PhD Theses and Dissertations [MEWES]
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Tin molybdenum mixed metal oxides catalyst for oxidative desulfurization of model diesel
(NM-AIST, 2023-08)This study reports on synthesis, characterization, and catalytic activity of mesoporous mixed metal oxides of tin (Sn) and molybdenum (Mo) for sulfur removal from model diesel. Variable synthesis conditions, namely ... -
Surface water – groundwater interactions: A case of a shallow semi-closed lake catchment in northern Tanzania
(NM-AIST, 2023-06)Conjunctive use of surface water and groundwater is rapidly growing in many developing countries as an adaptation strategy to climate variability and change. However, the interactions between the groundwater and the ... -
Short-term forecast techniques for energy management systems in microgrid applications
(NM-AIST, 2023-07)In the 2015 Paris Agreement, 195 countries adopted a global climate agreement to limit the global average temperature rise to less than 2°C. Achieving the set targets involves increasing energy efficiency and embracing ... -
Remediation of soils contaminated with fluoride using seaweed-derived materials: case of slopes of mount Meru
(NM-AIST, 2023-08)While exposure to low fluoride is essential for stronger bones and teeth, exposure to high concentration (> 3 mg/L/day) leads to hyperostosis and osteoporosis. This research evaluated the role of fertilizer application ... -
Combination of natural betanidin dye with synthetic organic sensitiser towards dye-sensitised solar cell application
(NM-AIST, 2023-05)Betanidins belong to natural red-purple pigments betacyanins, which experimentally demonstrated good light adsorption in a visible range and might be suitable for the dye sensitised solar cell (DSSCs). Instability is a ... -
Hydrologic responses to climate and land use/cover changes in world heritage site of Ngorongoro conservation area and surrounding catchments, northern Tanzania
(NM-AIST, 2023-01)In Tanzania, various studies have analyzed the impact of climate and land use/cover changes on water resources. However, information on the interactions between climate and land use/cover change, temporal and spatial ... -
Tin halide perovskites: computational modeling of structural, electronic and thermodynamic properties towards solar cell applications
(NM-AIST, 2021-07)In the photovoltaic field, significant attention has been drawn to lead organo-halide perovskite materials because of their higher ability to convert sun energy to electricity and relatively simple process of fabrication ... -
Evaluation of selected botanicals as insecticides against cabbage insect pests in Tanzania
(NM-AIST, 2022-06)Synthetic pesticides are frequently and unwisely used to control cabbage insect pests by smallholder farmers despite the environmental pollution and insect pests’ resistance development. This work assessed the insecticidal ... -
Investigation of sediment source and delivery dynamics in an east African hydropower reservoir using sediment tracing technology
(NM-AIST, 2022-03)This study aimed to reconstruct the sedimentation rates over time and identify the changing sources of sediment in a major hydropower reservoir in Tanzania, the Nyumba ya Mungu (NYM). The study also aimed to evaluate ... -
Assessment of trace and radioactive elements risk in the artisanal and small-scale gold mining sector
(NM-AIST, 2022-05)Currently, the mining industry in Tanzania faces significant challenges including a significant policy research gap. In this work, different indices were applied to assess the health risk of people living and working ... -
Risk assessment of heavy metals in water and sediments in the Mara river and its tributaries
(NM-AIST, 2022-07)The present study assessed the levels of As, Cd, Cr, Hg, and Pb in water and sediments from the Mara River and its tributaries in Tanzania. The Mara River has recently been exposed to anthropogenic activities including, ... -
Climate and anthropogenic footprints implications on the surface and groundwater dynamics on the southern slopes of Mount Kilimanjaro, Tanzania
(NM-AIST, 2021-10)Climate and land use/cover changes impact water resources all over the world. This study aimed at developing a conceptual understanding and management of the impacts of present and future climate change and human ... -
Structural and biophysical characterization of cassava linamarase and the role of solvents on linamarin’s properties: a computational study
(NM-AIST, 2022-06)Linamarase and linamarin mainly from cassava have many applications ranging from food, environmental to the medical industry. To better explore the potential of this enzyme and its substrate, one needs to understand ... -
Canarium schweinfurthii resin as an organic binder for carbonized briquettes
(NM-AIST, 2022-07)Charcoal is the predominant fuel used in many developing countries for domestic and commercial purposes. Transport and handling of charcoal produces fines amounting to 10-20% by weight. The fines can be turned into ... -
Optimization of sub- and supercritical water gasification of rice husk enhanced with iron-doped alkaline-earth catalysts
(NM-AIST, 2022-05)Biomass is a promising renewable energy source widely available worldwide, particularly in developing countries where clean and affordable energy is a major problem. Biomass gasification is an attractive technology ... -
Simulation and performance analysis of municipal solid waste gasification in a novel hybrid fixed bed gasifier
(NM-AIST, 2022-06)Municipal Solid Waste (MSW) is a main challenge to municipalities in developing countries due to the increase in its production caused by technology development, community culture, population growth, and urbanization. ... -
Strategies to improve anaerobic digestion and environ-economic analysis of municipal solid wastes management options
(NM-AIST, 2021-06)Different strategies have widely been applied for improving the anaerobic digestion of the organic fraction of municipal solid wastes. However, because of the heterogeneous compositions of organic fraction of municipal ... -
Land use change and temporal water quality dynamics on the slopes of mount Meru
(NM-AIST, 2020-09)This work reports on the results obtained following the study on the land use change and temporal water quality change in rivers of the slopes of Mount Meru in Northern Tanzania between 2015 and 2016. Satellite images ... -
Assessment of groundwater pollution in Singida urban and Manyoni districts
(NM-AIST, 2021-06)The quality of groundwater in Tanzania has over the years remained poorly understood, hence posing risks to human health and the environment. In this study, the quality of groundwater sources used for drinking purpose ... -
An eco-friendly tanning method using plant barks and their combination with aluminium sulphate from kaolin for leather industry
(NM-AIST, 2021-02)Chrome tanning has remained the most preferred tanning method worldwide in the leather industry because it produces leather of a high quality with all the desired features. However, environmental concerns of chromium ...
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