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: 1014

AJEST Articles

Speciation of trace metal elements in sediments of Alibori River, North-West of Benin

March 2021

Alibori River located in northwestern Benin is subject to contamination by trace metal elements (TME: Zn, Cu, Pb, Cd) due to the use of agricultural inputs in its vicinity. This study focuses on the speciation of TME elements in the sediments of this river. The sediments were sampled during the rainy and dry seasons, dried, crushed and then sieved. The sediments were then mineralized and subjected to sequential...

Author(s): Nafiou E. Chitou, Waris K. Chouti, Jacques Kouazounde, Daouda Mama and Arthur R. Cakpo

Characterization of cyanobacteria microcystins (cyanotoxins) blooming in the Dams of Northern Morocco

March 2021

Cyanobacteria thrive in eutrophic freshwaters and impose a serious problem for the management of water bodies. Some Cyanobacteria species impose even a risk for public health due to the production of intracellular toxins. This study is a qualitative approach to determine the degree of toxicity and the toxicological aspect of cyanotoxins in order to setup a monitoring program for cyanobacteria blooms and the management...

Author(s): Mustapha Ouhsassi, El Ouardy Khay, Anass El Laghdach, Farid Ben Abdelouahab, Abdeltif El Ouahrani, Mohamed Idaomar and Jamal Abrini  

Variability of physiochemical properties of livestock manure with added wood shavings during Windrow Composting

February 2021

Composting livestock manure still remains one of the best waste-to-resource technologies practiced in the world. There is however, limited information on composting of livestock manure and wood shavings in Cameroon.  This research, carried out in South West Region of Cameroon assesses the variability of physiochemical properties: pH, pile temperature, mass, volatile solids contents (VS), total solids (TS) and total...

Author(s): Fabrice L. Yengong, Veronica E. Manga, Ngwa M. Ngwabie, David T. Tiku and Esongami N. Eric

Kinetics of phosphate adsorption by Ca/Cr layered double hydroxide

February 2021

Kinetics of phosphate adsorption by Ca/Cr layered double hydroxide (LDH) in a batch reactor was investigated in this study. The kinetic experiments indicated that the sorption of phosphate from the synthetic feed solution by the synthesised LDH was very fast, with over 98% removal being achieved within 5 min of contact. Kinetic modeling of the sorption process to different kinetic models (pseudo first order, pseudo...

Author(s): Adelagun R. O. A., Ushie O. A., Kamba A. E., Aikhoje E. F. and Egah O. G.

Cost minimization and operation optimization model for strategic waste management decision plans: A case study

February 2021

The design of a sustainable waste management system is pivoted on the ability to generate and compute real-time operational data for a strategic developmental decision plan. The real-time waste data generated at the University of Lagos Campus waste management system was used to develop a mathematical model with three operational indicators, namely, Total Cost Indicator (TCI), to show the overall daily cost for managing...

Author(s): Faith U. Babalola, AbdulGaniyu O. Adelopo, Boluwatito M. Aiyepola and Afolasade T. Nubi

Soil nematodes status of crude oil polluted sites in Bodo community, Gokana Local Government Area, Rivers State, Nigeria

February 2021

Crude oil spill destroys biodiversity and adversely impacts the physicochemical characteristics of the terrestrial and aquatic environments. The population characteristics of soil nematodes can serve as indicators of alterations in the terrestrial environment. To determine the effects of crude oil spillage on the soil nematode fauna status; a study was carried out at an impacted area in Gokana Local Government Area of...

Author(s): Osarokaka A. J., Nzeako S. O., Imafidor H. O. and Living-Jamala U.

Projected climate risks for rice crops in Casamance, Southern Senegal

February 2021

The climate risk concept is crucial for agricultural production in vulnerable regions. In this work the climate conditions that influence the climate risk for rice crop in Casamance are presented. The future occurrence of drought and extreme precipitation conditions in the most critical phases of the rice plant evolution has been evaluated. Regional climate models (RCMs) outputs projections from CORDEX under two...

