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非均相生物质炭吸附降解水中抗生素类有机污染物研究【字数:12835】

2024-11-02 13:15编辑: www.jxszl.com景先生毕设

目录
摘要Ⅲ
关键词Ⅲ
AbstractⅢ
引言
引言1
1抗生素1
1.1抗生素来源 1
1.2抗生素的应用及其残留危害2
1.3抗生素的去除3
2生物质炭3
2.1生物质炭的原料3
2.2生物质炭的制备方法4
2.2.1直接炭化法4
2.2.2活化法4
2.2.3其他活化法 5
3生物质炭在去除水体污染中的应用5
4生物质炭吸附抗生素机理与影响因素5
4.1生物质炭吸附机理5
4.1.1吸附动力学6
4.1.2吸附热力学6
4.2影响生物质炭吸附过程的因素6
4.2.1生物质炭本身特性对吸附过程的影响6
4.2.2环境因子对生物质炭吸附抗生素过程的影响7
5结论与展望8
5.1结论8
5.2展望8
致谢9
参考文献9
非均相生物质炭吸附降解水中抗生素类有机污染物研究
摘要
由于抗生素的泛滥使用,同时加上传统污水处理工艺对抗生素的去除效率低,使得抗生素在环境中频频检出,并且由此导致一系列环境生态问题。吸附法是一种经济有效的去除抗生素的方法。其中由于生物质炭具有制备简单、成本低、吸附效果好等优点,近年来被学者广泛关注。
抗生素的吸附过程是其在环境中迁移转化的重要途径之一。本文从动力学、热力学角度阐述生物质炭对抗生素的吸附机理,分析生物质炭对抗生素吸附过程的影响因素,包括生物质炭本身的特性以及环境条件如pH、温度、离子强度等,试图系统探究生物质炭对抗生素的吸附本质。虽然目前生物质炭对抗生素的吸附研究已较多,但对于生物质炭对抗生素的解吸机理、解吸过程以及生物质炭施用给环境带来的风险等方面的研究还不够完善,今后还需要更进一步的深入研究。
RESEARCH OF ADSORPTION AND DEGRADATION OF ANTIBIOTIC ORGANIC CONTAMINANTS BY HETEROGE *51今日免费论文网|www.jxszl.com +Q: @351916072
NEOUS BIOCHAR IN WATER
ABSTRACT
Due to the widespread use of antibiotics , coupled with the low removal efficiency of antibiotics by traditional sewage treatment processes, antibiotics are frequently detected in the environment, which leads to a series of environmental ecological problems. Adsorption is an economical and effective method to remove antibiotics. Among them, biochar has attracted extensive attention in recent years due to its advantages of simple preparation, low cost and good adsorption effect.
The adsorption process of antibiotics is one of the important ways for their migration and transformation in the environment. In this paper, the adsorption mechanism of biochar on antibiotics is expounded from the perspective of dynamics and thermodynamics, and the influencing factors of biochar on the adsorption process of antibiotics are analyzed, including the characteristics of biochar itself and environmental conditions such as pH, temperature, ionic strength, etc., in an attempt to systematically explore the adsorption nature of biochar on antibiotics. Although there have been many researches on the adsorption of antibiotics by biochar, the researches on the desorption mechanism, desorption process and environmental risks caused by biochar application are not perfect enough, and further indepth researches are needed in the future.

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