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Papers by Godfred Teye
Environmental challenges, Apr 1, 2024
Nanoscale advances, 2020
Please note that technical editing may introduce minor changes to the text and/or graphics, which... more Please note that technical editing may introduce minor changes to the text and/or graphics, which may alter content. The journal's standard Terms & Conditions and the Ethical guidelines still apply. In no event shall the Royal Society of Chemistry be held responsible for any errors or omissions in this Accepted Manuscript or any consequences arising from the use of any information it contains.
Nanomaterials, Oct 4, 2021
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Climate change management, 2023
Waste having a significant and relevant material presence in our everyday life was not considered... more Waste having a significant and relevant material presence in our everyday life was not considered worthy of human attention up until the 1990s. Most probably, this delayed recognition of waste is due to the fact that it has been mistakenly understood as something that is supposed to remain invisible to the human eye in a sense that it is assumed to be occupying those spaces that are not inhabited by human beings. Contemporary times, however, are marked by giving due importance to waste. It is seen as a crucial environmental and health challenge for species’ survival on earth and is therefore placed center stage in the United Nations Sustainable Development Goals (SDGs) that aim to protect the planet. More recently, SDG 12, ensuring sustainable consumption and production patterns, has alerted to fast-growing waste management (WM) environmental issues. With the earth being viewed as a limited natural resource and having the inadequate capacity to accommodate wastes leading to adverse environmental and health consequences, caution must be taken to understand the associations between global consumption, total waste, and wasting patterns. Conceptualizing waste as a globally circulating material, particularly in terms of greenhouse gas emissions (GHG) such as carbon dioxide (CO2), methane (CH4), and sulphur oxide (SOx), the governance of waste has become a global concern. This chapter focuses on WM in Ghana, a middle-income economy country in the West of Africa. Due to rapid industrialization, Ghana is witnessing an ever-escalation of the country’s contribution to global environmental waste issues, especially GHG emissions. This study aims to identify and address the challenges associated with managing waste in Ghana. Additionally, it proposes specific measures to mitigate climate change and its effects on the environment and human health resulting from WM. A descriptive cross-sectional study was conducted with 101 responses received from WM experts based on the aim. The data were analysed using the statistical package for social sciences (SPSS) version 27. 72% of respondents were male, with most completing first and second degrees and have been working between 11 and 15 years. Although most of the respondents’ report waste being poorly managed, 93% consider that the associated causes of improper WM include inadequate infrastructure, lack of landfills, lack of tools and logistics, and equipment. All respondents believed that the challenges affect climate change through the emission of GHGs and particulate matter, resulting in global warming and impacting human health.
Urban Science
More and more, waste generated in most parts of the Western world has been recycled and transform... more More and more, waste generated in most parts of the Western world has been recycled and transformed into new circularity products. However, managing waste within Sub-Saharan Africa (SSA), such as in Ghana, has become a challenge due to the continued practice of the old traditional linear waste economy, that is, the taking, making and disposing methods of management, representing a threat to global environmental sustainability. Despite the need to revise current linear waste management (WM) in order to turn to the circular economy (CE) model, which consists of the concept of renew, remake and share, to advance sustainable development, a number of factors restrict the CE realization in practice, specifically in developing countries. An integrative methodology was used in this article to identify some of the challenges that hinder the achievement of CE in SSA countries. The results revealed the absence of educational programs and public awareness of waste management activities. The fin...
Reviews of Environmental Contamination and Toxicology Volume 254, 2020
The intensity of emerging pollutants such as pharmaceuticals and personal care products (PPCPs) i... more The intensity of emerging pollutants such as pharmaceuticals and personal care products (PPCPs) in the aquatic and terrestrial environment is a major source of concern to researchers. The current conventional methods of wastewater treatment plants are considered not efficient enough in the complete removal of the recalcitrant contaminants from water. The use of modified transition metals in visible responsive synthesis to degrade PPCPs and other pollutants (organic and inorganic) is considered as a developing green chemistry and sustainable technology. Hence, this review presents the state-of-the-art discussion on the novel photodegradation of PPCPs, and antibacterial activities of transition metal-modified magnetite materials for wastewater treatment, and suggested directions for the future. Transition metal-modified magnetite nanostructured photocatalysis is identified as one of the best candidates employed in advanced oxidation processes (AOPs) for wastewater treatment and has been found to efficiently destroy bacterial spores and effectively remove recalcitrant pollutants in water. Therefore, this article hopes to contribute scientific knowledge along with existing ones on advanced mechanisms and technology used in wastewater treatment.
Catalysis Science & Technology, 2020
With solar light, modified d-block metal photocatalysts are useful in areas where electricity is ... more With solar light, modified d-block metal photocatalysts are useful in areas where electricity is insufficient, with its chemical stability during the photocatalytic process, and its low-cost and nontoxicity.
Nanoscale Advances, 2020
Through solar light, graphene nanocrystals are valuable in extents where electricity is lacking, ... more Through solar light, graphene nanocrystals are valuable in extents where electricity is lacking, with its chemical stability during the photocatalytic process, and its low-cost and nontoxicity. However, because of their...
