茶叶吸附性能研究
2021-08-30史小丽丁丽李敏张洁
史小丽 丁丽 李敏 张洁

摘要 在介绍茶叶改性处理方法的基础上,对茶叶吸附、去除水体物质、离子进行综述;介绍了温度、pH、初始浓度、茶叶投加量等茶叶吸附性能的主要影响因素,以及通过扫描电镜、比表面分析、傅立叶变换红外光谱(FT-IR)分析及热力学、动力学方程模型进行的吸附机理研究,较为全面地介绍了茶叶吸附性能的研究以及未来的研究方向。
关键词 茶叶;吸附性能;影响;机理
中图分类号 X 703.1 文献标识码 A
文章编号 0517-6611(2021)16-0061-03
doi:10.3969/j.issn.0517-6611.2021.16.017 开放科学(资源服务)标识码(OSID):
Study on the Adsorption Performance of Tea
SHI Xiao-li1,2,3,4,DING Li1,2,3,4,LI Min1,2,3,4 et al (1.Xinjiang Academy of Environmental Protection Science, Urumqi, Xinjiang 830011;2. Xinjiang Key Laboratory for Environmental Pollution Monitoring and Risk Warning, Urumqi, Xinjiang 830011;3. Xinjiang Engineering Technology Research Center for Cleaner Production,Urumqi, Xinjiang 830011;4. Junggar Desert-oasis Ecotone Station for Scientific Observation and Research of National Environmental Protection, Urumqi, Xinjiang 830011)
Abstract On the basis of introducing the modification treatment methods of tea, the adsorption and removal of water substances and ions by tea were summarized. The main influencing factors of tea adsorption performance, such as temperature, pH, initial concentration and tea dosage, were introduced and the adsorption mechanism was studied by scanning electron microscope, specific surface analysis, Fourier transform infrared spectroscopy (FT-IR) analysis and thermodynamic and kinetic equation model. The research on the adsorption properties of tea and the future research directions were introduced in this paper.
Key words Tea;Adsorption performance;Influence;Mechanism
隨着目前水资源利用量的增大,污水产生量也随之骤增。如何处理污水使其资源化显得尤为重要,既可解决大量污水的排放去向问题,又节约了有限的水资源。随着人们环保意识的增强,污染治理方法也在与时俱进,不再单一追求对目标污染物的高处理率,那些既可废物资源化利用、又可减少或避免二次污染的治理方法备受关注。吸附法因其净化效果好、可再生、不产生二次污染等优点广泛应用于水体污染治理领域,废弃茶叶作为众多生物吸附剂的一种,对吸附污染物具有经济可行、吸附效果好等优点,因而废弃茶叶吸附水污染物技术应用前景广阔。笔者主要对茶叶对水体污染物吸附性能的影响因素、研究方法等进行综述,探讨该领域实际应用存在的主要问题及未来研究方向。
1 茶叶的预处理及改性
对茶叶进行冲洗、漂洗、烘干、磨碎等预处理工序是试验的必备程序。部分实验者直接使用预处理后的原茶进行试验[1-5],更多研究者会对茶叶进行改性后再进行试验,对茶叶改性的作用一般是增强茶叶的吸附作用。……
