Evaluation of toxic chemicals and physicochemical parameters in water supply systems operated by Ayateke Star Company Limited in Gatsibo district and compliance with National and World Health Organization (WHO) standards
November 2025
Ensuring safe drinking water is critical for public health, particularly in rural supply systems where water treatment and monitoring may face operational challenges. This study evaluates the concentrations of selected toxic chemicals -Aluminium (Al³?), Nitrate (NO??), Ammonia nitrogen (NH?–N), Copper (Cu²?), Manganese (Mn²?), Fluoride (F?), Phosphate (PO?³?), and Iron (Fe²?/Fe³?) in...
Comparison between briquettes from different combinations of teak plantation by-products and charcoal sample
November 2025
Teak plantations generate each year large quantities of residues, including the first thinning wood and foliage. These by-products can be valorized as fuel to create added plantations and serve as adiversified cooking energy source. This study contributes to the diversification of green energy sources. The objective was to analyze and compare the energy characteristics of briquettes produced from different combinations...
Prevalence and identification of toxigenic fungi in maize grains in warehouses in Mali
November 2025
Mycotoxins are natural contaminants produced by micromycetes, filamentous fungi (molds) that can develop on plants in the field, or during the drying and storage of cereals and other agricultural products. This research was conducted to monitor the toxigenic fungi and toxin contamination of maize stored on the market in Mali. Few studies have been carried out on mycotoxins contaminating maize in storage warehouses....
Assessment of the contamination of Lactuca sativa by metal trace elements
November 2025
In recent years, the contamination of market garden produced by trace metals has become a growing public health concern. This study investigates the effect of two different irrigation methods on the bioaccumulation of trace metals in lettuce (Lactuca sativa) cultivated near Lake 5 in Yamoussoukro, Ivory Coast. The first method involved the use of lake water for irrigation, while the second relied on well water drawn...
Salinity and toxic metal levels in soils and water of the Golinga and Bontanga irrigation sites, Northern Ghana
November 2025
Understanding and evaluating hazardous metal and salt contamination in soil and water is critical for long-term agricultural development and food safety. This study investigated the salinity levels, toxic metal concentrations, and health risks associated with water and soils from the Bontanga and Golinga irrigation sites. Each site was divided into two topographic zones: ten surface (0 to 15 cm) and ten sub-surface (15...
Gender inclusion and implications for sustainable management of forest resources in Yumbe District, Northwestern Uganda
October 2025
Numerous studies examining gender roles in sustainable management of forest resources (SMFR) have shown that women's engagement adds a new dimension to the equation. However, their effective participation is still low, largely due to gendered subordination. To ascertain women’s potential in sustainable forest management in Yumbe district, this study examined the conventional roles of both genders. Random...
Assessment of land-use land cover change and its drivers in the Upper Mono Basin valley in Togo
October 2025
Assessing land use and land cover changes (LULCC) is essential for the sustainable management of natural resources. This study assesses the dynamics and drivers of LULCC over a 31-year period (1991 to 2022) in the upper Mono basin valley (UMBV). The study used Landsat images to perform the LULC classification using the Random Forest algorithm and survey data from 399 individuals to analyse LULCC and its drivers from...
Using the Mann-Kendall trend analysis test to investigate the monthly and annual rainfall trends of seven locations along the Volta Lake and some tributaries
October 2025
The study investigated the impact of climate change on rainfall trends in Adidome, Akatsi, Akosombo, Akuse, Ho, Kete-Krachi, and Sogakope using the Mann-Kendall trend analysis test. Rainfall data for 33 years, ranging from 1990 to 2022, was obtained from the Ghana Meteorological Agency. The data was analysed to determine monthly and annual rainfall trends for the seven locations. For the monthly rainfall, Adidome,...
Evaluation of demand-side thermal coal quality assurance in a bituminous coal-fired power station and implications for greenhouse gas emissions
October 2025
The paper demonstrates a set of rapid tests that can be easily conducted at coal-fired power stations (CFPSs) to ensure the quality of thermal coal, which is crucial for efficient power generation and emissions reduction. The researchers performed proximate and chemical analyses on coal samples obtained from a conventional CFPS that operates on bituminous coal. They also conducted similar chemical analyses on coal ash...
Recyclability of paper waste: A Confederation of European Paper Industries (CEPI)-based evaluation of mixed office waste and old packaging material in Nairobi, Kenya
October 2025
Efficient recycling systems are quite critical in managing paper waste more sustainably in growing urban centers. Despite the rising demand for paperboard and recycled packaging, improved processing technology for handling poor and heavily polluted waste paper remains limited in developing countries like Kenya. This study investigates the potential for recycling two major paper waste streams: mixed Office Waste (MOW)...
