摘要
综合利用煤气化细渣的天然成份(富含Si、Al、Fe、Ca),以酸浸+碱溶方法制备新型聚合硅酸铝铁絮凝剂(PSAFC),在优化制备条件的基础上,采用X射线荧光光谱仪(XRF)、X射线衍射(XRD)和傅里叶变换红外光谱(FT-IR)对PSAFC进行了表征,证明PSAFC是由Si、Al、Fe、Ca等元素聚合而成非晶相、无定形的高分子无机絮凝剂。同时,以高岭土悬浊液为研究对象,对PSAFC絮凝性能进行了研究。结果表明:当PSAFC质量浓度为50 mg/L,pH为10时,高岭土悬浊液初始浊度低于1439 NTU时,PSAFC对其均具有较好的絮凝性能,浊度去除率均可达95%以上。该研究可为煤气化细渣的综合利用与高分子无机絮凝剂的制备提供新的途径与方法。
A novel polymerized aluminum ferrosilicate flocculant(PSAFC)was prepared by using the acid leaching and alkali dissolved method based on the utilization of the natural composition of Si,Al,Fe,and Ca in coal gasification fine slag.Based upon the optimized preparation conditions,PSAFC was characterized by using X-ray fluorescence spectroscopy(XRF),X-ray diffraction(XRD),and Fourier-transform infrared spectroscopy(FT-IR).It was found that PSAFC was an amorphous,non-crystalline polymer inorganic flocculant formed by the aggregation of Si,Al,Fe,Ca elements.Subsequently,the flocculation performance of PSAFC was investigated by using kaolin suspension as the target.The results revealed that PSAFC exhibited optimal performance for kaolin suspensions with the removal efficiency more than 95%under the optimal conditions of the initial turbidity of 1439 NTU,the mass concentration of PSAFC of 50 mg/L and pH 10.This investigation offers a novel approach and method for the comprehensive utilization of coal gasification fine slag and the preparation of polymer inorganic flocculants with high-performance.
作者
路绪迁
高桂玥
范雨萱
张志豪
申婷婷
孙静
LU Xuqian;GAO Guiyue;FAN Yuxuan;ZHANG Zhihao;SHEN Tingting;SUN Jing(School of Environmental Science and Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China)
出处
《齐鲁工业大学学报》
CAS
2024年第5期1-10,共10页
Journal of Qilu University of Technology
基金
国家自然科学基金项目(21908118)
国家级大学生创新创业训练计划项目(202110431079)
生物基材料与绿色造纸国家重点实验室项目(齐鲁工业大学(山东省科学院))(ZZ20210124)。
