Kola Ogedengbe

• Professor at University of Ibadan

Fluoride contamination of groundwater is endemic in several countries of the world. Ingestion of fluoride laden water is linked with varying human health consequences. However, deployment of efficient and optimally performing groundwater defluoridation systems in affected regions still requires concerted research efforts. Thus in this study, Respon...

Analysis of trend in hydro-meteorological variables is extremely important for improving water resources planning and management. This study examines trend in monthly rainfall and temperature using the recently developed Innovative Trend Analysis Method (ITAM) and Mann-Kendall (M-K) with Sen's slope test. Record of precipitation and temperature dat...

Fluoride enrichment of groundwater has been adjudged to be a global environmental challenge in the past decade as most humans depend on groundwater for their domestic needs. This study was conducted to investigate the ionic and fluoride concentrations in borehole water and its associated health risk potentials to residents of Makurdi town and its e...

This study investigated the optimal synthesis condition for Raffia Palm Shell Activated Carbon (RPSAC) using phosphoric acid as activation agent. The optimization of the synthesis conditions was achieved using the Central Composite Design (CDD) in Response Surface Methodology (RSM). The influences of impregnation ratio, temperature, time and concen...

Analysis of trends in monthly evaporation and solar radiation in the face of climate change gives useful information for better planning and management of water resources. This paper examines the monthly evaporation and solar radiation trend using the recently developed innovative trend analysis method (ITAM). The monthly evaporation trend result s...

In this study a novel activated carbon derived from Raffia palm shells was synthesized firstly by activating the precursor with phosphoric acid to produce Raffia Palm Shell Activated Carbon (RPSAC) and further functionalized by coating its surface with aluminium hydroxide to produce a composite called Aluminium Oxide-coated Raffia Palm Shell Activa...

Food processing industries can cause some serious problems for the environment through the discharge of wastewater. There is little information on the effectiveness of Moringa Oleifera (MO)seeds on the treatment of dairy wastewater, this study therefore evaluated the effectiveness of MO seeds and blends of both alum and MO in the coagulation of dia...

This study was conducted to investigate the ionic and fluoride concentrations in borehole water and its associated health risk potentials to residents of Makurdi town and its environs, Benue state, Nigeria. An aggregate of sixty-three (63) groundwater samples were retrieved from boreholes in twenty-one (21) diverse points within the study area and...

The overexploitation of agricultural lands have necessitated the use of fertilizers to enhance food production. However, due to the cost and environmental impacts of mineral fertilizers, the utilization of readily available organic wastes as soil amendments have become necessary. The effect of the sole or combined application of yam, cassava and pl...

Soil quality in an agroecosytem is considerably influenced by land use and management practices. Twenty two potential soil quality indicators were used to assess the effects of five different land use types (arable land, plantation, agroforestry, marginal land and native forest) on soil quality in Akufo and Atan farm settlements in Ibadan, southwes...

A field study was conducted to determine the effects of combine treatment of greywater application rates and mulches types on growth and yield of Capsicum chinense in Omu-Aran, Nigeria. Greywater (GW) was treated using a pilot-scale horizontal sub-surface flow constructed wetlands (HSSF CW) vegetated with Canna indica plants. Four irrigation levels...

Developing countries are currently facing intense drinking water shortages due to paucity of funds to set-up potable water treatment plants. This has led to the outbreak of water-borne diseases resulting in huge medical spending for the government. Employing natural biopolymers (Cottonseed (Gossypium hirsutum) [CS] extracts and de-oiled Jute seed (...

A pilot-scale batch-flow free water surface (FWS) constructed wetland (CW) system planted with Rhynchospora corymbosa (L.) Britton was developed with a hydraulic retention time (HRT) of 2.5 days. The average porosity of the substrate was 0.55 and calculated hydraulic loading rate (HLR) was 3.96 (g BOD/m2-day). Quantitative and qualitative character...

Large deposits of natural bitumen are found in some areas of Ondo State, Nigeria. Although the mineral is still unexploited, its seepage is enough to negatively influence the environment, especially water resources. This work was designed to determine the potential of four Bitumen Utilizing Microbes (BUM) for the purification of Bitumen-Polluted Wa...

This study is aimed at investigating indigenous cassava processing systems and waste management practices in five selected Local Government Areas (Akinyele, Ido, Ona-Ara, Ibadan North and Egbeda) within Ibadan, Oyo State, Nigeria. The selection was based on dominance and spatial distribution of cassava processing clusters. Data on social parameters...

