摘要
硅胶与大孔吸附树脂因具有良好的吸附性能被广泛用作吸附材料。本文比较两种吸附材料对藏红T染料的最佳吸附条件及动力学、等温线参数的区别。结果表明:硅胶的最佳吸附条件是m=200 mg、T=25℃、pH=5.5、t=30 min,对C0=100 mg/L藏红T染料的去除率与吸附容量达到61.42%、4.61 mg/g,吸附过程符合拟一级动力学模型及Freundlich模型;大孔吸附树脂的最佳吸附条件是m=50 mg、T=30℃、pH=8.0、t=90 min,对C0=3000 mg/L的藏红T染料的去除率与吸附容量达到46.65%、419.81 mg/g,吸附过程符合拟二级动力学模型、Langmuir模型。除此之外,溶液中存在无机盐,如K 3PO 4·3H 2O、K 2HPO 4、CaCl 2可以促进硅胶与大孔吸附树脂对藏红T染料的吸附作用。
Silica gel and macroporous adsorption resin are widely used as adsorption materials because of their good adsorption properties.In this paper,the optimum adsorption conditions,kinetics and isotherm parameters of safranine T dye on the two adsorbents were compared.The results show that:The optimum adsorption conditions of silica gel are m=200mg,t=25℃,pH=5.5,t=30min,the removal rate and adsorption capacity of safranine T dye with C 0=100mg/L reach 61.42%and 4.61mg/g,and the adsorption process conforms to the pseudo first-order kinetic model and Freundlich model;as for macroporous adsorption resin,the optimum adsorption conditions of silica gel are m=50mg,t=30℃,pH=8.0,t=90min,the removal rate and adsorption capacity of safranine T dye with C0=3000mg/L reach 46.65%and 419.81mg/g,and the adsorption process conforms to the pseudo second order kinetic model and Langmuir model.Besides,inorganic salts such as K 3PO 4·3H 2O,K 2HPO 4 and CaCl 2 in the solution can promote the adsorption of safranine T dye by silica gel and macroporous adsorption resin.
作者
姚飞燕
徐湘薇
刘金苓
张云
胡云峰
Yao Feiyan;Xu Xiangwei;Liu Jinling;Zhang Yun;Hu Yunfeng(CAS Key Laboratory of Tropical Marine Bio-resources and Ecology,Guangdong Key Laboratory of Marine Materia Medical,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China;Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,China;Guangdong University of Education,School of biological and Food Engineering,Guangzhou 510303,China;Equipment Public Service Center,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China)
出处
《环保科技》
2023年第1期7-16,64,共11页
Environmental Protection and Technology
基金
南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项(GML2019ZD0406),国家自然科学基金(21302199)。
关键词
藏红T
硅胶
大孔吸附树脂
吸附动力学
吸附等温线
Safranine T
silica gel
macroporous adsorption resin
adsorption kinetics
adsorption isotherm