Navigating the clean cooking transition in Uganda: Assessing awareness, accessibility, affordability, and performance of improved cook stoves and clean fuels
October 2025
Uganda’s heavy reliance on biomass for cooking poses severe environmental, health, and socio-economic challenges, despite national and global initiatives promoting cleaner alternatives. This study assesses the awareness, accessibility, affordability, and performance of improved cook stoves and clean fuels at household and institutional levels across Uganda. Using a mixed-methods design (789 surveys, 40 key...
Assessment of aquatic macroinvertebrates in the Tungu Stream, Tharaka Nithi County, Kenya
September 2025
Data on biodiversity loss in freshwater and aquatic ecosystems in Africa is lacking, and riverine biodiversity remains undocumented. This study provides a baseline assessment of aquatic macroinvertebrates in Tungu stream, a tributary of the Nithi River in Kenya. Sampling was conducted over a nine month period across the upper, middle, and lower courses of the stream using a Surber sampler, with a total of 27 samples...
An earth-eco socialist approach towards sustainable e-waste management in Lagos State
September 2025
Electronic waste (e-waste) poses an escalating threat to both human and environmental health in Nigeria, particularly in Lagos State, which has become a major hub for the accumulation and informal processing of used electronics. This paper investigates the structural drivers, health risks, and governance failures surrounding e-waste in Lagos and proposes an ethical alternative grounded in Earth-Eco-Socialism. Using a...
Assessment of soil quality in mining areas: Cross-analysis of environmental impact assessment (EIA) and field data in Kedougou, Senegal
September 2025
Soil contamination remains a critical yet often underestimated challenge in environmental impact assessments (EIAs) of mining projects in West Africa. This study assessed soil quality across 37 industrial and artisanal gold mining sites in the Kédougou region of Senegal. A Mining Soil Quality Index (MSQI) was developed, integrating heavy metal concentrations (As, Pb, Hg, etc.) with international and regional...
Environmental risk assessment of potential heavy metal contamination on mining and irrigable lands in the Upper East Region of Ghana
September 2025
The study was conducted to assess the extent of heavy metal contamination from mining and irrigated lands in selected districts of the Upper East Region, Ghana. Heavy metals such as Cu, Pb, Cd, Cr, Co, and Hg were determined by atomic absorption spectroscopy. Ecological risk assessment used included the contamination factor, geoaccumulation index, pollution load index (PLI), and enrichment factor in soils and plant...
Geospatial assessment of agricultural land expansion and its impact on biodiversity: A systematic review
August 2025
Agricultural land expansion remains one of the most significant drivers of biodiversity loss globally. Geospatial approaches among other tools can support researchers in understanding the complex impacts of this loss. This systematic review critically analyzes recent scientific advancements in remote sensing, land-use transitions, climate-smart agriculture, and policy frameworks to assess the relationship between...
Comparative analysis of wood fuel energy use in tea processing factories in Rwanda
August 2025
Tea processing in key producing countries such as Kenya, Sri Lanka, and Rwanda remains heavily reliant on wood fuel, particularly for withering and drying stages. Wood fuel poses significant sustainability challenges despite its widespread use, including deforestation, low energy efficiency, and rising production costs. In Rwanda, where tea is a major export commodity, the inefficient use of wood fuel in processing...
Geospatial land cover change analysis using the CA-Markov chain model in Chikwawa District, Malawi
August 2025
Chikwawa District has experienced significant urban development, agricultural expansion, and population growth over the years. The study analyzed Landsat Satellite images from 1979, 1995, 2009, and 2023 to assess land use and land cover changes. The CA-Markov chain model, a spatially explicit model that integrates cellular automata and Markov chains, was applied to predict future land use and land cover (LULC) scenarios...
Perceived health risk associated with living in close proximity to waste disposal site: The case of Dompoase landfill, Kumasi
July 2025
Many countries in Africa have poor solid waste management systems, which pose health risks to people living in close proximity. This study aimed to map the boundaries of the Dompoase landfill site in Kumasi, conduct proximity analysis using a geographic information system (GIS), and investigate perceived health risks associated with living nearby. A total of 400 questionnaires were randomly administered to residents of...
Farmers practices, pesticide use, pest and disease dynamics in smallholder potato farming systems in Kuresoi South, Nakuru, Kenya
July 2025
Globally, potato farming faces various challenges, such as pest infestations, diseases, and environmental risks associated with pesticide use. This study assessed farmers' practices, pesticide use, disease, and pest incidence using a questionnaire administered to 31 respondents. The respondents, 77% of whom were aged between 36 and 60 years, had diverse educational backgrounds and occupations. Ten diseases were...
