以马铃薯淀粉、丙烯酰胺(AM)和二甲基二烯丙基氯化铵(DADMAC)为原料进行接枝反应,将接枝产物(TSI)与聚合氯化铝铁(PAFC)复配,制得新型复合混凝剂PAFC-TS1。优化了复合混凝剂制备的工艺条件。研究结果表明,复合混凝剂PAFC-TS1的优选制备...以马铃薯淀粉、丙烯酰胺(AM)和二甲基二烯丙基氯化铵(DADMAC)为原料进行接枝反应,将接枝产物(TSI)与聚合氯化铝铁(PAFC)复配,制得新型复合混凝剂PAFC-TS1。优化了复合混凝剂制备的工艺条件。研究结果表明,复合混凝剂PAFC-TS1的优选制备条件为:OH-浓度与铝铁总浓度的比(r)为0.5,铝铁总浓度与TS1的质量浓度比(Rm)为0.5 mol/g,铝铁摩尔比9∶1。在此条件下处理质量浓度为100 mg/L的活性染料废水,当混凝剂投加量为24 m L/L时,染料去除率可达97%以上。相同条件下,使用PAFC-TS1比单独使用PAFC或PAFCPAM的染料去除率更高。展开更多
Poly(aluminum chloride)(PAC) solutions of different basicity were prepared from pure aluminum foil and hydrochloric acid. Aluminum species were investigated by 27Al NMR spectroscopy and the tridecameric polycation Al ...Poly(aluminum chloride)(PAC) solutions of different basicity were prepared from pure aluminum foil and hydrochloric acid. Aluminum species were investigated by 27Al NMR spectroscopy and the tridecameric polycation Al 13 was detected. With the increase of PAC′s basicity, the molar ratio of Al 13 to Al m in PAC increases. The jar tests with kaolin water and water from Huangpu River at the same PACs dosage showed that the more basicity and content of Al 13, the more effective the coagulation effect on water with middle-high turbidity, while only less effect of the basicity was observed on water with low turbidity.展开更多
文摘以马铃薯淀粉、丙烯酰胺(AM)和二甲基二烯丙基氯化铵(DADMAC)为原料进行接枝反应,将接枝产物(TSI)与聚合氯化铝铁(PAFC)复配,制得新型复合混凝剂PAFC-TS1。优化了复合混凝剂制备的工艺条件。研究结果表明,复合混凝剂PAFC-TS1的优选制备条件为:OH-浓度与铝铁总浓度的比(r)为0.5,铝铁总浓度与TS1的质量浓度比(Rm)为0.5 mol/g,铝铁摩尔比9∶1。在此条件下处理质量浓度为100 mg/L的活性染料废水,当混凝剂投加量为24 m L/L时,染料去除率可达97%以上。相同条件下,使用PAFC-TS1比单独使用PAFC或PAFCPAM的染料去除率更高。
文摘Poly(aluminum chloride)(PAC) solutions of different basicity were prepared from pure aluminum foil and hydrochloric acid. Aluminum species were investigated by 27Al NMR spectroscopy and the tridecameric polycation Al 13 was detected. With the increase of PAC′s basicity, the molar ratio of Al 13 to Al m in PAC increases. The jar tests with kaolin water and water from Huangpu River at the same PACs dosage showed that the more basicity and content of Al 13, the more effective the coagulation effect on water with middle-high turbidity, while only less effect of the basicity was observed on water with low turbidity.
