African Journal of
Environmental Science and Technology

  • Abbreviation: Afr. J. Environ. Sci. Technol.
  • Language: English
  • ISSN: 1996-0786
  • DOI: 10.5897/AJEST
  • Start Year: 2007
  • Published Articles: 1070

AJEST Articles

Spatiotemporal variation of irrigation water quality at Bochessa Watershed in Central Rift Valley of Ethiopia

February 2020

Water quality is a highly concerning issue as long as irrigation is planned to be used for crop production. Hence, groundwater at Bochessa catchment was assessed to determine the spatiotemporal variability of its quality and to evaluate its suitability for irrigation. For this study, 8 boreholes were selected and sampling was done during the dry and wet seasons between 2015 and 2017. Totally 48 water samples were...

Author(s): Demelash Wendemeneh, Mekonen Ayana and Amare Haileslassie

Comparative study of physicochemical parameters of wastewater discharged at the beaches of the Dakar Coast

February 2020

The region of Dakar is characterized by a high population density often leading to a problem of development of the sewage network not equipped with a treatment station. The ejection of these raw untreated waters on the Dakar coast continually causes pollution of bays, seawater and threatens life in the aquatic environment and human health. The objective of this study is to assess the physicochemical quality of the...

Author(s): Dame Cisse, Birame Ndiaye, Momar Ndiaye, Ibrahima Diagne, Cheikh Tidiane Dione, Maoudo Hane and Abdoulaye Diop

Impacts of climate change on sorghum production in North Eastern Ethiopia

February 2020

Climate change/variability is a global concern that is seriously affecting developing and least developed countries which rain-fed based agriculture is predominantly the basis for  their livelihood and socio-economic system. Adverse impacts of climate change and variability, in most developing and least developed countries like Ethiopia, is growing in time and exert pressure on agricultural systems which changes...

Author(s): Eshetu Zewdu, Gebre Hadgu and Lisanework Nigatu  

Application of a decision support tool for municipal solid waste open dumps remediation in Cape Verde

February 2020

Open dumps are places where solid waste is disposed directly on the ground, without any environmental assessment, resulting in environmental, societal and economic damages.  In Cape Verde, most of the municipalities dispose their solid waste on open dumps. Cape Verde's new policies on solid waste management determined the closure and the remediation of all the dumps around the country. In this context, this...

Author(s): Ailton João Gonçalves Moreira, Juliano Cunha Gomes, Joana de Brito Mendonça and Armando Borges De Castilhos Junior  

Evaluation of stream flow under land use land cover change: A case study of Chemoga Catchment, Abay Basin, Ethiopia

January 2020

For human beings, land and water are vital. To enhance agricultural productivity and socio-economic development in the agricultural catchment, irrigation development is an important issue. The present study aims to evaluate the stream flow under land use land cover (LULC) change for surface irrigation in Chemoga catchment part of Abay River Basin. To accomplish the objectives of this study, the watershed model SWAT...

Author(s): Anmut Enawgaw Kassie, Tesfu Abebe Tesema and Negash Wagesho Amencho

Design and construction of fixed dome digester for biogas production using cow dung and water hyacinth

January 2020

Engineered biological systems used for resource recovery often utilize anaerobic digestion to treat organic wastes by reclaiming the carbon as energy (methane gas) and a soil amendment (biosolids). This study explored the production of biogas from co-digestion of cow dung waste and water hyacinth (Eichhornia crassipes) using anaerobic biological conversion. Cow dung and water hyacinth biomass feedstock were collected...

Author(s): Ajieh Mike Uche, Ogbomida Temiotan Emmanuel, Onochie Uche Paul, Akingba Olawale, Kubeyinje Bawo Frank, Orerome Owomwan Rita and Ogbonmwan Sunday Martin  

Agro-ecological assessment of physico-chemical properties of soils in Kulfo Watershed, South Western Ethiopia

January 2020

Variation in physical landscape of the highlands gives rise to variations in agro-climatic and soil parent materials in Ethiopia. The aim of this research is to characterize the physio-chemical properties of soils in Kulfo watershed. For the study, primary data from transect walks, composite soil samples and GPS points and secondary data from satellite imaginaries, National Metrological Agency and Central Statistical...

