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ARPN Journal of Science and Technology >> Volume 7, Issue 1, January 2017

ARPN Journal of Science and Technology

Modeling Parameters of Oxygen Demand in the Aquatic Environment of Lake Chad for Depletion Estimation

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Author Peter A. Gwaski, Stephen S. Hati, Naomi P. Ndahi, Victor O. Ogugbuaja
ISSN 2225-7217
On Pages 116-123
Volume No. 3
Issue No. 1
Issue Date February 01, 2013
Publishing Date February 01, 2013
Keywords Dissolved oxygen, regression model, BOD, COD, TOC


Modeling water quality parameter is an important tool for ecosystem sustainability management. This study takes a two-step procedure in developing a simple estimation tool for delineating oxygen demand parameter of concern in the Lake Chad. First, to determine the concentration levels of DO vis-a-viz the level of exertion on the oxygen budget from oxygen demand parameters (BOD, COD and TOC). Secondly to utilize a simple linear regression equation model to estimate the rate of depletion and delineate the parameter of concern. The results of this study generally revealed a healthy state of the aquatic environment of Kwatan Dawashe portion of the Lake Chad at the time of this study. However, it was evident that oxygen demand parameters were season dependent following the intrinsic factors associated with their variations. Thus for a more reliable depletion estimation model this significant seasonal variation was taken into account, thereby delineating COD as the parameter of concern during the dry season. However, this estimation model serves as short term tool for sustainability management process; therefore further studies are required with a larger coverage of the Lake Chad region and model calibration.

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