Adsorption of Oxy-Anions in the Teaching Laboratory: An Experiment To Study a Fundamental Environmental Engineering Problem
Adsorption of Oxy-Anions in the Teaching Laboratory: An Experiment To Study a Fundamental Environmental Engineering Problem
复制标题
教学实验室中氧阴离子的吸附：研究基本环境工程问题的实验
DOI：
10.1021/ed300220d
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发表时间：
2014
影响因子：
3
通讯作者：
D. Weiss
中科院分区：
文献类型：
--
作者：
M. D'Arcy;Florence Bullough;C. Moffat;E. Borgomeo;M. Teh;R. Vilar;D. Weiss
合成和测试用于去除环境问题氧阴离子的双复合吸附剂是研究型大学的重要议程。在这里，我们提出了一个实验室模块成功地开发了帝国理工学院伦敦，介绍了先进的本科生在工程（化学，土木，地球）和科学（化学，材料，地球科学）的几个基本原则与这个研究领域在一个简单的，引人入胜的和安全的方式。这包括（i）无机双复合吸附剂的合成，（ii）吸附-去除过程的评价，以及（iii）吸附物的分析;所有这些都得到了理论的支持。我们设计了一个实验，使用磷酸盐含氧阴离子和铁-钛氧化物双复合吸附剂，这是简单的合成。在pH 5和9下测试和评估了不同浓度磷酸盐溶液的吸附。利用紫外-可见分光光度法分析了平衡时的磷酸盐浓度，绘制了吸附等温线，并...
Synthesizing and testing bicomposite adsorbents for the removal of environmentally problematic oxy-anions is high on the agenda of research-led universities. Here we present a laboratory module successfully developed at Imperial College London that introduces the advanced undergraduate student in engineering (chemical, civil, earth) and science (chemistry, materials, earth science) to several fundamental principles associated with this research area in a simple, engaging and safe way. This includes (i) the synthesis of inorganic bicomposite sorbents, (ii) the evaluation of the adsorption–removal process, and (iii) the analysis of the sorbate; all underpinned by theory. We devise an experiment using phosphate oxyanions and an iron–titanium oxide bicomposite sorbent, which is simple to synthesize. The adsorption of phosphate solutions of varying concentration is tested and assessed at pH 5 and 9. Phosphate concentrations at equilibrium are analyzed using UV–vis spectroscopy to plot adsorption isotherms and ...