Author(s): Teshome Yirgu, Yibeltal Yihunie and Alemu Asele  

Management of world energy resources (Renewable energy): Choices for the future?

January 2020

Energy enables technical innovations, and progress in health, agriculture and transportation. Socio-economic development and energy production are linked, although some energy-rich countries are poor. Developed countries are the biggest consumers. Energy consumption increases with increase in world population. Fossil energies are dominantly consumed. Nuclear energies are often decried because of serious accidents....

Author(s): Gueye Moustapha

Active and passive air quality bio-monitoring in the tropics: Intra-urban and seasonal variation in atmospheric particles estimated by leaf saturated isothermal remanent magnetisation of Ficus benjamina L (Moraceae)

December 2019

Atmospheric pollutant emissions are likely to increase continously in developing cities like Abidjan (Ivory Coast) where air quality strategies are ineffective or not yet implemented. This could result in a big risk to human health. Local meteorological parameters can have both positive or negative effect on habitat quality depending on the biomonitoring approach used. This study investigates the sources and factors...

Author(s): N&#;guessan Achille Koffi, Kobenan Pierre N&#;Gouran, Yao Sadaiou Sabas Barima and Djédoux Maxime Angaman

Assessment of hydrological pathway and water quality of the songor wetland, Ghana

December 2019

Wetlands regulate sediment accumulation, minimize pollution load and act as a buffer against coastal erosion. However, the overflow of seawaters into closed lagoons and wetlands could cause an excessive build-up of solutes through evaporation and could threaten the health of the aquatic life. This study examined hydrological regime, water quality and spatial distribution of flora within the Songor Wetland, Ghana using...

Author(s): Klubi Emmanuel, Addo Samuel and Akita Lailah Gifty

Future evolution of surface temperature extremes and the potential impacts on the human health in Senegal

December 2019

Climate change impacts negatively vulnerable regions such as West African countries like Senegal, through an increase of climate extremes. The objectives of this study is to analyze the future evolution of the extreme temperature events and their impacts on human health in Senegal during the cold (DJF), hot (MAM) and wet seasons (JAS) under the greenhouse gas scenarios RCP4.5 and RCP8.5 using Climate projections of five...

Author(s): Sarr A. B., Diba I., Basse J., Sabaly H. N. and Camara M.  

Spatial patterns of climatic variability and water budget over Sudan Savannah Region of Nigeria

December 2019

The study examined the effect of climatic variability on climatic water balance over Sudan Savannah, Nigeria. Temperature and Rainfall data were collected for the period 1943-2012 from the Nigerian Meteorological Agency. The data were divided into two climatic years 1943-1977 and 1978-2012. On the whole, rainfall amount decreased from a very high mean value of 981.5 mm in Yelwa (Lat. 10.88 N; Long. 4.75 E) to a very low...

Author(s): Butu A. W. and Emeribe C. N.

Characterization of the development and productivity of Jatropha curcas L. plants according to provenance and tillage in Bargny, Senegal

December 2019

Among the crops that can potentially be used to provide the raw material needed for liquid biofuel production Jatropha curcas L. is the one that generates most interest in many development projects. The aim of this study is to evaluate the production and development of 3-year-old J. curcas L. seedlings in 2012. The results showed that after three years of planting, subsoiling and provenance have no effect on growth...

Author(s): Barro Lamine, Samba Ndiaye Arona Samba, Diatta MalaÑ—ny, Diop Babacar and Akpo Elie Leonard  

A chemical speciation study of selected heavy metals in aquatic bottom sediment samples from Mpenge stream, Musanze District, Rwanda

November 2019

Mpenge stream is regarded as one of the most important domestic water resource in Musanze District; Rwanda. The chemical speciation study of selected heavy metals (Zn, Cu, Co, Cr, Ni, Pb, and Cd) in sediment samples collected from that stream was carried out by means of an analytical procedure involving sequential chemical extraction method and to determine the heavy metals content in different fractions of sediment....

