Browsing Masters Theses and Dissertations [MEWES] by Title
Now showing items 45-64 of 68
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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 ... -
Simulation, performance analysis and improvements of solar farm installation in Tanzania
(NM-AIST, 2019-04)With the environmental advantages of solar energy, the use of solar photovoltaic (PV) in electricity generation is encouraged by Tanzanian governments, however, the number of institutions that are benefiting from installing ... -
Sources and hydro-geochemical characteristics of lake Duluti waters, Tanzania
(NM-AIST, 2019-11)Water chemistry, and stable isotopes of oxygen and hydrogen ( 18O and 2H), were used collectively to characterize and quantify Lake Duluti (L. Duluti) – groundwater interaction. Physico-chemical parameters including ... -
Strength and durability properties of concrete blended with pumice and scoria under combined attack of sulphate and chloride
(NM-AIST, 2021-11)Concrete structures suffer serious deterioration under corrosive environment. Consequently, the safety of these concrete structures is decreased. The influence of natural pumice (NP) and natural scoria (NS) as supplementing ... -
Sustainability assessment of existing septic systems in residential buildings: a case study of Mwanza city, Tanzania
(NM-AIST, 2022-07)Septic system (SS) is the oldest anaerobic wastewater treatment system still widely employed today in suburban and urban areas. The sustainability of SS in developing countries, including Tanzania, is restricted by ... -
Synthesis of mesoporous carbon from non-biodegradable plastic bags for water purification: methylene blue removal
(NM-AIST, 2017-12)In the present work, the mesoporous carbon materials with pore diameter of 14.2 nm and specific surface areas of 15.18 (m2g-1) identified by Brunauer, Emmett, and Teller (BET) were synthesized from non-biodegradable ... -
Theoretical and experimental studies of combination of synthetic dye (indoline d131) and natural dye (lawsone) for dye sensitized solar cells applications
(NM-AIST, 2019-02)Dye sensitized solar cells (DSSCs) convert visible sunlight to electricity using a wide band semiconductor. The DSSCs have attracted many researchers due to their environmental friendliness, low manufacturing cost and ... -
Theoretical and experimental studies of imidazolium based ionic liquids for supercapacitors application
(2020-03)The theoretical study of neutral ion pairs of 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]) and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][NTf2]) has been performed. The formation ...