Author(s): Samo DIATTA, Adama THIANDOUM, Mamadou Lamine MBAYE, , Alioune Badara SARR and Moctar CAMARA,

Impact of oil installations on groundwater resources in Bongor Basin, Republic of Chad

January 2021

This study examines concentration of pollutants that can contaminate soil, surface water and groundwater in the Bongor Basin. The analysis of thirty soil samples from six oil sites: Koudalwa, Ronier, Ndoubadana, Narenang, Croisement Baobab and Croisement Ridina was carried out using standard laboratory testing methods of chemical elements and pollutants. Results reveal that Nickel has a maximum concentration above the...

Author(s): SAMBA Koukouare Prosper, EWODO Mboudou Guillaume, DORIM Ngarbaroum, HAROUN Ali Adannou, HOULOULOU Nathan Koukouare and DANWE Raïdandi

Short-term response of flat tree oyster, Isognomon alatus to CO2 acidified seawater in laboratory and field experiments

January 2021

Seawater changing chemistry has consequences on coastal ecosystems and their living resources. Future projections suggest the pH could drop ~0.2-0.3 pH units by the year 2100 under a business-as-usual (BAU) CO2 emission scenario. Marine calcifying organisms such as corals, calcifying algae, crustaceans, mussels, oysters and clams are most likely to be impacted by ocean acidification. The Isognomon alatus (flat tree...

Author(s): Lailah Gifty Akita, Andreas Andersson, Houssem Smeti and Tiago Queiroz  

Knowledge and attitude of Khat growing farmers on the safe use and handling of pesticides in Haromaya Wereda, Oromia Regional State, Eastern Ethiopia

January 2021

The awareness level of the farmers growing Khat regarding the safe use of pesticide was investigated in this study at Haromaya Wereda, Eastern Ethiopia. In order to achieve the proposed objectives, structured questionnaires, oral discussions, and field observations were organized with the farmers growing Khat on the safe use of pesticide. After the study sites were selected purposively, systematic random sampling of the...

Author(s): Girma Regassa and Challa Regassa

Current situation of solid waste management in East African countries and the proposal for sustainable management

January 2021

Effects of unsustainable solid waste management are found all around the world but it is worse in developing and under developed countries like East African Community (EAC) countries. A big proportion of their solid waste is not properly managed. This paper highlighted the situation of solid wastes management in EAC countries and compared with other countries. More than 62.5% of generated solid waste in EAC is organic,...

Author(s): Gilbert Ntagisanimana, Ziqiang Yu and Hongzhi Ma

Residents’ perception of the effects of soot pollution in Rivers State, Nigeria

December 2020

Air pollution is a growing cause of morbidity and mortality globally. Nigeria is confronted with rising air pollution concerns due to activities of extractives, industrialisation and high population growth rate. Many areas of Rivers State, which provide 60% of Nigeria’s crude oil output, have recently been experiencing visible fallout of soot. To assess the perception of residents of Rivers State on the current...

Author(s): Mina Whyte, Tamuno-Wari Numbere and Kabari Sam,

Mining the past for a better future of African waters: Historical changes in the fish and fishery of Lake Bam (Burkina Faso) before rehabilitation

December 2020

Terrestrial waters provide multiple goods and services to human kind, but they have been severely diminished by increasing human exploitation of water and the landscapes surrounding aquatic communities. This research illuminates such dynamics in the recent history of exploitation of the Lake Bam fishery in Burkina Faso. To do so, from 2009 to 2015 we collected data on the ecology, exploitation and governance of the Lake...

Author(s): Raymond OUEDRAOGO, Komandan MANO, and Adama OUEDA

Spatio-temporal characterization of the physico-chemical quality of groundwater: Case of the Lobo watershed (Centre-west of Côte d'Ivoire)

December 2020

Drinking water supply to rural communities is increasingly relying on finding groundwater. However, groundwater resources, although believed to be safe and free of pollution, are subjects to local and diffusive pollution. This work aims at assessing the groundwater quality in the Lobo catchment area in Nibéhibé and addressing the mineralization phenomena. To achieve such an objective, a statistical...

