Impact of the Effluence from Aluminium Extrusion Plant on Mbaa River, Inyishi, Southeastern Nigeria

Chidinma Annivena Acholonu, Cosmas Ahamefula Ahiarakwem, Victor Inumidun Fagorite, Olumide Ajayi


The impact of aluminium extrusion plant on Mbaa River was investigated by analyzing the physical and chemical contents of the river using the Atomic Absorption Spectrophotometer (AAS) and digital meters. The main objective of the study was to provide useful information for the management of the Aluminium waste stream that is being discharged into the Mbaa River, thereby ensuring sustainable management of the River. The result shows that the pH of the river varies from 6.40 to 6.48. Al concentration varies from 0.09 to 0.28mg/l while total iron concentration range from 0.02 to 0.06mg/l. The river shows traces of Fluoride. The Pollution Index (PI) was 0.713. Except for the Al, the concentrations of other measured parameters conformed to the World Health Organization (WHO) 2006 safe standards for drinking water. The impacts of the aluminum waste-stream on the river and its watershed include: damage of economic trees like coconut and raffia palms as well as decline in the cultivation of certain varieties of vegetables near the river. Therefore, treatment of the aluminum waste-stream before disposal and a regular monitoring of the physical and bio-chemical characteristics of the Mbaa River is the best approach to maintain its resource status and usefulness. For further studies, the effect of Aluminum waste stream on nearby groundwater resources should be investigated since the present studies has provided useful information for sustenance of the surface water around the study area.  

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