Author(s): Sibomana Jean Bosco, Habinshuti Janvier, Muhizi Théoneste, Safari Jean Claude and Mukarunyana Brigitte  

The roles of community-based water and sanitation management teams (WSMTs) for sustainable development: An example of the Bawku West District, Ghana

November 2019

Poor sanitation, water and hygiene are related to several and severe negative implications on health and the environment. In recent years, community-based management of water and sanitation facilities have been linked to improving access to these facilities. Ghana is also on its way to achieving the Strategic Development Goals (SDGs) for access to potable water. However, several studies have found gaps between increased...

Author(s): Samuel Kojo Abanyie, Boateng Ampadu, Zango Musah Saeed, Ebenezer Ebo Yahans Amuah, Nang Biyogue Douti, and George Owusu

Seasonal variations of some physico-chemical properties of water sources that feed Rivers Wouri and Meme of Cameroon

November 2019

Rivers Wouri and Meme are surrounded by streams and wells and serve for irrigation, fishing, domestic purposes and transportation. Water samples were collected from the rivers in February (dry season) and August (wet season) of 2012 at different sites and at different depths and analyzed for some physicochemical properties. This was to study the effect of seasonal changes on the properties and also infer the possible...

Author(s): Norbert Nkafu Fomenky, Aaron Suh Tening, Godswill Azinwie Asongwe, Kenneth Mbene, and Folep Fomenky Nka-Folep  

Occurrence, quantities and probable human health risks of indicatory polychlorinated biphenyls in processed Lates niloticus (L.) products from Lake Victoria in Tanzania

November 2019

A study was conducted in Lake Victoria to assess the occurrence, levels and risks of indicator polychlorinated biphenyls (PCBs) in four processed Lates niloticus (L.) products (salted-sundried, trims, smoked and deep-fried). Samples extractions were done using QuEChERS method while detection and quantification of congeners was done using a GC- ECD and GC- MS. Six PCBs (CB 28, CB 52, CB 118, CB 138, CB 153 and CB 180)...

Author(s): Alex Wenaty, Faith Mabiki, Bernard Chove, Anders Dalsgaard and Robinson Mdegela

Ecological assessment and economic valuation of three wetlands in eastern Hararghe, Oromia Regional State Ethiopia

October 2019

Globally, wetlands are recognized as the most productive ecosystems due to sustaining a wide range of biodiversity and for providing goods and services to nearby communities. The study was carried out in three wetlands in Ethiopia; namely, Adele, Teneke and Haramaya. The data was collected from January 2016 to May 2016 in the villages which are in proximity to the wetlands to determine the degree of dependency on the...

Author(s): Arayaselassie Abebe Semu and Tesfaye Mulye Workie  

Crude oil polluted soil remediation using poultry dung (chicken manure)

October 2019

Remediating crude oil polluted soil in developing countries by environment-friendly approach has attracted scientific interest.  Sampled crude oil and poultry dung were obtained from oil pit and farm in Warri, Delta State. 500 g/kg of crude oil polluted soil was weighed into four different containers labeled A, B, C and D; the soil was amended with the application of sundried poultry manure at various weights of...

Author(s): Oludele Olusanya Emmanuel, Ogundele Damilola Tope, Odeniyi Kayode and Shoyode Olayinka

Physicochemical quality of the groundwater perimeter of rice farms of Maga (Far North Cameroon)

October 2019

The rice-growing area of ​​Maga is located in the floodplain of Lower Logone. It covers an irrigable area of ​​more than 7000 ha of arable land. This area is indeed subjected to groundwater quality studies. Three campaigns of water sample studies were performed for one year in 15 points including nine boreholes and six domestic feed wells. Temperature, pH, EC, as well as Ca2+, Mg2+, Na+, K+, NH4+, HCO3-, NO3-,...

Author(s): Aguiza Abaï Emmanuel, Ombolo Auguste, Ewodo Mboudou Guillaume and Madi Ali  

The dynamics of pastoral mobility routes in relation to food security in semi-arid areas of Simanjiro and Handeni districts in Tanzania

October 2019

This study specifically examined the pastoral mobility routes in relation to food security in Simanjiro and Handeni districts. The pastoralists from Simanjiro district usually migrate to Handeni and other areas as a coping strategy. During the pastoral mobility the pastoralists face different problems such as food insecurity. The data were collected by using participatory geographic information system (PGIS) and the...

