Materials, Energy, Water and Environmental Sciences: Recent submissions
Now showing items 441-460 of 666
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Charge enhanced capacitive deionization electrodes for deionized water production
(NM-AIST, 2020-05)The deionized (DI) water of high purity standards is used in several industrial processes to manufacture products and technologies for high end applications. Deionized water is used in industrial processes such as to ... -
Effect of elevated temperature on properties of neem seed husk ash concrete
(NM-AIST, 2020-02)High temperature rise mostly caused by fire is currently becoming a threat that endangers concrete’s structural performance for buildings and the safety of dwellers. The behavior of concrete after fire subjection has ... -
Fish bladder-based activated porous carbon/co3o4/tio2 composite electrodes for supercapacitors
(NM-AIST, 2020-02)Supercapacitors as energy storage devices depend on electrode materials, electrolyte and conductive additives. In relation to the above, this master’s dissertation specifically provides a scientific understanding and ... -
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 ... -
Assessment of levels and distribution of progesterone in receiving waters and wastewaters in the vicinity of Arusha city,Tanzania
(NM-AIST, 2020-12)This study aimed at investigating the levels and distribution of progesterone in receiving waters and wastewaters in Arusha, a fast-growing urban area and third largest city in Tanzania. Also, intend to assess the ... -
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 ... -
Application of rice and corn husk biochar for removal of heavy metal ions from industrial wastewater
(NM-AIST, 2020-01)This study investigated the removal of heavy metal ions from industrial wastewater by using rice and corn husk biochar. The choice of the materials was influenced by their largest surface area, plentiful functional groups ... -
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 ... -
Impact of climate change on groundwater recharge in lake Manyara catchment
(2020-08)This study aimed to estimate the groundwater recharge of the Lake Manyara catchment (7920 km2) in two different time intervals, historical 1988-2018 and near-future 2021-2050 climatic condition. This study analyzed the ... -
A column design for groundwater hardness removal using cashew nut shells activated carbon with potential application in low-income communities
(NM-AIST, 2020-02)Water hardness has been associated with various human health problems. In many developing countries, groundwater is the main source of drinking water. Water hardness has a significant impact on groundwater quality, ... -
Integration of the energy recovery step in municipal wastewater treatment chain: a case study of Moshi municipality, Tanzania
(NM-AIST, 2020-06)The energy demand which is expected to increase more worldwide has sparked the interest of researchers to find sustainable and inexpensive sources of energy. This study aims to integrate energy recovering step into ... -
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 ... -
Efficacy of silver nanoparticles in capacitive deionization electrodes as antimicrobial agents
(NM-AIST, 2020-02)The availability of clean and safe water is still a big challenge in most parts of the world. Drinking water should be free of harmful microorganisms and should contain the required amount of minerals based on the set ... -
Mesoporous carbon materials derived from artocarpus heterophyllus for water desalination and defluoridation using capacitive deionization
(NM-AIST, 2020-02)Sustainable clean water for human use can be attained through cost-effective water purification technologies whereby capacitive deionization (CDI) technology is among them. To attain high CDI performance porous carbon ... -
Potential of Scoria, Pumice, and RHA as Supplementary Cementitious Materials for Reducing Setting Time and Improving Early Strength of Pozzolan Blended Composite Cement
(NM-AIST, 2019-10)Tanzania has huge deposits of scoria (S-N) and pumice (P-N) minerals that can be used as supplementary cementing materials (SCMs) in cement factories to cut down the cost of cement and its pollution effect to the ... -
Assessment of groundwater abstraction and hydrogeochemical investigation in Arusha city, northern Tanzania
(NM-AIST, 2020-03)In this work geological and hydrogeochemical data, radioisotopes and stable isotopes, and groundwater hydrographs were used to assess the groundwater abstraction trends and hydrogeochemical characteristics of Arusha ... -
Geological and hydro-geochemical assessment of fluorine around mount Meru, northern Tanzania
(NM-AIST, 2020-03)Areas around Mt. Meru are among the areas in Tanzania where climate change, population growth and high fluoride levels in much of the water sources lower availability of water for domestic ... -
Simulation and optimisation of the pyrolysis of rice husk: Preliminary assessment for gasification applications
(Elsevier B.V., 2020-09)Thermochemical conversion of biomass into useful products is a promising route to harness biofuels. This process is clean, renewable and can reduce the use of fossil fuel. In this study, SuperPro Designer (SPD) software ... -
Thermal Performance Analysis of Solar Dryer Integrated with Heat Energy Storage System and a Low-Cost Parabolic Solar Dish Concentrator for Food Preservation
(Hindawi, 2020-07-30)Solar energy has become a viable alternative energy because it is a clean type of energy that converts solar radiation into heat energy for various applications such as heating water, power generation, cooking, and food ... -
Evaluating the level of ammonia and sulfide in the liquid phase during anaerobic digestion of slaughterhouse waste operating at mesophilic scale digester—the impact of inhibition and process performance
(AIMS Press, 2020-07-10)The performance of experimental batch-reactor loaded with slaughterhouse waste at mesophilic temperature was investigated as well as the inhibition of both ammonia and sulfide concentration in the aqueous phase. The digester ...