Developing countries are currently facing intense drinking water shortages due to paucity of funds to set-up potable water treatment facilities. This has led to the outbreak of water-borne diseases resulting in huge medical spending for the government. This study was aimed at comparing the effectiveness of Cottonseeds (Gossypium hirsutum) [CS] and...

This paper discusses wastewater and proven techniques for wastewater remediation and reuses from the sub-Saharan Africa (SSA) perspective. Water scarcity and polluted water sources contribute to the death of a large population of people daily; most of whom are living in SSA. The vast availability of non-recycled wastewater and poor waste management...

Accurate irrigation planning requires basic information about the soil, environment and the water requirements of the crop to be cultivated. With new variety of a crop comes the physiological characteristics that may be somewhat different from known varieties. Crop Water Requirement (CWR) and Crop Coefficient (Kc) are major factors required in irri...

Local cassava agro-processing industries in Nigeria generate toxic organic effluent with negative environmental impact if disposed without adequate treatment. This study examines the performance of a lab-scale aerated sequencing batch reactor (SBR) in degrading cassava mill effluent using palm kernel (Elaeis guineensis) shell (PKS) as biofilter med...

Citation: Sasanya BS (2018) Effects of Piggery and Poultry Bioslurry on the Safe Consumption of Amaranthus hybridus and Corchorus olitorius. J Food Process Technol 10: 771. Abstract Several health and environmental hazards had been associated with the use of synthetic fertilizers. It is, therefore, appropriate to look into possible alternatives whi...

Treatment performance of horizontal flow (HF) and vertical flow (VF) constructed wetland planted with Rhynchospora corymbosa were compared. The average porosity of the CW beds were 0.55, hydraulic retention time (HRT) of 3 days, hydraulic loading rate (HLR) and Organic Loading rate were 0.058 m/day and 3.96 (gÁBOD/m 2 Áday), respectively with a vol...

Contaminated water, sourced from wells and streams has for long remained the major available water for domestic, industrial and some others uses in the bitumen-rich areas of Ondo State, Nigeria. In this work, the effects of bitumen contamination on some of the quality of water from the wells and streams in the area are determined from the water sam...

The hazard posed by poorly treated effluent from agro-food treatment plant has been a growing concern to environmentalists and regulatory bodies. This study is aimed at benchmarking fresh water utilization and assessing the treatment efficiency of an agro-food wastewater treatment plant in Lagos, Nigeria based on biophysicochemical characterization...

In the present study, activated carbons were produced from low-cost agricultural residues and characterized. These were; coconut shells carbon (CSC), palm kernel shells carbon (PKC) and a mixture of coconut and palm kernel shells carbon (CCPC). Batch equilibrium experiments were carried out in the laboratory using the adsorbents for the treatment o...

The adsorption performance of a packed bed column using zinc chloride modified Raffia Palm Seed Activated Carbon (RPSAC) for the removal of cadmium ion from aqueous solution was investigated. The adsorption kinetics was analyzed using Thomas (KTH), Adam-Bohart (KAB) and Yoon-Nelson (KYN) models. The values of KTH and KAB increased with increasing f...

This research was conducted to determine growth stage-specific crop coefficient (Kc) and Consumptive Use (CU), for Capsicum chinense (Ata rodo) grown under irrigation in Omu-Aran, North central Nigeria. Daily CU and growth stagespecific crop coefficient Kc for Capsicum chinense was measured using a developed and calibrated hydraulic weighing lysime...

The comparative assessment of industrial and agricultural effluents on surface water qualities of Ona Stream at Oluyole industrial Estate was carried out. This was to identify major pollutants, their effects on water qualities and to ascertain the potential of using the polluted surface water for irrigation purposes. Water samples were collected at...

Sustainable management of water resources involves inventory, conservation, efficient utilization, and quality management. Although, activities relating to quantity assessment and management in terms of river discharge and water resources planning are given attention at the basin level, water quality assessment are still being done at specific loca...

The use of bamboo ( Bambusa vulgaris, Schrad ) in gravity – flow drip irrigation was evaluated at the Teaching and Research Farm, University of Ado Ekiti, Nigeria with leaf amaranth ( Amaranthus cruentus ) as test crop. System involved the use of bamboo as the conveyance structure and medical infusion sets as dripper to deliver water to the field a...

