Adsorption of ethidium bromide from aqueous solution onto nutraceutical industrial fennel seed spent: Kinetics and thermodynamics modeling studies

Dye pollutants from research laboratories are one of the major sources for environmental contamination. In the present study, a nutraceutical industrial fennel seed spent (NIFSS) was explored as potential adsorbent for removal of ethidium bromide (EtBr) from aqueous solution. The adsorbent was chara...

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Bibliographic Details
Published in:International journal of phytoremediation 2018-09, Vol.20 (11), p.1075-1086
Main Authors: Sulthana, Razia, Taqui, Syed Noeman, Zameer, Farhan, Syed, Usman Taqui, Syed, Akheel Ahmed
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Adsorption studies
Aqueous solutions
Biodegradation, Environmental
Contamination
Data processing
Dietary Supplements
Diffusion
Diffusion effects
Dyes
Enthalpy
Entropy
Ethidium
Ethidium bromide
Foeniculum
Fourier transforms
Free energy
Functional foods & nutraceuticals
Gibbs free energy
Hydrogen-Ion Concentration
Infrared spectroscopy
Kinetics
Laboratories
nutraceutical industrial fennel seed spent
Parameters
Pollutants
Pollution sources
Scanning electron microscopy
Thermodynamics
Water Pollutants, Chemical - chemistry
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Summary:Dye pollutants from research laboratories are one of the major sources for environmental contamination. In the present study, a nutraceutical industrial fennel seed spent (NIFSS) was explored as potential adsorbent for removal of ethidium bromide (EtBr) from aqueous solution. The adsorbent was characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Through batch experiments, the operating variables like initial dye concentration, adsorbent dosage, temperature, contact time, and pH were optimized. Equilibrium data were analyzed using three number of two-parameter and six number of three-parameter isotherm models. The adsorption kinetics was studied using pseudo-first order and pseudo-second order. The diffusion effects were studied by film diffusion, Webber-Morris, and Dumwald-Wagner diffusion models. The thermodynamic parameters; change in enthalpy (ΔHº), entropy (ΔSº), and Gibbs free energy (ΔGº) of adsorption system were also determined and evaluated.
ISSN:1522-6514
1549-7879
DOI:10.1080/15226514.2017.1365331