Papers by Emmanuel Tetteh
IntroductionMalaria and sickle cell disease (SCD) co-morbidity have previously been reported in G... more IntroductionMalaria and sickle cell disease (SCD) co-morbidity have previously been reported in Ghana. However, there is paucity of data on haematological profiles and oxidative stress in comorbidity states. This study identified novel inflammatory biomarkers associated with malaria in SCD and analyzed the levels of 8-iso-prostaglandin F2α oxidative stress biomarker in malaria-SCD co-morbidity in Ghanaian patients.MethodsBlood (5ml) was collected from malaria patients into K3-EDTA tube. Malaria parasites speciation and quantification were then done according WHO guidelines. All eligible samples were assayed for haematological profile, sickle cell phenotyping, infectious markers (hepatitis B, hepatitis C, syphilis and HIV 1&2) and plasma levels of 8-epi-prostaglandin F2α..ResultsPrevalence of malaria in SCD (malaria-SCD) was 13.4% (45/335). Male: female ratio was 0.8:1 (X2=1.43, p=0.231). Mean ages for malaria in normal haemoglobin type (malaria-HbAA) and malaria-SCD were 12.79±4.91 ...
IGI Global eBooks, 2022
The equilibration that underscores the internet of things (IoT) and big data analytics (BDA) cann... more The equilibration that underscores the internet of things (IoT) and big data analytics (BDA) cannot be underestimated at the behest of real-life social challenges and significant policy data generated to redress the concerns of epistemic communities, such as political policy actors, stakeholders, and the citizenry. The cognitive balancing of new information gathered by BDA and assimilated across the IoT is at the crossroads of ascertaining how the growing increases of such BDA can be better managed to transition from the big data state of disequilibration to reach a more stable equilibrium of policy data usefulness. In the quest for explicating the equilibration of policy data usefulness, an account of the curriculum-based MPA policy analysis and analytics concentration program at Norwich University is described as a case example of big data policy-analytic epistemology. The case study offers a symbolic ideology of an IoT action-learning solution model as a recommendation for fostering the stable equilibration of policy data usefulness.
International Journal of Advanced Corporate Learning (iJAC)
Information Communication Technology (ICT) is advancing with rapid development aimed at offering ... more Information Communication Technology (ICT) is advancing with rapid development aimed at offering quality education among learners to ensure satisfaction as well as convenience. With the devastating effects of Coronavirus, many institutions are relying on e-learning technologies to carry out both administrative and academic activities to promote social distancing as well as curb the spread of the novel coronavirus. E-learning allows students from different geographical locations to learn as if in the classroom through the internet; providing tools that enhance effective teaching and learning. The question we ask is: are e-learning platforms performing as expected? To find out the answer to this question, an analysis of the factors identified to have affected implementation utilizing the IS implementation framework within two HEIs in Ghana is outlined in other to enable the identification of similarities and differences to be done.
Informatica, 2021
Information Technologies have come to be accepted as the new normal in many parts of the world. E... more Information Technologies have come to be accepted as the new normal in many parts of the world. Events like the outbreak of the COVID-19 have highlighted the significance of these artifacts in facilitating the continuance of or daily activities without grinding to a halt. While some educational institutions, from kindergarten all through to higher education, were actively engaged in teaching and learning, others were grappling with implementation issues. This paper takes a look at Computer-Mediated Communication (CMC) Portal implementation in HEIs within a developing country. Two Ghanaian HEIs' implementation of CMC portals is examined using Tetteh et al's CMC portal implementation framework as well as a structuration theory adapted by Orlikowski & Robey from Giddens's work. Findings reveal an indistinct and almost absent consideration of the broader institutional goals for implementing CMC portals. It was also found that the activities involved in the adoption, implementation, and institutionalization of technology into institutional processes, are often not adequately considered, were unaligned with institutional visions, and not well understood. Strategies that can improve the utilization of CMC portal initiatives and guide implementation efforts of HEIs in Ghana are then advanced. Additionally, the study broadens our understanding of the structuration perspective on the outcomes of technology implementation in institutions providing another lens for identifying the underlying causational factors. Povzetek: Prispevek opisuje analizo dveh implementacij CMC (Computer-Mediated Communication) portala v Gani.
