ERIC Number: EJ1046301
Record Type: Journal
Publication Date: 2014-Nov
Abstractor: As Provided
Reference Count: 20
Removal of Aromatic Pollutant Surrogate from Water by Recyclable Magnetite-Activated Carbon Nanocomposite: An Experiment for General Chemistry
Furlan, Ping Y.; Melcer, Michael E.
Journal of Chemical Education, v91 n11 p1966-1970 Nov 2014
A general chemistry laboratory experiment using readily available chemicals is described to introduce college students to an exciting class of nanocomposite materials. In a one-step room temperature synthetic process, magnetite nanoparticles are embedded onto activated carbon matrix. The resultant nanocomposite has been shown to combine the adsorption ability of the activated carbon and the magnetic properties of the magnetite nanoparticles, enabling its application as a fast, effective, low-cost, and recyclable aromatic water pollutant adsorbent. This quality is illustrated by its rapid removal of the surrogate "pollutants", made of several dyes in the Fisher universal indicator, within 2-3 min. A successful "pollutant" removal is indicated by the absence of the rainbow colors because of the presence of the "pollutants" in the "polluted" water when different quantities of an acid or a base are added. The nanocomposite's reusability as the "pollutant" adsorbent is demonstrated after its used surface is regenerated using ethanol as the extracting solvent. The exercise allows students to (i) gain awareness of timely environmental issues; (ii) be exposed to the modern field of nanoscience; and (iii) appreciate the roles new and advanced materials play in keeping our water clean. Students have fun working in the lab and find the experience interesting and motivating. The experiment is also suitable for advanced high school students.
Descriptors: Science Instruction, Water Pollution, Science Experiments, Secondary School Science, High Schools, College Science, Undergraduate Study, Chemistry, Environmental Education, Science Laboratories, Magnets, Molecular Structure, Technology, Laboratory Experiments
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: firstname.lastname@example.org; Web site: http://pubs.acs.org/jchemeduc
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Secondary Education; High Schools; Higher Education; Postsecondary Education
Authoring Institution: N/A