Assessment of physicochemical water quality in the Sangomar marine protected area before oil exploitation of the Sangomar offshore field, Senegal
June 2025
The Sangomar Marine Protected Area (MPA), located approximately 50 km from the Sangomar oil field, has raised concerns regarding the potential impact of oil activities on its resources. This study aims to determine the quality of the MPA's waters prior to the commencement of oil exploitation. Samples were collected at three locations of ecological importance and accessibility (Bakina, Sofna, and Djiffer) during both...
Design articulation of open spaces in metropolitan Lagos, Nigeria
May 2025
The study discusses the concept of universal design, which emphasizes creating spaces accessible to all, irrespective of abilities or disabilities. However, in metropolitan Lagos, Nigeria, numerous public open spaces pose challenges for physically challenged individuals due to inadequacies in design solutions. This deficiency hampers their participation in public activities. The study focuses on devising lasting design...
Systematic review on ethics of landscape design practice in the built environment
May 2025
This study explores the ethics of landscape design within the built environment, emphasizing the importance of creating spaces that are equitable, sustainable, and culturally sensitive. Ethical considerations in landscape architecture primarily focus on social justice, environmental stewardship, and cultural integration—key elements for developing urban spaces that are not only visually appealing but also...
Use of bacteria with PGPR activity to improve tomato growth and yield of tomato plants
May 2025
Tomato (Lycopersicon esculentum Mill.) cultivation in Mali is confronted with multiple constraints of various kinds that greatly reduce yields. These include nutrient deficiencies (N, K, and P) in agricultural soils, inadequate supply of nutrients, and multiple insect and disease damage that can destroy up to 100% of production. A possible and proposed solution that has already proved its worth worldwide is the use of...
Optimization of biogas production from potato peels and fish waste using MATLAB
April 2025
This study explores biogas production from potato peels and fish waste using anaerobic digestion, combining mathematical modeling, experimental analysis, and computational optimization. A Monod kinetics-based model was developed to describe substrate utilization, microbial growth, and biogas production, incorporating variables like temperature and pH. MATLAB simulations validated the model against experimental data from...
Evaluation of surface water quality for domestic and agro-industrial applications along the tropical rainforest gradient, central Cameroon
March 2025
The primary water supply to the inhabitants of the tropical rainforest is surface water with limited water quality data. A hydrogeochemical study was conducted to identify the processes that control surface water chemistry and to examine the quality of water sources for domestic and agricultural purposes. In the two seasons, fifty-six water samples were collected from rivers within the study area. The primary ions and...
Growth response of anguillid eels in two Kenyan rivers with varying levels of habitat integrity
March 2025
Eels of the genus Anguilla have a unique life cycle that involves long migrations between freshwater and marine environments, making a significant contribution to biodiversity and fisheries. This study examined the growth and health of Anguillid eels in two Kenyan rivers with differing habitat integrity; the Ramisi and the Athi-Galana-Sabaki (AGS) Rivers. Four species which are the Anguilla bengalensis, Anguilla...
Water quality analysis in Manoka Island and Youpwé, Douala, Cameroon: Hydrogeochemical and bacteriological perspectives
March 2025
This study investigates the water quality of surface and groundwater sources in Manoka Island and the Wouri estuary (Youpwé), areas significantly impacted by urbanization, industrial activities, and agriculture. Physicochemical parameters (pH, EC, TDS, temperature, and salinity) were measured on-site, and 50 samples (13 boreholes, 29 hand-dug wells, and 8 surface water) were analyzed for major ions using...
Calibration of the Hargreaves and Priestley-Taylor equations for estimating reference evapotranspiration in the Densu River Basin in Ghana
March 2025
Reference evapotranspiration (ETo) defines the maximum evapotranspiration that can occur in a basin. Its accurate estimation is therefore very important in accurately estimating how much water is available in any Basin for use since the actual Evapotranspiration (AET) that occurs depends on the ETo estimated. AET is a parameter that is difficult to measure on the field and therefore is mostly estimated from ETo....
Impacts of climate change on water resources in the N'zi watershed in Côte d'Ivoire
February 2025
For several decades, the N'zi region has been experiencing increasing climatic disturbances, characterized by decreasing rainfall, increasing droughts, and growing anthropogenic pressures such as urbanization and land-use changes. This study aims to analyze the impacts of climate change on water resources in the N'zi watershed in Côte d'Ivoire. The data used for this research includes rainfall,...