Applied Catalysis B: Environmental, 2007
The presence of drugs in the aquatic media has emerged in the last decade as a new environmental ... more The presence of drugs in the aquatic media has emerged in the last decade as a new environmental risk. The aim of this study is the evaluation of photocatalysis as a suitable process to degrade an antibiotic, the sulfamethoxazole. In this way, sulfamethoxazole in aqueous solution was treated by using titania in suspension as catalyst, and UV light. Sulfamethoxazole degradation and TOC reduction were improved when titania concentration was increased, until an optimum located between 0.5-1.0 g TiO 2 /L. Under the studied conditions, 82% of sulfamethoxazole degradation and 23% of TOC reduction was achieved when working with 0.5 g TiO 2 /L. The initial pH also seemed to influence the process in some extent, although the antibiotic degradation was not affected by this variable, TOC reduction was dramatically decreased when the initial pH was 2, probably due to interferences caused by the sulfate anion. The LC/MS study has been also carried out, and a mechanism has been proposed, through the identification of five intermediates. Sulfate and ammonium ions were also monitored in the solution finding that, as long as the sulfamethoxazole is degraded, the total amount of releasable ions was not reached. The SUVA parameter along the reaction shows a decrease on the aromatic content, but there is still a notable presence of the aromatic compounds after 15 h of reaction. Finally, the experimental data were fitted to different kinetic models. The best results were obtained for a model including the sulfamethoxazole and intermediates concentration.
The synthesis of photocatalysts with high charge separation and transfer efficiency are of immens... more The synthesis of photocatalysts with high charge separation and transfer efficiency are of immense significance in the process of using photocatalysis technology for wastewater treatment. In this study CdS/g-C 3 N 4 photocatalyst presented an improved morphology in its characterization using techniques such as SEM, DRS, PL, MS, EIS, and XRD, and enhanced photodegradation of oxcarbazepine. Different composites were obtained as confirmed by the various characterization techniques studied, including CdS/g-C 3 N 4 photocatalyst. The synthesized photocatalysts showed high visible light absorption efficiency within a range of ~655 to 420 nm. S-Scheme CdS/g-C 3 N 4 photocatalyst demonstrated high photocatalytic activity ascribed to high load separation and transition as shown in PL, Photocurrent reaction and EIS. It is understandable that CdS/g-C 3 N 4 photocatalyst have confirmed to be one of the ultimate promising entrants for groundbreaking photocatalyst scheming.
Conference Presentations by Godfred Teye
Environmental challenges, Apr 1, 2024
Nanoscale advances, 2020
Please note that technical editing may introduce minor changes to the text and/or graphics, which... more Please note that technical editing may introduce minor changes to the text and/or graphics, which may alter content. The journal's standard Terms & Conditions and the Ethical guidelines still apply. In no event shall the Royal Society of Chemistry be held responsible for any errors or omissions in this Accepted Manuscript or any consequences arising from the use of any information it contains.
Nanomaterials, Oct 4, 2021
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Climate change management, 2023
Waste having a significant and relevant material presence in our everyday life was not considered... more Waste having a significant and relevant material presence in our everyday life was not considered worthy of human attention up until the 1990s. Most probably, this delayed recognition of waste is due to the fact that it has been mistakenly understood as something that is supposed to remain invisible to the human eye in a sense that it is assumed to be occupying those spaces that are not inhabited by human beings. Contemporary times, however, are marked by giving due importance to waste. It is seen as a crucial environmental and health challenge for species’ survival on earth and is therefore placed center stage in the United Nations Sustainable Development Goals (SDGs) that aim to protect the planet. More recently, SDG 12, ensuring sustainable consumption and production patterns, has alerted to fast-growing waste management (WM) environmental issues. With the earth being viewed as a limited natural resource and having the inadequate capacity to accommodate wastes leading to adverse environmental and health consequences, caution must be taken to understand the associations between global consumption, total waste, and wasting patterns. Conceptualizing waste as a globally circulating material, particularly in terms of greenhouse gas emissions (GHG) such as carbon dioxide (CO2), methane (CH4), and sulphur oxide (SOx), the governance of waste has become a global concern. This chapter focuses on WM in Ghana, a middle-income economy country in the West of Africa. Due to rapid industrialization, Ghana is witnessing an ever-escalation of the country’s contribution to global environmental waste issues, especially GHG emissions. This study aims to identify and address the challenges associated with managing waste in Ghana. Additionally, it proposes specific measures to mitigate climate change and its effects on the environment and human health resulting from WM. A descriptive cross-sectional study was conducted with 101 responses received from WM experts based on the aim. The data were analysed using the statistical package for social sciences (SPSS) version 27. 72% of respondents were male, with most completing first and second degrees and have been working between 11 and 15 years. Although most of the respondents’ report waste being poorly managed, 93% consider that the associated causes of improper WM include inadequate infrastructure, lack of landfills, lack of tools and logistics, and equipment. All respondents believed that the challenges affect climate change through the emission of GHGs and particulate matter, resulting in global warming and impacting human health.
