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Author Yuan, Jue ♦ Zeng, Li ♦ Zhao, Yijun ♦ Wu, Yihong ♦ Ji, Ping ♦ Chen, Bin
Source SpringerLink
Content type Text
Publisher Higher Education Press
File Format PDF
Copyright Year ©2013
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Earth sciences
Subject Keyword contaminant transport ♦ volatilization ♦ reaction ♦ wetland hydraulics ♦ Earth Sciences
Abstract Presented in this paper is an analytical study of a pulsed volatile contaminant emission into a free-surface wetland flow. A simplified model is given for contaminant transport under the combined action of advection, mass dispersion, apparent reaction, and volatilization at the free water surface. The effect of periodic apparent reaction on contaminant transport is separated from the hydraulic effect via an extended transformation, with a limiting case covering the known transformation for constant apparent reaction rate. The analytical solutions of zeroth and first order concentration moments are rigorously derived and illustrated. It was found that the amount of contaminant decreases from the bottom bed to the free-surface under volatilization, and the total amount of contaminant decays with time. It was also found that the moving speed of the mass center of the whole contaminant cloud increases, as the ratio of volatilization coefficient to vertical effective mass dispersivity increases.
ISSN 20950195
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2014-02-18
Publisher Institution Chinese Universities
Publisher Place Heidelberg
e-ISSN 20950209
Journal Frontiers of Earth Science in China
Volume Number 8
Issue Number 1
Page Count 8
Starting Page 115
Ending Page 122

Source: SpringerLink