Page 200 - C:\Users\am_se\OneDrive - Higher Education Commission\Desktop\FlipBook\

International Conference on

Recent Trends in Environmental Sustainability

ESCON22/NMsB/39

Oxidative removal of methyl orange dye by using UV-C/H2O2 and UV-C/Tio2
Marryam Qamar1, Dr Muhammad Zakir Ali1*

1Department of Environmental Sciences, COMSATS University Islamabad, Vehari-
Campus, 61100 Pakistan
Correspondence: Zakirali@cuivehari.edu.pk

Abstract

Water pollution is one of the modern world's major issues. One of the most significant sources
of water pollution is textile dyeing waste water. Water contamination with dye is a problem of
high concern for the environment and human health. It is estimated that up to 50% of annual
dye production ends up in the environment, either directly as wastewater effluent or through
loss during the dying process. Non-biodegradable methyl orange can cause a slew of
environmental issues by releasing toxic and carcinogenic compounds .It is need of the time to
treat the effluents with cost effective and environment friendly techniques to meet water
requirements. The purpose of this study was to understand how azo dyes effects the humans
and environment .The purpose of my study/research was reduce the toxic effects, especially
carcinogenic and mutagenic effects of Azo dyes. .Focused to develop efficient and cost
effective treatment for Dyes contaminated water. In this research, UV-C/H2O2 and UV-
C/Tio2 were used for removal of Methyl Orange dye (MO). The effects of dose (200 mg/L –
1000 mg/L), initial concentration (10 mg/L - 40 mg/L) of the dyes, pH (2 - 8), and contact time
(10- 120 min) was evaluated. This study demonstrated that the maximum removal of MO was
82%, 82%, 78% and 80% at concentration (40 mg/L), dose (1000 mg/L), pH (4) and time
(80ppm=120 minutes). The minimum removal of MO was 22%, 20%, 1-2% and approximately
20% at concentration (10 mg/L), dose (200 mg/L), pH (8) and time (10ppm=10 min) by using
UV-C/H2O2, and UV-C/TiO2. Comparison with other previous studies shows that the
proposed materials and methodology are more efficient with greater removal capacity. It is
suggested that this method should be used for the removal of MO at industrial level because it
has several advantages like it is ecofriendly, environmental protection, the complete
degradation of pollutants and so no secondary pollutants.
Keywords: Pollutant, Methyl orange, carcinogenic and mutagenic, Azo Dyes

Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus

167