碱渣基地聚物制备及其吸附除磷性能研究  

Preparation of Soda Residue-Based Geopolymer and Phosphorus Removal Performance

作　　者：王强[1,2] 宋雅然 郭浩喆 张佰发 玉婷 袁鹏 Wang Qiang;Song Yaran;Guo Haozhe;Zhang Baifa;Yu Ting;Yuan Peng(CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials,Guangzhou Institute of Geochemistry,Institutions of Earth Science,Chinese Academy of Sciences,Guangzhou,Guangdong 510640;University of Chinese Academy of Sciences,Beijing 100049;Institute of Resources Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou,Guangdong 510650;School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou,Guangdong 510006)

机构地区：[1]中国科学院广州地球化学研究所,中国科学院矿物学与成矿学重点实验室/广东省矿物物理与材料研究开发重点实验室,广东广州510640 [2]中国科学院大学,北京100049 [3]广东省科学院资源利用与稀土开发研究所,广东广州510650 [4]广东工业大学土木与交通工程学院,广东广州510006

出　　处：《非金属矿》2022年第3期76-81,共6页Non-Metallic Mines

基　　金：国家自然科学基金(41972045);广东省基础与应用基础研究基金(2021A1515110941)。

摘　　要：以偏高岭土和工业废弃物碱渣为原料,制备碱渣基地聚物除磷材料。通过等温吸附试验和动态吸附试验,探究了该材料的除磷性能。采用X射线衍射、傅里叶变换红外光谱、扫描电子显微镜等分析了材料在除磷反应前后的物相组成、元素化学环境和微观形貌。结果表明,碱渣基地聚物对磷酸根的静态吸附符合Langmuir吸附模型,理论最大吸附量为56.45 mg/g。地聚反应生成的无定形铝硅酸钙是除磷的主要活性成分,该成分可释放出氢氧根,促进钙离子与磷酸根形成难溶磷酸氢钙,从而达到除磷效果。In this study,phosphorus removal materials of soda residue-based geopolymer were prepared from industrial waste soda residue and metakaolin.The phosphorus removal performance of the material was investigated by isothermal adsorption experiments and dynamic adsorption experiments.X-ray diffraction,Fourier transform infrared spectroscopy and scanning electron microscopy were used to analyze the phase compositions,elemental chemical environment and microscopic morphology of the materials before and after the phosphorus removal reaction.The results showed that the static adsorption of phosphate by soda residue-based geopolymer was in accordance with the Langmuir adsorption model,with a theoretical maximum adsorption capacity of 56.45 mg/g.The amorphous calcium aluminosilicate produced by the geopolymerization was the main active component for phosphorus removal,which could release hydroxide and promote the formation of insoluble calcium hydrogen phosphate from calcium ions and phosphate,thus achieving the phosphorus removal effect.

关 键 词：碱渣 偏高岭土 地质聚合反应 除磷 固废利用 

分 类 号：TQ424[化学工程]