International Journal of Emerging Technologies in Learning (iJET), 2020
computer-mediated communication (CMC) portal services provision through in-formation technologies... more computer-mediated communication (CMC) portal services provision through in-formation technologies (IT) in higher educational institutions (HEIs) should not be an impossible task considering the growth in information systems (IS) and an upsurge of internet users. There have been numerous efforts aimed at implement-ing CMC portals by HEIs but just a few could be said to be successful. The aim of this research is to develop a framework that can help to provide a better understanding of how to manage the entire implementation process so as to bring the expected advantages to institutions implementing it. Results of past research had been studied to develop the conceptual framework utilizing significant theories in the field of information system implementation and institutional change. The framework addresses the adoption, implementation as well as institutionalization stages of CMC portal implementation, and a number of institutional contextual factors influencing implementation effort...
International Journal of Emerging Technologies in Learning (iJET), 2019
The provision of computer-mediated communication (CMC) portal services through information techno... more The provision of computer-mediated communication (CMC) portal services through information technologies (IT) in higher educational institutions (HEIs) in developing countries should not be an impossible task considering the growth in information systems (IS) and an upsurge of internet users. There have been numerous efforts aimed at implementing CMC portals by HEIs but just a few could be said to be successful. To guide the implementation efforts of HEIs in developing countries especially Ghana, qualitative research is carried out on Koforidua technical university in Ghana which has implemented a CMC portal and a proposed CMC portal implementation framework, as well as a structuration perspective discussion, is presented. Findings of the research include the initiation, promotion, and adoption of technology into institutional processes, the physical deployment of the system and the post-implementation activities which can improve the adoption, implementation, and institutionalizatio...
International journal of scientific and research publications, 2017
There is an increasing global demand for energy crops and animal manures for an eco-friendly and ... more There is an increasing global demand for energy crops and animal manures for an eco-friendly and renewable energy to supplement fossil fuel, aid in heat and electricity production. In order to meet this demand, this study aimed at optimizing the anaerobic digestion of Miscanthus Fuscus for biogas production at mesophilic temperatures in a biochemical methane potential (BMP) test. Methane production was measured for 20 days in a 500mL schott bottles in a batch mode and controlled at 37 ± 1°C. Miscanthus Fuscus was characterized in the batch reactor to enable the inoculum activity and the biogas volume reported during the 20 days. The cumulative volume of biogas (L/day) for the five biodigesters labelled as sample IDs 1-5 is reported as 0.67, 1.16, 1.01, 0.57, and 1.17 L/day respectively. Highest methane yield was reported on the 16th day of the BMP test at 27% v/v of biogas produced.
Materials, 2021
Global accessibility to clean water has stressed the need to develop advanced technologies for th... more Global accessibility to clean water has stressed the need to develop advanced technologies for the removal of toxic organic and inorganic pollutants and pathogens from wastewater to meet stringent discharge water quality limits. Conventionally, the high separation efficiencies, relative low costs, small footprint, and ease of operation associated with integrated photocatalytic-membrane (IPM) technologies are gaining an all-inclusive attention. Conversely, photocatalysis and membrane technologies face some degree of setbacks, which limit their worldwide application in wastewater settings for the treatment of emerging contaminants. Therefore, this review elucidated titanium dioxide (TiO2), based on its unique properties (low cost, non-toxicity, biocompatibility, and high chemical stability), to have great potential in engineering photocatalytic-based membranes for reclamation of wastewater for re-use. The environmental pathway of TiO2 nanoparticles, membranes and configuration types, ...