Author(s): Kamenan Yiwa Monique, Dibi Brou, Eblin Sampah Georges, Konan Kouakou Seraphin, Kouassi Kouakou Lazare and Plagnes Valerie

Influence of particle size and total organic carbon on heavy metal concentrations in sediments of Lake Baringo, Kenya

December 2020

Heavy metals impair water and sediment quality and thus, can cause adverse impacts on aquatic organisms especially when they exceed the recommended threshold levels. Heavy metal concentrations in water and sediments are a reflection of the anthropogenic activities on the watershed as well as the geology of the area. Metal concentrations and subsequently their bioavailability are influenced by the sediment...

Author(s): Koskey J. C., Ogendi G. M., M&#; Erimba C. M. and Tamba C. L.

Carbon sequestration potential of disturbed and non-disturbed forest ecosystem: A tool for mitigating climate change

November 2020

Climate change is the severest environmental threat of the 21st century. The main factor responsible for the current pace of climate change is attributed to anthropogenic emission of greenhouse gases (GHGs), mainly carbon-dioxide (CO2). So, the aim of reducing carbon sources and increasing the carbon sink can be achieved by protecting the carbon pools. Forests are the largest carbon pool on earth as they hold more than...

Author(s): Rajeev Joshi, and Hukum Singh

Local perceptions and adaptation to climate variability and change: In the Bilate watershed

November 2020

In this study, farmers’ perceptions and adaptation options to climate variability and change were assessed in the Bilate watershed of south central Ethiopia. The determinant factors that influence the choice of farmers to climate change and variability adaptation were also investigated. Above 92% of the surveyed farm households perceived variability and change in climatic variables. Based on the data from 270...

Author(s): Getahun Garedew Wodaje, Zewdu Eshetu and Mekuria Argaw  

Qualitative and quantitative analysis of the pollutant load of effluents discharged Northwestern of Lake Tanganyika, in the Democratic Republic of Congo

November 2020

The qualitative and quantitative analysis of pollutant loads from effluents discharged into Lake Tanganyika has been studied, with a view to evaluate remediation strategies. The discharge of effluents into Lake Tanganyika calls for concern as it poses serious threats to the biological wealth of the lake. Physico-chemical and microbiological parameters were evaluated for pollution from the effluent source to Lake...

Author(s): Lumami Kapepula, Théophile Ndikumana, Musibono Dieu-Donné, Patricia Luis Alconero, Njoyim Estella Buleng Tamungang, Irene Tarimo and Bart Van der Bruggen  

Assessment of the heavy metal - levels in the incinerators bottom-ash from different hospitals in Dares Salaam

November 2020

Understanding content of bottom ashes from incinerator especially toxic heavy metals is an important step towards ash utilization. The aim of this paper was to evaluate heavy metals levels of in bottom-ash from hospital waste incinerators in four different hospitals in Dar es Salaam city (Muhimbili National Hospital and three regional referral hospitals Mwananyamala Ilala and Temeke) in Dar es Salaam city, Tanzania. It...

Author(s): A. Honest, S. V. Manyele, J. A. Saria and J. Mbuna

Assessment of the phytoremediation capabilities of bracken fern (Pteridium aquilinum) for the remediation of heavy metals (Pb, Ni and Cd) contaminated water

October 2020

This study was carried out to investigate the potential uptake of heavy metals (Pb, Ni, and Cd) by Pteridium aquilinum plant from aqueous solutions. The whole plant strands were cultured in 36 experimental pots containing 5, 10 and 15 (mg/L) of Pb2+, Ni2+ and Cd2+ aqueous solutions. The plants were harvested after 24, 48, 72 and 96 hours of exposure and segmented into leaves, stem and root, respectively. The heavy...

Author(s): Oshiotse Anita Emashogwe, Inengite Azibaola Kesiye, Godwin Jackson and Ugbome Isaac

Occurrence dynamics of nitrogen compounds in faecal sludge stabilisation ponds in the Tamale Metropolis, Ghana

October 2020

Faecal sludge, with richness in soil nutrients represents an important resource for enhancing soil productivity. In this study, the occurrence dynamics of nitrogen compounds NH3, NO2- and NO3- in engineered waste stabilisation ponds in the Tamale metropolis was monitored for 5 months in the dry season. Four treatment ponds were divided into three units: Influent point, midpoint and effluent point for sampling purposes....

Author(s): Abagale Felix K., Osei Richard A. and Kranjac-Berisavljevic G.

