alexa Acid-Base Properties of the Adsorption of Synthetic Dye
ISSN: 2161-0525

Journal of Environmental & Analytical Toxicology
Open Access

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Research Article

Acid-Base Properties of the Adsorption of Synthetic Dyes from Solutions

Rada-Mayya Kostadinova, Gabriela Sikorska, Michelle Naidoo and Abel E Navarro*
Science Department, Borough of Manhattan Community College, City University of New York, NY, USA
Corresponding Author : Abel E Navarro
Science Department, Borough of Manhattan Community College
City University of New York, NY, USA
Tel: +001-212-220-8000
Fax: +212-748-8929
E-mail: [email protected]
Received June 30, 2014; Accepted September 08, 2014; Published September 10, 2014
Citation: Kostadinova RM, Sikorska G, Naidoo M, Navarro AE (2014) Acid-Base Properties of the Adsorption of Synthetic Dyes from Solutions. J Environ Anal Toxicol 4:240. doi: 10.4172/2161-0525.1000240
Copyright: © 2014 Kostadinova RM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


The presence of synthetic dyes is often underestimated in environmental protection. However, it has been demonstrated the impact of colored compounds in ecology and human health. Green tea (GT) and peppermint (PM) tea bag wastes were used as potential adsorbents of dyes from aqueous solutions to evaluate the effect of pH on the adsorption. Basic yellow 57, basic blue 99 and crystal violet were chosen as model dyes due to their widespread use in the industry. Dye solutions at different pH values were placed in contact with the adsorbents in batch experiments at room temperature. Results indicate that crystal violet is totally removed from the solution by the adsorbents (100% removal), followed basic blue 99 and basic yellow. PM reports the highest dye removal. Our data was compared to recently published reports, indicating their potential applicability to real wastewaters, as it is optimum at neutral pH values. These results demonstrate that these materials are excellent and cost-effective candidates for the removal of dye pollutants from contaminated solutions.


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