Membranes, 2021
Membrane-based water purification technologies contribute significantly to water settings, where ... more Membrane-based water purification technologies contribute significantly to water settings, where it is imperative to use low-cost energy sources to make the process economically and technically competitive for large-scale applications. Donnan membrane processes (DMPs) are driven by a potential gradient across an ion exchange membrane and have an advantage over fouling in conventional pressure driven membrane technologies, which are gaining attention. DMP is a removal, recovery and recycling technology that is commonly used for separation, purification and the concentrating of metals in different water and waste streams. In this study, the principle and application of DMP for sustainable wastewater treatment and prospects of chemical remediation are reviewed and discussed. In addition, the separation of dissolved metal ions in wastewater settings without the use of pressure driven gradients or external energy supply membrane technologies is highlighted. Furthermore, DMP distinctive c...
Scientific Reports, 2020
The photocatalytic degradation of a local South Africa oil refinery wastewater was conducted unde... more The photocatalytic degradation of a local South Africa oil refinery wastewater was conducted under UV radiation using an aqueous catalyst of titanium dioxide (TiO2), Degussa P25 (80% anatase, 20% rutile) in suspension. The experiment was carried out in a batch aerated photocatalytic reactor based on a central composite design (CCD) and analyzed using response surface methodology (RSM). The effects of three operational variables viz. TiO2 dosage (2–8 g/L), runtime (30–90 minutes), and airflow rate (0.768–1.48 L/min) were examined for the removal of phenol and soap oil and grease (SOG). The data derived from the CCD, and the successive analysis of variance (ANOVA) showed the TiO2 dosage to be the most influential factor, while the other factors were also significant (P < 0.0001). Also, the ANOVA test revealed the second-order of TiO2 dosage and runtime as the main interaction factors on the removal efficiency. To maximize the pollutant removal, the optimum conditions were found at ...
Materials Today: Proceedings, 2020
Rapid demand on textile industries and human activities produces high strength wastewater, impedi... more Rapid demand on textile industries and human activities produces high strength wastewater, impeding coagulation treatment systems both efficiently and economically. Therefore, a composite magnetic coagulant (CMC) containing ferromagnetic nanoparticle and alum was developed by mixing, drying and calcining for the remediation of textile effluent. The physicochemical and structural adsorption properties of the CMC and alum were examined with a Scanning Electron Microscope (SEM) and a Spectrum Two FT-IR Spectrometer. Jar test apparatus was employed to evaluate the coagulation performance for the removal of turbidity, color and some heavy metals (Al, Cu, Fe, Zn, and Mg). Three most effective operational parameters (coagulant dosage, initial pH and magnetic time exposure) were examined by response surface methodology (RSM). SEM results showed well-modified layers of the magnetic nanoparticles with large surface area and pore size. Magnetized residue exhibited great reusability potential with improved functional groups (FT-IR) compared to alum. Analysis of variance (ANOVA) tests proved that the quadratic models developed were significant with P-values less than 0.05 and regression coefficients close to 1 at a 95% confidence level. Coagulant dosage was the most influential factor. Under optimum conditions of dosage (45 mg/L), pH (4) and magnetic exposure time (50 min), the software denoting 85% and 82% removal of turbidity and color respectively predicted the desirability of 85%. In both organics and heavy metals removal; CMC demonstrated a better performance of 80-95% than alum (40-75%). Therefore, the application of superparamagnetic nanocomposite (CMC) in the water and wastewater settings is foreseen as an eco-friendly and effective coagulant for the remediation of heavy metals and their derivative pollutants.
Environmental Engineering Research, 2019
This study investigated aluminum permeation using a counter flow ion exchange dialysis (IED) syst... more This study investigated aluminum permeation using a counter flow ion exchange dialysis (IED) system. The optimum conditions for permeation were investigated using response surface methodology (RSM). Effect of four factors- feed concentration (100-2,000 ppm, A), feed flow rate (25-85%, B), sweep concentration (0.25-1 N HCl, C) and sweep flow rate (25-85%, D) were studied using face centered central composite (FC-CCD) statistical experimental design. A RSM model was developed based on the experimental permeation data and the response plot was developed. The FC-CCD model predicted permeation correlated with the experimental data. The regression coefficient (R2) was found to be 0.9568. The experiment showed the ascending order of the effect of the variables is D < B < C < A. In a counter flow IED for Al permeation, the sweep flow rate is insignificant (p > 0.05). Experimental validation demonstrated for target permeation of 70% was 68.8% ± 2.22%. This suggested that the RSM ...
