News Column

Investigators from Division of Environmental Science Report New Data on Chemical Engineering

June 25, 2014

By a News Reporter-Staff News Editor at Journal of Engineering -- Research findings on Chemical Engineering are discussed in a new report. According to news reporting originating from San Luis Potosi, Mexico, by VerticalNews correspondents, research stated, "Agave salmiana bagasse has proved to be a good biosorbent for heavy metal ions in aqueous solutions. However, more information about its chemical structure and the interaction with metal ions remains to be understood."

Our news editors obtained a quote from the research from the Division of Environmental Science, "Raw bagasse and its fractions hemicellulose, cellulose, and lignin were characterized by acid base titrations, Attentuated Total Reflectance Fourier Transform Infrared Spectroscopy and thermogravimetric analysis (TGA), before and after they were tested to remove Cd(II), Pb(II), and Zn(II) from aqueous solution. Oxygen, sulfur, and nitrogen containing groups were identified in both raw bagasse and its fractions. TGA of the exhausted biosorbent demonstrated that Cd(II) and Pb(II) ions shifted the pyrolisis temperature of the neutral detergent fiber (NDF) fraction while Zn(II) decreased it. Carboxylic and strong acid groups were mainly responsible for metal removal. Lignin contributes the most to metal uptake in the NDF adsorption process."

According to the news editors, the research concluded: "Finally, the higher or lower pyrolisis temperature of exhausted NDF fraction was related to decarboxylation reactions and elimination of hydroxyl groups."

For more information on this research see: Chemical and Thermogravimetric Analyses of Raw and Saturated Agave Bagasse Main Fractions with Cd(II), Pb(II), and Zn(II) Ions: Adsorption Mechanisms. Industrial & Engineering Chemistry Research, 2014;53(20):8332-8338. Industrial & Engineering Chemistry Research can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; Industrial & Engineering Chemistry Research -

The news editors report that additional information may be obtained by contacting L.H. Velazquez-Jimenez, Inst Potosino Invest Cient & Tecnol AC, Div Environm Sci, San Luis Potosi 78216, Mexico.

Keywords for this news article include: Mexico, San Luis Potosi, Chemical Engineering, North and Central America

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Source: Journal of Engineering

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