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Wyszukujesz frazę "Orji, J.C." wg kryterium: Autor


Wyświetlanie 1-5 z 5
Tytuł:
Abattoir wastewater treatment and energy recovery using a ferricyanide-catholyte microbial fuel cell.
Autorzy:
Akaluka, C.K.
Orji, J.C.
Braide, W.
Egbadon, E.O.
Adeleye, S.A.
Powiązania:
https://bibliotekanauki.pl/articles/11752.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Opis:
The capacity of Microbial fuel cells (MFCs) to produce voltage and concurrently treat abattoir waste water was investigated in MFCs that used 0.1M potassium ferricyanide (K3[Fe(CN)6] as catholytes. Physicochemical, electrochemical and Microbiological properties of the MFCs were monitored. The open circuit voltage (OCV) readings were taken at 3 hours interval and maximum OCV of 965mV was recorded. Also, The physicochemical characteristics of the MFCs revealed that the pH decreased by 0.2 after treatment; Chemical Oxygen demand, biochemical oxygen demand, total suspended solids, ammonia, and total nitrogen reduced by 88.4%, 65.56%, 43.88%, 60% and 60% respectively. However, Phosphate increased by 54%. The bacterial isolates from the raw abattoir wastewater were Staphylococcus aureus, Bacillus cereus, Bacillus subtilis, Enterococcus faecalis, Enterobacter aerogenes, Escherichia coli and Micrococcus luteus while Enterococcus faecalis, Bacillus cereus and Escherichia coli were isolated from the biofilms on the anode. Microbial fuel cells therefore have capacities for simultaneous waste water treatment and electricity generation.
Źródło:
International Letters of Natural Sciences; 2016, 55
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimizing biomethanation of a lignocellulosic biomass using indigenous microbial-cellulases systems
Autorzy:
Ngumah, C.
Ogbulie, J.
Orji, J.
Amadi, E.
Nweke, C.
Allino, J.
Powiązania:
https://bibliotekanauki.pl/articles/80248.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biomethanation
lignocellulosic waste
anaerobic digestion
biogas
biowaste
recalcitrant plant
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2017, 98, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A palynology and paleoenvironmental study of a section from the Amansiodo-1 well, Anambra Basin, southeastern Nigeria
Autorzy:
Chukwuma-Orji, J. N.
Okosun, E. A.
Ekom, J. C.
Abolarin, J. F.
Powiązania:
https://bibliotekanauki.pl/articles/184385.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
southeastern Nigeria
Anambra Basin
palynology
paleoenvironment
Amansiodo-1 well
Opis:
Palynological analysis was carried out on twenty (20) ditch cutting samples from a section (1284.73–1496.57 m) of the Amansiodo-1 well, Anambra Basin, southeastern Nigeria with the aim of determining the age, biozone, and depositional environment of the sediments within the depth interval. The laboratory techniques of digesting sediments in hydrochloric and hydrofluoric acids for silicates and carbonates removal were followed to process the samples for the recovery of palynomorphs. Fifty two (52) palynomorph specimens were recovered. An assemblage zone of Echitriporites trianguliformis Zone has been established. The section was dated to the upper Maastrichtian due to the occurrences of age diagnostic marker species such as: Cingulatisporites ornatus, Distaverrusporites simplex, Proteacidites sigalii, Dinogymnium cf auclaense, Echitriporites trianguliformis and Retidiporites magdalensis. Based on the palynomorph marine index and environmental indicator flora, the section was inferred to be deposited in marine to brackish (coastal) environments with little influence of fresh water.
Źródło:
Geology, Geophysics and Environment; 2017, 43, 4; 293-301
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil erosion susceptibility mapping of Imo River Basin using modified geomorphometric prioritisation method
Autorzy:
Nwilo, Peter C.
Ogbeta, Caleb O.
Daramola, Olagoke E.
Okolie, Chukwuma J.
OrJi, Michael J.
Powiązania:
https://bibliotekanauki.pl/articles/2054950.pdf
Data publikacji:
2021-09-01
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
morphometry
weighted sum analysis
soil erosion susceptibility
SRTM
remote sensing
GIS
Imo River Basin
Opis:
Gullies and other forms of erosion have been the greatest environmental problem and catastrophe in most high- and low-income countries. The challenge posed by soil erosion has compromised agricultural productivity, en-vironmental biodiversity and food safety for the world’s population. It is important to identify vulnerable areas to soil erosion in each region to initiate remedial measures. This study demonstrates the use of watershed morphometry coupled with weighted sum analysis (WSA) to estimate the soil erosion susceptibility of the Imo River Basin sub-wa-tersheds (SWs) in South-Eastern Nigeria using satellite remote-sensing data and geographic information system (GIS) analysis. To this end, Shuttle Radar Topography Mission (SRTM), a Digital Elevation Model (DEM) with 30 m spatial resolution was used to extract and analyse 18 morphometric parameters including basic, linear, shape and relief. The method of receiver operating characteristics (ROC) curves was used to validate the model’s prediction accuracy. This morphometry-based analysis resulted in the SWs being classified into zones of low, medium, high and very high erosion susceptibility. With regard to erosion susceptibility, 41.51% of the basin (2494.68 km2) is in the very high pri-ority zone; while 10.50%, 44.33% and 3.66% of the basin are in the high, medium and low priority zones respectively. Validation of the final erosion susceptibility map showed a prediction accuracy of 81%. The use of satellite imagery and morphometric analysis in this study was cost- and time-effective for identifying areas susceptible to soil erosion.
Źródło:
Quaestiones Geographicae; 2021, 40, 3; 143-162
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Health implications of stream water contamination by industrial effluents in the Onitsha urban area of Southeastern Nigeria
Autorzy:
Okafor, Uchenna P.
Obeta, Michael C.
Ayadiuno, Romanus U.
Onyekwelu, Anthony C.
Asuoha, Godson C.
Eze, Eberechukwu J.
Orji-Okafor, Chetachi E.
Igboeli, Emeka E.
Powiązania:
https://bibliotekanauki.pl/articles/1844374.pdf
Data publikacji:
2021
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
contamination
health implication
industrial effluents
Onitsha urban
stream water
Opis:
Nigeria has abundant surface and ground water resources many of which are polluted and can be detrimental to human health when consumed. This study investigated the effects of effluents discharged by industries into streams on the health of people who depend on stream water for domestic purposes in the Onitsha urban area of eastern Nigeria. Water samples collected from eleven discharge locations underwent physico-chemical and microbiological analyses. Data on the effects of industrial effluents on health were obtained from records in the public hospitals located in Onitsha as well as through questionnaire surveys and field observations. The results of the analyses revealed that the effluents grossly degrade surface water bodies; several parameters (temperature, iron, dissolved oxygen, turbidity, biological oxygen demand, chemical oxygen demand, lead, magnesium, total heterotrophic counts, total coliform group, pH) had values which were higher than the WHO (2011) safety limits for drinking water. The contamination of investigated streams by effluents had negative impact on the health of stream users. The discussion included health effects of polluted water and the prevalence of water borne or related diseases in the area. Implications of these findings were also discussed. Management measures capable of minimizing contamination of surface water in the study area were suggested.
Źródło:
Journal of Water and Land Development; 2021, 48; 105-114
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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