Environmental pollution caused by the activities of Ewekoro Cement production facility of the West African Portland Cement (WAPC, Plc), Ogun State, Nigeria was studied at some terrestrial and aquatic receptor locations within the catchments area of the production plant which hasbeen in operation for over 40years. Air, water and soil samples of the...

The study was carried out to assess the well waters, their sanitary features, prevailing pollutions and water qualities in some communities in the South-east Local Government Area of Ibadan metropolis, Nigeria. A random selection of houses in the area with forty shallow hand dug wells grouped into eight zones was considered. Structured questionnair...

The study was carried out to assess the efficacy of solar radiation as a disinfection method for well waters in some communities in the south east local government area of Ibadan metropolis, Nigeria. Well water sampling and quality tests were done during the dry season and parameters such as total solids, suspended solids, total hardness and coli f...

The study investigates the reasons for failure of earth dams in Nigeria with emphasis on dams owned by the River Basin Development Authorities of the Federal Ministry of Agriculture and Water resources using Cham dam in Gombe State as case study. The general causes of earth dam failure were considered with emphasis on failures due to engineering fa...

Modern micro irrigation materials are very effective when correctly installed and maintained but their main disadvantage in the Nigerian farming situation is their relatively high cost. This study developed bamboo (Oxytenanthera abyssinica) as irrigation pipe and determined some of its hydraulic properties namely; burst strength, head loss and fric...

Six sites containing various plants with different indicator parts were analyzed for the environmental effects of bitumen on the plants and animals. From the location, which is in Lodasa, Ode-Irele Local Government Area of Ondo State, twelve soil samples, six plant and water samples were collected to study the effects of bitumen on them. Results sh...

Development of nutrient sustainable crops friendly agricultural soils of dredged materials from any Lagoon will enhance the economic status and poverty alleviation of resource poor residents of the area. This study investigates the agricultural potentials of the soils dredged from the Lagos Lagoon, Nigeria. The Nigerian West Minister Dredging carri...

Water crisis is assuming a more explosive and dangerous phenomenon due to stiff competition and demand between domestic use and agricultural activities. Farmer friendly and affordable indigenous water harvesting structure was developed and evaluated for the Farming systems research citrus expansion orchard at the National Horticultural Research Ins...

Twenty poultries in Ibadan city, Nigeria were studied in respect of water use, farm operations and waste disposal. The common disposal method among the poultry farmers was open dumping of wastes. Five poultry farms were selected, one in each zone for sampling to assess both soil and water quality parameters. Water samples were collected from main w...

Strength properties of Bambusa vulgaris with increasing culm height was studied considering its fiber characteristics with particular reference to the presence or absence of nodes. At the internode, an increase in fiber length culm height (2.78 mso-3.73 mum from base to top) was observed, while fiber diameter behaved conversely, showing a reduction...

The importance of Akaike Information Criterion {AIC} in stochastic stream flow modeling is presented. All possible tentative models were identified using the iterative, powerful but rather complicated modeling procedure called Box-Jenkins methodology. The Autocorrelation Function (ACF) and Partial Autocorrelation function (PACF) were demonstrated t...

Effective management of existing water reservoirs has been identified as profitable strategy to solving the challenge of providing adequate water for domestic and irrigation uses. The Opeki River Dam is a medium size dam with a maximum active storage capacity of 2.1million cubic metre (mcm) and a guaranteed maximum all year round active storage of...

Rainfall data spanning about a period o 36 years, were used to compute rainfall erosivity indices for some selected stations in Nigeria. About 38 locations were selected, cutting across all the five agro-ecological zones of Nigeria. The Fournier index, which is defined as quotient of the squared sum of rainfall of wettest month of the year to the a...

The characteristics of flow over side weirs are taken into consideration to verify the discharge coefficient for subcritical flow conditions under the assumption of constant-specific energy. The main channel discharge, length of weir crest and sill height of the weir are treated as controlled variables. The discharge coefficient Cd is found to depe...

Field studies were undertaken at the Oyo North Agricultural Development Project (ONADEP), Shaki, Nigeria in 1988 and 1989 to evaluate the reliability and quality of subsurface water sources in relation to irrigation and livestock usage. Based on data from 22 water samples, 15 soil types, seasonal consumption of water for 10 major crops and extensiv...

The comparative assessment of industrial and agricultural effluents on surface water qualities of Ona Stream at Oluyole industrial Estate was carried out. This was to identify major pollutants, their effects on water qualities and to ascertain the potential of using the polluted surface water for irrigation purposes. Some parameters which gave evid...