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¹ Department of Biology, Microbiology & Biotechnology, Nile University of Nigeria, Abuja, Nigeria
² Department of Biology, Ibrahim Badamasi Babangida University Lapai, Niger State, Nigeria
³ Department of Biochemistry, Ibrahim Badamasi Babangida University, Lapai, Niger State, Nigeria DOI : 10.38042/biotechstudies.2023369 - Aquatic pollution is caused by the rapid development in industrialization. Therefore, using microorganisms to remediate industrial wastewater (IWW) is a green method that would stop or lessen aquatic contamination. This work explores the secondary metabolites generated by Bacillus sp. and Aspergillus niger that were identified from the Wupa Wastewater Treatment Plant in Abuja, Nigeria. Using morphological and molecular methods, the isolates were identified. Gas chromatography-mass spectrometry (GC-MS) was used to analyze the secondary metabolites that the isolates generated. The extracts were extracted using liquid-liquid extraction. Potato Dextrose Agar and Nutrient Agar was supplemented with three different concentrations of each metal (5 to 80 mgL^-1) Aspergillus niger and Bacillus sp. were selected for their potential to remediate heavy metal. Additionally, peptone broth was added with various heavy metal concentrations. By utilizing a UV spectrophotometer set at 600 nm to track the development of biomass, the remediation potential was determined. The results revealed a diverse array of bioactive compounds, including Octadec-9-enoic acid (27.16%), Butanoic acid (18.54%), Propanal, 3-methoxy- (9.33%), Oleoyl chloride (10.64%), n-Hexadecanoic acid (10.59%), 2,3-Butanediol (6.92%), Octadec-9-enoic acid (16.28%) and other metabolites which have shown strong bioremediation potential applications in biotechnology and environmental management. The maximum potential for bioremediation was shown by Aspergillus niger and Bacillus sp., with optical densities of 1.080 in 40 mg FeL^-1 and 10 mg ZnL^-1, respectively. The importance of wastewater ecosystems as sources of beneficial secondary metabolites and their potential for heavy metal remediation are highlighted by this study. Keywords : Aspergillus niger, Bacillus sp, Secondary metabolites, Effluent, GC-MS, Bioremediation