STM Article Repository

This study was aimed at developing mathematical models for the process parameters of a typical tannery effluent. Three model equations were developed using the empirical method of the least squares. A close agreement was observed between the simulated values and experimental values. The mean deviation of 2.17% was obtained for rainy season, 1.81% for harmattan and 2.26% for dry season. A correlation coefficient of 0.999, 1.000 and 1.000 were obtained for rainy season, harmattan and dry season respectively. A t-value of 1.581 was calculated for the rainy season, 0.011 for harmattan and 0.202 for dry season with corresponding p-values of 0.175, 0.992 and 0.848 respectively. The empirical models developed using the method of least squares can represent the process parameters of a typical tannery effluent and can be used to investigate the effect on the environment. And the pH of the effluent is within the limit for surface discharge.