Radio-lytic degradation of reactive dyes in aqueous solution: comparative analysis using gamma/H2O2 and UV/H2O2 processes
Author:
Hussain Mazhar1, Muneer Majid1, Sarfraz Sadaf2, Hussain Shabbir3, Alzahrani Fatimah M.4, Tariq Muhammad5, Iqbal Muhammad1, Iqbal Munawar67, Nazir Arif7, Hussain Amjad8
Affiliation:
1. Department of Chemistry , GC University Faisalabad , Faisalabad , Pakistan 2. Department of Chemistry , Lahore Garrison University , DHA Phase VI , Lahore , Pakistan 3. Institute of Chemistry, Khawaja Fareed University of Engineering and Information Technology , Rahim Yar Khan 64200 , Pakistan 4. Department of Chemistry, College of Sciences , Princess Nourah bint Abdulrahman University , P.O. Box 84428 , Riyadh 11671 , Saudi Arabia 5. Division of Inorganic Chemistry , Institute of Chemical Sciences , Bahauddin Zakariya University , Multan , Pakistan 6. Department of Chemistry , Division of Science and Technology, University of Education , Lahore , Pakistan 7. Department of Chemistry , The University of Lahore , Lahore , Pakistan 8. Institute of Chemistry , University of Okara , Okara - 56300 , Punjab , Pakistan
Abstract
Abstract
In this study, gamma/H2O2 and UV/H2O2 treatment procedures were used for the degradation of five dyes including reactive red PB (R-24), reactive orange P3LN (O-13), reactive turquoise blue PG (B-21), reactive golden yellow H2R (O-12) and reactive lemon yellow C4G L (Y-15). The dye samples of 50 or 100 ppm concentration were treated with either gamma (0–10 kGy) or UV radiations in the presence/absence of H2O2. This treatment resulted in the elimination of chromophoric groups and degradation of dye molecule into low molecular weight fragments. The H2O2 treatment caused the generation of hydroxyl radicals which degraded the pollutants non-selectively by means of chain oxidation process. The treatment effectiveness was increased when H2O2, which was used in conjunction with UV or gamma radiation and the treated water quality, improved significantly. However, the gamma/H2O2 treatment was found to be the more effective and efficient method as compared to the UV/H2O2 treatment for the removal of dyes from the water.
Funder
Princess Nourah bint Abdulrahman University
Publisher
Walter de Gruyter GmbH
Subject
Physical and Theoretical Chemistry
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