纳米氧化镁/纤维素复合微球吸附水中阿莫西林  

Nano-magnesia/Cellulose Composite Microspheres for Adsorption Amoxicillin in Water

作　　者：麻灿 戴学海 吴锶美 杨金辉 罗晓刚[2] MA Can;DAI Xue-hai;WU Si-mei;YANG Jin-hui;LUO Xiao-gang(Huazhong Agricultural University Affiliated School, Wuhan 430070, China;School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430074, China)

机构地区：[1]华中农业大学附属学校,湖北武汉430070 [2]武汉工程大学化工与制药学院,湖北武汉430074

出　　处：《纤维素科学与技术》2019年第2期46-51,共6页Journal of Cellulose Science and Technology

基　　金：国家自然科学基金资助项目(51303142)

摘　　要：以天然高分子纤维素作为载体填充纳米氧化镁,采用滴落固化技术制得纳米氧化镁纤维素基复合吸附剂,用扫描电镜和X-射线衍射对其进行表征,研究了吸附时间、吸附剂用量、溶液的pH值等因素对阿莫西林吸附效果的影响并进行解吸研究。实验结果表明,对初始浓度为60mg/L的阿莫西林溶液,在pH=3的条件下,采用6g的吸附剂的吸附效果最佳,Langmuir最大吸附容量可达到6.26mg/g,吸附过程符合伪二级动力学方程和Langmuir型等温吸附方程。重复使用8次仍具有较好的再吸附能力,具有较好的工业应用前景。An effective and recyclable adsorbent for amoxicillin removal from aqueous system was fabricated via an optimal extrusion dropping technology from NaOH/urea aqueous solution. MgO nanoparticles used as fillers made the composite adsorbent have effective adsorption performance of amoxicillin. Their structure and properties were investigated using scanning electron microscopy and X-ray diffraction. Moreover the effects of contact time, absorbent dosage, pH and adsorption isotherms on the sorption behaviour were studied. The kinetics of adsorption of amoxicillin was discussed by using two kinetic models, the pseudo-first-order model and the pseudo-second-order model. Experimental results were also analyzed by the Langmuir and Freundlich isotherm equations at different temperatures. The reuseabilty of the adsorbent was also studied.

关 键 词：纳米氧化镁 纤维素 阿莫西林 吸附 解吸 

分 类 号：R636.1[医药卫生—外科学]