Photocatalytic Degradation of Tetracyclines by TiO2/Molecular Sieves and Assessment of Residual Antibacterial Activity

Abstract

四环素类抗生素广泛用于人类医疗、畜牧业、渔业等,当进入人体或动物体后,主要以未代谢的原型排入污水系统或直接排入水环境。医院、药厂、牧场和渔场排污中常常含有四环素类抗生素。另外,由于四环素类抗生素的稳定性和抗菌特性,污水处理厂的传统生物处理无法将其处理干净。环境中存在抗生素容易引起微生物的抗药性,对环境健康和人类健康都构成严重威胁。为了处理污水中的抗生素,很多高级氧化法发展起来,例如将纳米TiO2负载到其他材料上的复合光催化剂得到发展。其中,分子筛是一种吸附性能很好地材料,能很好地负载TiO2,同时具有吸附性能和光催化性能。 本文将TiO2负载于微孔分子筛ZSM-5和中孔分子筛MCM-41,用...Tetracycline antibiotics are widely used in human medicine, animal husbandry, fishery, etc. After entering the human body or animal body, tetracycline antibiotics are discharged into the sewage system or directly into the water environment mainly as prototype without metabolism. The sewage of hospitals, pharmaceutical factories, pastures and fishing grounds often contains tetracycline antibiotics....学位:理学硕士院系专业:环境与生态学院_环境科学学号:3312014115170

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