Author(s): Sixbert J. Msambichaka and Paul O. Onyango

Non-linear equilibrium and kinetic study of the adsorption of 2,4-dinitrophenol from aqueous solution using activated carbon derived from olives stones and cotton cake

September 2019

Olives stones and cotton cakes have been investigated as a cheap and available precursor used for the production of novel carbon using potassium hydroxide as chemical activating agent with 2:1 impregnation ratio at 1.5 M KOH. Carbonization was performed at 450°C for one hour. The activated carbons NOK and MK3 were characterized by Iodine Number, Fourier Transform Infrared (FTIR) spectroscopy, EDX Analysis, Scanning...

Author(s): Aurelien Bopda, Donald Raoul Tchuifon Tchuifon, Nche George Ndifor-Angwafor, Giscard Doungmo and Anagho Solomon Gabche,

Household perception and willingness to pay for improved waste management service in Mamfe, Cameroon

September 2019

Lack of financial resources and public participation are major factors that constrain solid waste management in many towns in developing countries. This study sought to determine the willingness to pay (WTP) and the perception of the inhabitants of Mamfe, Cameroon for an improved solid waste management system. A total of 371 households were interviewed and data analysis to identify the determinants of WTP values was...

Author(s): Veronica Ebot Manga, Oru Thompson Oru and Martin Ngwa Ngwabie  

Solid waste management in urban communities in Ghana: A case study of the Kumasi metropolis

September 2019

Globally, solid waste management has in recent times attracted massive attention, and one of the commonly cited areas is the sprawling cities and urban communities, where plastics and other solid waste have become major management challenge. In Ghana, solid waste management has become a major problem, particularly in urban settlements. The overall objective of the study was to investigate the key factors that underlie...

Author(s): Paul Sarfo-Mensah, Kwaku Obeng-Okrah, Albert Abraham Arhin, Theophilus Kwarteng Amaning and Richard Tetteh Oblitei  

Seasonal variability of rainfall and thunderstorm in Guinea over the period 1981 to 2010

September 2019

Republic of Guinea is one of the West African countries which share form a border with the southern part of the Sahel. It is located in the tropical area where the convective systems activities are intense with strong rainfall. Our results on Standardized Precipitation Index are coherent with the Sahel drought during the 1970s, and a recovery period of rainfall since the last years. The Standardized Thunderstorms Index...

Author(s): Ibrahima Kalil Kante,, Saïdou Moustapha Sall, Daouda Badiane, Idrissa Diaby and Ibrahima Diouf,

Effect of seed pre-treatment and its duration on germination of Detarium microcarpum (Guill. and Perr.)

August 2019

Detarium microcarpum Guill and Perr is a multipurpose tree species indigenous to semi-arid regions of Sub-Saharan Africa.  It is being exploited to local extinction due to high dependence for fuelwood and other uses. The present study explored different pre-treatment methods for enhancing seed germination and growth of D. microcarpum in the Guinea savanna zone of Ghana.  The experiment employed a 4 × 4...

Author(s): Bernard Nuoleyeng Baatuuwie, Latif Iddrisu Nasare, Adnan Smaila, Hamza Issifu and William Jasper Asante

Exergy consumption analysis of the transportation sector of Senegal

August 2019

Exergy analysis has become widely recognized and adopted as a powerful tool for physical and engineering systems analysis. In this paper, it was applied to transportation modes. Transport is second after the residential sector in Senegal when it comes to energy consumption and relies on imported fossil fuels. In 2013, it consumed around 32 PJ which represented 30% of total energy consumed in the country. Exergy use...

Author(s): B. F. Tchanche

Assessment of radiological risk from the soils of artisanal mining areas of Anka, North West Nigeria

August 2019

Assessment of radiological risk was carried out on twenty soil samples collected from agricultural, mining and mine processing areas in Anka, Zamfara State, North Western Nigeria. The measurement of activity concentration of 226Ra, 232Th and 40K was performed using the gamma-ray spectrometer equipped with a high purity germanium detector. The values of the activity concentration of 226Ra ranged from 24.69±4.26 to...