Assessment of air pollutant emissions from healthcare waste incinerators of different design features

October 2020

The aim of this paper was to e valuate the levels of gaseous emissions from four different healthcare wastes incinerators in three regional hospitals and one national hospital in Dar es Salaam, Tanzania. The incinerators studied differ in terms of capacity (kg/h) and design features. Five gaseous air pollutants (CO, CO2, NOx, and SO2) were analyzed in the sampled flue gases using a portable desktop combustion gas...

Author(s): Anicetus Honest, Samwel Manyele, Josephat Saria and Julius Mbuna  

Advancing climate change adaptation in Uganda’s agricultural programming for sustainable development: Key milestones and constraints

October 2020

Climate change remains a crucial threat to sustainable development, particularly to the farming communities, which are more vulnerable to climate impacts. Uganda has made commendable steps in building an institutional framework for addressing climate change. However, the framework remains scattered in several documents making it difficult to track and conceptualize. This paper provides a one-stop center for...

Author(s): Fred Alinda, David Ssekamatte, Ezekiel Kisambira and Anthony Kagoro  

Bamboo diversity and carbon stocks of dominant species in different agro-ecological zones in Cameroon

October 2020

Bamboo is of ecological and socio-economic importance in the world. However, knowledge on its potential in climate change mitigation remains superficial in Cameroon. The present study identified bamboo diversity and estimated carbon stocks of the dominant species in Cameroon. Ground truth method and local informants were used for a bamboo species survey in five Agro-ecological zones (AEZs). Twenty-two circular plots of...

Author(s): Barnabas Neba Nfornkah, Kaam Rene, Zapfack Louis, Tchamba Martin and Chimi Djomo Cedric

Assessment of chitosan – coated Aspergillus–niger as biosorbent for dye removal and its impact on the heavy metal and physicochemical parameters of textile wastewater

September 2020

Efficiency of biosorbent from chitosan coated dead fungal biomass of Aspergillus niger for dye removal with its impact on metals and physicochemical parameters of textile industry wastewater were assessed. Dye and metal concentrations of wastewater were determined using UV and Atomic Absorption Spectrophotometers respectively, before and after column biosorption using simulation optimized parameters with biosorbent....

Author(s): Aderonke Adetutu Okoya, Adetunji Adenekan, Fatimah Adenike Ajadi and Somoye Oluwaseun Ayodele  

Assessment of the health impacts of WASH interventions in disaster-prone communities in three regions of Northern Ghana

September 2020

This study evaluated the health impacts of WASH interventions in 9 intervention communities against 9 control communities in disaster-prone areas in northern Ghana. We extracted community-specific data on patient-reported cases of WASH-related diseases from health facilities in the study areas. Also, we used key informant interviews and household questionnaires to seek information for validation. The impact was measured...

Author(s): Eugene Appiah-Effah, Gideon Sagoe, Kobina Mensah Afful and Dwuodwo Yamoah-Antwi

Effect of agitation on the process of bi methanization of sludge from low-temperature wastewater treatment plants

September 2020

Wastewater treatment is a serious environmental problem, especially in developing countries such as Morocco. Their discharge into the natural environment has negative impacts on water resources and the environment. They are therefore purified to reduce the concentration of the main pollutants. Often biological remediation is used when wastewater contains biodegradable organic pollutants. This generally leads to treated...

Author(s): Soukaina Aitlahyane, Zehor Aityacine, Brahim Lekhlif and Hafida Hanine

An appraisal of high definition survey approaches in subsidence monitoring of crude oil storage tanks

September 2020

Vertical and horizontal motion of the solid earth surface due to geological and geodynamical phenomena are generally consequences of terrain deformation. Variations as a result of the deformation affect structures, particularly large storage facilities that are steel and/or concrete in nature. The criticality of these phenomena underscores the need to carryout regular measurements and monitoring of its effect in all...

Author(s): Hart Lawrence and Udeh Kenneth

Irrigation water quality analysis of Mitheu Stream in Machakos Municipality, Kenya

September 2020

Water samples for physico-chemical, heavy metals and bacteriological analyses were collected from 4 selected points along Mitheu Stream flowing through Machakos Municipality once every month from June 2019 to September 2019. The samples were analyzed in Kenya Plant and Health Inspectorate Service and Water Resources Authority laboratories then data subjected to one-way analysis of variance to test significant...

