ENVIRONMENTAL ENGINEERING RESEARCH
Online ISSN : 1884-829X
Print ISSN : 1341-5115
ISSN-L : 1341-5115
Evaluation of dynamics of PPCPs at Yodo River System
Seiya HANAMOTOHiroki SUGISHITANaoyuki YAMASHITAHiroaki TANAKAIsao HOWAChie KONISHI
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JOURNAL FREE ACCESS

2008 Volume 45 Pages 29-37

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Abstract

Degradation of PPCPs in the water environment was evaluated. On the assumption that the degradation is a first-order reaction, the reaction constants were calculated by comparing the mass load of upstream and downstream and the time of flow at Yodo River System. Batch experiments were also conducted and the reaction constants were determined and compared with those of the river surveys. These were greatly different for ketoprofen, azithromycin, diclofenac and levofloxacin, suggesting the other mechanisms of decrease in the concentrations such as photodegradation or adsorption to the sediments. In the river surveys, biodegradability was found much different depend on the sites.

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© by Japan Society of Civil Engineers
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