NDLI: Sonochemical Degradation of Chlorinated Phenolic Compounds in Water: Effects of Physicochemical Properties of the Compounds on Degradation

Content Provider	Springer Nature Link
Author	Park, Jong Sung Her, Nam Guk Yoon, Yeomin
Copyright Year	2010
Abstract	This study examined a comparative degradation of various chlorinated phenolic compounds including phenol, 4-chlorophenol (4-CP), 2,6-dichlorophenol (2,6-DCP), 2,4,6-trichlorophenol (2,4,6-TCP), 2,3,4,6-tetrachlorophenol (2,3,4,6-TeCP), and pentachlorophenol (PCP) using 28, 580, and 1,000 kHz ultrasonic reactors. The concentration of hydrogen peroxide was also determined in order to investigate the efficacy of different sonochemical reactors for hydroxyl radical production. Clearly, it was observed that the 580 kHz sonochemical reactor had maximum efficacy for hydroxyl radical production. The degradation of all the compounds followed the order; 580 kHz (91–93%) > 1,000 kHz (84–86%) > 28 kHz (17–34%) with an initial concentration of 2.5 mg L$^{−1}$ at a reaction time of 40 min with ultrasonic power of 200 ± 3 W and aqueous temperature of 20 ± 1°C in each experiment. Overall, the degradation of those phenolic compounds followed the order, PCP > 2,3,4,6-TeCP > 2,4,6-TCP > 2,6-DCP > 4-CP > phenol at various frequencies in the presence/absence of a radical scavenger (tert-butyl alcohol). It was revealed that the correlations between the compound degradation rates and the physicochemical parameters, R $^{2}$ = 0.99 for octanol–water partition coefficient, R $^{2}$ = 0.95 for water solubility, R $^{2}$ = 0.94 for vapor pressure, and R $^{2}$ = 0.88 for Henry’s law constant, excluding PCP, were very good in the entire range of each parameter.
Starting Page	585
Ending Page	593
Page Count	9
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	215
Issue Number	1-4
e-ISSN	15732932
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-06-10
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chlorinated phenolic compounds HPLC/MS Ultrasound frequency Degradation rate Physicochemical properties Climate Change Hydrogeology Soil Science & Conservation Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution Environment
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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