Modeling sorption of select basic dyes onto alternative materials
Authors
Bredes, Amy
ORCID
Loading...
Other Contributors
Nyman, Marianne
Kilduff, James
Zimmie, T. F.
Kilduff, James
Zimmie, T. F.
Issue Date
2018-05
Keywords
Environmental engineering
Degree
MS
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
Full Citation
Abstract
This study aims to identify and analyze potential alternative sorbents for basic dye removal from effluents. The textile industry releases large volumes of dye containing effluent every year. These dyes are designed to be highly stable and resist degradation, creating a removal challenge. Basic, or cationic, dyes are one of the most toxic classes of dye. One of the most popular methods of dye removal is sorption. Due to the high cost of common sorbents, such as activated carbon, it is necessary to analyze alternative sorbents. The sorption of three different basic dyes (basic blue 9, basic yellow 1, basic red 2) were studied on four sorbents (tea, coffee, banana peel, and AC) in 8-day experiments. AC had the greatest sorption affinity of all three dyes, but reached its sorption capacity at 5,000 mg/L for basic blue 9, 440 mg/L for basic yellow 1, and 480 mg/L for basic red 2. The other sorbents were not found to reach sorption capacity for the concentration levels investigated in this study. The Freundlich isotherm model best represented the obtained experimental data. This model was then used to compare sorption affinity, KF, to various physical chemical characteristics to create predictive models for other basic dyes. These models were also used to determine the most likely primary sorption mechanism for each sorbent; physisorption for AC, ion exchange sorption for tea, coffee, and banana peel.
Description
May 2018
School of Engineering
School of Engineering
Department
Dept. of Civil and Environmental Engineering
Publisher
Rensselaer Polytechnic Institute, Troy, NY
Relationships
Rensselaer Theses and Dissertations Online Collection
Access
Restricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.