Journal
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
Volume 42, Issue 2, Pages 341-349Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2010.05.010
Keywords
Zero valent metallic iron; Advanced photo-Fenton process; Ammonium persulfate; Bismarck Brown; Effect of inorganic anions; Kinetic studies
Categories
Funding
- UGC [20072010]
Ask authors/readers for more resources
The present research work has demonstrated the usage of zero valent metallic iron (ZVMI) in the photo-Fenton process under UV light as a promising and novel technique for the complete degradation of di azo dye Bismarck Brown (BB) in aqueous medium. The influence of various reaction parameters like concentration of oxidants/dye/iron powder and pH of the solution was investigated and optimum conditions are reported. Ammonium persulfate (APS) proved to be better oxidant in comparison with hydrogen peroxide for enhancing the degradation rate and effectively inhibited the precipitation of iron hydroxides at higher dosages of iron powder which is attributed to the acidity provided by APS which is crucial for Fenton process. The rate constant for the kinetics of degradation using various oxidation processes follows the order: Fe(0)/APS/UV > Fe(0)/H(2)O(2)/UV > Fe(0)/APS/dark > Fe(0)/UV > Fe(0)/H(2)O(2)/dark > Fe(0)/dark > H(2)O(2)/UV > APS/UV. The effects of inorganic anions that are commonly found in the industrial effluents like NaCl, KNO(3), Na(2)SO(4), Na(2)CO(3) and NaHCO(3) at different concentrations on the degradation rate were studied in detail. The degradation was followed by UV-vis and GC-MS techniques. (C) 2010 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available