{"title":"Kinetic and Thermodynamic Analysis of the Adsorption of Methylene Blue onto Biochar","authors":"James Doble, Grace Wilson and Jacob W. Wainman*, ","doi":"10.1021/acs.jchemed.3c00518","DOIUrl":null,"url":null,"abstract":"<p >Millions of people do not have access to clean drinking water; thus, cost-efficient water treatment systems are vital. Chemists, environmentalists, technicians, and engineers will be the professionals making breakthroughs in this industry. This laboratory experiment aims to introduce undergraduate students to the removal of pollutants from water using biochar. Specifically, the study explores the kinetics and thermodynamics of methylene blue adsorption onto biochar using UV–vis absorption spectroscopy. These general chemistry concepts can readily be observed in real time, as the blue color of the methylene blue solution decreases as it adsorbs on biochar. Students in a pilot course have shown their ability to relate thermodynamics and kinetics to the reaction mechanism in the form of a postlaboratory report.</p>","PeriodicalId":43,"journal":{"name":"Journal of Chemical Education","volume":"100 10","pages":"4040–4046"},"PeriodicalIF":2.5000,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Chemical Education","FirstCategoryId":"92","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.jchemed.3c00518","RegionNum":3,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Millions of people do not have access to clean drinking water; thus, cost-efficient water treatment systems are vital. Chemists, environmentalists, technicians, and engineers will be the professionals making breakthroughs in this industry. This laboratory experiment aims to introduce undergraduate students to the removal of pollutants from water using biochar. Specifically, the study explores the kinetics and thermodynamics of methylene blue adsorption onto biochar using UV–vis absorption spectroscopy. These general chemistry concepts can readily be observed in real time, as the blue color of the methylene blue solution decreases as it adsorbs on biochar. Students in a pilot course have shown their ability to relate thermodynamics and kinetics to the reaction mechanism in the form of a postlaboratory report.
期刊介绍：
The Journal of Chemical Education is the official journal of the Division of Chemical Education of the American Chemical Society, co-published with the American Chemical Society Publications Division. Launched in 1924, the Journal of Chemical Education is the world’s premier chemical education journal. The Journal publishes peer-reviewed articles and related information as a resource to those in the field of chemical education and to those institutions that serve them. JCE typically addresses chemical content, activities, laboratory experiments, instructional methods, and pedagogies. The Journal serves as a means of communication among people across the world who are interested in the teaching and learning of chemistry. This includes instructors of chemistry from middle school through graduate school, professional staff who support these teaching activities, as well as some scientists in commerce, industry, and government.
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