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ERIC Number: EJ1119637
Record Type: Journal
Publication Date: 2016-Nov
Pages: 4
Abstractor: As Provided
ISSN: ISSN-0021-9584
Salicylic Acid and 4-Nitroaniline Removal from Water Using Magnetic Biochar: An Environmental and Analytical Experiment for the Undergraduate Laboratory
Karunanayake, Akila G.; Dewage, Narada Bombuwala; Todd, Olivia Adele; Essandoh, Matthew; Anderson, Renel; Mlsna, Todd; Mlsna, Deb
Journal of Chemical Education, v93 n11 p1935-1938 Nov 2016
Adsorption studies of salicylic acid (SA) and 4-nitroaniline (4NA) from aqueous solutions were performed with magnetic biochar (MBC) in order to train students in analytical techniques such as standard calibration curves, UV-vis spectrophotometry, and chemical separations within the context of wastewater purification. Analysis of samples purified by MBC enhances student understanding of water quality and the importance of potable water production, a growing worldwide concern. MBC was prepared by iron oxide precipitation onto the biochar surface using an aqueous Fe[superscript 3]+/Fe[superscript 2]+ solution followed by NaOH treatment. MBC effectiveness in removing organic contaminants from water was evaluated using UV-vis spectroscopy, Beer's law, and a comparison to standard calibration curves while determining the concentrations of two contaminant compounds. The use of MBC to remove organic contaminants in water highlights the effectiveness of this technique for wastewater remediation and prompt discussion of water quality concerns with undergraduate students.
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:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: National Science Foundation (NSF)
Authoring Institution: N/A
Grant or Contract Numbers: CHE1543490; CHE0955723