水的吸附工艺条件为:pH为3.0,吸附剂用量为12.0g/L,吸附时间为2.0 h.在上述条件下,阳离子淀粉对磷的去除率可达90.41%.
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