Author(s): Mbet Amos Akpanowo, Ibrahim Umaru and Shekwonyadu Iyakwari  

A view of road transport in Africa

August 2019

Transport sector is usually divided into four main modes: road, air, maritime and rail modes. In sub-Sahara Africa, road appears as the dominant mode. Railways were developed during the colonial period but almost abandoned since the independence in most countries. Air transport once seen as sign of economic prosperity and instrument of sovereignty is far from being competitive. Maritime transport is mainly on coastal...

Author(s): B. F. Tchanche  

Pit latrine faecal sludge solid waste quantification and characterization to inform the design of treatment facilities in peri-urban areas: A case study of Kanyama

July 2019

The purpose of the study was to quantify waste content in faecal sludge using an appropriate method and characterise the solid wastes inherent with the faecal sludge into categories. A total of eight (8) domestic pit-latrines were analysed in the peri-urban area of Kanyama settlement in Lusaka from July to October, 2018. From each latrine, three (3) samples were obtained for analysis of solid waste and sand/grit...

Author(s): James Madalitso Tembo, Richard Matanda, Ian Nzali Banda, Erastus Mwanaumo, Edwin Nyirenda, Mwewa Mambwe and Imasiku Anayawa Nyambe

Reported driving factors of land-use/cover changes and its mounting consequences in Ethiopia: A Review

July 2019

Obviously, there is land-use/cover change with multifaceted driving factors and associated adverse impacts out there in different parts of Ethiopia. Evidence from published journals justifies this fact but not yet compiled in a manner to convey information on the trend of change and its criticality with the aim to handle the problems. Thus, filing up all the driving factors and its adverse out come from different...

Author(s): Mathewos Muke  

Residues of the transformation of halieutics products: An alternative substrate for energy valorization of wastes by methanisation for a local sustainable development (preliminary results)

July 2019

The purpose of this study is to evaluate the biogas productivity potential of residues of the transformation of halieutics products. Experiments were conducted in two digesters of PUXIN model of 20 m3, where the temperature is 35°C. Multirae analyser was used to know the composition of biogas produced. A gas counter was also used for counting the amount of biogas produced during the experiment. There was also a...

Author(s): N. N. Kebe, P. A. Fall, D. Ndiaye and D. Diouf  

Balancing land management under livestock keeping regimes: A case study of Ruvu and Zigi catchments in Tanzania

July 2019

Land degradation has become a global concern that requires countries to take prompt actions. The objective of the study was to assess land management in respect to activities of livestock keeping in the Ruvu and Zigi river basins in Eastern Tanzania. The two basins attract a huge number of livestock from nearby and relatively distant areas in pursuit of pasture and water resources. The results indicated that modes of...

Author(s): Almas KASHINDYE, Richard GILIBA, Maximillian SEREKA, Damas MASOLOGO, Gertrude LYATUU and Mathew MPANDA  

Assessment of heavy metals [As, Cu, Zn] from boreholes in the Western Region of Ghana

June 2019

Ground water is the source of drinking water for many people around the world, especially in rural areas. A lot of parameters such as the concentrations of Arsenic, Copper, Zinc and other heavy metals in conjunction with other physico-chemical properties contribute to the suitability of water for drinking and for other purposes. This study was carried out in the Bibiani-Anhwiaso-Bekwai District of the Western region of...

Author(s): Nkuah M. and Agbemafle R.

Impacts of soil and water conservation practices on livelihood: The case of watershed in Gambela region, Ethiopia

June 2019

In this study, multistage sampling technique was used. 132 households were selected out of 2,943 households in three sampled kebeles (the lowest administrative structure in Ethiopia) of Godere Woreda (Woreda is administrative structure above Kebele). Household-based interview, key informants interview (KII) and transect walk were used in order to collect data. Practiced households have harvested an average of 44.74...

