中北大学学报（自然科学版）2025，Vol.46Issue(4)：480-488,9.DOI:10.62756/jnuc.issn.1673-3193.2024.10.0009
超重力法制备Al2O3及其吸附刚果红性能研究
Preparation of Al2O3 by High-Gravity Method and Its Adsorption Performance for Congo Red
摘要
Abstract
Alumina is an ideal material for the treatment of organic dye wastewater due to its excellent adsorption properties.In this study,alumina with large pores and a high specific surface area(332 m2/g)was successfully prepared using an impinging stream-rotating packed bed(IS-RPB).It was observed that factors such as calcination temperature and high-gravity factor significantly influenced the structure of the alumina.The specific surface area of the prepared alumina was significantly increased from 171 m2/g to 332.3 m2/g when the calcination temperature was decreased from 900℃to 500℃.When applied to the adsorption of Congo red dye wastewater,the maximal adsorption capacity reached 800 mg/g,and the removal rate increased by 10%to 99%.The adsorption performance slightly decreased as the pH value of the solution increased from 2 to 8 and showed a cliff-like decrease when exceeding 8.The maximum removal rate was 99.71%;the adsorption process was in accordance with the Langmuir isotherm model,and the correlation coefficient R2L reached 0.999 1.Through comparative analysis,the specific surface area and adsorption capacity of alumina prepared by IS-RPB are better than those prepared by stirred kettle,and the alumina prepared by the former is structurally stable with good reproducibility,which has a greater potential for application in the fields of dye separation and environmental purification.关键词
超重力/撞击流-旋转填料床/氧化铝/刚果红/吸附Key words
high-gravity/impinging stream-rotating packed bed/activated alumina/Congo red/adsorption分类
化学化工引用本文复制引用
付艺婷,袁志国,张雅倩,贾正娜,孔哲..超重力法制备Al2O3及其吸附刚果红性能研究[J].中北大学学报（自然科学版）,2025,46(4):480-488,9.基金项目
山西省自然科学研究面上项目(202203021211098) （202203021211098）
山西省科技成果转化引导专项(202104021301054) （202104021301054）
中北大学研究生科技立项(20231925) （20231925）
