摘要
以内蒙古煤系高岭土为原料,通过酸溶法用浓硫酸在200℃反应制备了硫酸铝,进而制备聚合硫酸铝(SPAS),并采用X射线衍射、热重分析和红外光谱进行表征。结果表明,该方法制备的硫酸铝为Al_2(SO_4)_3·18H_2O。S-PAS的絮凝效果优于市售聚合硫酸铝(O-PAS),其浓度10 m L/L时,浊度去除率最高,达90%。
The aluminum sulfate was prepared from Inner Mongolia coal-bearing Kaolinite by the direct extraction of aluminum using concentrated sulfuric acid at the temperature of 200 ℃.Meanwhile polymerized aluminum sulfate was synthesized.The obtained samples were characterized by X-ray diffraction (XRD),Thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR).The results showed that as-prepared aluminum sulfate has a formula of Al2(SO4)3·18H2O.The flocculation test showed that the flocculation performance of polymerized aluminum sulfate (S-PAS) is better than commercially available polymerized aluminum sulfate (O-PAS).And when the concentration of PAS is 10 mL/L,the PAS exhibits the best flocculation performance for the domestic sewage with the highest turbidity removal rate of 90%.
出处
《应用化工》
CAS
CSCD
北大核心
2017年第6期1074-1077,共4页
Applied Chemical Industry
基金
国家自然科学基金项目资助(21267016)
关键词
煤系高岭土
硫酸铝
聚合硫酸铝
絮凝性能
coal-bearing Kaolinite
aluminum sulfate
polymerized aluminum sulfate
flocculation performance