Founding Editor: Prof. Dele Ogunseitan
Abbreviation: Afr. J. Environ. Sci. Technol.
Start Year: 2007
Page 1 of 41, showing 20 records out of 806 total, starting on record 1, ending on 20
DOI: 10.5897/AJEST2016.2203[Article Number: F72C4A961553]
The Central-African country of Chad, located in the Sahel-Sahara zone, faces diverse shortages of portable water. The only reliable source of water available for drinking, domestic and agricultural use in the Dababa Division is groundwater. Conventional hydro-geochemical and isotopic methodology, coupled with piezometric data, allowed investigators to identify the numerous process affecting not only water quality, but... Read more.
DOI: 10.5897/AJEST2016.2182[Article Number: AA5944261556]
The indigenous knowledge systems are a significant resource which would contribute to the increased efficiency, effectiveness and sustainability in environmental conservation among rural communities of developing countries in particular. They form the basis for community-level decision making in areas pertaining to food security, human and animal health, education and more important in natural resource management.... Read more.
DOI: 10.5897/AJEST2016.2209[Article Number: 4FF9D0B61560]
Climate change has the potential to affect hydropower generation by either increasing or reducing flows (discharge) and the head. This paper assessed the impacts of climate change on hydropower generation with a focus on Lujeri micro-hydropower scheme in Mulanje district, Malawi. The study analyzed trends in weather time series (air temperature and rainfall) data from 1980 to 2011 in connection to changes in river... Read more.
DOI: 10.5897/AJEST2016.2181[Article Number: 8E0A0ED61099]
The Niger Delta Area of Nigeria has undergone several alterations in her environment through various projects development including oil and gas exploration, dredging and mining activities. These activities have continued to impact the environment as relevant organs of the government deliberately down play the relationship between environmental degradation/pollution and project developments. Though, there are plethora of... Read more.
DOI: 10.5897/AJEST2016.2169[Article Number: BA173AF61101]
Petroleum and petrochemical hydrocarbons for some places are serious sources of environmental pollutants. To remediate these contaminants, phytoremediation, a relatively low cost and an environmental friendly technique is recommended more widely, now more than ever. Successful and effective applying of hydrocarbons phytoremediation depends mainly on the soil and plant types and conditions and microbial activities and... Read more.
DOI: 10.5897/AJEST2016.2136[Article Number: 7C100BF61103]
This study assessed the current status of Awoja in Ngora district of Eastern Uganda. Remote sensing, household survey, In Pac S methodology and focus group discussions were used to acquire data from April to July, 2015. Landsat satellite imageries from 2007 and 2013 were acquired by USGS Earth Explorer to quantify land use/cover changes. Five land use/cover types were identified namely; (1)... Read more.
DOI: 10.5897/AJEST2016.2184[Article Number: 6A3AD9C61105]
The applications of various clayey minerals are related to their structural, physical and chemical characteristics. The physical and chemical properties of the clayey minerals dictate their utilization in the process industries and beneficiation required before usage. The study aimed at establishing the potentiality of clayey minerals from the study area, and the possibility of exploring and exploiting them in order to... Read more.
DOI: 10.5897/AJEST2016.2107[Article Number: 804014761107]
Increasing road congestion and high traffic volume is often times an indicator of atmospheric air pollution. Ibadan, being the largest metropolitan city in southwestern Nigeria, experiences steady influx of vehicular movement on daily bases. The situation is made worse as a greater number of these vehicles are old and poorly maintained. This study therefore investigated the likely impact of high traffic volume along a... Read more.
DOI: 10.5897/AJEST2016.2140[Article Number: 19E18B761354]
Squatter developments are settlements predominantly composed of makeshift structures, often constructed on cheap or vacant land. Squatter development in Southern Aba Region of Nigeria constitutes nonconventional housing, constructed by the urban poor- predominantly the rural migrants and migrants from the main city of Aba, Port-Harcourt and Uyo. This study examined the determinants of squatter development in Southern... Read more.
DOI: 10.5897/AJEST2016.2127[Article Number: 223A8D960633]
The aim of this study was to assess the levels of some physico-chemical and microbial water quality parameters in fifteen hand-dug wells in Bolgatanga of the Upper East region of Ghana. The effects of seasonal variation and proximity to pollution sources on the concentrations of some parameters of the well water samples were analysed. The results revealed that, total and faecal coliforms in all fifteen samples exceeded... Read more.
