[1]阳春,王瀚,王琦,等.氨基改性磁性介孔硅对磺胺类抗生素的吸附研究[J].中国给水排水,2022,38(23):123-128.
　YANGChun,WANG Han,WANGQi,et al.Amino-modified Magnetic Mesoporous Silica for Adsorption of Sulfonamide Antibiotics[J].China Water & Wastewater,2022,38(23):123-128.
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氨基改性磁性介孔硅对磺胺类抗生素的吸附研究

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第23期 页码: 123-128 栏目: 出版日期: 2022-12-01
Title:
Amino-modified Magnetic Mesoporous Silica for Adsorption of Sulfonamide Antibiotics
作者:
阳春， 王瀚， 王琦， 胡碧波
（重庆大学 环境与生态学院，重庆 400045）
Author(s):
YANG　Chun， WANG Han， WANG　Qi， HU　Bi-bo
（College of Environment and Ecology， Chongqing University， Chongqing 400045， China）
关键词:
磁性介孔硅;  氨基改性;  磺胺类抗生素;  吸附
Keywords:
magnetic mesoporous silica;  amino modification;  sulfonamide antibiotics;  adsorption
摘要:
为了提高介孔硅材料的吸附性能，通过分析磺胺类抗生素（SAs）理化特性对介孔硅材料的有机功能化改性进行指导，制备了氨基改性磁性介孔硅（AMS），并系统研究了AMS对磺胺类抗生素的吸附效能。与常见吸附材料相比，AMS对磺胺类抗生素具有更高的吸附容量和吸附效率，其对磺胺嘧啶（SDZ）、磺胺对甲氧嘧啶（SMD）和磺胺甲恶唑（SMZ）的最大吸附容量分别为272.39、228.44和300.14 mg/g，吸附过程遵循伪二级动力学模型和Langmuir等温吸附模型，10 min内对上述3 种抗生素的去除率均可以达到90%以上。当pH为8时，AMS能达到最大吸附容量，且该吸附容量与溶液的离子强度呈负相关关系。回收的AMS稳定性较好，且易于从溶液中分离出来。AMS对SDZ、SMD和SMZ的吸附主要通过静电作用和氢键。
Abstract:
To improve the adsorption performance of mesoporous silicon materials, the physicochemical properties of sulfonamide antibiotics (SAs) were analyzed to guide the organic functional modification of mesoporous silicon materials, and amino-modified magnetic mesoporous silica (AMS) was prepared to systematically investigate its performance for sulfonamide antibiotics adsorption. Compared with common adsorbents, AMS showed higher adsorption capacity and efficiency for SAs, and its maximum adsorption capacities for sulfadiazine (SDZ), sulfamethoxine (SMD) and sulfamethoxazole (SMZ) were 272.39 mg/g, 228.44 mg/g and 300.14 mg/g, respectively. The adsorption process followed the pseudo-second-order kinetic model and Langmuir isotherm, and the removal rates of the above three antibiotics reached more than 90% within 10 min. When pH was 8, AMS reached the maximum adsorption capacity, and the adsorption capacity was negatively correlated with the ionic strength of the solution. The recovered AMS was stable and easy to be separated from the solution. The adsorption of SDZ, SMD and SMZ by AMS was mainly achieved through electrostatic attraction and hydrogen bonding.
更新日期/Last Update: 2022-12-01