Browsing Masters Theses and Dissertations [MEWES] by Title
Now showing items 41-60 of 71
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Lawsone, lawsone ether and bilawsone for dyesensitized solar cells application
(NM-AIST, 2020-02)Dye-sensitized solar cells (DSSCs) had turned up as a novel class of low-cost solar cells that can be fabricated easily compared to silicon solar cells. The DSSCs based on natural sensitizers are able to generate clean ... -
Optimization of biogas production process in solid state digesters: option for minimizing deforestation in dry areas
(NM-AIST, 2019-03)Questionnaire survey, satellite images of 1987, 1997, 2002 and 2017 were used to assess energy sources, demand and the impact of fuel wood use to forest cover changes in Meru and Mwanga districts. The major energy sources ... -
Optimization of domestic biogas stove burner for efficient energy utilization
(NM-AIST, 2020-08)The inefficient indoor burning of fuel wood on traditional cook stoves generates pollutants, primarily carbon monoxide and many other human health-damaging emissions. It is from this risk that it is necessary to have an ... -
Performance analysis of standalone solar PV panel: case study of Arusha, Tanzania
(NM-AIST, 2019-03)The purpose of this study was to carry out experimental and theoretical performance analysis of standalone solar Photovoltaic (PV) panel in tropical region. The study concentrated on the influence of poor PV panel positioning ... -
Performance assessment of solar dryer integrated with heat energy storage system for food preservation
(NM-AIST, 2022-01)Solar energy is regarded as a clean form of energy because solar radiation can be transformed into heat energy for different applications such as heating water, generating power, cooking, and drying food products. The ... -
Performance investigation of the slaughterhouse wastewater treatment facility: a case of Mwanza city slaughterhouse, Tanzania
(NM-AIST, 2021-01)The present study engaged onsite operations and laboratory analysis for Mwanza City Slaughterhouse (MCS) wastewater to improve the efficiency of wastewater treatment of a newly installed facility. The MCS wastewater ... -
Performance of horizontal subsurface flow constructed wetland integrated with floating wetland and anaerobic baffled reactor in treating seed production wastewater
(NM-AIST, 2021-04)Discharge of untreated or partially treated industrial wastewater is the major contributor to aquatic environmental pollution. Seed producing industrial wastewater is composed of high organic matter, nutrient, and suspended ... -
Performance of inclined plates settler integrated with constructed wetland for high turbidity water treatment
(NM-AIST, 2021-07)The purpose of this study was to investigate and demonstrate a cost-effective treatment technology for high turbid water, commonly used for domestic purposes in rural areas of Tanzania where conventional water treatment ... -
Performance optimization of unplanned water distribution networks in fast growing towns: a case study of Mwanza city, Tanzania
(NM-AIST, 2021-07)High Non-Revenue Water (NRW) and unreliable water supply services are major challenges in operations of the water networks in most of the fast-growing cities in developing countries. The present study aims at investigating ... -
The potential of water resources contamination around a large-scale gold mine
(NM-AIST, 2022-05)This study used the hydro-chemical properties and isotopic signatures of water to understand the main sources of deterioration of water quality around the North Mara gold mine in Tarime District, Mara Region. The ... -
Production of biodiesel from neem seed oil using calcinated banana ash/ li-cao/fe2(so4)3 blends as a catalyst
(2020-08)Biodiesel is a possible remedy to the present toxic, finite sources and ever-diminishing crude fuels. Non-edible and locally available (Azadirachta indica) Neem Seed Oil (NSO) as a second-generation feedstock was transformed ... -
Production of biogas as a waste management option for textile effluent sludge: a case study of the a to z textile mills ltd
(NM-AIST, 2020-12)Textile effluent sludge management is becoming a major environmental management issue in many agro-processing industries throughout Africa. This is mostly due to the limited and ineffective means of management. This ... -
A quantity-quality tradeoff: Water quality and poverty assessment of drinking water sources in Southern Tanzania
(NM-AIST, 2023-06)Regardless of being essential for human survival, access to potable water is still a problem in many rural African communities with increasing exposure to waterborne illnesses. This study aimed at establishing accessible ... -
Removal of heavy metals from water by capacitive deionization electrode materials derived from chicken feathers
(NM-AIST, 2019-03)Capacitive deionization (CDI) is an emerging desalination technology based on the principle of electrical double layer capacitors. When the voltage is applied to the surface of the electrodes, electrodes become oppositely ... -
Removal of hydrogen sulfide and ammonia from biogas using Oldoinyo Lengai Volcanic ash
(NM-AIST, 2019-02)Oldoinyo Lengai mountain located in Northern Tanzania is the only active natrocarbonatite volcano with unusually alkali-rich natrocarbonatites which are not found elsewhere in the world. Volcanic ash formed earlier during ... -
Removal of hydrogen sulfide from biogas using red rock materials
(NM-AIST, 2020-03)In this study, the potential of red rock materials for the removal of hydrogen sulfide from biogas was studied. The rock samples were collected, sieved and organized in various particle size ranges such as 0.32 - 250 µm, ... -
Removal of hydrogen sulfide from biogas using sweet potato’s leaves derived activated carbon
(NM-AIST, 2020-04)Hydrogen sulfide gas contained in biogas is both corrosive and poisonous. In this study a performance of sweet potato leaves activated carbon for hydrogen sulfide removal from biogas was evaluated. The samples were ... -
Rheological and physicochemical analysis of non- edible oils used for biodiesel production
(NM-AIST, 2023-07)The knowledge of the physicochemical and rheological flow characteristics of biodiesel feedstock is used for quality control in production, storage and transportation processes. Moreover, the knowledge is applied in ... -
Risk of heavy metals exposure through consumption of rice from Kahama and Geita districts
(2016-04)Heavy metals exposure is associated with various human health problems. This research aimed at determining the levels of heavy metals in paddy soils and in polished rice from villages around the artisanal gold mining areas ... -
Risks of sanitation facilities to groundwater pollution in Babati town, Tanzania
(NM-AIST, 2019-03)Despite of its importance for human consumption groundwater resource is under threat of overexploitation and pollutions. The study to assess the risks of sanitation facilities to groundwater pollution was carried out in ...