Browsing Research Articles [MEWES] by Title
Now showing items 259-278 of 436
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Natural Dye Sensitizer for Grӓtzel Cells: Sepia Melanin
(Science and Education Publishing, 2015)The efficiency of Grätzel cell can be further improved by the anchoring groups, such as COOH to be adsorbed onto the TiO2 surface with a large electronic coupling. Some of the most efficient sensitizers are synthetic dyes ... -
Natural dyes for solar cell application: uv-visible spectra and outdoor photovoltaic performance
(Research Journal in Engineering and Applied Sciences, 2014-09)Successful conversion of visible light into electrical output was achieved by using four locally available natural dyes as wide band gap semiconductor sensitizers in Dye-sensitized solar cells. Natural dyes extracted from ... -
Natural Groundwater Recharge Response to Climate Variability and Land Cover Change Perturbations in Basins with Contrasting Climate and Geology in Tanzania
(MDPI, 2021-08-30)The response of aquifers with contrasting climate and geology to climate and land cover change perturbations through natural groundwater recharge remains inadequately understood. In Tanzania and elsewhere in the world, ... -
The need to enforce minimum environmental flow requirements in Tanzania to preserve estuaries: case study of mangrove-fringed Wami River estuary
(Elsevier, 2015-11-01)The importance of restoring and maintaining environmental flows for sustaining the ecosystem integrity of rivers has been recognized in policies and legal frameworks in many countries. However this is routinely not implemented ... -
Neither modern nor traditional: Farmer-led irrigation development in Kilimanjaro Region, Tanzania
(Elsevier B.V., 2019-04)The debate around what kind of irrigation, large- or small-scale, modern or traditional, best contributes to food security and rural development continues to shape irrigation policies and development in the Global South. ... -
Non-competitive and competitive detoxification of As (III) ions from single and binary biosorption systems and biosorbent regeneration
(Springer Nature Switzerland AG., 2023-01-14)The quantity of studies reporting on single-metal sorption systems is increasing every day while the elimination of heavy metals in binary and multisolute systems is seldom reported. Therefore, the biosorption and desorption ... -
A Novel and Facile Method to Characterize the Suitability of Metallic Iron for Water Treatment
(MDPI, 2019-11-23)Metallic iron (Fe0) materials have been industrially used for water treatment since the 1850s. There are still many fundamental challenges in affordably and reliably characterizing the Fe0 intrinsic reactivity. From the ... -
Numerical Analysis of Heat Exchanger for Spray-Assisted Low-Temperature Desalination System
(Hindawi, 2020-12-12)A numerical study for heat exchanger for spray-assisted low-temperature desalination system is presented for an existing low-temperature desalination unit at Arusha Technical College. This is aimed at recognizing the effect ... -
Nutrients’ distribution and their impact on Pangani River Basin’s ecosystem – Tanzania
(Taylor & Francis Group, 2017-05-05)Surface and groundwater from Pangani River Basin (PRB) were sampled in dry and wet seasons, analysed for dissolved organic and inorganic nutrients (N, P, Si and Urea). There was spatial and seasonal nutrients’ variability, ... -
Occurrence of nitrate in Tanzanian groundwater aquifers: A review
(Springer Open, 2015-03-06)More than 25 % of Tanzanian depends on groundwater as the main source of water for drinking, irrigation and industrial activities. The current trend of land use may lead to groundwater contamination and thus increasing ... -
Oldoinyo Lengai Volcanic Ash for Removal of Hydrogen Sulfide and Ammonia from Biogas
(Scientific Research an Academic Publisher, 2018-04-13)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 ... -
Open-Source Software Application for Hydrogeological Delineation of Potential Groundwater Recharge Zones in the Singida Semi-Arid, Fractured Aquifer, Central Tanzania
(MDPI, 2020-05-17)This study attempted to delineate and map potential groundwater recharge zones of the Singida, semi-arid, fractured crystalline basement aquifer using open source remote sensing and GIS software. Various thematic maps ... -
Operating Conditions of A Locally Made Fixed-Bed Incinerator, a Case Study of Bagamoyo – Tanzania
(Science Publishing Group, 2015-03-18)To minimize the pollution from municipal solid waste incinerators, the study of operating conditions is imperative. The local design incinerators can be used for high performance combustion and minimize pollutions. The ... -
Optimization of microwave-assisted alkali pretreatment followed by acid hydrolysis of sugarcane straw for production of acetone-butanol-ethanol
(Taylor & Francis Online, 2020-05-07)The production of acetone-butanol-ethanol (ABE) calls for effective pretreatment and hydrolysis techniques to maximize reducing sugar yields. In this study, optimized microwave-assisted alkali (MAA) pretreatment followed ... -
Optimization of Sedimentation Tank Coupled with Inclined Plate Settlers as a Pre-treatment for High Turbidity Water
(International Institute for Science, Technology and Education(IISTE), 2015)Access to clean and safe drinking water is a challenge in most rural areas of Tanzania. Unsafe drinking water is a major cause of water-related diseases that predominantly affect people living in developing countries. In ... -
Origin and mechanisms of high salinity in Hombolo Dam and groundwater in Dodoma municipality Tanzania, revealed
(Springer Nature Switzerland AG., 2017-05-12)The Hombolo dam (HD), in central Tanzania, is a shallow reservoir characterized by high salinity that limits its use for human activities. The origin of the salinity, mechanisms of reaching and concentrating in the dam ... -
Overview of feed resources condition and feeding practices among the smallholder dairy farmers in Tanzania
(RUFORUM Working Document Series, 2016)In Tanzania, most smallholder dairy farmers rely on on-farm resources for feeding their livestock. These on-farm feed resources include grasses, legumes, crop residues, cereals and oilseed byproducts. These feed resources, ... -
Pangani River Basin over time and space: On the interface of local and basin level responses
(Elsevier, 2011-09)As the pressure on the water resources mounts within a river basin, institutional innovation may occur not as a result of a planned sequence of adjustments, but arising out of the interplay of several factors. By focusing ... -
Performance analysis of a runner for gravitational water vortex power plant
(Wiley & Sons Ltd, 2022-02-14)Micro-hydropower can be used to meet the needs of both isolated and rural com munities for electricity. Due to its inexpensive initial investment, simple design, easy maintenance and low-head utilisation, the gravitational ... -
Performance evaluation of in situ Fenton-mediated photocatalysis of industrial dye effluent with enhanced TiO2 nanoparticle
(IWA Publishing, 2023-05-17)Effluents resulting from the frequent use of industrial azo dyes in textile operations have posed great toxicological impacts on man and the environment. The limitations of conventional treatment infrastructure necessitate ...