Materials, Energy, Water and Environmental Sciences: Recent submissions
Now showing items 21-40 of 626
-
Naturally occurring metal oxides from rocks as capacitive deionization electrode material for antibacterial activities
(Elsevier, 2023-05)The present study aimed to investigate the efficacy of activated carbon (AC) electrode embedded with naturally occurring metal oxides (MO) from rocks for antibacterial activities against both gram- negative (Escherichia ... -
Investigation of engine performance, exhaust emissions, and combustion characteristics of a diesel engine fueled with Adansonia digitata methyl ester doped with nanosilica additive extracted from agricultural waste
(SCI, 2024-05-25)Recent studies have used nanoparticle additions to enhance the fuel properties of biodiesel. However, it is unclear how these additives would affect engine operation. The effects of commercial nanoadditives on engines have ... -
Exergy analysis and performance testing of a gravitational water vortex turbine runner for small hydropower plants: An Experimental Approach
(College of Natural and Applied Sciences, University of Dar es Salaam, 2024-10-02)Gravitational water vortex power plants (GWVPPs) have recently gained popularity due to their low initial investment, simple design, ease of maintenance, and low head utilization. However, the technology suffers from ... -
Ecological consequences of microplastic pollution in sub-Saharan Africa aquatic ecosystems: An implication to environmental health
(Elsevier, 2024-12)Microplastic pollution (MPs) emerged as a significant environmental concern due to its persistent nature. These MPs particles endure in waters, soils, and even the atmosphere, posing potential threats to the entire ecosystem. ... -
Optimizing ciprofloxacin removal from water using jamun seed (Syzygium cumini) biochar: A sustainable approach for ecological protection
(Elsevier, 2024-01-01)Scientific interest in antimicrobial pollutants, such as ciprofloxacin, has increased. Due to spread of antibiotic-resistant bacteria, resistance genes, and their dissemination to the environment. Therefore, their remediation ... -
Metal oxides modified Carbon electrode materials for Fluoride and Paraquat removal from water by capacitive deionization
(NM-AIST, 2024-06)Capacitive deionization (CDI) is an emerging water treatment technology with many advantages, including low energy consumption, high efficiency, low cost, green and pollution free electrode regeneration. However, the ... -
Optimal design and analysis of a grid- connected hybrid renewable energy system using homer pro: a case study of Tumbatu island, Zanzibar
(NM-AIST, 2024-08)This study addresses the issue of quality electricity access on Tumbatu Island in Tanzania, with a specific focus on enhancing the high-voltage (HV) transmission line. While many studies concentrate on low-voltage (LV) ... -
The impacts of land use and climate change on Simiyu river discharge and the riverine sediment dynamics flowing towards lake Victoria
(NM-AIST, 2024-07)This study aimed to trace the dominant sources of riverine sediments and assess climate change's current and future impacts on the river discharge at the critical agroecological region of the Simiyu catchment. Geochemical ... -
Application of a constructed wetland for the removal of antibiotic residue, antibiotic-resistant bacteria, and antibiotic-resistance genes from pharmaceutically contaminated wastewater
(NM-AIST, 2024-06)The significant increases in abundance of pharmaceuticals, antibiotic-resistant bacteria (ARB), and antibiotic resistance genes (ARGs) in the environment have drawn attention over public health. The presence of these ... -
Fluoride and pathogens removal from water using combined electrocoagulation-inline-electrolytic disinfection process
(NM-AIST, 2024-08)The consecutive removal of fluoride (defluoridation) and pathogens (disinfection) in drinking water through combined electrocoagulation-inline-electrolytic disinfection (EC–ECl2) process with aluminum and dimension-stable ... -
Potential use of zero-valent iron in enhancing performance and resource recovery during the anaerobic digestion of domestic sewage
(NM-AIST, 2024-08)Incorporating metallic iron (Fe 0 ) into anaerobic digesters can improve organics (chemical oxygen demand (COD)), phosphorus, and nitrogen from contaminated water. However, no study has systematically assessed ... -
Investigation of uranium derived from phosphate fertilizers on plants uptakes and bacterial diversity in selected agricultural soils of east africa
(NM-AIST, 2024-08)Different types of phosphate fertilizers (PFs) used in agriculture to increase soil fertility contain uranium (U) as an accompanying element. Uranium is both toxic and slightly radioactive. This study investigated the ... -
Assessment of Mpanda groundwater contamination and the effectiveness of the baobab seeds-derived biochar for iron removal from groundwater
(NM-AIST, 2024-08)Groundwater in Mpanda District, Tanzania, faces excessive iron content, causing a reddish brown colouration due to oxidized iron species. The present study evaluated Mpanda groundwater contamination and the effectiveness ... -
Valorisation of solid sisal leaves decortication wastes using black soldier fly (hermetia illucens l.) larvae
(NM-AIST, 2024-08)The amount of waste generated from sisal industries during sisal fiber production is huge and its management is still challenging and a menace to the environment. These wastes include sisal wastewater and sisal leaf ... -
Optimization of arsenic(III) and mercury(II) removal from non-competitive and competitive sorption systems onto activated carbon
(NM-AIST, 2024-07)Heavy metals exist in the ecosystem both naturally and due to anthropogenic activities and as recalcitrant pollutants; they are non-biodegradable and cause acute and chronic diseases to human beings and many lifeforms. ... -
Design of an evaporative cooling system integrated with ultraviolet light for preservation of fruits and vegetables at variable tropical weather conditions: a case study of Arusha, Tanzania
(NM-AIST, 2024-07)Problems with fruits and vegetables spoiling after harvest are particularly acute in tropical regions. This research presents the design, construction, and performance assessment of a solar-powered evaporative cooling ... -
More than pollutant removal: constructed wetlands and waste stabilization ponds as biodiversity hotspots and community assets in Tanzania
(NM-AIST, 2024-05)Waste stabilization ponds (WSPs) and constructed wetlands (CWs) are important ecotechnologies for wastewater treatment. Despite their potential and wastewater management being challenging in urban and peri-urban areas ... -
Solvothermal liquefaction of orange peels and catalytic upgrading of biocrude into transportation fuel over a hybrid catalyst
(NM-AIST, 2024-08)The efficient valorization of biomass for energy-derived biocrudes is essential for effective waste management. However, the production of biocrudes with high energy and reduced oxygen contents during the liquefaction ... -
Naturally occurring metal oxides from rocks as capacitive deionization electrode materials for antibacterial activities
(NM-AIST, 2024-01)The availability of clean and safe drinking water remains a prominent challenge in most parts of the world. Drinking water should be free from harmful microorganisms, salt as well as other organic and inorganic ...