Author(s): Linge Kitulu, Julius Kioko Nzeve, Fuchaka Waswa, Esther Kitur and Douglas Shitanda  

Urban climate variability trend in the coastal region of Mombasa Kenya

August 2020

The world population in global south countries is increasing. This fast growth has heightened urban ecological footprint that contributes to anthropogenic forcing triggering of the climate system. From this study, climate variability trend dynamics in Mombasa County, a coastal urban area in Kenya was examined. A retrospective study was done (1989-2019) to determine the changes in temperature and rainfall in the area of...

Author(s): Innocent Osoro Ngare, James Kibii Koske, John Njagi Muriuki, Evelyn Wemali Chitechi and George Njagi Gathuku  

Statistical modeling of diesel leaching rate in soils at base transceiver stations

August 2020

The process of modeling contaminant volume, rainfall intensity, and soil depth was investigated on diesel leaching and retention in soil subjected to oil pollution from five Base Transceiver Stations. The experimental runs were carried out over three operating parameters which include contaminant volume (50-350 ml), rainfall intensity (5- 10 mm/h), and soil depth (30 - 90 cm) using Response Surface Methodology. Among...

Author(s): Theophilus O. N., Akaranta O. and Ugwoha E.

Greenhouse gas reduction and cost-benefit through improving municipal solid waste management in Ouagadougou

August 2020

Waste management is one of the major challenges of urban management in Sub Saharan African countries. The current difficulties in the management of solid waste are the result of poor mastering of concepts, approaches, and techniques. This paper aims to study the Greenhouse gas reduction and cost-benefit through improving municipal solid waste management in Ouagadougou. Since the site location is important for collection...

Author(s): Steve-Harold Wendkuuni Kaghembega, Qin Xia, Sha Chen and Song Chaofei  

Possibility of improving solid waste management in senior high schools in the Ashanti region of Ghana

August 2020

Little attention has been given to solid waste management in Senior High Schools meanwhile their population and consumption pattern keeps on increasing. The study was conducted in senior high schools within the Ashanti Region to determine the composition and generation rate of solid waste in the selected senior high schools. An extensive field investigation was used for quantification and analysis of the composition of...

Author(s): Richard Amankwah Kuffour  

Comparison between real and label content of different bottled water brands from Saudi Arabia and other international countries

July 2020

For consumers, the water composition is indicated on a label attached to the water bottle. Reports about wrong label information were the motivation for this comparative study of the real content of 20 different bottled water brands from Saudi Arabia and 19 other brands from different countries in Asia, Oceania, Africa, and Europe. The pH, total dissolved salt (TDS) concentration, and concentrations of nine cations and...

Author(s): Anas S. Dablool  

Air quality in city centres: The transportation effect in Minna metropolis Chanchaga Local Government Area, Niger State Nigeria

July 2020

This study is aimed at assessing ambient air quality in city centres, in Minna metropolis, Niger State, North-Central part of Nigeria. Thirty points of commercial transportation locations within the city centre were considered, three thousand observations of CO, CO2, LEL, H2S and O2 were collected at different West African time (6 am, 8 am, 10 am, 12 noon and 6 pm) during the wet season in 2018 and analysed. Instruments...

Author(s): Okobia Efegbidiki Lympson and Abdul Husaini  

Oil and gas exploitation in the Ghanaian context: The balance of benefits and challenges

July 2020

This study investigated the benefits and challenges associated with oil and gas exploitation from the Ghanaian perspective. A case study design that embraced both quantitative and qualitative methodologies was adopted for the study. Communities close to the oil and gas  production area (that is, the Jubilee Oil Field) were specifically targeted as the study population. The population covered three communities;...

Author(s): Jones Lewis Arthur and Chantel Amo-Fosu

Quantifying forest cover at Mount Kenya: Use of Sentinel-2 for a discrimination of tropical tree composites

June 2020

The aim of the present study is to test ESA’s Sentinel-2 (S2) satellites (S2A and S2B) for an efficient quantification of land cover (LC) and forest compositions in a tropical environment southwest of Mount Kenya. Furthermore, outcome of the research is used to validate ESA’s S2 prototype LC 20 m map of Africa that was produced in 2016. A decision tree that is based on significant altitudinal ranges was used...