An ion exchange dialysis (IED) is used in the recovery of aluminium from residue. In this papers,... more An ion exchange dialysis (IED) is used in the recovery of aluminium from residue. In this papers, the face-centered central composite design (FC-CCD) of the response surface methodology (RSM) and desirability approach is used for experimental design, modelling and process optimization of a counter flow IED system. The feed concentration, feed flowrate, sweep flowrate and sweep concentration are selected as the process variables, with the Al-transport across a Nafion 117 membrane as the target response. A total of 30 experimental runs were conducted with 6 center points. The response obtained was analysed by analysis of variance (ANOVA) and fitted to a second-order polynomial model using multiple regression analysis. The actual R2 and standard deviation of the model are 0.9548 and 0.2932 respectively. The influences of significant variables are plotted on 3D surface and contour plots. The designed variables were numerically optimized by applying the desirability function to achieve t...
Environmental Engineering Research, 2019
This study was aimed at using the Central Composite Design (CCD) and Box-Behnken Design (BBD) to ... more This study was aimed at using the Central Composite Design (CCD) and Box-Behnken Design (BBD) to compare the efficiency and to elucidate the main interacting parameters in the upflow anaerobic sludge blanket (UASB) reactor, namely: Organic Loading Rate (OLR), Hydraulic Retention Times (HRT) and pH at a constant temperature of 35°C. Optimum HRT (15 h), OLR (3.5 kg.m-3 .d-1) and pH (7) resulted in biogas production of 5,800 mL/d and COD removal of 80.8%. BBD produced a higher desirability efficiency of 94% as compared to the CCD which was 92%. The regression quadratic models developed with high R 2 values of 0.961 and 0.978 for both CCD and BBD, respectively, demonstrated that the interaction models could be used to pilot the design space. BBD model developed was more reliable with a higher prediction of biogas production (5,955.4 ± 225.3 mL/d) and COD removal (81.5 ± 1.014%), much close to the experimental results at a 95% confidence level. CCD model predictions was greater in terms of COD removal (82.6 ± 1.06% > 80.8%) and biogas production (4,636.31 mL/d ± 439.81 < 5,800 mL/d) which was less than the experimental results. Therefore, RSM can be adapted for optimizing various wastewater treatment processes.
Water Practice and Technology, 2017
The use of coagulants is essential in the diverse disciplines of conventional water and wastewate... more The use of coagulants is essential in the diverse disciplines of conventional water and wastewater treatment. This work aimed to select an economic and effective coagulant, to minimize the cost of treatment and the oil droplet content of the water, thus enhancing the efficiency of a local South African oil refinery effluent plant recovering water and oil for reuse by treating the industrial mineral oil wastewater. A standard dissolved air flotation jar test preceded evaluation of four coagulants, viz. aluminum sulfate (Alum), aluminum chloride, ferric sulfate and ferric chloride. Chemical oxygen demand, soap oil and grease, total suspended solids and turbidity were determined as water quality parameters to check coagulant efficiency. Removal of over 70% was achieved for each parameter. The results obtained at pH 5 and coagulant dose of 50 mg/L showed that alum was the best pretreatment coagulant for destabilizing and minimizing oil droplets in water, due to its trivalent cationic na...
CBU International Conference Proceedings, 2018
Most potable water treatment plants use aluminium salts as coagulants. This generates a lot of tr... more Most potable water treatment plants use aluminium salts as coagulants. This generates a lot of treatment residue which consist of a high amount of aluminium in the residue matrix. Recovery of the alum-coagulant from the potable water treatment for reuse provides direct process and economic advantages. Donnan Dialysis is an ion exchange process that has a proven advantage in coagulant recovery. The commercial application of this process requires bench scale optimization before implementation. In this study, a response surface methodology is applied to the Donnan system. Incorporated with the Box-Behnken experimental matrix, the main and interactional effects of input variables for optimum alum recovery was determined. The Nafion 117 cation exchange membrane was used. Using experimental results, the quadratic statistical module generated was significant with a low P-value (<0.001). The statistical prediction from experimental results shows that high recoveries of 85-96% can be ach...