Situating environmental degradation in Ogoniland, Niger Delta, Nigeria, within an environmental justice framework
February 2025
The Niger Delta, Nigeria's oil-rich region, has been subject to environmental degradation and neglect despite being the country's largest oil producer. The Ogonis are a minority ethnic group within the Niger Delta region. Due to the abundance of crude deposits, their land has been a beehive of oil exploration since the discovery of crude oil in Nigeria in the late 1950s. This subregion is also the most affected...
Farmers’ vulnerability to climate variability and extreme climate events in selected agro-ecological zones in Kitui County, Kenya
February 2025
A field survey was conducted in Kitui County, Kenya, to assess farmers’ vulnerability to climate variability and extreme climate events in selected agroecological zones. Primary data was collected through the administration of questionnaires to 341 respondents. Rainfall data for the study was obtained from the Climate Hazards Group Infrared Precipitation with Stations (CHIRPS) rainfall dataset while temperature...
Analysis of pesticide use in farming practices in Northern Cameroon
February 2025
This study aims to contribute to a reduction in the health and environmental risks associated with the use of chemical pesticides. Three hundred farmers, stockbreeders, and agro-pastoralists were selected and surveyed in a reasoned manner in the Departments of Benoue, Faro, Mayo Rey, and Mayo Louti. Twenty-four pesticides were identified as the most widely used, along with herbicides. Some turn out to be counterfeit...
Urban territorial regionalisation and the emergence of un-ecological rural urbanism in city localities: Case of Dodoma national capital city, Tanzania
January 2025
This study explored how the evolutionary transformation of administrative hierarchical positions in agrarian urban authorities (urban territorial regionalization) has contributed to the growth of unsustainable rural urbanism in urban areas of Tanzania. This shift has further reinforced rural characteristics in urban settings rather than fostering the modernization of towns by urban standards. Empirical evidence for the...
Methane Production from the Digestion of Different Livestock Manure and Co-digestion with Waste Water from Palm Oil Production
January 2025
The generation of renewable energy from the digestion of biodegradable waste is one of the favoured waste management options as it also mitigates climate change by reducing greenhouse gas emissions. The energy produced can be enhanced through co-digestion of different types of wastes. The study was aimed at quantifying methane production from the digestion of different livestock manure and their co-digestion with waste...
Climate change awareness among Kenyatta University undergraduates, Kenya
January 2025
Climate change necessitates collective efforts to mitigate its effects. Public understanding of climate change is crucial for meaningful action. Youths play a vital role in climate action, but their knowledge of climate change remains limited. University students are a critical population that should be enlightened and empowered to drive the desired action. This study aimed to investigate the determinants of climate...
Utilising the hierarchical hazard control model to reveal respiratory challenges faced by quarry and allied workers in Erongo, Otjozondjupa and Kunene regions, Namibia: A cross-sectional, quantitative study
November 2024
The study examines respiratory protection practices among quarry and allied workers in Namibia, amidst rising concerns over occupational respiratory disorders due to prolonged exposure to respirable dust. Utilising a quantitative cross-sectional design, data were collected from 304 workers across Erongo, Otjozondjupa, and Kunene regions. Findings showed a statistically significant association between employee...
The effect of aircraft engine model and fuel type on the morphological characteristics of soot particles
October 2024
In this study, the morphological characteristics of the soot samples collected from a Lycoming O-320 piston engine, PT6A-42 turboprop engine, and Rolls Royce Allison 250C20B turboshaft engine were examined using Raman spectroscopy. The results obtained in this study indicate that engine and fuel type have to a certain extent some influence on the morphological characteristics of the soot particles. The examination of...
Assessment of healthcare waste Pyrotec model 8 incinerator efficiency as a performance indicator at Muhimbili National Referral Hospital in Dar es Salaam, Tanzania
September 2024
The performance of a healthcare waste Pyrotec Model 8 incinerator at Muhimbili national referral hospital in Dar es Salaam, Tanzania, was investigated using two different types of healthcare wastes namely sharps waste and other waste (mass/weight) and as fractions. The other independent factor used in the investigation was diesel oil consumption. The incinerator performance was evaluated by determining how these factors...
Assessing the implication of prolong agrochemical applications on soils in some vegetable farms around the Southwest region of Cameroon
September 2024
Vegetable cultivation at urban peripherals is gaining ground due to the quest to feed an ever-increasing urban populace. However, the extensive use of agrochemicals in such gardens often leads to heavy metal contamination, with consequences for soil quality and human health. In order to safeguard human health and protect the environment, this study evaluated the contamination levels of per-urban vegetable garden soils...
