摘要
本论文合成了 3 种不同凝胶球(冻干SA、烘干SA/CTS、冻干SA/CTS),使用扫描电子显微镜(SEM)、傅里叶红外光谱(FTIR)技术对其进行了表征,以水体中Pb2+为吸附对象,研究了 3 种凝胶球的吸附性能.结果表明,冻干SA/CTS具有完整的球形结构,对Pb2+具有良好的吸附效果,影响冻干SA/CTS吸附Pb2+效果的最佳条件为:pH值为 5、投加量为 0.15g·L-1,吸附过程符合准二级动力学,吸附行为符合Freundlich模型,理论最大吸附量为 251.36mg·g-1,且冻干SA/CTS复合凝胶球的重复使用性能良好.
Abstract
In this paper,three kinds of gel spheres(freeze-dried SA,dried SA/CTS and freeze-dried SA/CTS)were synthesized and the structure and morphology of the gel spheres was characterized by SEM and FTIR.The adsorption properties of the three gel spheres were studied with Pb2+in water as the adsorption object.The results show that freeze-dried SA/CTS has a complete spherical structure and good adsorption effect on Pb2+.The optimal pH value that affects the adsorption effect of freeze-dried SA/CTS on Pb2+is 5 and the dosage is 0.15g·L-1.The adsorption process conforms to the quasi-second-order kinetics and the adsorption behavior conforms to the Freundlich model.The theoretical maximum adsorption capacity is 251.36mg·g-1,and the freeze-dried SA/CTS composite gel sphere has good reuse performance.
基金项目
贵州省高等学校农业资源与环境研究重点实验室项目(黔教技[2023]025)
贵州省高等学校多孔材料与绿色催化创新团队(黔教技[2023]086号)
&&(安市科平[2023]5号)
NETL
NSTL
万方数据