Author(s): Gatbel Chot, Awdenegest Moges and Amanuel Shewa  

Rural households’ access to water resources under climate impacts based on field evidence in Tigray Region, Ethiopia

June 2019

The climatic condition in Ethiopia is semi-arid and this has implications especially for rural communities in the country that are largely dependent on surface water. In water scarce areas across four districts in the Tigray region, a survey of 595 households was carried out, and two shared dialogue workshops was held. In this study, the following issues were examined: (i) Access to water in relation to sources,...

Author(s): G. Honor Fagan, Daniel Etongo,, Zenawi Zerihun and Kelemewerk Tafere

A 50-year review on heavy metal pollution in the environment: Bivalves as bio-monitors

June 2019

There has been a steady increase in the quantity and diversity of discharges that reach aquatic environment, both organic and inorganic, either synthesized or mobilized by man as a result of high population growth and development activities. This has led to the appearance of several types of pollution. Inland and coastal waters have been the most affected, since most major cities are located near water bodies....

Author(s): Fred A. Otchere  

Innovative pathways for enhancing climate change and variability resilience among agro-pastoral communities in semi-arid areas of Kiteto and Kilindi Districts, Tanzania

May 2019

Climate change and variability threatens food security globally making life uncertain mostly for agro-pastoral communities in semi-arid areas. This has necessitated exploration of designed pathways with potentials to increase resilience among agro-pastoralists. This work investigates agro-pastoralists’ innovative pathways for enhancing resilience to the impacts of climate change and variability in Kiteto and...

Author(s): Henry G. Mung’ong’o, Milline J. Mbonile and Faustin P. Maganga

An assessment of the contribution of fluvial sediment discharge to coastal stability: A case study of Western Region of Ghana

May 2019

Fluvial sediment discharge to coastal area contributes to the stability of the coast. Deposition of fluvial sediment discharge is an important source of beach nourishment, nutrient for aquatic ecology and habitats. However, human development and interventions on rivers in the form of dams and flood alleviation schemes tend to reduce fluvial sediment supply to the coast, thus impacting on coastal stability and...

Author(s): Boye Borkai Cynthia, Boateng Isaac, Appeaning Addo Kwasi and Wiafe George

Assessment of drinking water quality at Dodowa in the Dangbe West district of the Greater-Accra region, Ghana

May 2019

Dodowa serves as a major peri-urban community close to the Accra Metropolis with increasing population, urbanization and settlements. Lack of access to basic infrastructural facilities including water and sanitation has hampered the development of the community. Dodowa has irregular access to pipe-borne water therefore the community resorts to other means of getting potable water. It is against this background that this...

Author(s): W. E. Arko, I. O. A Hodgson and F. K. Nyame

Environmental assessment of tropical African mahogany (Khaya)

May 2019

In this study, life cycle assessment (LCIA) was used for the assessment and evaluation of the environmental performance of the Khaya lumber manufactured by three firms in Ghana. The work mainly aims to assess all possible effects to the environment, measure the carbon footprint for Ghana Khaya lumber and offer an Environmental Product Declaration (EPD) for Ghana Khaya lumber. The results show that the average...

Author(s): John Frank Eshun  

Household Willingness to Pay for Improved Solid Waste Management in Shashemene Town, Ethiopia

April 2019

  This study tried to investigate urban community’s willingness to pay for improved solid waste management. Double Bounded Dichotomous Choice technique was used to examine household’s willingness to pay for improved solid waste management. The collected data further analyzed Bivariate probit and logistic regression models to investigate the mean and factors determining willingness to pay for solid...

Author(s): Bamlaku Ayenew, Abera Tilahun, Solomon Erifo and Paulos Tesfaye

A critical look at the Ghanaian one district one factory industrial policy in relation to climate change

April 2019

This paper takes a critical look at Ghana’s one district one factory industrial policy in relation to climate change. This is important because climate variability and change as a result of industrialization can stand as hazard to impending advancement and expansion in Ghana. Industrial policy can contribute significantly to economic, ecological as well as communal sustainability. This paper aim to clarify the...

