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摘要：环丙沙星属于氟 喹诺 酮类药品 中第 二代 药物化疗合成抗生素。这些药品进入世界水系统通过各种渠道如医院污水，生活污水，从工业制药厂排放的废水。环丙沙星进入水体能够使得污水处理厂内的污泥细菌的抗药性得到提高。目前也没有相关对于抗生素排放的规定，所以当环丙沙星耐药菌和低浓度污水处理厂污泥释放到环境中，会出现潜在的环境危害。43263
本文以海藻酸钠，氧化石墨烯为原料，分别制作两者结合以及海藻酸钠的水凝胶和气凝胶为吸附剂，研究对于环丙沙星的吸附性能。得到了如下主要结论：
通过吸附动力学的研究，可以得出水凝胶比气凝胶到达吸附平衡时间的时间要长，但是水凝胶的吸附能力大于气凝胶，且加入GO后凝胶的吸附容量提高了6至8倍。通过吸附等温线的研究，首先看出吸附等温线符合Langmuir模型，根据最大吸附容量比较，水凝胶略高于气凝胶。从pH由酸到碱的增加的研究得出，水凝胶在pH值增大时，吸附容量先增大后减小，而气凝胶是一直增大。从离子强度的研究表明，高浓度的环境下，水凝胶不具有好的耐受性，容易破损，而气凝胶具有较好的耐受性。从重金属的去除来看，水凝胶的吸附容量略大于气凝胶，加入了GO使得吸附容量提高了2至3倍。
毕业论文关键词：海藻酸钠；氧化石墨烯；吸附；环丙沙星
Study on the adsorption properties of three dimensional alginate graphene oxide to ciprofloxacin
Abstract：Ciprofloxacin is a chemotherapy second generation fluoroquinolones synthetic antibiotics. These drugs enter the world water system through a variety of channels such as hospital sewage, domestic sewage, waste water discharged from the industrial pharmaceutical plant. Ciprofloxacin into the water body can make the sewage treatment plant sludge bacteria resistance to be improved. At present, there is no relevant provisions for the discharge of antibiotics, so when the release of ciprofloxacin resistant bacteria and low concentration of sewage treatment plant sludge to the environment, there will be potential environmental hazards.
In this paper, sodium alginate, graphene oxide as raw materials, respectively, the preparation of the two combined with sodium alginate hydrogel and gel as an adsorbent for the adsorption of ciprofloxacin. The main conclusions are as follows:
By adsorption kinetics study, it can be concluded that the hydrogels than aerogel reaching the adsorption equilibrium time of time to be long, but the adsorption capacity of hydrogels greater than aerogels and added go after the adsorption capacity of the gel increased 6 to 8 times. Through the study of adsorption isotherms, we first found that the Langmuir model was consistent with the maximum adsorption capacity, and the hydrogel was slightly higher than that of the air. From the increase of pH from acid to alkali, it was found that the adsorption capacity increased first and then decreased with the increase of pH value. The study of ionic strength showed that the hydrogel was not well tolerated and easily damaged under high concentration. In the removal of heavy metals, the adsorption capacity of the hydrogel was slightly larger than that of the air gel, and the adsorption capacity was increased by 2 to 3 times by the addition of GO.
Keywords: Sodium alginate, graphene oxide, adsorption, ciprofloxacin
目录
1 绪论 1
1.1 新型污染物的出现和危害 1
1.1.1 抗生素带来的细菌耐药性危害1
1.1.2 抗生素带来的环境危害1
1.2 吸附剂对水中主要含有的抗生素的作用 2
1.2.1 海藻酸钠及其复合材料2
1.2.2 石墨烯及其复合材料 3
1.3 选题依据与研究方法 5