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http://repository.futminna.edu.ng:8080/jspui/handle/123456789/107
2023-12-20T03:12:56ZENGINEERING DESIGN, OPERATION AND MAINTENANCE PRACTICES FOR A FACULTATIVE WASTE STABILISATION POND: AN OVERVIEW
http://repository.futminna.edu.ng:8080/jspui/handle/123456789/19292
Title: ENGINEERING DESIGN, OPERATION AND MAINTENANCE PRACTICES FOR A FACULTATIVE WASTE STABILISATION POND: AN OVERVIEW
Authors: Ezekiel, Lydia Pam; Adeoye, Peter Aderemi; Otache, Yusuf Martins
Abstract: The activities of man over time have imparted greatly on the environment. These
activities give rise to a wide range of wastes; in this context, both the quantity and quality
of water are crucial elements. To this end the reuse of wastewater is adjudged as a
veritable strategy in combating the problem. This is largely through the adoption of waste
stabilisation ponds (WSPs). WSP concept basically entails the treatment of raw sewage
entirely by natural process which involves both algae and bacteria primarily in large
shallow basins (ponds). To do this, different designs and methods have been adopted over
time, though not without appurtenant advantages and demerits or shortcomings. Against
this backdrop, this paper attempts to review WSPs in general, that is in terms of design,
types and performance evaluation framework for objectivity, emphasis shall be on
facultative ponds (FPs).2023-05-11T00:00:00ZDEvelopment and Performance Evaluation of A Facultative Stabilisation Pond for Fishpond Wastewater Treatment
http://repository.futminna.edu.ng:8080/jspui/handle/123456789/19291
Title: DEvelopment and Performance Evaluation of A Facultative Stabilisation Pond for Fishpond Wastewater Treatment
Authors: Ezekiel, Pam Lydia; Adeoye, Peter Aderemi; Otache, Yusuf Martins; Mohammed, Ibrahim
Abstract: wastewater is characterized by high concentration of nutrients and solid minerals which are usually discharged into environment.2023-06-06T00:00:00ZTREATMENT OF FISHPOND WASTEWATER USING HYBRID CONSTRUCTED WETLANDS IN MINNA, NORTH CENTRAL NIGERIA.
http://repository.futminna.edu.ng:8080/jspui/handle/123456789/19290
Title: TREATMENT OF FISHPOND WASTEWATER USING HYBRID CONSTRUCTED WETLANDS IN MINNA, NORTH CENTRAL NIGERIA.
Authors: ADEOYE, PETER ADEREMI; Paramdi, Abari Solomon
Abstract: Musgola fish farm is an integrated farm located in Bosso Local Government of Niger State, North Central Nigeria. The farm uses large volume of freshwater for the purpose of fish husbandry. Wastewater generated from the fishpond leads to environmental pollution as it contains uningested food, fish dregs, faeces of different classes and chemical constituents. There is therefore the need for a study on environmental impact of these wastewaters and how it can be treated for safe disposal. This study was carried out to characterise the wastewater and thereafter evaluate the effectiveness of constructed wetlands (CWs) to treat it before discharging it into adjacent river. The results of fish pond effluent characterisation showed that the pH of the effluent ranges between 5.7 and 6.84, temperature was between 26 and 27 0C, electric conductivity ranges between 250 and 334 µs/cm, TDS ranges between 232 and 265 mg/L, BOD5 was between 102 and 123 mg/L, NH3 ranges between 1.23 and 1.92 mg/L, and Turbidity was between 9.9 and 11.2 NTU). These data were predetermined to use as baseline information for the wastewater entering the constructed wetlands. The developed hybrid CWs of two planted horizontal and vertical CWs with a corresponding two unplanted horizontal and verticals to act as control. The flow was continuous with calculated hydraulic flow rate of 20 L/day, hydraulic loading rate 15 L/day while hydraulic retention time for horizontal and vertical flow CWs were 5 and 4 days respectively. One way analysis of variance (ANOVA) at 95% significance level was used to examine the performance of the treatment. The treatment efficiency of the systems was calculated as the percentage of contaminant removal as measured from planted horizontal and vertical CWs compared with unplanted horizontal and vertical CWs. The comparison of hybrid CWs displayed removal efficiencies of 90.1 and 89.0 % for BOD5, 44.9 and 58.2% for TDS, 60.7 and 77.7% for TSS, 48.9 and 57.4% for EC, 35.2 and 45.5% for Turbidity. Sacciolepis africana-planted hybrid CWs proved to be more efficient than unplanted wetlands in the treatment of fishpond wastewater. Planted hybrid CWs had final effluent concentrations that comply very well to the discharge limits of WHO and Nigerian FEPA standards. Hence, constructed wetlands is a viable alternative to address many of the water-management problems faced by the fish industry.2023-05-10T00:00:00ZDRYING KINETICS, ENERGY REQUIREMENT, BIOACTIVE COMPOSITION AND MATHEMATICAL MODELING OF ALLIUM CEPA SLICES
http://repository.futminna.edu.ng:8080/jspui/handle/123456789/19221
Title: DRYING KINETICS, ENERGY REQUIREMENT, BIOACTIVE COMPOSITION AND MATHEMATICAL MODELING OF ALLIUM CEPA SLICES
Authors: Asoiro, U. Felix; Simeon, Meshack Imologie; Azuka, E. Chinenye; Solomon, Harami
Abstract: The drying kinetics, specific energy consumed (SEC), effective moisture diffusivity (EMD), flavonoid, phenolic
and vitamin C contents of onion slices dried under convective oven drying (COD) were compared with microwave drying (MD). Drying was performed with onion slice thicknesses of 2, 4, 6 and 8 mm; air drying temperatures of 60, 80, and 100°C for COD and microwave power of 450 W for MD. A decrease in slice thickness and increase in drying air temperature led to a drop in the drying time. As thickness increased from 2 – 8 mm, EMD rose from 1.1– 4.35 ´10-8 at 60oC, 1.1 – 5.6 8 10´ - at 80oC and 1.25 – 6.12 8 10´ - at 100°C with MD treatments yielding the highest mean value (6.65X 10^-8 m2 s-1) at 8 mm. Maximum SEC for onion slices in COD was 238.27 kWh/kg H2O (2 mm thickness) and the minimum was 39.4 kWh/kg H2O (8 mm thickness) whereas maximum during MD was 25.33 kWh/kg H2O (8 mm thickness) and minimum, 18.7 kWh/kg H2O (2 mm thickness). MD treatment gave a significant (p£0.05) increase in the flavonoid (39.42 – 64.4%), phenolic (38.0 – 46.84%) and vitamin C (3.7 – 4.23 mg 100 g-1) contents while COD treatment at 60°C and 100°C had positive effects on only vit. C and phenolic contents respectively. In comparison, the Weibull model gave the overall best fit (highest R2=0.999; lowest SSE=0.0002, RSME=0.0123 and χ2= 0.0004) when drying 2 mm onion slices at 100°C.2022-09-24T00:00:00Z