微波水热煤矸石制备聚合氯化铝及其性能研究  

Preparation of Polyaluminum Chloride from Coal Gangue by Microwave Hydrothermal Method and Its Performance

作　　者：王文杰 练伟[1] 刘振英[1] 闫雨琪 丁乙凡 朱瑞 刘炎 刘银[1,2,3] WANG Wen-jie;LIAN Wei;LIU Zhen-ying;YAN Yu-qi;DING Yi-fan;ZHU Rui;LIU Yan;LIU Yin(School of Materials Science and Engineering,Anhui University of Science and Technology,Huainan 232001,China;Anhui International Joint Research Center for Nano Carbon-based Materials and Environmental Health,Anhui University of Science and Technology,Huainan 232001,China;State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学材料科学与工程学院,安徽淮南232001 [2]安徽省纳米碳材料与环境健康国际联合研究中心,安徽淮南232001 [3]安徽理工大学深部煤矿开采响应与灾害防治国家重点实验室,安徽淮南232001

出　　处：《安徽化工》2022年第1期51-57,共7页Anhui Chemical Industry

基　　金：安徽省重点研究与开发计划(202104a05020033);2020大学生创新创业训练计划项目(S202010361165)。

摘　　要：采用正交试验,探究了不同方法(水热、水浴、微波水热)、盐酸浓度以及熟化搅拌时间对聚合氯化铝产率的影响,并进一步探究微波水热时间对聚合氯化铝产量及其性能的影响。采用X射线衍射分析仪、红外光谱仪对得到样品进行物相和结构表征,通过浊度分析仪对其絮凝沉降效果评价。实验结果表明:微波酸浸优于其他两种酸浸方法,在微波功率400 W,微波反应15 min,盐酸浓度为20%,熟化搅拌3 h条件下,煤矸石中氧化铝浸出率可达80.80%。将10 mg/100 mL聚合氯化铝加入生活污水,静置10 min后,生活污水的浊度从24.75 NTU下降到8.58 NTU。In this paper,the effects of different methods(hydro-thermal,water bath,microwave hydrothermal assisted method),hydrochloric acid concentration and maturation mixing time on the yield of polymerized aluminum chloride were investigated,and the effect of microwave hydrothermal assisted time on the yield and performance of polymerized aluminum chloride is further explored.The phase and microstructure of the obtained samples were investigated by X-ray diffraction analyzer and infrared spectrometer.The results show that microwave acid leaching method is better than the other two acid leaching methods.The leaching rate of alumina form coal gangue coltan can reach to 80.80%,as the hydrochloric acid concentration is 20%under 400 W microwave power for microwave reaction 15 min,meanwhile the maturation mixing time is about 3 h.The turbidity of the domestic sewage decrease from 24.75 NTU to 8.58 NTU,as 10 mg/100 mL polymerized aluminum chloride was added into domestic sewage and let it stewing for 10 min.

关 键 词：煤矸石 微波水热法 聚合氯化铝 生活污水 絮凝沉降 

分 类 号：X703.5[环境科学与工程—环境工程]