Urban Science
More and more, waste generated in most parts of the Western world has been recycled and transform... more More and more, waste generated in most parts of the Western world has been recycled and transformed into new circularity products. However, managing waste within Sub-Saharan Africa (SSA), such as in Ghana, has become a challenge due to the continued practice of the old traditional linear waste economy, that is, the taking, making and disposing methods of management, representing a threat to global environmental sustainability. Despite the need to revise current linear waste management (WM) in order to turn to the circular economy (CE) model, which consists of the concept of renew, remake and share, to advance sustainable development, a number of factors restrict the CE realization in practice, specifically in developing countries. An integrative methodology was used in this article to identify some of the challenges that hinder the achievement of CE in SSA countries. The results revealed the absence of educational programs and public awareness of waste management activities. The fin...
Reviews of Environmental Contamination and Toxicology Volume 254, 2020
The intensity of emerging pollutants such as pharmaceuticals and personal care products (PPCPs) i... more The intensity of emerging pollutants such as pharmaceuticals and personal care products (PPCPs) in the aquatic and terrestrial environment is a major source of concern to researchers. The current conventional methods of wastewater treatment plants are considered not efficient enough in the complete removal of the recalcitrant contaminants from water. The use of modified transition metals in visible responsive synthesis to degrade PPCPs and other pollutants (organic and inorganic) is considered as a developing green chemistry and sustainable technology. Hence, this review presents the state-of-the-art discussion on the novel photodegradation of PPCPs, and antibacterial activities of transition metal-modified magnetite materials for wastewater treatment, and suggested directions for the future. Transition metal-modified magnetite nanostructured photocatalysis is identified as one of the best candidates employed in advanced oxidation processes (AOPs) for wastewater treatment and has been found to efficiently destroy bacterial spores and effectively remove recalcitrant pollutants in water. Therefore, this article hopes to contribute scientific knowledge along with existing ones on advanced mechanisms and technology used in wastewater treatment.
Catalysis Science & Technology, 2020
With solar light, modified d-block metal photocatalysts are useful in areas where electricity is ... more With solar light, modified d-block metal photocatalysts are useful in areas where electricity is insufficient, with its chemical stability during the photocatalytic process, and its low-cost and nontoxicity.
Nanoscale Advances, 2020
Through solar light, graphene nanocrystals are valuable in extents where electricity is lacking, ... more Through solar light, graphene nanocrystals are valuable in extents where electricity is lacking, with its chemical stability during the photocatalytic process, and its low-cost and nontoxicity. However, because of their...
Applied Catalysis B: Environmental, 2007
The presence of drugs in the aquatic media has emerged in the last decade as a new environmental ... more The presence of drugs in the aquatic media has emerged in the last decade as a new environmental risk. The aim of this study is the evaluation of photocatalysis as a suitable process to degrade an antibiotic, the sulfamethoxazole. In this way, sulfamethoxazole in aqueous solution was treated by using titania in suspension as catalyst, and UV light. Sulfamethoxazole degradation and TOC reduction were improved when titania concentration was increased, until an optimum located between 0.5-1.0 g TiO 2 /L. Under the studied conditions, 82% of sulfamethoxazole degradation and 23% of TOC reduction was achieved when working with 0.5 g TiO 2 /L. The initial pH also seemed to influence the process in some extent, although the antibiotic degradation was not affected by this variable, TOC reduction was dramatically decreased when the initial pH was 2, probably due to interferences caused by the sulfate anion. The LC/MS study has been also carried out, and a mechanism has been proposed, through the identification of five intermediates. Sulfate and ammonium ions were also monitored in the solution finding that, as long as the sulfamethoxazole is degraded, the total amount of releasable ions was not reached. The SUVA parameter along the reaction shows a decrease on the aromatic content, but there is still a notable presence of the aromatic compounds after 15 h of reaction. Finally, the experimental data were fitted to different kinetic models. The best results were obtained for a model including the sulfamethoxazole and intermediates concentration.
The synthesis of photocatalysts with high charge separation and transfer efficiency are of immens... more The synthesis of photocatalysts with high charge separation and transfer efficiency are of immense significance in the process of using photocatalysis technology for wastewater treatment. In this study CdS/g-C 3 N 4 photocatalyst presented an improved morphology in its characterization using techniques such as SEM, DRS, PL, MS, EIS, and XRD, and enhanced photodegradation of oxcarbazepine. Different composites were obtained as confirmed by the various characterization techniques studied, including CdS/g-C 3 N 4 photocatalyst. The synthesized photocatalysts showed high visible light absorption efficiency within a range of ~655 to 420 nm. S-Scheme CdS/g-C 3 N 4 photocatalyst demonstrated high photocatalytic activity ascribed to high load separation and transition as shown in PL, Photocurrent reaction and EIS. It is understandable that CdS/g-C 3 N 4 photocatalyst have confirmed to be one of the ultimate promising entrants for groundbreaking photocatalyst scheming.