Author(s): John Frank Eshun

Comparativ e assessment of heavy metals in drinking water sources from Enyigba Community in Abakaliki Local Government Area, Ebonyi State, Nigeria

April 2019

This study assessed the levels of heavy metals in drinking water sources in Enyigba community in Abakaliki Local Government Area, Nigeria. Four sites were visited for sampling: two surface water (streams) and two underground water (boreholes). Three water samples were collected from each source making it a total of twelve water samples. The levels of Arsenic (As), Cadmium (Cd), Copper (Cu), Zinc (Zn) and Lead (Pb) were...

Author(s): Chinyere Aloke, Ifeanyi Ephraim Uzuegbu, Patience Nkemjika Ogbu, Emmanuel Ike Ugwuja, Onyebuchi Frederick Orinya and Ikechukwu Ogudu Obasi

Bushfires spread modelling over Malea in Northeastern Guinea

April 2019

Bush fires are increasingly becoming a threat to Guinean ecosystems and their understanding is a big challenge to scientists and environmental managers. Using the FARSITE model (Fire Area Simulator), this paper presents the prediction of the spread and characteristics of bush fires in the savannahs of North-eastern Guinea, specifically in Malea/Siguiri prefecture. Inputs, vegetation and topography dataset from satellite...

Author(s): Tamba Nicolas MILLIMONO, Daouda BADIANE, Moussa DIAKHATE, Alassane BAH, Saïdou Moustapha SALL, Ibra TOURE and Idrissa DIABY

Shared household septic tank: A case study of Fiapre in the Brong Ahafo Region of Ghana

March 2019

This study investigated the feasibility of utilizing composite septic tank to reduce cost, save space and prevent faecal related diseases. Survey research methodology was adopted based on people’s experience with septic tank, water use, soil properties, land space, user numbers and user satisfaction. The study also provides procedure in the design of a two-compartment septic tank with soil absorption field for...

Author(s): Francis Attiogbe, Andrews Nkansah and Francis Atta Kuranchie  

Effective solid waste management: A solution to the menace of marine litter in coastal communities of Lagos State, Nigeria

March 2019

Effective management of solid wastes is a goal that is yet to be achieved in many countries, even developed ones. In attempt to carry out a study on effective waste management system as a solution to the menace marine litters posed on coastal communities, three coastal areas in Lagos State Nigeria which are known for fishing, recreation, housing, and other various coastal activities were selected. Three groups of...

Author(s): Nubi Afolasade T., Nubi Olubunmi A., Laura Franco-Garcia and Oyediran, Laoye O.

Design, realization of a fixed bed downdraft gasifier and conduction of preliminary gasification tests with balanites aegyptiaca hulls, rice husk and charcoal

March 2019

This work is focused on the design and testing of a co-current fixed bed gasifier with two air injections. The electric power of the gasifier was set at 10 kW. The design is based on experimental data relating to specific gas production rate, engine power efficiencies, biomass flow rate, pyrolysis and reduction time etc. The gasification tests were conducted with rice husk, hulls of balanites aegyptiaca and charcoal....

Author(s): Ibrahim Harouna Gado, Oumar Sanogo, Tizane Daho, Balarabé Issa and Pakmogda Josué  

Modelling and simulation of atmospheric conditions impact on photovoltaic production in Saint Louis area

February 2019

In this study, we worked on the modelling and the simulation of atmospheric conditions impact on photovoltaic production in Saint Louis area. Using Ineichen's model based on the disorder factor of Link, an assessment of sunshine in the study area was made. A characterization of the irradiation is elaborated by modelling the radiation and by simulating outputs of a photovoltaic power plant. We can estimate aerosols...

Author(s): Abdoulaye Bouya DIOP, Bouya DIOP, Abdou Karim FAROTA, Ababacar THIAM, Aichetou DIA and Djiby SARR

Water quality problems, related challenges and their impacts on Ethiopian fishery

February 2019

The purpose of this review article is to explore the drivers of the water quality problems and associated impacts and mitigation schemes of the fishes and fisheries in Ethiopia. Data were obtained from both published and unpublished online documents as well as from different Ethiopian universities and institutions. The country has the potential to produce more fish yield (94, 500 ton/year. The published and unpublished...

Author(s): Agumassie Tesfahun  

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