Applied Sciences
Carbon dioxide (CO2) emissions from fossil fuels have led industries to seek cheaper carbon abate... more Carbon dioxide (CO2) emissions from fossil fuels have led industries to seek cheaper carbon abatement technologies to mitigate environmental pollution. Herein, the effect of a magnetic photocatalyst (Fe-TiO2) on biogas production in anaerobic digestion (AD) of wastewater was investigated with three bioreactors coupled with UV-light (18 W). Three experimental setups defined as the control (AD system with no Fe-TiO2), biophotoreactor (BP), and biophotomagnetic (BPM) systems were operated at a mesophilic temperature (35 ± 5 °C) for a hydraulic retention time (HRT) of 30 days. The control system (ADs) had no Fe-TiO2 additives. The BPMs with 2 g Fe-TiO2 were exposed to a magnetic field, whereas the BPs were not. The removal rate of the chemical oxygen demand (COD), volatile solids (VS), and total solids (TS), together with biogas production and composition were monitored for each reactor. The degree of degradation of 75% COD was observed for the BPMs at a pH of 6.5 followed by the BPs (6...
Bioengineering, 2022
The continuous combustion of fossil fuels and industrial wastewater pollution undermines global e... more The continuous combustion of fossil fuels and industrial wastewater pollution undermines global environmental and socio-economic sustainability. Addressing this necessitates a techno-scientific revolution to recover the renewable energy potential of wastewater towards a circular economy. Herein, a developed biophotocatalytic (BP) system was examined with an engineered Fe-TiO2 to ascertain its degradability efficiency and biogas production from industrial wastewater. The response surface methodology (RSM) based on a modified Box-Behnken designed experiment was used to optimize and maximize the BP system’s desirability. The parameters investigated included catalyst dosage of 2–6 g and hydraulic retention time (HRT) of 1–31 d at a constant temperature of 37.5 °C and organic loading rate of 2.38 kgCOD/Ld. The modified RSM-BBD predicted 100% desirability at an optimal catalyst load of 4 g and HRT of 21 d. This represented 267 mL/d of biogas and >98% COD, color, and turbidity removal. ...
Polymers, 2021
In this study, the principle of sustaining circular economy is presented as a way of recovering v... more In this study, the principle of sustaining circular economy is presented as a way of recovering valuable resources from wastewater and utilizing its energy potential via anaerobic digestion (AD) of municipality wastewater. Biostimulation of the AD process was investigated to improve its treatability efficiency, biogas production, and kinetic stability. Addressing this together with agricultural waste such as eggshells (CE), banana peel (PB), and calcined banana peels (BI) were employed and compared to magnetite (Fe3O4) as biostimulation additives via 1 L biochemical methane potential tests. With a working volume of 0.8 L (charge with inoculum to substrate ratio of 3:5 v/v) and 1.5 g of the additives, each bioreactor was operated at a mesophilic temperature of 40 °C for 30 days while being compared to a control bioreactor. Scanning electron microscopy and energy dispersive X-ray (SEM/EDX) analysis was used to reveal the absorbent’s morphology at high magnification of 10 kx and surfac...
International journal of scientific and research publications, 2017
Renewable energy could replace the conventional sources of energy such as fossil fuel and oil, se... more Renewable energy could replace the conventional sources of energy such as fossil fuel and oil, serving as an alternative source of energy. Non-renewable energy sources have been found to pose various environmental problems such as greenhouse gas emissions as they tend to deplete at faster rates. Biological processes such as fermentation and anaerobic digestion for the past decades have given rise to the production of biofuels such as biogas and bioethanol. Biogas production is environmentally friendly and simple to produce although some drawbacks have limited its full exploitation in the past decades such as the physical and chemical treatment techniques required in the process.
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Papers by Emmanuel Tetteh