Browsing by Author "Tayo Elijah EGBEDEYI"

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    Microbial and Physicochemical Characterization of Effluent and Waste Water around a Detergent Manufacturing Complex in Ibadan, Nigeria
    (Lead City University, Ibadan, 2025-12) Tayo Elijah EGBEDEYI
    Industrialization has contributed immensely to economic growth, urban development, and improved standards of living across the world. The detergent manufacturing industry is one of the most polluting industrial sectors due to its high chemical input, complex production processes, and generation of large volumes of wastewater. The aim of this study is to characterize the microbial and molecular profile of effluent, workers wash water, and receiving surface water from a detergent manufacturing complex in Ibadan, Nigeria. Effluent and wastewater samples were collected from three distinct sites associated with the detergent manufacturing complex. Physicochemical parameters were measured and Microbial characterization involved both cultural and molecular techniques were carried out. The results of this study demonstrated that effluents and wastewater discharged from the detergent manufacturing complex in Ibadan are heavily polluted, with significant deviations from recommended physicochemical standards and a high microbial burden dominated by coliform bacteria. The predominance of Bacillus spp. (33 %), Staphylococcus sp. (15 %), Klebsiella spp. (3.0 %), and Escherichia coli. (6.1 %) among isolates is consistent with previous reports of the presence of microbial contamination in industrial effluents. Physicochemical analyses confirmed that the effluent was not compliant with World Health Organization (WHO) standards, particularly with respect to pH, BOD, COD, and nutrient load. Out of the three isolates tested, blaCTX-M, was detected in 2 (66.7 %) of the isolates, indicating a moderate prevalence of extended-spectrum β-lactamase (ESBL) producers in the sampled environment. The SUL1 gene, was identified in all isolates (100 %), suggesting widespread dissemination of sulfonamide resistance within effluent-associated bacteria. Overall, the study highlights the urgent need for stricter regulatory enforcement, improved effluent treatment technologies, and continuous monitoring of industrial wastewater. Keywords: Effluents, Industrial discharge. Microorganisms, Ibadan, Pollutants, Contaminants Word Count: 269