Environmental impacts assessment of shipping activities on water quality of Apapa Bay, Lagos, Nigeria
August 2024
Activities at seaports can contribute to ecological hazards, particularly water pollution. This study investigated the environmental impacts of shipping activities at Apapa Bay, Lagos, Nigeria, focusing on the physicochemical characteristics and potentially toxic metals (PTMs) in the water. Water and sediment samples were collected from four different terminals in Apapa Bay and from Takwa Bay, which served as a control...
Analytical assessment of knowledge, attitude and practices (KAP) of waste management practices to optimize energy and food nexus: A case study of Oleh, Isoko South LGA, Delta State, Nigeria
August 2024
The circular life cycle of waste management, designed for waste-to-energy, can substantially contribute to efficient waste management, a precursor for sustainable energy and food production. This study evaluates knowledge, attitudes, and practices (KAP) related to waste management and identify its potential for improving energy and food production. Surveys, interviews, and data analysis were employed to investigate...
Speciation of phosphorus and nitrogen in sediments of Ogun River in Abeokuta, Southwestern Nigeria
July 2024
Sediments in rivers can contribute to the concentration of phosphorus and nitrogen in overlying water which affect aquatic life adversely at excessive concentrations. This study examined the various forms of phosphorus and nitrogen in sediments of Ogun River, the major river in the city of Abeokuta.Total phosphorus and total nitrogen concentrations ranged from 820-2740 and 840-1960 μg N g-1 respectively. Inorganic...
Philosophical analysis of climate change and sustainable agriculture
July 2024
The article explores the philosophical foundations of climate change and sustainable agriculture, highlighting the importance of ethical and philosophical reflection in seeking sustainable solutions. It analyzes philosophical conceptions of the human-nature relationship, discusses the Anthropocene as a conceptual framework, and examines ethical principles of responsibility and environmental justice. The article also...
Valorization of mining waste through fertilizer formulation: substitution of phosphoric acid by slimes and characterization of the obtained fertilizers
June 2024
This study aims to valorize the slimes (<40 µm and rich in P2O5) generated during the processing of phosphate ore from Taiba by formulating complex compound fertilizers using these wastes as a source of P2O5 through the progressive substitution of phosphoric acid. Following a complete characterization of the raw material using atomic absorption spectrophotometry and X-ray fluorescence, NPK complex fertilizers...
Relationship between trace element concentration and condition index in bivalves from lagoons in Ghana
June 2024
The study investigated the seasonal relationship between the Condition Index (CI) and concentrations of six trace metals in the tissues of three bivalves: Crassostrea tulipa (n = 275), Anadara (Senilia) senilis (n = 310) from two 'open' lagoons (Benya and Ningo), a 'closed' lagoon (Sakumo), and Perna perna (n = 155) from rocky shores adjacent to Benya and Sakumo. These bivalves were analyzed for their...
Micro and nanobubbles aided membrane processes
May 2024
The efficacy of micro and nanobubbles (MNBs) in membrane processes, particularly in the realms of cleaning and foul control, has been previously established. However, a comprehensive review of the distinctive attributes and mechanisms that render MNBs effective in these tasks remains unclear, hindering their optimization for enhanced performance and widespread application across membrane types. This critical review...
Sources of organ mineral and mineral fertilization on production components of soybean crop
May 2024
Climbing large productions/productivity is the result of assertive management, primarily associated with plant nutrition through soil fertilization. Another bottleneck in agricultural production, not yet fully elucidated in the literature, is the most appropriate method of fertilizer application, aiming to reduce environmental degradation, lower production costs, enhance nutrient absorption in the soil, and achieve high...
Characterization of the anaerobic digestion of cashew apple pulp from of the casamance
April 2024
Anaerobic digestion is considered a good method for processing organic waste. The end result is an almost complete conversion of biodegradable organic matter into finished products like methane, carbon dioxide, hydrogen sulphide, etc. The relative proportions of these gases depend on the nature of the fermented substrates and the fermentation conditions. Moreover, these substrates exist in Senegal with potential not yet...
A review of strategies for resilience of health impacts of climate variability in Guinea
April 2024
Climate change presents major health threats in Guinea, a low-income nation in West Africa. Rising temperatures, variable rainfall, floods, droughts and coastal erosion increase climate-sensitive health outcomes, including respiratory infections, diarrheal diseases, malaria, undernutrition and heat-related illness. From 1990 to 2004, there was a notable increase in deaths, starting from approximately 17,815 in 1990 and...
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