DOI: 10.5897/AJEST2016.2163[Article Number: 6AA6F2E60635]
Inadequate information on physiochemical properties of faecal sludge leads to inappropriate design of pit emptying devices and poor faecal sludge disposal contributing to environmental pollution. This study undertook a critical analysis of physiochemical properties of feacal sludge that influence design and performance of pit emptying devices and faecal sludge disposal for improved faecal sludge management in urban... Read more.
DOI: 10.5897/AJEST2016.2153[Article Number: 917A01960639]
Domestic wastewater treatment using constructed wetlands have been found to be very efficient and cost effective. Primary treatment facilities such as anaerobic digesters have been reported to reduce the organic load of wastewater before entering the constructed wetland systems. It has also been established that biogas is a product of organic matter decomposition under anaerobic condition. In this study, we evaluated... Read more.
DOI: 10.5897/AJEST2016.2128[Article Number: EBF9C6560641]
This study presents a comparative investigation of atmospheric ventilation corridors and coefficients for gaseous pollution plume released from an isolated industrial facility into the ambient air of the host community in Ile-Ife suburb, southwest Nigeria. For the months of September to December in the year 2012 and 2013, measurement of surface layer atmospheric parameters made from an instrumented mast located near the... Read more.
DOI: 10.5897/AJEST2015.2036[Article Number: F4052F660884]
Hydrogeochemical evaluation of aquifers belonging to Chimakurthy granitic pluton complex reveals wide spatial and temporal variation in F- distribution. F- concentration in groundwater of different aquifers varies from < 0. 50 to 9.84 mg/l. Among three sampled episodes, the mean value of F- is high in July 2010 and 61% of samples have values above maximum permissible limit as per the Bureau of Indian... Read more.
DOI: 10.5897/AJEST2015.2126[Article Number: 7644A6360887]
This study assesses challenges of water supply to urban areas of Malawi since factors obstructing water availability, indicators of water service’s delivery, trend of tariff structure and cost recovery’s mechanisms and water governance in Malawi have been poorly assessed in the past despite the fact that the country has engaged itself in the improvement of urban water policy. The study was conducted in... Read more.
DOI: 10.5897/AJEST2015.2058[Article Number: 90F125859930]
This research work presents a study on the application of magnetic susceptibility measurements and geochemical analysis for mapping or assessing heavy metal pollution in the agricultural soil in road proximity. The research work was also done to check any runoff of heavy metals pollution to the Owabi dam which serves as the main water sources to catchment areas and the whole of Kumasi Metropolis. This research work was... Read more.
DOI: 10.5897/AJEST2016.2089[Article Number: 996FF9E59932]
Trials were conducted at the Cité-Verte domestic wastewater treatment station (Yaoundé-Cameroon) in order to assess the effect of three sewage sludge: Macrophyte ratios on the co-composting process and compost quality. The ratios were T1: 25 kg of plant material (Echinochloa pyramidalis) and 75 kg sludge; T2: 50 kg of plant material and 50 kg sludge, and T3: 75 kg of plant material and 25 kg of sludge. The... Read more.
DOI: 10.5897/AJEST2016.2157[Article Number: E7B317359934]
This work presents an assessment of geochemical toxic metal stocking in top-soil within the area of a limestone quarry in Gombe State. Samples of topsoil from the area of a limestone quarry in Gombe (North-eastern Nigeria) were collected to analyse levels of hazardous substances such as of Hg, Fe, Zn, Ni, Mn, Cu, Cr, Cd and Pb. A total of 24 topsoil samples were collected around the radius of 0.5 km from the blasting... Read more.
DOI: 10.5897/AJEST2016.2132[Article Number: 04AF23059936]
This study aimed to compare Community Managed Projects (CMP) approach with the conventional approaches (Non-CMP) in the case of Ethiopia. The data collection methods include a household survey (n=1806), community representative interviews (n=49), focus group discussions with district water experts (n=48) and observations of water systems (n=49). The data were collected from seven districts of two regions of Ethiopia.... Read more.
DOI: 10.5897/AJEST2016.2076[Article Number: A656C2160130]
The objective of the study was to measure concentrations of Cu, Ni and Zn in Spinacia oleracea cultivated at a site near the copper and nickel mine in Selebi Phikwe. The mean concentrations (in dry matter-basis) of Cu, Zn and Ni in the whole plant system were 7.30 ± 2.51, 6.02 ± 2.16 and 0.03 ± 0.02, mg/kg, respectively. Enrichment factors (EF) of Cu, Ni and Zn were far below the EF value of 1.5... Read more.
Page 1 of 41, showing 20 records out of 806 total, starting on record 1, ending on 20