Impact of Inherent Factors on the Radiolytic Degradation of Biorefractory Contaminants
Publication: Journal of Environmental Engineering
Volume 132, Issue 11
Abstract
Experiments were carried out to gain insight into the effect of inherent factors on the radiolytic degradation of two biorefractory contaminants, Acid Orange 7 (AO7) and nitrobenzene (NB). The effects of irradiation dose rate , initial substrate concentration , pH, and temperature of solutions were evaluated in terms of degradation kinetics, degradation efficiency, initial values of substrate decomposition, and total organic carbon reduction. Higher and lower values were favorable for the efficient utilization of radiation energy, whereas higher and lower levels were beneficial for degradation rate. An increase in pH led to a reduction in degradation rate constant or degradation efficiency. The temperature of solutions had different effects on the radiolytic degradation of AO7 and NB. The degradation of AO7 followed the empirical Arrhenius law, whereas an increase in temperature led to a reduction in the degradation of NB.
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Acknowledgments
The writers wish to thank the Jiangsu Key Laboratory of Environmental Science and Technology, China, for financial support of this study (Grant No. KJS03072).
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 132 • Issue 11 • November 2006
Pages: 1518 - 1522
Copyright
© 2006 ASCE.
History
Received: Sep 2, 2004
Accepted: Feb 9, 2006
Published online: Nov 1, 2006
Published in print: Nov 2006
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