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Trends in Applied Sciences Research

Year: 2014 | Volume: 9 | Issue: 6 | Page No.: 303-311
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Authors

Arsalan Jamshidi

Mohammad Rafiee

Mahsa Jahangiri Rad

Keywords

Research Article

Adsorption Behavior of Reactive Blue 29 Dye on Modified Nanoclay

Arsalan Jamshidi, Mohammad Rafiee and Mahsa Jahangiri Rad
The present study was conducted to evaluate the feasibility of modified nanoclay for reactive blue 29 dye removal from saqueous solution. The nature and morphology of the sorbent were characterized by Fourier Infrared Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM) analysis. Batch adsorption studies were performed as a function of contact time, adsorbent dosage, temperature and pH. Montmorillonite (MMT) was modified by a facile and one-step procedure with diethylenetriamine (DETA). The equilibrium adsorption data were analyzed by Langmuir and Freundlich isotherms. The DETA-MMT showed a high uptake capacity in room temperature and 84% dye removal was observed with 6 g L-1 of adsorbent, in only 2 min. The results revealed that freundlich isotherm fit the experimental results well. Standard free energy (ΔGo), standard enthalpy (ΔHo) and standard enthropy (ΔSo) were calculated by the data obtained from langmuir equation at different temperatures. All ΔGo and ΔHo values were negative indicating that the reactive blue adsorption was feasible and exothermic process.
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