Geochemistry of Fluvial Sediments from Geregu, Southwest Nigeria

Adiotomre, E. E.; Ejeh, Innocent O.; Adaikpoh, Edwin O.

doi:10.1515/rmzmag-2017-0004

Cited by 3 publications

(3 citation statements)

References 45 publications

(64 reference statements)

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“…Thus the friction factor is a function of Reynolds's number and independent of the penstock's material properties as implied by the equation (5). In laminar flow, according to the equation (5), the friction factor is inversely proportional to viscous energy losses.…”

Section: Head Losses In the Penstock Head Losses In The Penstock Headmentioning

confidence: 99%

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Determination of Head for Small Hydropower Development: A Case Study of River Ethiope at Umutu

Otuagoma¹,

Ogujor²,

Kuale³

2015

Nig. J. Tech.

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In this study, an appropriate head in metre for small hydropower development for the River Ethiope at the source In this study, an appropriate head in metre for small hydropower development for the River Ethiope at the source In this study, an appropriate head in metre for small hydropower development for the River Ethiope at the source In this study, an appropriate head in metre for small hydropower development for the River Ethiope at the source at Umutu was determined. The Dumpy levels at Umutu was determined. The Dumpy levels at Umutu was determined. The Dumpy levels at Umutu was determined. The Dumpy levels and Theodolite method were used to determine the head at the source and Theodolite method were used to determine the head at the source and Theodolite method were used to determine the head at the source and Theodolite method were used to determine the head at the source at Umutu. The results showed that the gross head of the River Ethiope at Umutu is roughly 18.5 m using the Dumpy at Umutu. The results showed that the gross head of the River Ethiope at Umutu is roughly 18.5 m using the Dumpy at Umutu. The results showed that the gross head of the River Ethiope at Umutu is roughly 18.5 m using the Dumpy at Umutu. The results showed that the gross head of the River Ethiope at Umutu is roughly 18.5 m using the Dumpy levels and Theodolite method. However, in every hydraulic structure, there levels and Theodolite method. However, in every hydraulic structure, there levels and Theodolite method. However, in every hydraulic structure, there levels and Theodolite method. However, in every hydraulic structure, there are losses. The head loss was calculated are losses. The head loss was calculated are losses. The head loss was calculated are losses. The head loss was calculated to be 9.3 m thereby placing the net head to be 9.2 m using value from the Dumpy levels. With a head of 9.2 m and a to be 9.3 m thereby placing the net head to be 9.2 m using value from the Dumpy levels. With a head of 9.2 m and a to be 9.3 m thereby placing the net head to be 9.2 m using value from the Dumpy levels. With a head of 9.2 m and a to be 9.3 m thereby placing the net head to be 9.2 m using value from the Dumpy levels. With a head of 9.2 m and a volumetric flow of 31.73 m volumetric flow of 31.73 m volumetric flow of 31.73 m volumetric flow of 31.73 m 3 3 3 3 /s, the power potential of the River Ethiope was placed at 2.43 MW. It ca /s, the power potential of the River Ethiope was placed at 2.43 MW. It ca /s, the power potential of the River Ethiope was placed at 2.43 MW. It ca /s, the power potential of the River Ethiope was placed at 2.43 MW. It can therefore be n therefore be n therefore be n therefore be concluded that the River Ethiope when fully harnessed could generate electricity to meet part of the power need of concluded that the River Ethiope when fully harnessed could generate electricity to meet part of the power need of concluded that the River Ethiope when fully harnessed could generate electricity to meet part of th...

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Section: Head Losses In the Penstock Head Losses In The Penstock Headmentioning

confidence: 99%

“…It is located within the equatorial region with two climatic conditions -the wet and dry seasons [4]. The River Ethiope's volumetric flow has been investigated by Otuagoma et al [4] and the economic potentials of the river have also been reported on by Adiotomre et al [5]. Figure 1.…”

Section: Introduction Introduction Introduction Introductionmentioning

confidence: 98%

Determination of Head for Small Hydropower Development: A Case Study of River Ethiope at Umutu

Otuagoma¹,

Ogujor²,

Kuale³

2015

Nig. J. Tech.

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“…A-NdeMili River(Asowata, 2017) B-Nkisi River(Asowata, 2017) C-Akure stream sediments(Asowata et al, 2015) D-Geregu River sediments(Adiotomre, et al 2017) E-Lagos lagoon (Olatunji and Abimbola, 2010) F-Average Share Concentration(Turekian and Wedepohl, 1961) G-Southwest River Basin Sediments(Lapworth, et al, 2012) H-Lagos Coaster Stream Sediments(Odukoya and Akande, 2015) …”

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confidence: 99%

Evaluation of trace elements in the sediments of intertidal zone around Mahin-Ugbo Area, southwestern Nigeria

Asowata,

Bamisaiye,

Akinwale

2023

ijs

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This study assessed the spatial distribution of Trace Elements (TE) in the muddy sediments of the Mahin-Ugbo coastal area of Southwestern Nigeria, using Inductively Coupled Plasma-mass spectrometry, (ICP-MS). The physicochemical parameters (pH, EC and TDS) of the sediments were also determined. Results showed that the mean values for pH, E.C and TDS were 5.09, 153.6 μs/cm and 76.8 mg/L, respectively. Further, there was a varying distribution pattern of TE concentrations: Mn> Zn > Ba > Cr > V > Sr > Pb > La > Cu > Ni > Co > As > Th > Sc > Ga. The As, Pb, and Zn concentrations in the sediment with mean values of 11.2, 40.4 and 122.1 ppm, respectively, were significantly higher than the average concentrations of As (10 ppm), Pb (20 ppm) and Zn (90 ppm) in natural shale, suggesting anthropogenic TE enrichment in the study area. To corroborate this, the TE source apportionments in the sediments using correlation coefficient, bi-variant plots and principal component analyses showed that the TE enrichment may have been anthropogenically induced. Pollution status assessments using I-geo, contamination factors and pollution load index indicated that the study area's sediments is slightly to moderately polluted. These findings suggest that although the area is not heavily polluted, increasing human activities, from inland rivers to the coastal area, in the study area will in no time be a cause for concern.

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Secular variation in the elemental composition of marine shales since 840 Ma: Tectonic and seawater influences

Wei

Algeo

2020

Geochimica et Cosmochimica Acta

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Geochemistry of Fluvial Sediments from Geregu, Southwest Nigeria

Cited by 3 publications

References 45 publications

Determination of Head for Small Hydropower Development: A Case Study of River Ethiope at Umutu

Determination of Head for Small Hydropower Development: A Case Study of River Ethiope at Umutu

Evaluation of trace elements in the sediments of intertidal zone around Mahin-Ugbo Area, southwestern Nigeria

Secular variation in the elemental composition of marine shales since 840 Ma: Tectonic and seawater influences

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Geochemistry of Fluvial Sediments from Geregu, Southwest Nigeria

Cited by 3 publications

References 45 publications

Determination of Head for Small Hydropower Development: A Case Study of River Ethiope at Umutu

Determination of Head for Small Hydropower Development: A Case Study of River Ethiope at Umutu

Evaluation of trace elements in the sediments of intertidal zone around Mahin-Ugbo Area, southwestern Nigeria

Secular variation in the elemental composition of marine shales since 840 Ma: Tectonic and seawater influences

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Secular variation in the elemental composition of marine shales since 840 Ma: Tectonic and seawater influences