Environmental impact of marine transportation on the Ogu-Bonny channel in Onne river state
| dc.contributor.author | Akeredolu, Ayodeji Owojori | |
| dc.date.accessioned | 2026-03-17T10:55:07Z | |
| dc.date.available | 2026-03-17T10:55:07Z | |
| dc.date.issued | 2015-12 | |
| dc.description | This thesis is for the award of Master of Science (M.Sc.) in Environmental Technology | |
| dc.description.abstract | The physicochemical characteristics of the Ogu-Bonny Channel serving the Onne Port, as well as some shipping transport activities that could constitute pollution in the Channel were investigated during the wet season of 2011 at three sampling locations. In situ measurements were made for water temperature, turbidity, conductivity, salinity, and dissolved oxygen (DO) with HORIBA U-10 Water Quality Checker and for total dissolved solids (TDS) with HACH conductivity/TDS meter. Water samples were collected in replicates with 2 litres plastic container and transferred to the laboratory in iced-coolers for analysis. The test of homogeneity in mean variance was used to determine spatial variation in the physicochemical variables, and the Pearson product moment correlation coefficient (r) to explore the interrelationship between the parameters and shipping transport activities. Water temperature varied between 28.50-28.90 (28.68 ± 0.07) °C, turbidity between 69.00-92.50 (81.16 ± 4.83) NTU, and salinity between 35.20-36.72 (36.13 ± 0.25) %o. DO varied between 0.85 and 1.84 (1.21 ± 0.18), BOD between 2.05 and 3.61 (3.21 ± 0.30), PO42-between 0.002 and1.050 (0.378 ± 0.227), SO42-between 21.70 and 100.00 (76.78 ± 14.31), and NO3-between 2.10 and 3.60 (2.89 ± 0.28) mg/L. However, the trace metals (Fe, Pb, Zn, Hg and Cu) varied between 0.60-3.07 (1.71 ± 0.55), 0.00-0.02 (0.01 ± 0.003), 0.02-0.40 (0.14 ± 0.07), 0.000-0.002 (0.002 ± 0.000), and 0.02-0.16 (0.06 ± 0.03) mg/L, respectively. Fe, Zn and Cu levels were outside permissible limits for aquatic life by the Federal Ministry of Environment. Sampling location B recorded highest concentrations in several of the variables, though there was spatial homogeneity [F(1.73) < Fcrit(3.92)] at P<0.05. Of the shipping transportation activities, garbage generation on board accounted for the highest waste volume (97.13%), even as bilging significantly influenced hardness (r=0.992; P<0.01), and bunkering influenced Pb level (r=0.948), accidental dumping of effluents influenced water temperature (r=0.881), and fish trawling and deliberate dumping of effluents influenced DO (r=0.896 and 0.957, respectively) at P<0.05. It is recommended that regulatory agencies should enforce environmental laws to prevent the Port from getting seriously polluted. | |
| dc.identifier.citation | Akeredolu, A. O. (2015). Environmental impact of marine transportation on the Ogu-Bonny channel in Onne river state, [Unpublished Master's Thesis], Federal University of Technology, Owerri, Nigeria | |
| dc.identifier.uri | https://repository.futo.edu.ng/handle/20.500.14562/2383 | |
| dc.language.iso | en | |
| dc.publisher | Federal University of Technology, Owerri | |
| dc.rights | Attribution 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | Ogu-Bonny channel | |
| dc.subject | transportation | |
| dc.subject | pollution | |
| dc.subject | water quality | |
| dc.subject | regulation | |
| dc.subject | Department of Environmental Technology | |
| dc.title | Environmental impact of marine transportation on the Ogu-Bonny channel in Onne river state | |
| dc.type | Master’s Thesis |