Molecular characterisation of bacteria strains of septic tank sewage samples from related sites in Delta and Edo States of Nigeria using 16S rRNA denaturing gradient gel electrophoresis (DGGE)

Metagenomic Analysis of the Abundance and Composition of Antibiotic Resistance Genes in Hospital Wastewater in Benin, Burkina Faso, and Finland

“…Significant prevalence of anaerobic genera, such as Geobacter , Aminomonas , Flexilinea , and Desulfovibrio , as well as genera of Synergistetes and Bacteroidales observed in HWW from Benin and Burkina Faso and not in Finland, is in line with this speculation except for the last-mentioned taxa, which are typical human gut commensals ( 53 ). These findings also align with the previous reports on bacterial genera typically found in soil and aquatic environments ( 54 ) and previously described to dominate HWW from Benin and Burkina Faso ( 55 ). Genera of the facultatively anaerobic bacteria, such as the lactic acid bacterium Aeromonas , and of the anaerobic bacterium Bifidobacterium ( 56 ), which are considered typical human gut microbes ( 53 ), were significantly differentially abundant in the Finnish HWW instead of HWW of Benin or Burkina Faso.…”

Metagenomic analysis of the abundance and composition of antibiotic resistance genes in hospital wastewater in Benin, Burkina Faso, and Finland

“…Significant prevalence of anaerobic genera such as Geobacter, Aminomonas, Flexilinea, Desulfovibrio , and genera of Synergistetes and Bacteroidales observed in HWW from Benin and Burkina Faso and not in Finland is in line with this speculation except for the last-mentioned taxa, which is a typical human gut commensal 55 . These findings also align with the previous reports on bacterial genera typically found in soil and aquatic environments 56 and previously described to dominate HWW from Benin and Burkina Faso 57 . Facultatively anaerobic bacteria such as the genera of lactic acid bacteria, Aeromonas , and the anaerobic Bifidobacterium 58 which are considered typical human gut microbes 55 were significantly more abundant in the Finnish HWW than in Benin or Burkina Faso.…”

“…This may be due to the closer contact of water with environmental surfaces in septic tanks and sumps compared to the more isolated wastewater systems in Finland. Bacterial genera typically found in soil and aquatic environments 50 have also been previously described to dominate HWWs from Benin and Burkina Faso 51 . In contrast, the 15 most abundant genera in Finnish HWWs included less environmental bacteria and more bacteria typical for human gut communities, such as Bifidobacterium 41 and Faecalibacterium 52 .…”

Heavy Metals pH-Mediated Microbial-Remediation in Septic Tank Effluents

“…The majority of Gram-positive bacteria have the capacity for metal adsorption (Ojuederie and Babablola, 2017;Osman et al, 2019;Song et al, 2004;Yilmaz, 2003), several of these types of bacteria were discovered in the effluent samples in this study area (Oyem et al, 2020). Natural bacteria communities have shown great potential as tools for bioremediation of heavy metal ions (Gupta et al, 2016;Hashim et al, 2011;Ojuederie and Babablola, 2017;Osman et al, 2019;Wood et al, 2016).…”

“…Isolation, enumeration, identification and characterization of isolates were accomplished using standard microbiological techniques. Denaturing gradient gel electrophoresis (DGGE) was also used to fingerprint microorganisms in the septic tanks and results have already been published in a separate paper (Oyem et al, 2020).…”