宁夏工程技术2024，Vol.23Issue(1)：54-59,64,7.
Al改性SBA-15对水中四环素的吸附行为研究
Study on the Adsorption Behavior of Al-SBA-15 to Tetracycline in Water
摘要
Abstract
In this study,M-SBA-15 mesoporous materials modified with metals such as Al,Fe,Cu and Mn were prepared and their adsorption performance on tetracycline were compared.SEM and N2 adsorption/desorption were used for Al-SBA-15 characterization.The effects of modification time,pH,temperature,mass concentration of tetracycline and other factors on adsorption behavior of Al-SBA-15 to tetracycline were investigated,and the kinetic models,isotherm models and thermodynamic models were used to analyze the adsorption behavior.The results show that Al-SBA-15 has the best adsorption effect on tetracycline,with optimal conditions being an N(Al)∶N(Si)ratio of 0.35,modification time of 3 h,pH of 6.0 and temperature of 298 K.The pseudo-second-order kinetic model is more suitable for describing the adsorption kinetics of Al-SBA-15,and the intra-particle diffusion is not the only rate-determination step.Freundlich model better describes the adsorption behavior of Al-SBA-15 on tetracycline,indicating that the process is mainly a multi-layer adsorption.Thermodynamic analysis shows that the adsorption of Al-SBA-15 is spontaneous and exothermic,and results in decreased disorder.关键词
四环素/Al-SBA-15/吸附行为/吸附动力学/吸附热力学Key words
tetracycline/Al-SBA-15/adsorption behavior/adsorption kinetics/adsorption thermodynamics分类
化学引用本文复制引用
吕俊敏,陈瑶瑶,田彦花,范素兵..Al改性SBA-15对水中四环素的吸附行为研究[J].宁夏工程技术,2024,23(1):54-59,64,7.基金项目
国家重点研发计划项目(2019YFC1904303) （2019YFC1904303）
宁夏科技创新领军人才培养计划(2021GKLRLX15) （2021GKLRLX15）
北方民族大学校级一般科研项目(2023XYZTM03) （2023XYZTM03）