Author(s): Jonas Fierke, Martin Kappas and Daniel Wyss  

Physicochemical influence on the spatial distribution of faecal bacteria and polychaetes in the Densu Estuary, Ghana

June 2020

Coastal ecosystems are increasingly impacted by man-made disturbances including pollution from agriculture, aquaculture and municipal waste. This study employed multiple ecological indicators to assess environmental quality of the Densu Estuary and understanding of environmental controls on the spatial distribution of organisms. Physicochemical parameters were measured in situ. Water and sediment samples were collected...

Author(s): Akita L. G., Laudien J., Akrong M., Biney C., Nyarko E. and Addo S.

Molecular characterisation of bacteria strains of septic tank sewage samples from related sites in Delta and Edo States of Nigeria using 16S rRNA denaturing gradient gel electrophoresis (DGGE)

June 2020

The molecular characterization of raw septic tank sewage in the region under study was evaluated using 16S rRNA denaturing gradient gel electrophoresis (DGGE). Raw effluent samples from three septic tanks in the Delta and Edo States region of Nigeria was collected between November 2018 and January 2019 for testing. A composite sample was formed from the three samples collected. The raw sewage sample was sequenced for...

Author(s): Oyem, I. M. and Oyem, H. H. and Atuanya, E. I.  

The mediating effect of effective decision making on the design of water resource management ICT model: The case of the management of Lake Victoria Basin

May 2020

Partial Least Square-Structural Equation Modelling (PLS- SEM) technique was employed to evaluate the mediating effects of effective decision making on water resource management policies and water resource management frameworks in the design of water resource management ICT model for an integrated water resource management of Lake Victoria Basin (LVB). Researchers took a quantitative approach using smart-PLS version 3....

Author(s): Godfrey Odongtoo, Denis Ssebuggwawo and Peter Okidi Lating  

Assessment of agricultural practices on water quality of the Tono Dam in the Upper East Region of Ghana

May 2020

Population growth has resulted in drastic increase in demand for agricultural products for consumption and also as raw materials for agro-based industries. Associated with this increased demand is the application of agrochemicals to increase yields. This study assessed the impact of agricultural practices employed by farmers in the Tono catchment in the Upper East Region of Ghana on water quality. The study involved a...

Author(s): Melvin-Guy Adonadaga, Cornelius Frimpong, Boateng Ampadu, Rahinatu Alare and George Owusu  

Factors affecting the development of effective water resource management policies: The case of the management of Lake Victoria Basin in Uganda

April 2020

Partial least square-structural equation modelling (PLS-SEM) was used to evaluate the factors affecting the development of effective water resource management policies.  Researchers employed a purposive sampling method to come up with the most suitable respondents. The sample size of 152 respondents was computed from a population size of 245 water experts within Lake Victoria Basin (LVB) in Uganda.  The...

Author(s): Godfrey Odongtoo, Denis Ssebugwawo and Peter Okidi Lating  

The impact of sea water intrusion on the spatial variability of the physical and chemical properties of ground water in Limbe-Cameroon

April 2020

A significant proportion of the population of Limbe, a coastal town in Cameroon, relies on ground water (gw) to satisfy their drinking water needs. The coastal aquifer is threatened by pollution from sea water intrusion and hence the aim of this study was to determine the suitability of the water. Physico-chemical analysis were carried out on samples collected from the study area and the Revelle Index was calculated and...

Author(s): MOTCHEMIEN Rigobert and FONTEH Mathias FRU  

Land capability analysis and delineation of erosion prone areas in the case of Kulfo Watershed, Abaya Chamo Basin

March 2020

Land is a basic natural resource which is essential for the survival and development of human being, since it supports all kind of livelihood and infrastructure. But due to varying drivers it is under the threat of degradation. Thus, the aim of this research was to analyze the land capability and delineation of erosion prone areas for sustainable watershed management in the case of Kulfo watershed located in the Abaya...

Author(s): Teshome Yirgu, Yibeltal Yihunie, Alemu Assele and Teklu Wogayehu

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

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  

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  

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

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

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